Bibliografías temáticas / COPOLYMER RESINS

Literatura académica sobre el tema "COPOLYMER RESINS"

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Publicado: 11 de septiembre de 2023

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Artículos de revistas sobre el tema "COPOLYMER RESINS"

1

Kizilcan, N. y B. Erson. "Novel phenylacetylene based ketonic resins". Pigment & Resin Technology 44, n.º 4 (6 de julio de 2015): 198–204. http://dx.doi.org/10.1108/prt-07-2014-0052.

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Purpose – This paper aims to report the synthesis of resins having fluorescence properties, with the help of phenylacetylene (PhAc) by one-step method of in situ modification of ketonic resin. Cyclohexanone-formaldehyde resin (CFR) and acetophenone formaldehyde resin (AFR) were in situ modified with PhAc, in presence of sodium hydroxide (NaOH) by condensation polymerisation. Design/methodology/approach – Ketone, formalin and phenylacetylene were mixed and then 20% aqueous NaOH solution was added to produce the phenylacethylene modified ketonic resin. The solubility, molecular weight and thermal properties of the products were investigated. Findings – These new PhAc-modified ketonic resins (PAc-CFR and PAc-AFR) have fluorescence properties. Research limitations/implications – This study focuses on obtaining a fluorescence resin using a cyclohexanone, acetophenone and PhAc monomer which is an insulator. Practical implications – This study provides technical information for the synthesis of fluorescence comonomers. The modified resins contain acetylene groups. A chemical redox or radical system can be used to polymerise these acetylene groups and resins with much higher molecular weight. The resins may also promote the adhesive strength of a coating and corrosion inhibition to metal surfaces of a coating. Social implications – The resins will be used for the preparation of AB- and ABA-type block copolymers. These block copolymers may exhibit different properties due to incorporation of monomer into the block copolymer structure. Originality/value – PAc-CFR and PAc-AFR have been synthesised in the presence of a basic catalyst. Higher solubility and fluorescence intensity of the modified ketonic resins may increase their applications in the field of electroactive polymers and open new areas. These comonomers have fluorescence property.
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Lee, Pilwoo, Hunsang Jung, Chan-Sei Yoo y Hyun Ho Lee. "Low Dielectric Constant Characteristics of Styrene and Maleimide Anhydride Copolymer with Modification for High Frequency Application of Printed Circuit Board". Polymers 15, n.º 9 (27 de abril de 2023): 2078. http://dx.doi.org/10.3390/polym15092078.

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Recently, due to the intensive and fast progress of the high frequency wireless communication environment, including 5th generation (5G) wireless communication, more robust substrate for printed circuit board (PCB) application, especially with less power consumption, is required. In this study, modified resins based on styrene-maleic anhydride (SMA) copolymer were prepared and evaluated as binder resin to accomplish a low dielectric constant or relative permittivity (εr: <3.0) substrate for the PCB application under ultrahigh frequencies (UHF; 1 GHz~9.4 GHz). The low εr dielectric characteristics of the modified SMA copolymer could be correlated with effects from the stereo-structure of carbon chains or conformational orientation, where the degree of crystallization was analyzed by X-ray diffraction (XRD) and nuclear magnetic resonance (NMR) spectroscopies. Prepreg films of the low εr modified SMA copolymers and their compounds with epoxy resins were also characterized in terms of dielectric loss or dissipation factor (Df), which have shown more noticeable relation with their stereo-structures as well.
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Bienek, Diane R., Anthony A. Giuseppetti, Stanislav A. Frukhtbeyn, Rochelle D. Hiers, Fernando L. Esteban Florez, Sharukh S. Khajotia y Drago Skrtic. "Physicochemical, Mechanical, and Antimicrobial Properties of Novel Dental Polymers Containing Quaternary Ammonium and Trimethoxysilyl Functionalities". Journal of Functional Biomaterials 11, n.º 1 (18 de diciembre de 2019): 1. http://dx.doi.org/10.3390/jfb11010001.

