Dissertations / Theses on the topic 'Sodium sulfonates'
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Neuendorf, Annette J., and n/a. "High Pressure Synthesis of Conducting Polymers." Griffith University. School of Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040218.112214.
Full textNeuendorf, Annette J. "High Pressure Synthesis of Conducting Polymers." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/366536.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
Full Text
Blosch, Sarah Elizabeth. "Structure-Property Relationships of Isoprene-Sodium Styrene Sulfonate Elastomeric Ionomers." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/86362.
Full textMaster of Science
Musa, Haruna. "Synthesis, characterisation and applications of end-functional poly(sodium-4-styrene sulfonate)." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.508080.
Full textLeroux, Amélie. "Implant ligamentaire bioactif et biodégradable : élaboration, fonctionnalisation et étude des mécanismes." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCD054.
Full textThe rupture of the anterior cruciate ligament of the knee is a common affection which mainly occurs in young and active population. Because of its joint location and its poor vascularization, this ligament does not heal spontaneously. The “gold-standard”, consisting of using autograft, has many disadvantages and the research focuses on the development of synthetic ligament implants. In this context, this thesis studies and evidences the possibility of a new ligament with bioactive and biodegradable features, made of polycaprolactone (PCL) grafted with poly(sodium styrene sulfonate) (pNaSS). The results presented in this manuscript evaluate the initial choice of raw PCL, its characterization, its functionalization, its mechanical properties after processing, its degradation mechanism and its in vitro and in vivo biological impact. At the interface of engineering, chemistry, mechanics and biology fields, we demonstrated that: the pNaSS grafting accelerates the PCL degradation while protecting the surface during the first six months; the mechanical properties of PCL are adapted to the ligament application; in vitro the pNaSS grafting promotes cell growth, cell distribution, cell density, cell spread, growth factor production, and maintenance of gene expression; and finally that in vivo the pNaSS grafting allows to reduce joint inflammation and postoperative osteoarthritis while promoting tissue recolonization
Huang, Xiao Hui. "Protective effects of sodium tanshinone II A sulfonate against sunitinib induced cardiotoxicity in H9c2 cell and zebrafish." Thesis, University of Macau, 2014. http://umaclib3.umac.mo/record=b3132193.
Full textYeniay, Secil. "Sulfonated Styrene-co-maleic Acid And Its Derivatives As Superplasticizers In Concrete." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609455/index.pdf.
Full textsuperplasticizers&rdquo
, were introduced to the concrete industry. They have gained wide acceptance because of their many advantages. The addition of superplasticizers to concrete improves the workability and strength of concrete. In this study, the effect of the chemical structure of poly (4-styrenesulfonic acid-co-maleic acid) sodium salt (SSAMA), which contains both sulfonic and carboxylic acid groups, which is a new superplasticizer, was analyzed. Two different molecular weights of PEG (polyethylene glycol monomethyl ether) were grafted to this water-soluble copolymer at different weight compositions. The structures of synthesized copolymers were verified by FTIR and NMR analyses. The molecular weight difference of the grafted copolymers with different side chain lengths was determined by dilute solution viscosimetry. The effects of chemical structure of grafted copolymers on the fluidity of cement paste and the mechanical properties of the mortars were investigated. The zeta potential measurements revealed the interactions between the cement particles and polycarboxylate type superplasticizers. The maximum fluidity was achieved for the PEG grafted copolymer with the weight ratio 3:3. The mechanical properties of this copolymer showed the highest flexural and compressive strength compared to other copolymers. The addition of various Li salts to SSAMA affected the ionic medium, therefore, the dispersion performance of cement paste and the mechanical properties of the mortars improved. The mixture of LiCl: SSAMA in 1:1 mol ratio exhibited the maximum fluidity compared to other Li salts and their compositions. This mixture gave the highest flexural strength but the mixture of Li2CO3 in 1:1 composition gave the highest compressive strength in each salt mixtures.
Morand, Karine. "Evaluation de l'activité anticancéreuse et antiangiogénique in vitro de copolymères solubles composés d'acide methacrylique et de styrène sulfonate de sodium." Paris 13, 2007. http://www.theses.fr/2007PA132040.
