Дисертації з теми "Acrylates Synthesis"
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Clayton, Anthony Brian. "Photopolymerised urethane acrylates /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phc622.pdf.
Повний текст джерелаTrenor, Scott Russell. "Synthesis and Characterization of Tailored Photoactive Macromolecules." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/27314.
Повний текст джерелаPh. D.
Lessard, Benoît H. 1985. "Random controlled free radical copolymerization of acrylic acidstyrene and tert-butyl acrylatestyrene mixtures using nitroxide mediators." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111944.
Повний текст джерелаEvans, Stacy Alexandria Banford. "Dithiafulvene (1,3-dithiole) and acrylate liquid crystals: Synthesis of monomers and polymers with possible electronic and electro-optic applications, and investigations in the synthesis of pure (meth)acrylates." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184777.
Повний текст джерелаMange, Siyabonga. "Synthesis, polymerisation and characterisation of a novel olefin-modified acrylate monomer, 1-methyl-1-propyl-hexel acrylate." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50459.
Повний текст джерелаENGLISH ABSTRACT: Finding use for byproducts from the chemical industry holds many advantages for a country's economy. Synthesis of new monomers from such byproducts adds value to otherwise otherwise low-value material. The synthesis of a new olefin-modified acrylate monomer, 1-methyl-1-propyl-hexyl acrylate (1-MPHA), derived from 1-pentene, is reported. Homopolymerisation of the monomer 1-MPHA was carried out in both benzene and in toluene. The products of full-conversion of the homopolymer poly-(1-MPHA) were characterised by GPC, NMR, TGA and DMA. Kinetic studies of the homopolymerisation process of 1- MPHAwere also undertaken. The monomer 1-methyl-1-propyl-hexyl acrylate (1-MPHA) was copolymerised with methyl methacrylate (MMA). Samples obtained from full conversion copolymerisations at various 1-MPHAIMMAfeed ratios were characterised by GPC, NMR, TGA and DMA. Reactivity ratios of the two monomers were obtained from in situ 1H NMR kinetic studies. 1-MPHA was also copolymerised with vinyl acetate (VAc). Samples obtained from full conversion copolymerisation with a 1-MPHA content ranging from 2 to 16 wt% were characterised by GPC, NMR, TGA and DMA. The solubility parameter and the hydrophobicity of the VAc/1-MPHA copolymers were also determined. Reactivity ratios of the two monomers were obtained from in situ 1HNMR kinetic studies. Further copolymerisation studies with styrene and glycidyl methacrylate as comonomers were undertaken. The chemical analysis and thermogravimetric analysis of the copolymers are reported. In conclusion, the use of 1-methyl-1-propyl-hexyl acrylate as a comonomer results in a reduction in the glass transition temperature, better thermal stability, increased hydrophobicity with an insignificant loss in stiffness of the copolymers. These properties are due to the long and branched chain structure of the 1-MPHA monomer.
AFRIKAANSE OPSOMMING: Gebruik van byprodukte van die chemiese nywerheid hou groot voordele in vir die land se ekonomie. Sintese van nuwe monomere vanuit sulke byprodukte dra by tot waardetoevoeging tot andersins lae-waarde byprodukte. Die sintese van 'n nuwe olefien-gewysigde akrilaatmonomeer afkomstig van 1-penteen, naamlik 1-metiel-1-propiel-heksielakrilaat (1-MPHA), word hier beskryf. Homopolimerisasie van die monomeer 1-MPHA is uitgevoer in beide benseen en tolueen. Die produkte van die volledige omskakeling van die homopolimeer is met behulp van GPC, KMR, TGA en DMA gekarakteriseer. Die reaksiekinetika van die homopolimerisasie van 1-MPHA is ook ondersoek. Die monomeer 1-MPHA is met metielmetakrilaat (MMA) gekopolimeriseer. Monsters van die volledig omgeskakelde kopolimere met verskeie 1- MPHNMMA voerverhoudings is m.b.v. GPC, KMR,' TGA en DMA gekarakteriseer. Die reaktiwiteitsverhoudings van die twee monomere is vanaf 1HKMR-studies bepaat. 1-MPHA is ook met vinielasetaat (VAc) gekopolimeriseer. Monsters van die produk van die volledige kopolimerisasie met 1-MPHA , met 'n inhoud van 2- 16 massa 0/0, is ook m.b.v. GPC, KMR, TGA en DMA gekarakteriseer. Die 1- MPHA het die hidrofobisiteit van VAc/1-MPHA aansienlik verhoog. Die reaktiwiteitsverhoudings van die twee monomere is vanaf in situ 1H KMRstudies bepaal. Verdere kopolimerisasiestudies met stireen en glisidielmetakrilaat as komonomere is onderneem. Chemiese- en termogravimetriese analises van die kopolimere is gedoen en gerapporteer. Ter afsluiting, die gebruik van 1-metiel-1-propiel-heksielakrilaat as komonomeer het 'n verlaging in die glasoorgangstemperatuur, verhoogde termiesestabiliteit, verhoogde hidrofobisiteit, en 'n klein verlies in die stewigheid (Eng. stiffness) van die kopolimeer tot gevolg. Hierdie eienskappe is as gevolg van die lang, vertakte kettingstruktuur van die 1-MPHA monomeer.