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The aims of this study were to evaluate the physicochemical and mechanical properties, antimicrobial (AM) functionality, and cytotoxic potential of novel dental polymers containing quaternary ammonium and trimethoxysilyl functionalities (e.g., N-(2-(methacryloyloxy)ethyl)-N,N-dimethyl-3-(trimethoxysilyl)propan-1-aminium iodide (AMsil1) and N-(2-(methacryloyloxy)ethyl)-N,N-dimethyl-11-(trimethoxysilyl)undecan-1-aminium bromide (AMsil2)). AMsil1 or AMsil2 were incorporated into light-cured (camphorquinone + ethyl-4-N,N-dimethylamino benzoate) urethane dimethacrylate (UDMA)/polyethylene glycol-extended UDMA/ethyl 2-(hydroxymethyl)acrylate (EHMA) resins (hereafter, UPE resin) at 10 or 20 mass %. Cytotoxic potential was assessed by measuring viability and metabolic activity of immortalized mouse connective tissue and human gingival fibroblasts in direct contact with monomers. AMsil–UPE resins were evaluated for wettability by contact angle measurements and degree of vinyl conversion (DVC) by near infra-red spectroscopy analyses. Mechanical property evaluations entailed flexural strength (FS) and elastic modulus (E) testing of copolymer specimens. The AM properties were assessed using Streptococcus mutans (planktonic and biofilm forms) and Porphyromonas gingivalis biofilm. Neither AMsil exhibited significant toxicity in direct contact with cells at biologically relevant concentrations. Addition of AMsils made the UPE resin more hydrophilic. DVC values for the AMsil–UPE copolymers were 2–31% lower than that attained in the UPE resin control. The mechanical properties (FS and E) of AMsil–UPE specimens were reduced (11–57%) compared to the control. Compared to UPE resin, AMsil1–UPE and AMsil2–UPE (10% mass) copolymers reduced S. mutans biofilm 4.7- and 1.7-fold, respectively (p ≤ 0.005). Although not statistically different, P. gingivalis biofilm biomass on AMsil1–UPE and AM AMsil2–UPE copolymer disks were lower (71% and 85%, respectively) than that observed with a commercial AM dental material. In conclusion, the AM function of new monomers is not inundated by their toxicity towards cells. Despite the reduction in mechanical properties of the AMsil–UPE copolymers, AMsil2 is a good candidate for incorporation into multifunctional composites due to the favorable overall hydrophilicity of the resins and the satisfactory DVC values attained upon light polymerization of AMsil-containing UDMA/PEG-U/EHMA copolymers.
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Machado, Marina, Mateus Hofmann, Mário Garrido, João R. Correia, João C. Bordado y Inês C. Rosa. "Incorporation of Lignin in Bio-Based Resins for Potential Application in Fiber–Polymer Composites". Applied Sciences 13, n.º 14 (19 de julio de 2023): 8342. http://dx.doi.org/10.3390/app13148342.

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Bio-based resins, obtained from renewable raw materials, are a more sustainable alternative to oil-based resins for fiber-reinforced polymer (FRP) composites. The incorporation of lignin in those resins has the potential to enhance their performance. This paper presents results of an experimental study about the effects of Lignoboost lignin incorporation on a partially bio-based vinyl ester (VE) resin. Two resins were prepared—without (reference) and with lignin addition (4% by weight) to its main chain—and their chemical, thermophysical, and mechanical properties were compared using Fourier transform infrared (FTIR) spectroscopy, gel permeation chromatography (GPC), dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and tensile and shear tests. Results suggest that the addition of lignin to the base resin resulted in a copolymer of increased heterogeneity and higher molecular weight, incorporating stiff and complex aromatic structures in the polymer chain. While requiring high-temperature curing, the VE–lignin copolymer presented improvements of 27% in tensile strength, 4% in shear strength, and increased glass transition temperature by about 8 °C, thus confirming the potential of this natural biopolymer for FRP composite applications.
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Khatiwada, Shankar P., Sabu Thomas, Jean Marc Saiter, Ralf Lach y Rameshwar Adhikari. "Mechanical and thermal properties of triblock copolymer modified epoxy resins". BIBECHANA 16 (22 de noviembre de 2018): 196–203. http://dx.doi.org/10.3126/bibechana.v16i0.21651.

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We investigate the ways of improving thermal and mechanical properties of diglycidyl ether of bisphenol-A (DGEBA) based thermoset resin using diaminodiphenylsulphone (DDS) as hardener and using epoxidized polystyrene/polybutadiene-based triblock copolymers as modifier. The epoxidation was performed. The targeted chemical modification using meta-chloroperoxybenzoic acid (m-CPBA) of the copolymer was performed whereby the epoxidation of the butadiene chains mainly took place at 1,4 linkages. The modification copolymer was found to contribute in enhancing the mechanical performance of the blends with epoxy resin. The results indicated the formation of nanostructured morphology in the blends attributable to their enhanced impact strength.BIBECHANA 16 (2019) 196-203
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6

Ateş, Esin, Nilgün Kizilcan y Merve İstif. "New comonomer synthesis from thiophene-2-carbonyl chloride and cyclohexanone formaldehyde resin". Pigment & Resin Technology 44, n.º 2 (2 de marzo de 2015): 79–86. http://dx.doi.org/10.1108/prt-10-2013-0091.