Full textThe Laboratoire de Biomatériaux et Polymères de Spécialité has developped soluble copolymers composed of methacrylic acid and sodium styrene sulfonate. These copolymers have antiangiogenic and antitumor activities in vitro. They inhibit cell adhesion to the extracellular matrix mediated by integrins. We have shown this activity on a breast cancer cell line and on primary cultured endothelial cells. The lack of adhesion prevents the recruitment of actin cytoskeleton and induces the inhibition of cell proliferation. Cell migration ans differentiation are also inhibited and the density of microtubules decreased. The efficacy of copolymers depends o their composition and on cell type. The copolymer composed of 30% methacrylic acid and of 70% sodium styrene sulfonate seems to be the most efficient. The copolymers induce anoïkis in endothelial cells without any toxicity. These new copolymers are an interesting strategy in antiangiogenic therapies. We continue to study them to better know their mechanism of action and to evaluate their in vivo efficiency
Dejeu, Jérôme. "Films de deux polymères auto-assemblés : chlorhydrate de polyallylamine (PAH) et polystyrène sulfonate de sodium (PSS) : mécanisme de croissance et stabilité." Besançon, 2007. http://www.theses.fr/2007BESA2005.
Full textThe growth mechanism and the stability of polyelectolyte films elaborated by multi-steps self association were investigated using principally fixed angle laser reflectometry. The first part of the investigation addressed the conversion of the reflectometric output into the deposited weight of polymer. In the case of a monolayer we have established the range of validity of a linear relationship between the deposited weight and the reflectometric output. In the case of a multilayer film we have used and explored a new approach developed in the laboratory allowing the determination of the stepwise change of the refractive index and the film thickness, leading eventually to the deposited weight. The second part of the work is dedicated to the experimental elaboration of films with the polyelectrolytes poly(allylamine,HCl) and poly(styrene sulfonate). The influence of the principal operational parameters was screened (pH, ionic strength, type of electrolytes, molecular weight of polymers, washing between deposition steps, etc). The charge balance and the incorporation of small ions were determined step by step. The elaboration of films on the flat silica substrate in the reflectometric cell was compared with that on colloidal silica. Complementary characterization of the polymer films were made with AFM and Focused ion beam imaging (FIB-SIM), which allowed the determination of the films morphology and roughness. Very thick films were constructed. A growth mechanism was proposed to explain the transition between an early stage (first steps), influenced by the property of the surface and later steps where the growth only depends on the interaction between the two polymers. Finally the stability of 1 to 5 bilayers films was examined upon change of the pH of the solution
Machado, Douglas Silva. "Estudo do comportamento de sistemas hidrotrópicos." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-25072012-085958/.
Full textIn this work the behavior of solutions of the hydrotropes sodium toluene sulfonate (TSS) and sodium n-butylbenzene sulfonate (NBBSNa) was studied, concerning the aggregation/association characteristics of this molecules by the use of Nuclear Magnetic Resonance (NMR 1H), small angle x ray scattering (SAXS), static light scattering (SLS) and wide angle x ray scattering (WAXS). Measurements with other hydrotropic molecules like sodium styrene sulfonate (ESS), sodium salicylate (SalS), sodium benzoate (BS) were realized in order to discuss the results. The NBBSNa molecule was synthesized, purified and characterized. The experiments of NMR revealed changes in the chemical shift with the concentration, indicating the changes of the surround environment in what molecules are embedded. For the technique of SLS, the second virial coefficient of the solutions of TSS could be evaluated with and without the addition of a solute. By the SAXS data the size of the aggregate of NBBSNa was determined using the SASfit software. The result was compared with a classic surfactant sodium dodecylbenzene sulfonate (DBSNa). NBBSNa is a spherical system of three electronic densities. All the other hydrotropes studied shows a liquid scattering behavior. By WAXS experiments a correlation of the molecules at short distance was observed.
Rýcová, Eva. "Difúzní vlastnosti opačně nabitých organických molekul v roztocích hydrofilních polyelektrolytů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240539.
Full textElbayed, Karim. "Logiciels pour l'analyse et l'exploitation des mesures de relaxation magnétique nucléaire : étude approfondie des phénomènes de relaxation croisée dans un système de deux spin 1/2." Nancy 1, 1990. http://www.theses.fr/1990NAN10381.