Sung, Jonggeun. "Design and synthesis of plant oil-based UV-curable acrylates for sustainable coating applications." Diss., Kansas State University, 2018. http://hdl.handle.net/2097/38657.
Повний текст джерелаDepartment of Grain Science and Industry
X. Susan Sun
A demand in sustainable polymers has been increased because of the environment concerns and saving finite petroleum resources. Plant oils are promising renewable resources to produce environmentally friendly polymer applications. Soybean oil-based resins such as epoxidized soybean oil (ESO) and acrylated epoxidized soybean oil (AESO) have been well-known functionalized plant oils, but relatively low performances of their polymers and a competition with food production have been disadvantages. Thus, in this study, we designed new plant oil-based acrylates using non-food resources and achieved excellent properties of the acrylates for coatings and thermoset applications. Firstly, we developed coating materials with high mechanical, thermal and coating performances using acrylated epoxidized camelina oil (AECO) as a main acrylate monomer with various meth(acrylates) as reactive diluents Next, acrylated epoxidized cardanol modified fatty acids from camelina oil (AECFA) was successfully synthesized, and a phenolic structure with long aliphatic side chains with acrylic groups was obtained. The novel structure of AECFA provided rigidity into its polymer maintained with flexibility, and AECFA coating material showed better performances in terms of all properties such as mechanical, thermal, viscoelastic, and coating performances, as compared to commercial AESO resin. Finally, acrylated epoxidized allyl 10-undecenoate (AEAU) was developed from 10-undecenoic acid, castor oil derivative. The single fatty ester structure with di-functional acrylates of AEAU had very lower viscosity and showed better thermoset performances than those of triglyceride-based acrylates such as AESO and AECO. Thus, AEAU had a potential to an alternative to AESO for thermoset applications.
Bagoury, Mohamed al. "Synthesis of aqueous polymer colloids based on saccharide monomers and alkyl acrylates through emulsion polymerization." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974074527.
Повний текст джерелаLi, Peichun. "Synthesis of poly(ε-caprolactone) based copolymers in molten state by living polymerization". Saint-Etienne, 2009. http://www.theses.fr/2009STET4001.
Повний текст джерелаDans cette thèse, nous étudions la synthèse de poly(ε-caprolactone) (PCL) fonctionnelle ainsi que la copolymérisation contrôlée de l'ε-caprolactone (CL) avec l'acrylate de butyle (BA) dans une matrice polymère thermoplastique via l'extrusion réactive. Dans la première partie, l'initiateur de formule Ti[O(CH2)4OCH=CH2]4 a été synthétisé dans le but d'élaborer de la PCL fonctionnelle. La cinétique de polymérisation par ouverture de cycle (ROP) initiée par Ti[O(CH2)4OCH=CH2]4 a été étudiée. Par ailleurs, un processus de gélification a été mis en évidence par rhéologie lors de la polymérisation simultanée de l'ε-caprolactone et de l'acrylate de butyle. Dans un second temps, ces réseaux ont été élaborés dans une matrice de poly (methyl methacrylate) (PMMA) par voie fondue. Dans la deuxième partie, un initiateur schématisé par Ti[OCH2CCl3]4 a été synthétisé dans le but de coupler 2 techniques de polymérisations contrôlées, à savoir la polymérisation par ROP de l'ε-caprolactone et la polymérisation radicalaire par transfert d'atomes (ATRP) de l'acrylate de butyle. Les cinétiques de polymérisation ont été évaluées et des copolymères PCL-bloc-PBA ont été élaborés. Parallèlement, un macro initiateur porteur de chaînes de polybutylacrylate a été synthétisé par ATRP à partir de Ti(OCH2CCl3)4. Ce dernier a permis d'élaborer un copolymère avec de l'ε-caprolactone dans une matrice PMMA en mélangeur interne. L'objectif de cette dernière partie étant de synthétiser, in situ et en voie fondue dans une matrice thermoplastique, un matériau de structure contrôlée afin d'améliorer les propriétés de la matrice
Lee, Jehoon. "Synthesis, characterization, and applications of the low cross-link density poly acrylate elastomers using direct reversible addition fragmentation chain transfer cross-linker." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron149798302050725.