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Purpose – The purpose of this paper is to synthesise an electro-active monomer containing ketonic resins and then to investigate the redox reaction between Fe+3 and bound thiophene in comonomer. First, thiophene-functionalised ketonic resins were synthesised by esterification reaction of thiophene-2-carbonyl chloride (ThCCl) and hydroxyl groups of cyclohexanone formaldehyde resin (CFR). Thiophene-containing cyclohexanone formaldehyde resin (Th-CFR) was then polymerised by ferric salt. The structures of the specimens were characterised by means of Fourier transform infrared and Proton – Nuclear Magnetic Resonanse (1H-NMR) spectroscopy. Thermal properties of the samples were determined with differential scanning calorimeter. Molecular weights of the specimens were determined by gel permeation chromatography. The obtained samples were also characterised morphologically by scanning electron microscope. Design/methodology/approach – Synthesis of Th-CFR comonomers by a combination of condensation polymerization and chemical oxidation polymerisation processes is described. First, Th-CFR units were prepared by direct condensation reaction of thiophene-2-carbonyl chloride (ThCCl) and hydroxyl groups of CFR. Then, the chemical oxidation (CO) of Th-CFR in the presence of anhydrous iron (III) chloride salt (FeCl3) was performed in chloroform (CHCl3)/acetonitrile mixture solutions at room temperature. Findings – The important structural factor determined quantitatively for Th-CFR is the CFR/ThCCl ratio after reaction. The effect of the mole ratio effect of ThCCl and ketonic resin on the solubility, molecular weight, Tm and Tg values of the comonomers (Th-CFRs) were investigated. Research limitations/implications – The ferric ion (Fe+3) has a standard oxidation potential. Furthermore, FeCl3 can react with thiophene to produce a cation radical. FeCl3 cannot react with hydroxyl groups of ketonic resins. When ferric is used for in situ chemical oxidation application at relatively low temperatures (e.g. < 20°C), the oxidation reactions are usually less aggressive. Practical implications – This work provides technical information for the synthesis of conducting block copolymer and for the synthesis of chain-extended resins. The modified resins contain electro-active monomer as thiophene. The chemical oxidation system has been used to polymerise these thiophene groups and resins with much higher molecular weight might be produced. These resins may also promote the adhesive strength of a coating and corrosion inhibition to metal surfaces of a coating. Social implications – This will be used for the preparation of AB- and ABA-type block copolymers. These block copolymers may exhibit different properties due to incorporation of monomer into the block copolymer structure. Originality/value – Novel Th-CFR comonomers were synthesised. These comonomers have higher glass transition temperature (Tg) and melting temperature (Tm) value than CFR alone. The chemical oxidation system has been used to polymerise these thiophene-functionalised ketonic resins.
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Nandekar, Kamlakar. "Novel Applications of Some Organic Copolymers Derived From Phenolic and Nitrogen-Containing Compounds- A Review". Journal of ISAS 2, n.º 1 (31 de julio de 2023): 15–26. http://dx.doi.org/10.59143/isas.jisas.2.1.kdqi5413.

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A variety of organic copolymers have been synthesized from phenolic compounds like p-Hydroxybenzoic acid, p-Hydroxybenzaldehyde, p-Hydroxyacetophenone, and also from nitrogen- containing compound like anthranilic acid, aniline, urea, biurate. These copolymers have been studied for various properties like thermal behavior, kinetic parameters, antimicrobial screening, ion-exchange study, polymer composites, photoluminiscence etc. Kinetic parameters of the copolymers derived from phenolic and nitrogen-containing compounds have been studied using Freeman-Carroll (FC) and Sharp-Wentworth (SW). Based on TGA, thermal stability and decomposition temperature have been studied for the copolymers and composites. Higher thermal stability for copolymer composites has been found as compared to the copolymer because the composite has a high activation energy and more residue left out at the end of the decomposition process. The metal ion uptake capacity of the copolymer have been studied by using the batch equilibrium method and is useful for wastewater treatment. The antimicrobial activity of the copolymers have been studied using the agar diffusion method. Polymer composites have been made from copolymers using an ultra-sonication process and exhibit excellent properties in metal ion uptake for wastewater treatment. The present review paper involves the study of novel applications of the copolymer resins derived from phenolic compound and nitrogen-containing compound.
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8

Babayev, E. R., I. I. Safiullina, E. Kh Karimov, I. Z. Mukhametzyanov, A. Yu Bakhtina y E. M. Movsumzade. "Acrylic polymers for conditions of weakly acid conversion to resins, complex syntheses". SOCAR Proceedings, n.º 4 (31 de diciembre de 2020): 84–94. http://dx.doi.org/10.5510/ogp20200400469.