Full textMarchand, Jean-Pierre. "Relaxation magnétique nucléaire dans les solutions ternaires de polyacrylonitrile ou de polyacrylonitrile-co-méthallylsulfonate de sodium : détermination et caractérisation du diagramme de phases." Grenoble 1, 1993. http://www.theses.fr/1993GRE10193.
Full textCoelho, Katiuscia da Silva. "Estudos ecotoxicológicos com ênfase na avaliação da toxicidade de surfactantes aniônicos aos cladóceros Daphnia similis, Ceriodaphnia dubia e Ceriodaphnia silvestrii." Universidade Federal de São Carlos, 2008. https://repositorio.ufscar.br/handle/ufscar/1938.
Full textFinanciadora de Estudos e Projetos
The main anionic surfactants world widely used are the sodium dodecyl benzene sulfonate (LAS) and sodium dodecyl sulfate (DSS), which are mainly used in the manufacturing of domestic and personal hygiene products. As a consequence of the great and increasing consumption of LAS and DSS there is an increasing wareness regarding the adverse effects of these compounds to the organisms and environment. The present study aimed to evaluate the acute and chronic toxicity of the compounds LAS and DSS to the cladocerans Daphnia similis, Ceriodaphnia dubia and Ceriodaphnia silvestrii. It was also evaluated the toxicity of the water and sediments of four reservoirs and one stream of São Paulo State Analyses of LAS concentrations in the water of these reservoirs were also performed by Liquid chromatography. Acute toxicity tests indicated a value of CE(I)50;48h for LAS of 14.17 mg L-1 to D. similis, 11.84 mg L-1 to C. dubia and 13.51 mg L-1 to C. silvestrii. Significant changes in the viability of the cladoceran offsprings were observed for C. dubia and C. silvestrii exposed to the LAS, with values of CENO equal to 1.0 mg L-1 to C. dubia and 2.5 mg L-1 to C. silvestrii. It was concluded that the maximum permissible concentration of 0.5 mg L-1 surfactants as established by the resolution CONAMA nº. 357/2005 (Brazilian Ministry of Environment) in order to protect aquatic communities is adequate, considering the sensitivity of the native species C. silvestrii. The results of the acute toxicity tests with DSS indicated a CE(I)50;48h value of 12.82; 4.37 and 5.42 mg L-1, for D. similis, C. dubia and C. silvestrii, respectively. A CENO value of 2.0 mg L-1 was obtained in the chronic toxicity tests for C. silvestrii. The surfactant LAS was detected in all the water samples collected in the Lobo (Broa), Lagoa Dourada and Fazzari reservoirs, but at concentrations lower than 5 mg L-1 (the method limit of detection). The toxicity tests with environmental samples revealed that there is no toxicity in the water of the Lobo and Lagoa Dourada sampled, however the water of Monjolinho Reservoir was toxic to D. similis and Fazzari stream was toxic to D. similis and C. dubia. Only the sediment of Monjolinho Reservoir was not toxic to cladocerans.