Повний текст джерелаHinojosa, Barbara R. "Nanoparticles Engineered to Bind Serum Albumin: Microwave Assisted Synthesis, Characterization, and Functionalization of Fluorescently-Labeled, Acrylate-Based, Polymer Nanoparticles." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30466/.
Повний текст джерелаLizotte, Jeremy Richard. "Synthesis and Characterization of Tailored Macromolecules via Stable Free Radical Polymerization Methodologies." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/28998.
Повний текст джерелаPh. D.
Alshuiref, Abubaker. "Synthesis and characterization of urethane-acrylate graft copolymers." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/491.
Повний текст джерелаHamid, S. M. "Synthesis, aggregation behavior and polymerisation of novel amphiphilic (meth)acrylate monomers." Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381475.
Повний текст джерелаPoutrel, Pauline. "Réduction du motif vinyl-CF₃ : vers la synthèse catalytique énantiosélective de centres C-CF₃ et la synthèse diastéréosélective de monofluoroalcènes terminaux Copper‐catalyzed enantioselective formation of C−CF3 centers from β‐CF3‐substituted acrylates and acrylonitriles Stereoselective synthesis of terminal monofluoroalkenes from trifluoromethylated alkenes". Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR07.
Повний текст джерелаIn recent years, organofluorine chemistry has become a key field of research thanks to the growing presence of the fluorine atom in molecules coming from agrochemistry, pharmaceutical industry and materials. It is therefore necessary to develop new methodologies for the synthesis of fluorinated molecules. In our case, we envisioned to develop procedures to obtain synthons with a stereogenic center bearing a trifluoromethyl group on the one hand, and synthons with a terminal monofluoroalkene motif on the other hand. We first developed a methodology for the catalytic asymmetric reduction of β-CF3 acrylates and acrylonitriles via the formation in-situ of a chiral copper hydride species. We then developed a methodology for the synthesis of terminal monofluoroalkenes by reduction of di-, tri- or tetrasubstitued β-CF3 acrylates and α-CF3 styrenes with LiAlH4
Johnson, Harry Dale. "Synthesis, Characterization, Processing and Physical Behavior of Melt-Processible Acrylonitrile Co- and Terpolymers for Carbon Fibers: Effect of Synthetic Variables on Copolymer Synthesis." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/32373.
Повний текст джерелаMaster of Science
Yu, Elsie. "Catalytic Stereoselective Olefin Metathesis for Natural Product Synthesis." Thesis, Boston College, 2018. http://hdl.handle.net/2345/bc-ir:107714.
Повний текст джерелаChapter 1. Efficient Z-Selective Synthesis of Allylic- and Alkenyl Boronates by Catalytic Cross-Metathesis Efficient Z-selective cross-metathesis reactions to furnish Z-(pinacolato)-allylboron and Z-(pinacolato)alkenylboron compounds through catalytic cross-metathesis are disclosed. Z-allylic boron compounds are generated by the use of catalytic amounts of a W-based monoaryloxide monopyrrolide (MAP) complex in up to 91% yield and 96:4 dr after allylation to benzaldehyde. Alkenylboron compounds are prepared in high yields and high Z selectivity in up to 93% yield and 97:3 Z:E. Cross-metathesis reactions with 1,3-dienes and aryl olefins are efficient and highly Z-selective. Combination of cross-metathesis and cross-coupling to synthesize anticancer agent combretastatin A-4 highlights the utility of this approach. Chapter 2. Synthesis of Macrocyclic and Acyclic Z-Enoates and (E,Z) or (Z,E) Dienoates by Catalytic Cross-Metathesis The first examples of kinetically controlled catalytic olefin metathesis reactions to generate Z-α,β-unsaturated macrocyclic and acyclic esters are disclosed. The synthesis of (E,Z) or (Z,E)-dienoates are also presented. Reactions promoted by 3.0–10 mol % of Mo-based monoaryloxide monopyrrolide complex proceed to completion to the desired macrocycles within 2–6 h at room temperature. Macrocycles of diverse ring sizes are formed in 79:21 to >98:2 Z:E selectivity. Pure Z isomers can be obtained after purification in up to 75% yield. Acyclic Z-α,β-unsaturated esters are prepared in the presence of acetonitrile to avoid using excess amounts of the more valuable cross-partner substrate. Spectroscopic investigations and X-ray analysis rationalize the positive effect of acetonitrile in the reaction system. Linear (Z)-enoates are generated in up to 71% yield and up to >98:2 Z:E. (E,Z)-Dienoates are generated with high Z selectivity as well. The utility of the ring-closing metathesis and cross-metathesis is highlighted by the synthesis of an (+)-aspicilin precursor and the C1–C12 fragment of biologically active natural product (–)-laulimalide. Chapter 3. Application of E-Selective Catalytic Ring-Closing Metathesis in the Total Synthesis of Dolabelides A, B, C and D Efforts towards the enantioselective synthesis of the dolabelide family of anti-cancer macrolides is presented. Development of a total synthesis incorporating a late-stage kinetically E-selective RCM is illustrated. Previous attempts to synthesize the macrolide by ring-closing metathesis (RCM) have demonstrated poor efficiency and low selectivity for the E isomer. Methodology developed in our group with acyclic trisubstituted cross-metathesis demonstrates that high selectivity can be achieved with stereodefined 1,2-disubstituted and trisubstituted olefins by the use of the proper catalyst and reaction design. Modern catalytic and stereoselective approaches towards the two main fragments of dolabelide are presented. More efficient and concise routes will be pursued to highlight the utility of the proposed disconnections and practicality of the total synthesis
Thesis (PhD) — Boston College, 2018
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Chemistry
Hu, Chaohe. "Versatile biobased particles of acrylate vegetable oils : Synthesis and applications." Thesis, université Paris-Saclay, 2022. http://www.theses.fr/2022UPAST081.