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The paper presents materials on the conversion of acrylic monomers to acrylic polymers. Similarly, polymers and copolymers obtained from acrylonitrile were prepared. On the basis of the results of quantum chemical calculations, the parameters of polymer and copolymer materials were established, which will make it possible to evaluate the possibilities of complexes of acrylonitrile polymers for the production of membranes.
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Fainleib, A. M. "Copolymers and interpenetrating polymer networks of thermoreactive nitrogen-containing resins. Mini review". Polymer journal 42, n.º 4 (10 de diciembre de 2020): 245–53. http://dx.doi.org/10.15407/polymerj.42.04.245.

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In a short review the effective methods of optimization of structure and properties of high-performance polymers obtained from thermoreactive nitrogen-containing resins such as benzoxazines, bismaleimides, cyanate esters have been analysed. High crosslinked density copolymer thermosets are synthesized through chemical interactions between reactive functional groups, which belong to the monomers/oligomers used. The different possible processes such as copolymerization or formation of interpenetrating polymer networks are discussed. The high-performance polymers and composites from thermoreactive nitrogen-containing resins are effectively used in aerospace industry and microelectronics as materials possessing high thermal and thermooxidative stability, radiation and chemical resistance, low water absorption, low dielectric loss, high dimension stability and high adhesion to different substrate. The performance characteristics of this kind of materials can be controlled by changing their composition, temperature-time curing schedule, using catalytic systems. Keywords: copolymers, IPNs, thermoreactive resins, benzoxazine, bismaleimide, cyanate ester resins.
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Li, Wei, Da Hong Li, Jian Ping Cao, Xiang Jun Yun y Pawan Kunmar. "Study on the Transparent Electronic Isolation Layer Material - A Photoresist Composition which is Stable at High Temperature and Humidity". Materials Science Forum 980 (marzo de 2020): 44–57. http://dx.doi.org/10.4028/www.scientific.net/msf.980.44.

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A negative resist composition composed of an acrylic-copolymer-binder resin, a crosslinker, photoinitiators, some agents and solvents has been UV-cured and developed for OverCoat (OC)-Bridge of One Glass Solution (OGS) touch panel (TP) sensor, wherein acrylic-copolymer-binder resin as a key element consisting of N-Phenylmaleimide (N-Pm), Methacrylic acid (MA), Styrene (St) and Isobornyl methacrylate (iBMA) monomers, being designed and synthesized to control the acid value (90-110mgKOH/g), molecular weight (Mw:10,000-20,000) and approximate solubility parameter [10.67-11.05(cal/cm3)1/2]. Here,we demonstrate a OC photoresist applies between two ITO line-films by UV-curing process technology deveoled for OC-Bridge pattern with a kind of acrylic-copolymer-binder resin by ours. Acting as TP sensor, the OC patterns have adequate resistance to solvents, acids and alkalis, good thermal and humid stability, and with excellent transparency and insulation. This OC photoresist, coupled with the acrylic-copolymer-binder resins, provides an unprecedented approach to realize supporting high temperature and humidity OC-Bridge.
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Tesis sobre el tema "COPOLYMER RESINS"

1

Richards, Mark Ian. "Refined methods in solid (gel) phase peptide synthesis". Thesis, University of Wolverhampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343258.

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Araujo, Renata Bastos de. "Preparação e avaliação de resinas biocidas impregnadas com iodo a partir de resinas comerciais de estireno e divinilbenzeno". Universidade do Estado do Rio de Janeiro, 2013. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=5197.