Os principais surfactantes aniônicos disponíveis no mercado mundial são o dodecil benzeno sulfonato de sódio (LAS) e o dodecil sulfato de sódio (DSS), utilizados principalmente em produtos de limpeza doméstica e de higiene pessoal. Devido ao grande consumo mundial de LAS e de DSS há uma crescente preocupação sobre os efeitos adversos destes compostos no ambiente e aos organismos. Este trabalho teve por objetivo avaliar a toxicidade aguda e crônica do LAS e do DSS aos organismos-teste Daphnia similis, Ceriodaphnia dubia e Ceriodaphnia silvestrii. Foi também avaliada a toxicidade da água e dos sedimentos em quatro reservatórios e um riacho do estado de São Paulo por meio de testes de toxicidade aguda e da análise quantitativa do surfactante LAS. Os testes de toxicidade aguda indicaram uma CE(I)50;48h do LAS de 14,17 mg L-1 para D. similis, 11,84 mg L-1 para C. dubia e 13,51 mg L-1 para C. silvestrii. Nos testes crônicos realizados foi observada significativa alteração viabilidade da progênie de C. dubia e C. silvestrii exposta ao LAS, com valores de CENO igual a 1,0 mg L-1 para C. dubia e 2,5 mg L-1 para C. silvestrii. Pode-se concluir que o valor máximo permissível de surfactantes de 0,5 mg L-1, estabelecido pela Resolução CONAMA nº. 357/2005 em águas destinadas à proteção das comunidades aquáticas, é adequado para a espécie nativa C. silvestrii. Nos testes de toxicidade aguda de DSS foram obtidos valores de CE(I)50;48h de 12,82; 4,37 e 5,42 mg L-1, para D. similis, C. dubia e C. silvestrii, respectivamente. No ensaio de toxicidade crônica obteve-se valor de CENO igual a 2,0 mg L-1 para C. silvestrii. O surfactante LAS foi detectado nas amostras de água dos Reservatórios do Lobo (Broa), Lagoa Dourada e Represa do Monjolinho em concentração inferior a 5 mg L-1. Os testes revelaram que não há toxicidade aguda aos cladóceros da água da Lagoa Dourada e do Reservatório do Lobo, havendo, contudo, toxicidade da água da Represa do Monjolinho para D. similis e da água do Córrego do Fazzari para os cladóceros D. similis e C. dubia. Somente a amostra de sedimento da Represa do Monjolinho não causou toxicidade aos cladóceros.
Kasseh, Mohamed. "Interactions en phase aqueuse de copolymères acrylamide-co-2-acrylamido-2-méthyl propane sulfonate de sodium avec des sels d'ammoniums quaternaires alkylés en présence ou en absence de submicroparticules de silice." Aix-Marseille 3, 2002. http://www.theses.fr/2002AIX30027.
Full textWe have studied the interactions of two copolymers of acrylamide and sodium acrylamido-2-methyl propane sulfonate, AM-AMPS-20 (20% in moles) and AM-AMPS-5, with the bromides of : -tetramethylammonium (TMAB), -decamethylene bis-trimethylammonium (10(TA)2B2), and -dodecylbenzyldimethylammonium (12FDAB). The complexation isotherms determined by selective permeation of a hollow fiber membrane, rheology, laser Doppler electrophoresis and conductivity measurements show that, in opposition to TMA+, 12FDA+ and 10(TA)2++ cations complex with sulfonates of both copolymers. Associations of polyions-12FDAB complexes are disclosed by dynamic light scattering. The onset of micelle formation on polyions is determined by pyrene fluorescence spectroscopy. Adsorption of AM-AMPS-5 onto colloidal silica in presence of 12FDAB is established through individual adsorption isotherms and visualised by transmission electron microscopy
Stiborský, Filip. "Srovnávací studie interakcí tenzidů s hyauronanem a jinými polyelektrolyty." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216817.
Full textMorelon, Isabelle. "Dispersion d'une solution micellaire de tensio-actif au cours de sa migration en milieu poreux." Rueil-Malmaison : Paris : Institut français du pétrole ; diffusion Technip, 1986. http://catalogue.bnf.fr/ark:/12148/cb34874099m.
Full textStřondalová, Hana. "Ionogenní fluorescenční sondy ve výzkumu koloidních systémů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216960.
Full textAwan, Faisal Ur Rahman. "Electrokinetic investigation of coal fines in fractured and porous media." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2022. https://ro.ecu.edu.au/theses/2523.
Full textPapežíková, Hana. "Potenciál využití semi-interpenetrovaných polymerních sítí na bázi poly-HEMA v moderních nosičových systémech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449370.
Full textChang, Chi-yun, and 張綺芸. "Conformations of Poly(sodium 4-styrene sulfonate in Dilute Methanol/H2O Solutions." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/65020859842045120909.
Full textHsia, Chien-Hsun, and 夏建勳. "Pretreatment of sodium tanshinone IIA sulfonate protects rat cardiomyocytesfrom epirubicin-induced cardiotoxicity." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/04060081145820126810.