Повний текст джерелаSince its beginning, in the early 1920's, polymeric industry relies heavily on fossil fuel resources. Approximately 4%-8% oil, gas and their derivatives are nowadays transformed into polymeric materials. Most of them are non-recyclable and non-degradable, hence leading to serious environmental issues, detrimental to wildlife and humans. In this context, there is a need for the development of alternative polymeric products, which, starting from renewable commodities, will share the same level of complexity than current ones derived from oil industry.Among the various bio-sourced raw products used to make polymeric materials, vegetable oils are promising for their low cost and intrinsic degradability, but also because their production is already optimized for the food industry. Acrylated epoxidized soybean oil (AESO) is one example of the vegetable oil derivatives that are used as e.g. plastifying additives for the formulation of PVC. Alone, AESO can be readily and rapidly polymerized to give a thermoset polymer. However, as a consequence of its high intrinsic viscosity, most of the research on AESO-based polymer so far is only focused on the bulk, coating or film properties of this material, leaving the possibility to fabricate high added value materials a blind spot.Herein, this work focuses on the fabrication and application of the AESO microparticles. We first present a simple approach through a vortex mixer to prepare the polydispersed AESO particles based on the emulsion photopolymerization. The synthesized AESO microparticles present a good degradability in the chemical and enzymatic conditions. Then, we develop a “one pot” microfluidic device with a flow-focusing structure for emulsification and the serpentine zone for UV-induced reticulation, which can be used to continuously product the monodispersed AESO particles with a tunable size. We also demonstrate the method base on the modified microfluidic chips to prepare the non-spherical particles, where a chip with Y-shape flow-focusing junction is used to prepare the crescent-shaped AESO particles and another chip with a double flow-focusing junction is utilized to synthesize the hole-shell structured AESO particles. In addition, AESO microcapsules are fabricated by the customized chip, and they are available to encapsulate the aqueous solutions or substances. Finally, we show the ability of AESO microparticles to carry the organic molecules into their crosslinked networks and use the similar methods to load the drugs (curcumin and ibuprofen). The release behavior of drugs in simulated body fluid can be observed, which may be act as a promising drug carrier for further pharmacy applications
Zeytin, Cigdem. "Synthesis And Characterization Of Epoxy-acrylate Vinylester Resin And Network Structure." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12610115/index.pdf.
Повний текст джерелаtherefore, diluent is used for easy application. The generally used diluent is styrene with, reactive double bonds to form a crosslink between the chains. The diluted resin viscosities are between 200 &
#8211
2000 cps. Peroxide initiators are used for network formation. The mechanical properties of vinylester resin are enhanced with reinforcements such as glass fiber, carbon fiber, Kevlar or nanoparticules to make composites. Various molecular weights of vinylester resins were synthesized and the samples were prepared with different styrene contents. The effects of the styrene content, temperature and molecular weight on the viscosity were measured and examined. The main effects were determined as styrene content and temperature, while the effect of molecular weight is negligible. The resins were characterized with IR and NMR spectroscopy. The molecular weights were determined by theoretical calculations, titration and H-NMR spectroscopy. Peroxide initiators were used to cure the resins with the cobalt complex accelerator. The resins were post-cured at different temperatures. The completion of the curing was monitored by the disappearance of the carbon-carbon double bonds of methacrylate (943 cm-1) and styrene (910 cm-1), by FT-IR spectrum. The effects of styrene content, post-cure conditions, and molecular weight on the mechanical properties were discussed. The glass transition temperatures were determined by DSC and DMA. The crosslink densities and rheological properties were determined by creep test. The important properties of vinylester resins, which are modulus, tensile and flexural strength, shrinkage, water absorption, glass transition temperature, HDT values and impact strength were investigated.