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Neste trabalho, foram empregadas duas resinas comerciais de caráter fortemente básico. Ambas tendo como base copolímeros de estireno e divinilbenzeno (DVB), sendo que a VPOC 1950 contém em sua composição grupos quaternários de amônio do tipo 1, que apresentam três grupos metila e a VPOC 1960 grupos quaternários de amônio do tipo 2, que apresentam um grupo etanoíla e dois grupos metila. As resinas comerciais citadas foram escolhidas por apresentarem grande capacidade de troca iônica, estabilidade e grupos funcionais de interesse para a impregnação com iodo. As resinas foram impregnadas com iodo por meio de três metodologias distintas, uma solução metanólica de iodo 0,08 mol/L com e sem iodeto de potássio 0,14 mol/L, e iodo 0,08 mol/L em heptano. As resinas foram caracterizadas por área específica, volume do poro, grau de inchamento, microscopia ótica, espectrometria de infravermelho por transformada de Fourier (FTIR), análise elementar, termogravimetria, microscopia eletrônica de varredura e determinação do iodo fixado por iodometria. A avaliação da atividade biocida foi realizada através do método da contagem em placas, utilizando-se uma cepa de Escherichia coli ATCC11775 em concentrações de 103 a 107 células/mL. Todas as resinas impregnadas mostraram atividade bactericida significante devido à presença de iodo correlacionada às características da resina, tais como: grupos funcionais, tamanho e formato dos poros. Para efeito de comparação, foram realizados ensaios bactericidas com as resinas de partida para comprovação ou não da ação bactericida ser atribuída somente ao iodo
In this study, we employed two commercial resins strongly basic character. Both based on copolymers of styrene and divinylbenzene (DVB), and the VPOC 1950 contains in its composition quaternary ammonium groups of the type 1 (has three methyl groups) and VPOC 1960 quaternary ammonium groups of the type 2 (where a group ethanol replaces one of the methyl groups). The aforementioned commercial resins were chosen because they have a high ion exchange capacity, stability and functional groups of interest for impregnation with iodine. The resins were impregnated with iodine by three different methodologies, a methanol solution of 0.08 mol/L iodine with and without 0.14 mol/L potassium iodide and 0.08 mol/L iodine in heptane. The resins were characterized by surface area, pore volume, degree of swelling, optical microscopy, infrared spectroscopy by Fourier transform (FTIR), elemental analysis, thermogravimetry, scanning electron microscopy and determination of iodine prescribed by iodometry. The biocidal activity evaluation was performed by the method of plate counting, using a strain of Escherichia coli ATCC11775 at concentrations 103-107 cells/ml. All resins impregnated showed significant bactericidal activity due to the presence of iodine correlated characteristics of the resin, such as functional groups, size and shape of the pores. For comparison, tests were performed with bactericidal resins departure for confirmation or not of bactericidal only be attributed to iodine
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Abreu, Iury Körting de. "Estudos dos efeitos da adição de copolímeros em blocos em nanocompósitos de matriz epoxídica reforçados com nanoplateletes de grafeno e nanotubos de carbono". Universidade do Estado de Santa Catarina, 2015. http://tede.udesc.br/handle/handle/1677.

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Made available in DSpace on 2016-12-08T17:19:26Z (GMT). No. of bitstreams: 1 Iury.pdf: 24951 bytes, checksum: 2940126ad384e071aa040115b3667855 (MD5) Previous issue date: 2015-02-19
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O estado de dispersão das nanopartículas na matriz está diretamente ligado às propriedades físicas dos nanocompósitos. Assim técnicas que visam um estado de dispersão mais homogêneo das nanopartículas na matriz são constantemente estudadas. Funcionalização não covalente, ou física, é uma técnica que utiliza-se de interações Coulombianas e/ou barreira estérica com o objetivo de estabilizar a interação entre nanopartícula/matriz e consequentemente obter um estado de dispersão homogêneo. Utilizando copolímero em bloco BYK- 9077® como agente funcionalizante não covalentemente, este trabalho teve como objetivo produzir nanocompósitos de matriz epoxídica Novolac® reforçados com nanoplateletes de grafeno ou nanotubos de carbono funcionalizados não covalentemente. Foram analisadas a influência da adição do copolímero em bloco nas propriedades mecânicas, térmicas e morfológicas dos nanocompósitos produzidos. Utilizou-se frações volumétricas de nanopartículas nos valores de 0,15%, 0,50% e 1,50%. A partir destes valores foi adicionado copolímero em bloco nas quantidades de 1, 5 e 10 vezes a quantidade em massa das nanopartículas. Foram realizadas espectroscopia Raman para caracterização das nanopartículas, verificando o grau de pureza das mesmas, assim como o número de plateletes empilhados. Analisando os resultados, estado de dispersão das nanopartículas na matriz sem a adição de copolímero em bloco não foi homogêneo, assim foram encontrados aglomerados de nanopartículas em Microscopia Eletrônica de Transmissão. Também os valores de Tg s não variaram significativamente em comparação com a resina pura, indicando dispersão não homogênea. Já ao adicionar copolímero em bloco, em quantidades baixas, 1x, foi possível observar aumentos de 8% no módulo de elasticidade, indicativo de que a adição de copolímero em bloco nesta quantidade tornou a dispersão das nanopartículas mais homogênea na matriz. Esta afirmação foi verificada em Microscopia Eletrônica de transmissão. Em contrapartida, conforme foi aumentado a quantidade de copolímero em bloco, 5 e 10x, foram observadas formação de uma segunda fase, que por consequência diminuiu o módulo de elasticidade, tensão de ruptura e Tg.
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4

Arnold, Cynthia A. "Structure-property behavior of polyimide homopolymers, copolymers, and blends". Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115012/.