Full text中山醫學大學
醫學研究所
101
Background and Motivation: Since the 1960s, Adriamycin started as an anti-cancer drug. So far, despite the push into a new chemotherapy drugs, but either alone or in combination with other chemotherapy drugs, Anthrocycline -based chemotherapy remains an important cornerstone. Which Epirubicin is the most commonly used chemotherapy drug, but its unique heart toxicity affects its use, or even serious side effects affecting the survival of cancer patients. Epirubicin may damage by free radicals, iron ions involved in the redox reaction, a calcium ion concentration and starting a series of signal transduction induced apoptosis,then, cardiac toxicity resulting generation. There is still no definitive treatment for far advanced cardiotoxicity . Danshen (丹蔘) is a important traditional Chinese medicine used in gynecological and cardiovascular diseases. Modern research has found that the anti-oxidative stress effect, open a cardioprotective effect Danshen series of studies. Materials and Methods: In this study, by H9C2 rat embryonic heart cells, cell culture, MTT analysis, flow cytometry, and Western blotting experiments. Explore Epirubicin lead to heart toxicity mechanisms and Danshen derivative Sodium Tanshinon IIA sulfate (STS) intervention study. Results: study confirmed the heart of STS on Epirubicin induced toxicity does have a protective effect. The mechanism in addition to reducing free radical damage, reducing mitochondrial damage, more importantly, within the endoplasmic reticulum-based regulation of signal transduction: reducing calpain, caspase 12 to inhibit apoptosis. In addition, STS can also be activated AKT, JNK and NFκB pathway down to achieve the purpose of regulation of apoptosis. Conclusion: The results of this study suggested Danshen has a protective effect to Epirubicin induced cardiotoxicity and possible mechanism for instructions. Expect future clinical treatment of cancer patients can be used in adjunctive therapy to reduce side effects of Epirubicin- based chemotherapy.
Sun, Tzu-Chiao, and 孫慈矯. "The Effect of Sodium dodecylbenzene sulfonate on the Physical Property of the Shampoo." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/24972664216206978361.
Full text中國文化大學
應用化學研究所
88
Experimental results show that the surface tension of shampoo appears to decrease with increasing the concentration of sodium dodecylbenzene sulfonate, and that the viscosity of shampoo increase with increasing the concentration of sodium dodecylbenzene sulfonat, as a result of increased free volume resulting from the intermolecular interaction. The experimental results also indicate that the contact angle of oil drop on the surface of the glass plat is seen to increase with increasing the concentration of sodium dodecylbenzene sulfonat. Although the contact angle of oil drop on the glass surface is smaller than 90∘, it is considered to possess partially efficacy of removing oil stain. In order to increase the capability of removing oil stain, we tried to increase the concentration of sodium chloride and to fix the concentration of other ingredients used in the formulation of shampoo. It was found that the viscosity of shampoo is seen to increase with increasing the concentration of sodium chloride, as a result of the intermolecular interaction. It is seen that the contact angle of oil drop on the glass surface appears not to increase with an increase of the concentration of sodium chloride, indicating that use of sodium chloride in the formulation of shampoo has no efficacy of removing oil stain.
Lin, Yi-Chen, and 林奕成. "Isolation of a bacterium degrading sodium dodecylbenzene sulfonate and characterization of desulfonation enzyme." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/08374050443210937562.
Full text國立中央大學
生命科學研究所
89
Linear alkylbenzene sulfonates (LAS) are the most widely used anionic surfactants today. These compounds accumulate in the environment and show toxic effects on organisms in polluted water. This strain utilized sodium dodecylbenzene sulfonate (DBS) as sole source of sulfur in a minimal salts medium containing 0.3 % succinate. The bacterium can’t be identified by BioLog method in Gram-negative database. Further identification by 16S rDNA sequence was performed and showed 98 % identity to many Enterobacter species. Phylogenetic tree was constructed from an alignment of 1,193 nucleotides of 16S rDNA sequences showing the highest phylogenic relationship with Enterobacter agglomerans. And the bacterium was designated Enterobacter sp. SH3. The growth of strain was demonstrated as a function in the decreasing of DBS, which was analyzed by liquid chromatography-mass spectroscopy (LC-MS). It’s specific that Enterobacter. sp. SH3 can utilize several alkanesulfonates and aromatic sulfonates as sole sulfur source to grow. The action of the release of sulfite from DBS was measured using Ellman’s reagent followed by the absorbance increased at 430 nm as an enzyme assay. The highest enzyme activity was observed in the addition of 500 mM NADPH and 3 mM FMN in 0.3 ml 10 mM Tris-HCl, pH 9.0. The preliminary biochemical feature of the enzyme acting in Enterobacter sp. SH3 was showed to be similar to an FMNH2-dependent alkanesulfonate monooxygenase from Escherichia coli EC1250. A series of column chromatography was applied to purify the desulfonation enzyme. The active fraction from chromatofocusing chromatography was at pI of 5.18-4.12. The native molecular weight was at the range of 60-150 kDa by Sephacryl S-200 gel filtration chromatography. This highly purified desulfonation enzyme pool (240 mg) was further separated by 2D-gel electrophoresis and identified by MALDI-TOF Mass.