Bradley, Grant. "Hexaarylbisimidazoles as initiators of acrylate polymerisation : some new synthesis and application." Thesis, University of Kent, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360967.
Повний текст джерелаMacDonald, Iain I. "Synthesis, structural and adhesive evaluation of novel graft meth(acrylate) copolymers." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=15334.
Повний текст джерелаPiunova, Victoria A. "Photopolymerizable “Roundup” Synthesis, Herbicidal Activity and Coating Formulation." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1151340117.
Повний текст джерелаAuty, Samuel. "Utilising novel thiol-acrylate click reactions to synthesise controlled branched polymer emulsifiers." Thesis, University of Liverpool, 2014. http://livrepository.liverpool.ac.uk/2007707/.
Повний текст джерелаChai, Qinyuan. "Synthesis and Characterization of Ionically Crosslinked Networks." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367939178.
Повний текст джерелаCheshmehkani, Ameneh. "Design and synthesis of molecular resists for high resolution patterning performance." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50286.
Повний текст джерелаKeskin, Selda. "Synthesis And Characterization Of Copolymers Of Diisocyanates And Dialcohol." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609995/index.pdf.
Повний текст джерелаWang, Yi. "The Synthesis and Characterization of Amphiphilic Poly(Ethylene Oxide)-Block-Poly(Octadecyl Acrylate) Block Copolymers." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399491109.
Повний текст джерелаGOMES, FREIRE-SCHANZ MARIA TELMA. "Synthese et caracterisation de nouveaux (co) polymeres a base de monomeres carbonates de vinyle et acrylates." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13132.
Повний текст джерелаTichagwa, Lilian M. "Synthesis of acrylate-based polymeric and polymerisable surfactants and their application in the emulsion polymerisation of styrene." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/1185.
Повний текст джерелаThe study described in this dissertation examines the synthesis of mainly acrylate-based surfactants and their subsequent use as emulsifiers/stabilisers in the emulsion polymerisation of styrene. Some acrylamide-based surfactants were also studied, for comparison purposes only. Two major types of surfactants, polymerisable (surfactant monomers or surfmers) and polymeric, were synthesised, characterised and used in emulsion polymerisation reactions. The prepared polymerisable surfactants, 12-acryloyloxydodecanoic acid (12-ADA) and 11-acrylamidoundecanoic acid (11-AAUA), and their sodium salts, had reactive acryloyl functionalities.
Cox-Nowak, Kayleigh. "Synthesis and cell adhesion studies of linear and hyperbranched poly(butyl methacrylate) and poly(t-butyl acrylate)." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/4819/.
Повний текст джерелаWu, Tianyu. "Synthesis and Characterization of Zwitterion-Containing Acrylic (Block) Copolymers for Emerging Electroactive and Biomedical Applications." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/39332.
Повний текст джерелаPh. D.
Beck, Susan Ashley. "Copolymerizing Acrylonitrile and Methyl Acrylate by RAFT for Melt Processing Applications: A Synthetic Investigation of the Effects of Chain Transfer Agent, Initiator, Temperature, and Solvent." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/49104.
Повний текст джерелаMaster of Science
Appelt, Mathias. "Synthese von Co-, Stern- und Pfropfpolymeren aus Styrol und Acrylsäurederivaten durch N-Oxyl kontrollierte radikalische Polymerisation." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968459447.
Повний текст джерелаPisipati, Padmapriya. "Synthesis and Characterization of Solution and Melt Processible Poly(acrylonitrile-co-methylacrylate) statistical copolymers." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73150.
Повний текст джерелаPh. D.
Huzyak, Paige M. "Synthesis and Characterization of Organic-Inorganic Hybrid Materials for Thermoelectric Devices." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1600.
Повний текст джерелаBui, Nhat Thi Hong. "Polyhydroxyl and Polyphosphorylcholine functionalized Silica for Hydrophilic interaction liquid Chromatography- Synthesis, characterization and application." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-60600.
Повний текст джерелаEL, ALAMI NAJAT. "Isolement et reactivite du derive zincique de (bromomethyl-2) acrylate d'ethyle : synthese de methylene-3 pyrrolidinone-3 potentiellement antineoplasique." Nantes, 1987. http://www.theses.fr/1987NANT2016.