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Hudda, Laila B. "Origin of limiting conversion phenomenon in alkyd/acrylate graft copolymerization systems". Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/10960.

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Stein, Jasmin. "Toughening of highly crosslinked epoxy resin systems". Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/toughening-of-highly-crosslinked-epoxy-resin-systems(de1605b9-d14d-43f1-83a1-dc13a7530179).html.

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Highly crosslinked epoxy resin systems are essential in aerospace applications due to the high operating temperatures. Although highly crosslinked epoxy resins have the required glass transition temperature (Tg) for the application, they are inherently brittle and matrix toughness is improved by incorporation of a second phase. Previous studies have focused mostly on toughening of lightly crosslinked epoxy systems, whereas this study investigates toughening of a highly crosslinked epoxy resin system using thermoplastic toughners poly(ether sulfone) (PES) and a poly(methyl methacrylate)-b- poly(butyl acrylate)-b-poly(methyl methacrylate) (MAM) block copolymer (BCP).
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7

Royston, Gareth John. "Modification of epoxy resins with block copolymers of poly(ethylene oxide) and poly(butylene oxide)". Thesis, University of Sheffield, 2007. http://etheses.whiterose.ac.uk/15156/.

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Block copolymer modified epoxy resins have generated significant interest since it was demonstrated that the combination could lead to nanostructured thermosets through self-assembly. In this work, samples of epoxy resin - formed by reaction of bisphenol-A diglycidyl ether (BADGE) and diethyltoulenediamine (DETDA) - and containing a range of copolymers composed of poly(ethylene oxide) (E) and poly(butylene oxide) (B), were prepared and characterized. Samples contained EB, EBE and BEB copolymers over a range of concentrations. Copolymers of low molecular weight and low B content were found not to microphase separate. BEB copolymers with high molecular weight and high B content were found to macrophase separate prior to, or during, cure. FTIR spectroscopy during cure demonstrated that the reaction kinetics in these systems differ from those previously reported for similar systems. Over moderate to high copolymer concentration the systems behaved as expected of a block copolymer in a solvent selective for one block. As concentration increased, transitions from BCC-Hex-Gyr-Lam phases were observed by SAXS. At lower concentrations, in some systems, spherical micellar structures were formed, as demonstrated by TEM. SAXS analysis was performed on those systems producing sufficiently clear patterns. Some degree of reaction-induced microphase separation (RI/lPS) was observed in all cases. A linear increase in scattering intensity with extent of reaction was observed during RI/lPS. In some cases non-equilibrium structures were apparently observed, due to vitrification prior to completion of the RI/lPS process. The increase in the number of micelles as a function of concentration was analyzed and found to deviate from linearity as the system goes from a solution of copolymer in epoxy to swollen copolymer gel. The association number of the micelles was found to vary as a function of copolymer composition following a similar scaling law to that observed, by others, in aqueous solution. Reaction-induced macrophase separation was observed in some BEB systems at elevated temperature, but not in similar EBE systems. The process was characterised by SALS and found to fit to the Cahn-Hilliard linear theory of spinodal decomposition. The systems were seen to vitrify before phase separation is complete, producing cured products that were phase separated into interpenetrating networks on the micron scale. No significant improvement of mechanical properties of the resin was observed in those samples tested.
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Miles, Andrew. "Copolymers of methacrylic acid and itaconic acid derivatives as thermally crosslinkable electron resists". Thesis, University of Stirling, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236050.

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9

Lascu, Claudia M. "Block Copolymers via Reverse Addition-Fragmentation Chain Transfer Polymerization as a Viable Resin for Packaging Coatings". University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1428070054.

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Cheng, Jing. "Toward sub-10 nm lithographic processes: epoxy-based negative tone molecular resists and directed self-assembly (DSA) of high χ block copolymers". Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49113.