楊士奇. "Design and Synthesis of Arene Tetra Sulfonate Sodium Salts as Anti-Noroviral Agents." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/20372501602813812002.
Full text國立清華大學
化學系
101
Norovirus is a category of small non-enveloped and single-stranded RNA viruses from Caliciviridae family, that virus is a major cause of epidemics of acute nonbacterial gastroenteritis in the world. Approximately 50% of all gastroenteritis outbreaks have been reported to be caused by norovirus in the United States. Although outbreaks of norovirus infection often occur in the world, but there is no specific medicine to treat people with norovirus illness. There is thus an unmet need for potent antiviral compounds. Prof. Bolognesi at the university of Milano found two high-potency norovirus inhibitors: Suramin and 8,8'-[carbonylbis(imino-3,1-phenylenecarbonylimino)]bis- 1,3,5-naphthalene-trisulphonic¬ acid hexasodium salt (NF023), thus we cooperate with his team and focus on NF023, that we hope to improve the activity by synthesizing structural analogs of NF023 as anti-norovirus agents. We successfully synthesized three new conjugate compounds containing urea linker by using triphosgene under the condition of adjusted pH value, and confirmed the struture by 1H-NMR, 13C-NMR and high resolution mass spectrometry. From water solubility experiment and partition coefficient data, we can conclude we increase drug lipophilicity successfully compared with NF023 and Suramin.
Liou, Ling-Shih, and 劉玲詩. "Entry in emulsion polymerization using a mixture of sodium polystyrene sulfonate-b-polystyrene and sodium dodecyl sulfate as the surfactant." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/02280937206324094248.
Full text逢甲大學
化學工程學所
97
This study has prepared sodium polystyrene sulfonate – b –polystyrene (NaPSS-b-PS), which exhibits surface activity with NaPSS block as the hydrophilic moiety and PS block as the hydrophobic moiety. Using mixtures of NaPSS-b-PS and sodium dodecyl sulfate (SDS) as the emulsifier, we performed the emulsion polymerization of styrene and investigate the entry of oligomeric radicals into the emulsion particles. The surfactant NaPSS-b-PS was prepared by using the stable free-radical polymerization technique. Using benzoyl peroxide and 2, 2, 6, 6- tetramethyl- piperidinooxy (Tempo) as initiator , we prepared NaPSS macroradical first, then polymerized with styrene to have the PS block. The NaPSS block has Mw of 66700, and the PS block has Mw of 29300, according to the gel permeation chromatographic determination. The value of polymer number per particle (np)increases monotonously with increasing the volume – average particle diameter (Dv). The Dv at turning point of the recipe series of using singlesurfactant of SDS (D series) is smaller than that of the recipe series of using mixed-surfactant of SDS and NaPSS-b-PS (E series). The E series have the lower capture rate (hence, the PS has higher molecular weight), and the higher polymerization rate. Compared the results using NaPSS (Mw=70000) and SDS reported elsewhere, we found our E series have the smaller particle size, lower capture rate , and the faster polymerization.
夏鴻韻. "Study the Behavior of the Interaction among Sodium Sulfonate, Nonylphenyl-polyoxyether and Cellulose Polymers." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/76025224141613205483.