Повний текст джерелаNordell, Patricia. "Aluminium oxide - poly(ethylene-co-butylacrylate) nanocomposites : synthesis, structure, transport properties and long-term performance." Licentiate thesis, KTH, Polymera material, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29270.
Повний текст джерелаPolymera nanokompositer är lovande material för användning som dielektriskt material inom högspänningsområdet. I detta arbete studeras nanokompositer framställda av två olika sampolymerer av eten och butylakrylat (EBA-13 med 13 vikt% butylakrylat samt EBA-28 med 28 vikt% och två olika typer av nanopartiklar av Al2O3. Nanopartiklarna användes antingen som obehandlade eller efter silanisering med aminopropyltrietoxysilan- eller oktyltrietoxysilan. Den bästa partikeldispergeringen observerades för de material som baserats på EBA-13 medan den låga smältviskositeten hos EBA-28 resulterade i låga skjuvkrafter under kompounderingen och en observerat ojämn dispergering och förekomst av mikrometerstora agglomerat. Partiklar som silaniserats med oktyltrietoxysilan var lättast att dispergera. Nanopartiklarna fungerade som kärnbildare i EBA-28 vilket medförde en höjning av kristallisationstemperaturen. Vattensorptionsstudier demonstrerade dels effekten av den stora specifika gränsytan mellan partikel och matris och dels av förekomst av polära grupper lokaliserade till nämnda gränsyta. Kompositer med väldispergerade partiklar uppvisade en enkel Ficksk sorptionsprocess medan de material som innehöll en betydande mängd stora agglomerat påvisade en tvådelad process. Den första processen var kopplad till mättningen av polymermatrisen och den andra kunde länkas till vattenupptaget i de stora agglomeraten. Vidare undersöktes långtidsegenskaperna hos nanokompositerna, samt om det fanns någon växelverkan mellan nanopartiklar och en fenolbaserade antioxidant (Irganox 1010). DSC användes för att bestämma induktionstiden för oxidation (OIT) vilket är ett mått på koncentrationen av aktiv fenolisk antioxidant. Det framgick det att Irganox 1010 adsorberades på nanopartiklarna, vilket ledde till en minskning av OIT. Det framgick även att de material som innehöll silaniserade nanopartiklar hade högre OIT jämfört material med obehandlade partiklar. Antioxidanten var däremot inte irreversibelt bunden till nanopartiklarna, utan frigjordes från deras ytor och blev aktiv under åldringen.
QC 20110128
Zheng, Yanling. "Polymeres zwitterioniques : synthese, proprietes en solution et en masse." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13092.
Повний текст джерелаGarcía, Romero Iván. "Kombinatorische Methoden zur Bestimmung der chemischen Heterogenität und der Phasenseparation von statistischen Copolymeren." [S.l.] : [s.n.], 2006. http://elib.tu-darmstadt.de/diss/000754.
Повний текст джерелаGérard, David. "Etude de la réaction Carbamate / Aldéhyde et son application vers de nouveaux matériaux thermodurcissables." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI105.
Повний текст джерелаThe vast majority of the crosslinking systems currently involved in the synthesis of thermosetting resins require the use of hazardous components for the environment as well as for the operators. Polyurethanes (PU), which are among the most important polymer materials thanks to their versatile properties, are not an exception to this issue. Polyurethanes are indeed classically obtained by polyaddition between a polyol and a polyisocyanate, the synthesis of the latter involving the use of highly toxic phosgene derivatives. The development of safer and more eco-friendly alternatives to those already existing crosslinking systems are thus of particular interest for both academic and industrial research teams. The aim of this project is to explore a new alternative for the synthesis of crosslinked polyurethanes via the reaction between primary carbamate and aldehyde functions. Although being known since the 19th century, this reaction hasn’t been used to make crosslinked polymers until very recently, without exploring biobased alternatives. This work starts with the comprehensive study of the carbamate / aldehyde reaction through model reactions in order to validate the feasibility of this new route. A proposed mechanism completes this fundamental study aiming to understand the key parameters of this reaction. In the next part of our work, we applied this knowledge to multifunctionnal systems, in order to obtain linear PU oligomers and PU networks using biobased precursors
Tobing, Singa D. "Synthesis and structure property studies in acrylic pressure sensitive adhesives /." Diss., 1999. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9955179.
Повний текст джерелаChen, Wei-Chih, and 陳威志. "Synthesis and blue-light photopolymerization of branched polyurethane acrylates." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/m6mqnt.