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It’s becoming more and more difficult to make smaller, denser, and faster computer chips. There’s an increasing demand to design new materials to be applied in current lithographic process to get higher patterning performance. In this work, the aqueous developable single molecule resists were introduced, synthesized and patterned. A new group of epoxide other than glycidyl ether, cyclohexene oxide was introduced to functionalize a molecular core and 15 nm resolution was obtained. The directed self-assembly (DSA) of block copolymers as an alternative lithographic technique has received growing interest in the last several years for performing higher levels of pitch subdivision. A 3-step simplified process for DSA by using a photodefinable substrate was introduced by using a functionalized polyphenol with an energy switchable group and a crosslinkable group. Two high χ block copolymers PS-b-PAA and PS-b-PHEMA were successfully designed and synthesized via ATRP with controlled Mw and PDI. The size of the same PS-b-PAA polymer was tunable by varying the thermal annealing time. PS-b-PHEMA shows to be a suitable block polymer for the industry-friendly thermal annealing process. A self-complementary hydrogen-bonding urea group as a center group was used to facilitate the self-assembly of polymers. “Click” chemistry is promising for synthesis of PS-Urea-Urea-PMMA.
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Libros sobre el tema "COPOLYMER RESINS"

1

Budkowski, A., I. W. Hamley y T. Koike. Interfaces Crystallization Viscoelasticity. Springer London, Limited, 2003.

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(Contributor), A. Budkowski, I. W. Hamley (Contributor) y T. Koike (Contributor), eds. Interfaces/Crystallization/Viscoelasticity (Advances in Polymer Science). Springer, 1999.

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Budkowski, A., I. W. Hamley y T. Koike. Interfaces Crystallization Viscoelasticity. Springer Berlin / Heidelberg, 2013.

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Capítulos de libros sobre el tema "COPOLYMER RESINS"

1

Gooch, Jan W. "Ethylene–Acid Copolymer Resins". En Encyclopedic Dictionary of Polymers, 278. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_4557.

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H. Builes, Daniel. "Chapter 7 Nanostructuration of Unsaturated Polyester Resins Using Block Copolymers". En Block Copolymer Nanocomposites, 225–64. Penthouse Level, Suntec Tower 3, 8 Temasek Boulevard, Singapore 038988: Pan Stanford Publishing Pte. Ltd., 2016. http://dx.doi.org/10.1201/9781315364834-8.

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Li, Guizhi y Charles U. Pittman. "Polyhedral Oligomeric Silsesquioxane (POSS) Polymers, Copolymers, and Resin Nanocomposites". En Macromolecules Containing Metal and Metal-Like Elements, 79–131. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471712566.ch5.

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Jurek, M. J. y Elsa Reichmanis. "Lithographic Evaluation of Phenolic Resin—Dimethyl Siloxane Block Copolymers". En ACS Symposium Series, 158–74. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0412.ch010.

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Hse, Chung-Yun y QiQing Hong. "Effects of Phenol-Formaldehyde Copolymer on Gluebond Performance of Lignin-Phenolic Resin Systems". En ACS Symposium Series, 96–109. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0385.ch008.

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Pionteck, Jürgen. "pVT Analysis of the Effect of Addition of Thermoplastics, Block-Copolymers, or Rubbers on the Curing Behavior and Shrinkage of Epoxy Resins". En Handbook of Epoxy Blends, 799–823. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-40043-3_44.

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Pionteck, Jürgen. "pVT Analysis of the Effect of Addition of Thermoplastics, Block-Copolymers, or Rubbers on the Curing Behavior and Shrinkage of Epoxy Resins". En Handbook of Epoxy Blends, 1–26. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-18158-5_44-1.

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"Ethylene-acid copolymer resins". En Encyclopedic Dictionary of Polymers, 372. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_4494.

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Foster, R. "Ethylene Vinyl Alcohol Copolymer (EVOH) Resins". En Coatings Technology Handbook, Third Edition, 57–1. CRC Press, 2005. http://dx.doi.org/10.1201/9781420027327.ch57.

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"Ethylene Vinyl Alcohol Copolymer (EVOH) Resins". En Coatings Materials and Surface Coatings, 91–96. CRC Press, 2006. http://dx.doi.org/10.1201/9781420044058-16.

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Actas de conferencias sobre el tema "COPOLYMER RESINS"

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Miller, Tim, Fabio Aguirre y Ray Hudack. "New Specialty Resins for High Performance Fusion Bonded Epoxy Coatings". En 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90561.

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In the last decade, the evolution in the exploration and transportation of oil and gas as well as efforts to delay the effect of corrosion on strategic and valuable assets like pipelines, have triggered the development of new Fusion Bonded Epoxy (FBE) anticorrosion coatings. A major component in a FBE formulation are solid epoxy resins, which when properly formulated enable the FBE coating to reach higher performance requirements to cope with the ever more challenging conditions in the field. This paper describes how solid epoxy resins (SER) can help high glass transition temperature FBE coatings to protect pipelines operating at high service temperatures from corrosion. A second area of innovation is a solid epoxy resin that helps FBE to cure at lower application temperatures than standard FBE coatings while maintaining the similar corrosion performance. Damage tolerance is the third area of innovation. Dow Coating Materials has developed an epoxy/copolymer resin system which helps the FBE formulator overcome the brittleness of FBE Abrasion Resistance Overcoat (ARO) at subzero temperatures.
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Zhou, Hongfu y Jianbin Wang. "Preparation of copper clad laminates with high performance bismaleimide-based copolymer matrix resins". En 2011 International Symposium on Advanced Packaging Materials (APM). IEEE, 2011. http://dx.doi.org/10.1109/isapm.2011.6105742.