Full text文化大學
應用化學研究所
82
This research is mainly to explore: 1)the effect of varying the concentrations of RnSC3Na with different carbon chain lengths in water on their surface tensions, 2)the effect of varying the concentrations of RnSO3Na with different carbon chain lengths in the presence of fixed concentration of methylcelluluse (MC) on their surface tensions, 3)the effect of varying the concentrations of RnSO3Na with different carbon chain lengths in the presence of fixed amount of sodium carboxy methyl celuluse (Called CMC) on their surface tensions, 4)the effect of varying the concentrations of hexaethyl cellulose (termed HEC) in the presence of fixed amount of Nonyl phenylpoly ethylem ether (NPn:n=6,8,10,12,16) on their surface tensions, 5)the effect of varying the respective concentrations of HEC,MC and CMC in the presence of fixed amount of NPn(N=6,8,10,12,16) in water on their surface tensions, 6)the effect of varying the shear rate for NPn'S(n=6,8,10,12,16) with different concentrations in the presence of HEC and MC, respectively, on their shear rate, 7)the effect of varyingthe shear rate for NPn'S(n=6,8.10,12,16) with different concentrations in the presence of HEC (0.6%), MC(0.8%) and CMC(0.4%), respectively, on their viscosities, and 8)the effect of varying the concentrations of HEC, MC and CMC on their viscosities. The experimental results indicate that the surface tension of C2H5SO3Na in the presence of fixed amount of MC and CMC, respectively, decreases rapidly with increasing the concentration of C2H5SO3Na. In addition, since the plot of the surface tension versus the concentration of C2H5SO3Na containing fixed amount of MC does not provide the critical micelle concentration, therefore, MC is seen not to be considered as a surfactant. The surface tension of aqueous RnSO3Na decreases with increasing the concentration and carbor chain length of RnSO3Na and then reaches a pleatu, as the concentration of RnSO3Na further increases. But, under the condition of carbon chain length of RnSO3Na increased from 2 to 10, coupled with the fixed amount of CMC increased from 0.01% to 0.3%, the surface tension of aqueous RnSO3Na decreases insignifcantly, as the concentration of RnSO3Na increases. Experimental results demonstrate that the viscosity of aqueous MC exhibits non-netwon behavior and that, in the presence of NPn's concentration increased from 0% to 2% by wight, the viscosity of aqueous MC increases with increasing the shear rate and then reached a pleatu as the shear rate further increases. This is because the interation between MC molecules themselves and between MC and NPn molecules takes place since this interation leads the molecules adsorbed at the air-water interface to make rearrangement and to become even more ordered, therefore, the viscosity increases. However, increased shear rate will not change the structure of the MC nialecules and, therefore, the viscosity remains as a constant.
Yang, Yun-min, and 楊贇民. "Dynamic Light Scattering and Viscoelasticity from Poly(sodium 4- styrene sulfonate) in Methanol/H2O Solutions." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/23867128046776085372.
Full text元智大學
化學工程學系
90
In this study we use dynamic light-scattering(DLS), membrane osmotic pressure and dynamic viscoelasticity analyzer to study the dynamic and physical properties from NaPSS in methonal/H2O (4/1 wt ratio) solution at 25℃. The concentration was ranged from 0.1 to 4.0 mg/mL. Dynamic light scattering experiments were carried out at scattering angles in the range of 30°£q£120°. Frequency of dynamic viscoelasticity analyzer was between 1 and 100 1/sec. From the experimental data of viscosity and membrane osmotic pressure, we found that when [NaPSS]>1.0 mg/mL the solution was close to the theta-condition. DLS data revealed two relaxation modes, i.e. fast mode and slow mode. Fast mode is a diffusion mode and is a hydrophobic aggregation of polymer molecules and the fast mode relaxation time tf, increases upon dilution. When [NaPSS]<1.0 mg/mL, the slow mode is an intra-particle motion of secondary ionic aggregation and ts was increases upon dilution. When [NaPSS]>1.0 mg/mL, the slow mode is a viscoelastic mode and ts was independent of NaPSS concentration. From the study of dynamic viscoelasticity data show that n1’≈2 and n1” ≈1 at low frequency region, which are consistent with Zimm and Rouse theory, indicating that the solutions are liquid state.
Tseng, Chin-Hsin, and 曾志新. "The diffusion and adsorption of drugs in Poly(vinyl alcohol-g-sodium styrene sulfonate)[PVA-g-SSS] Hydrogels." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/60513088143102297766.