Повний текст джерела國立臺北科技大學
化學工程與生物科技系生化與生醫工程碩士班
106
Hyperbranched polyurethane acrylates (HBPUAs) were prepared via one-pot step-wise polymerization of A2/B3/BR monomers. The weight-average molecular weight of HBPUAs were approximately 1900 to 11000 g/mol. The exothermic reaction heat during blue-light photoinduced polymerization was reduced to 233 J/g with addition of the 30% of HBPUA into triethylene glycol dimethacrylate (TEGDMA) from 304 J/g of that without HBPUA. With addition of the HBPUA, the volumetric shrinkage during photopolymerization can be decreased to 7.8 % from 12.4 %. The prepared HBOUA can be as a bio-medical material, such as blue-light curable bio-adhesive.
HUANG, PO-HAN, and 黃柏翰. "Synthesis and Properties of Nanocomposites , Copolymers and Particle Toughened PMMA Based on Novel Acrylates." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/n4687j.
Повний текст джерела義守大學
生物技術與化學工程研究所
102
This research includes three major parts. The first part of the research is to copolymerize methyl methacrylate with three different monomers, which are dipropylene glycol mono-methyl ether acrylate(DOBA), propylene glycol mono-methyl ether acrylate(OBA1) and its isomers, OBA2, through the method of solution polymerization with different proportions, aollowing by the investigation of the thermal stability and the optical properties of the copolymers. The results turn out that compared with PMMA, the copolymers have an enhancement in thermal stability and better potentiality in toughness enhancement. The second part of the research is to prepare nanocomposites, POBA1/clay, POBA2/clay and PDOBA/clay. We added different proportions of modified clay into monomers of OBA1, OBA2 and DOBA. Then, we synthesized nanocomposites, POBA1/clay, POBA2/clay and PDOBA/clay by miniemulsion polymerization, and conduct investigation of their structure, thermal stability. The results show that the nanocomposites we made are intercalated nanocomposites with partially-exfoliated structure, which have a great improvement in their thermal stability. All in all, PMMA has the best optical property of all plastics. It not only excels in weatherability, but also has a wide range of application. However, PMMA is brittle, which makes its impact resistance unideal. Therefore, the third part of the research is to produce particle toughened PMMA to improve its impact resistance. In the experiments, we prepare particles of POBA1, POBA2 and PDOBA by emulsifier-free emulsion polymerization. Then, by the method of mass polymerization, we scatter different proportion of those particles onto the monomers of MMA to create particle toughened PMMA and test the thermal stability, mechanical properties and other characteristics of the particle toughened PMMA. The result shows that the particle toughened PMMA we create have an enhancement in toughness and further increase its thermal stability.
Rzayev, Javid. "Controlled free -radical polymerization at high pressures: Synthesis and properties of poly(α-substituted acrylates)". 2004. https://scholarworks.umass.edu/dissertations/AAI3118328.
Повний текст джерелаHuang, Ling-Wei, and 黃凌威. "Synthesis of UV-Curable Urethane Acrylates and Their Application for High Transparency and Blast-resistence Glass Protective Coating." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/26255105588818810665.
Повний текст джерела國立臺灣大學
化學工程學研究所
97
In this study, a series of UV-curable urethane acrylate resin, applied as blast resistant film on the glass substrate were developed. This blast resistant film was designed to be able to stick the glass debris when the glass is broken. We could find the influences of structures with different urethane linkage and crosslink density on thermal, optical, and mechanical properties of urethane acrylate. In order to reach better protective effect, the resin must have outstanding adhesion strength to glass and mechanical property. To improve the interaction between resin and glass, the 3-Methacryloxypropyltrimethoxysilane (MSMA) was used to modify glass surface through sol-gel process to form the chemical bonds with the urethane acrylate resins during the UV-curing process. Tensile property of urethane acrylate resin can be improved by blending high toughness PU to form semi-IPNs structure. In other way, we can design and synthesis the resin which has proper density of urethane linkage and crosslink point by changing average molecular weight of urethane acrylate monomer. IBp051kDUA exhibit the best protective effect in the blast-resistance test, and IBp051kDUA-coated glass has about 90% visible light transmittance.
Lin, Yen-Ting, and 林彥廷. "Synthesis of dimeric acrylates for single component / mixed chiral LC materials and Study of stabilized Blue Phase LCs." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/86162186893583286210.