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Gabor, Allen H., Eric A. Lehner, Guoping Mao, Christopher K. Ober, Timothy E. Long, Brian A. Schell y Richard C. Tiberio. "Hydrosiloxane-modified styrene-diene block copolymer resists". En SPIE'S 1993 Symposium on Microlithography, editado por William D. Hinsberg. SPIE, 1993. http://dx.doi.org/10.1117/12.154785.

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Namaste, Y. M. N., S. K. Obendorf y F. Rodriguez. "Methacrylamide Copolymer Resists For Electron Beam Lithography". En 1986 Microlithography Conferences, editado por C. Grant Willson. SPIE, 1986. http://dx.doi.org/10.1117/12.963630.

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Li, Jiaxiong, Chao Ren, Kyoung-sik Moon y Ching-ping Wong. "Epoxy/ Triazine Copolymer Resin System for High Temperature Encapsulant Applications". En 2019 IEEE 69th Electronic Components and Technology Conference (ECTC). IEEE, 2019. http://dx.doi.org/10.1109/ectc.2019.000-2.

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Wakisaka, Yukiya, Tadayuki Fujiwara, Masayuki Tooyama, Hideaki Kuwano y Koji Nishida. "Development of advanced ArF resist using alicyclic methacrylate copolymer: the optimum quenchers for this copolymer". En Microlithography 2000, editado por Francis M. Houlihan. SPIE, 2000. http://dx.doi.org/10.1117/12.388272.

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Mertesdorf, Carlo, Bertholt Nathal, Norbert Muenzel, Heinz E. Holzwarth y Hans-Thomas Schacht. "Deep-UV resists based on methacrylamide copolymers". En SPIE's 1994 Symposium on Microlithography, editado por Omkaram Nalamasu. SPIE, 1994. http://dx.doi.org/10.1117/12.175342.

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Binkley, E. S. y S. Nara. "Low Loss, Buried Channel Waveguides Fabricated From New, Fluorinated Polyimide Copolymers". En Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/otfa.1993.fa.4.

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The introduction of optical interconnects for electronic packaging promises to make a major contribution to high speed systems from the standpoint of increased bandwidth, lower capacitance, and lower power requirements. Low optical loss polymer systems show considerable promise for the fabrication of low cost waveguide structures. In order to be implemented in commercial products, the waveguide system must be capable of withstanding the assembly operations that are used in current production processes, where temperatures up to 350 °C may be experienced fro short periods of time. Polyimide resins are an accepted class of polymers in the microelectronics industry due to their high thermal stability (>400 °C) and outstanding dielectric and mechanical properties. Recently, a new type of fluorinated polyimide[1,2] copolymers has been introduced by Hitachi Chemical that feature low optical attenuation, a broad range of refractive index control, and high temperature stability. These resins are designated OPI and have been used to fabricate low loss single mode channel waveguides that have been characterized optically at 830 and 1300 nm. We wish to report on these results.
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Malhotra, Sandeep, Bernard C. Dems, Yarrow M. N. Namaste, Ferdinand Rodriguez y S. K. Obendorf. "Modified maleic anhydride copolymers as e-beam resists". En Microlithography '90, 4-9 Mar, San Jose, editado por Douglas J. Resnick. SPIE, 1990. http://dx.doi.org/10.1117/12.20167.

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Hartney, M. A. y A. E. Novembre. "Poly (Methylstyrene - Dimethylsiloxane) Block Copolymers As Bilevel Resists". En 1985 Microlithography Conferences, editado por Larry F. Thompson. SPIE, 1985. http://dx.doi.org/10.1117/12.947820.

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Informes sobre el tema "COPOLYMER RESINS"

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Hubler, T. L., J. A. Franz, W. J. Shaw, M. O. Hogan, R. T. Hallen, G. N. Brown y J. C. Linehan. Structure/function studies of resorcinol-formaldehyde (R-F) and phenol-formaldehyde (P-F) copolymer ion-exchange resins. Office of Scientific and Technical Information (OSTI), septiembre de 1996. http://dx.doi.org/10.2172/402296.

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