Full text國立臺灣科技大學
高分子工程系
92
Polyvinyl alcohol gels crosslinked with sodium styrenesulfonate(SSS) with SSS grafting ratio from 1.3×10-3 to 3.5×10-3 were prepared and drugs(Benzoic acid , Vitamin K3 and Caffeine)permeation and diffusion through gels were determined. The mesh size of gels were determined with hydrogel water contents(swelling)and elasticity data. The diffusion coefficients increase with swelling, and the solubility increases with drug size. Diffusion coefficient and solubility were presented in terms of the ratio of drug diameter to that of mesh size. The diffusion is a controlling step driving the permeation. The tortuosity of drug diffusion data in gels was calculated, which is significantly greater than the predicted value from the transport model in rigid porous media. This deviation is due to the complex structure of gels. Solute diffusion data are fitted with free volume model. We found that the slope of solute diffusion data versus the reciprocal of free volume is smaller than free volume estimation from the relation of ln(D/D0) and (1/H-1). In the hydrogels, the steady-state adsorption factors of the solutes with higher solubility is smaller than the solute with lower solubility. The initial adsorption factors increase with SSS grafting ratio, because SSS have ionic groups interacting with the solutes. The adsorption increase with the mesh size,and the surface adsorption has greater effect for the solute with lower solubility.
Cheng, Chun-Hsiang, and 鄭君祥. "The Effect of Sodium Tanshinone IIA Sulfonate and Tanshinone IIA on Epirubicin Induces Apoptosis of BT-20 Breast Cancer Cell." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/10053538437726990981.
Full text大葉大學
生物產業科技學系碩士在職專班
99
Breast cancer is the leading cause of cancer death in women all over the world. Anthracycline remained the 1st line of adjuvant chemotherapy. Epirubicin (one of anthracycline) and Taxotere were the most frequently used agents for treating breast cancer, and but it easily leads cardiomyopathy. However, the cardiotocixity of anthracycline remained unsolved. Danshen, (Salvia miltiorrhizae) is a traditional Chinese herbal medicine with cardiovascular protective effect and often used by cancer patients during chemotherapy. Tanshinone IIA (Tan IIA), a lipid-soluble compound, is extracted from Danshen and Tanshinone IIA Sulfonate (STS) a water-soluble derivative of tanshinone IIA, were the two most well known and abundant component of Danshen. However, the pharmacologic effects of Danshen up on the anti-cancer effect of anthracycline in breast cancer patients were unknown. In order to evaluate the effect of STS and Tan IIA on Epirubicin induces apoptosis of BT-20 breast cancer cell.The cytotoxicity was assayed by WST-1. Hoechst staining, and flow cytometry measurement were used to assess apopotic body and apoptosis. Fluorescence intensity by flow cytometry measurement was used to assess Epirubicin uptake. Western blotting was used to evaluate the expression phosphorylation AKT, AKT and PARP-1(Poly(ADP-ribose) polymerase-1) protein. The result showed that Tan IIA inhibited BT-20 breast cancer cell growth and induced apoptosis in a time and dose-dependent manner. Tan IIA had a synergistic effect with epirubicin by inducing apoptosis through increase epirubicin uptake and decreasing the phosphorylation of AKT. STS had no effect on the cell viability of BT-20 cells. However, when used with epirubicin, STS decreased the epirubicin-induced cytotoxicity and apoptosis in BT-20 breast cancer cells. The antagonistic effect of STS on epirubicin-induced cytotoxicity in BT-20 breast cancer cells occurred concomitantly with the reduced epirubicin uptake and the increased phosphorylation of AKT. STS decreased the uptake of epirubicin in BT-20 breast cancer cells and blocked epirubicin-induced apoptosis. Therefore, STS could protect breast cancer cells against epirubicin-triggered cytotoxicity and taxotere-triggered apoptosis. Taken together, taking Danshen in patient undergoing chemotherapy with anthracyclin to be noted that the proportion of each component, especially the percentage of STS. Avoid to interference chemotherapy pharmacological effects.
Ramaswamy, Divya. "Effect of surfactants on methane hydrate formation and dissociation." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-05-2880.
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