Повний текст джерела國立交通大學
照明與能源光電研究所
102
We synthesize a series of asymmetric bimolecular single component / blending chiral liquid crystal material, and the chemical structures of these compounds were characterized by H1-NMR、EA, and the liquid crystalline phases before and after the illumination polymerization behavior of all compounds were identified from the result of POM. We have successfully synthesized bimolecular acrylate group material A66CB doped with ZLI-4572, S811 and the blue phase are obtained. When A66CB blends 4wt% of ZLI-457 under illuminated polymerization in blue phase, the widest blue phase temperature can be extended to about 21 °C. In addition, single molecule blue phase dimers A66*CB, which have chiral center in the central of molecular, were synthesized. We synthesize the dimer A66*CB with acrylate group that introduced chiral center successfully has the blue-phase range about 3 °C by single component. Using the A66*CB blending 76*CB and RM257 blending 76*CB for comparison and found that when A66*CB blends 76*CB (10:90), there is the widest blue phase temperature range about 5 °C, and after illuminated polymerization, the blue-phase temperature range will increase. The reactive dimer A66*CB and RM257 after illuminated polymerization in blue-phase, we discovered that A66*CB series can stabilize the blue-phase range better than RM257.
Bagoury, Mohamed al [Verfasser]. "Synthesis of aqueous polymer colloids based on saccharide monomers and alkyl acrylates through emulsion polymerization / von Mohamed al-Bagoury." 2005. http://d-nb.info/974074527/34.
Повний текст джерелаHuang, Yang-Kai, та 黃揚凱. "Synthesis of Poly(meth)acrylates in Different Type and Topology by (Atom Transfer) Radical Polymerization and Vitrimerization by Introducing Dynamic Covalent Bond of β-Hydroxy Ester Moiety". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/nmyc4t.
Повний текст джерела國立中興大學
化學工程學系所
107
In the first part, we synthesized different type random copolymers of P(MMA-r-GMA) and gradient copolymers of P(MMA-grad-GMA) by radical polymerization or atom transfer radical polymerization. We incorporated crossliker, catalyst, and different PGMA amounts of random copolymers/gradient copolymers to obtain PMMA-based vitrimers and access dynamic covalent networks through dynamic covalent bonds (DCBs). Then, we discussed PMMA-based vitrimers’s mechanical property, thermal property and the influence of the different type vitrimers on thermal healing performance. In the second part, we aimed at improving the mechanical properties of PMMA-based vitrimers. We synthesized different topology of triblock copolymers P(MMA-r-GMA)-b-PnBA-b-P(MMA-r-GMA) and hyperbranched-core star-shape copolymers s[P(MMA-r-GMA)-h-P(nBA- co-BPEA)]. These two kinds of copolymers were also prepared to PMMA-based vitrimers. By introducing soft part (i.e., PnBA) and manipulations of polymer topology, we investigated the thermal and mechanical properties. We can also obtain well thermal healing performance and significant improve on the mechanical property which can be reveal from microstructures within the PMMA-based vitrimers.
Liao, Sheng-che, and 廖聖哲. "Kinetics for Synthesis of n-Butyl Acrylate." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/83931210451270723321.
Повний текст джерела國立臺灣科技大學
化學工程系
93
The heterogeneous kinetics and adsorption behavior of butyl acrylate over an acidic cation-exchange resin, Amberlyst 35, were investigated with a packed-bed reactor. The esterification was performed at temperatures between 333.15 K and 360.75 K. Besides changing temperature,we also focused on the effect of different molar ratios and mass diffusion resistance. Finally, the correlation between by-product and adsorption was studied. The equilibrium conversion of acrylic acid was found to increase with increasing both temperature and the composition of feedθB0. The relative adsorption strengths for the reacting species were determined from adsorption experiments. The results indicated that the magnitude of adsorption strengths followed the order of water > acrylic acid > n-butanol > butyl acrylate. The kinetic data were correlated with the quasi-homogeneous, non- idea-quasi-homogeneous, Langmuir-Hinshelwood-Hougen-Waston, and the Eley-Rideal models, while the model parameters were determined. The LHHW model yielded the best representation for the kinetic behavior of liquid-solid catalytic synthesis of butyl acrylate.
LI, YI SHIOU, and 李易修. "Kinetics Study of Synthesis of Butyl-acrylate." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/82770466618094158170.
Повний текст джерела長庚大學
化學工程研究所
90
The esterification of 1-butanol with acrylic acid catalyzed by sulfuric acid in the absence of solvent was studied in a 500cm3 batch stirred reactor. Experiments were carried out with different acid/alcohol mole ratios and different amounts of sulfuric acid in the temperature range of 70 to 90℃ and at 1 atm. It was found that the esterification of 1-butanol with acrylic acid is a reversible reaction and the esterification step follows a first-order rate expression with respect to each component. A kinetic model was proposed to describe such a reversible esterification reaction catalyzed by sulfuric acid. The equilibrium constants were determined from the equilibrium concentrations of each component while the rate constants were calculated by correlating the experimental data with the developed kinetic model.