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Relevant bibliographies by topics / Cationic polymerization

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Dissertations / Theses

Academic literature on the topic 'Cationic polymerization'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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Dissertations / Theses on the topic "Cationic polymerization"

1

Endsor, Robert M. "Living cationic polymerization." Thesis, Aston University, 1997. http://publications.aston.ac.uk/9597/.

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The kinetics of the polymerization of styrene iniated by 1-chloro-1-phenyltehane/tin (IV) chloride in the presence of tetrabutylammonium chloride have been studied. Dilatometry studies at 25 °C were conducted and the orders of reaction were established. Molecular weight studies were conducted for these experiments using size exclusion chromatography. These studies indicated that transfer/termination reactions were present. The observed kinetics may be explained by a polymerization mechanism involving a single propagating species which is present in low concentrations. Reactions at 0 °C and -15

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2

Hajime, Kammiyada. "Ring-Expansion Cationic Polymerization：A New Precision Polymerization for Cyclic Polymers." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225628.

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3

Tapper, Tristan T. "Living cationic polymerization of isobutene." Thesis, Aston University, 1999. http://publications.aston.ac.uk/9621/.

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The polymerization of isobutene initiated by 1-chloro-1-phenylethane has been investigated, and molecular weight studies conducted using size exclusion chromatography. Polymerizations carried out in a 40/60 (v/v) mixture of dichloromethaneIcyclohexane, using titanium (IV) chloride as a catalyst in the presence of pyridine at -30 °C were found to be controlled and living. The number average molecular weights of the polymers increased linearly with monomer conversion, and the molecular weight distributions were between 1.15 and 1.20. Efficiencies of initiation were between 80 and 100%, and evide

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4

Ma, Yinghua. "Living cationic polymerization of styrene monomers." Thesis, Aston University, 2000. http://publications.aston.ac.uk/9636/.

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This thesis describes an experimental investigation of synthesis of polystyrene under various polymerization conditions such as solvent polarity, temperature, initial concentrations of initiator, catalyst, monomer and added salts or co-catalyst, which was achieved using the living cationic polymerization technology in conjunction with gel permeation chromatography (GPC) and NMR spectroscopy. Polymerizations of styrene were conducted using 1-phenyl ethylchloride (1-PEC) as an initiator and tin tetrachloride (SnCI4) as a catalyst in the presence of tetra-n-Butylammonium chloride (nBu4NCI). Effec

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5

Amer, Laila I. "Interfacial cationic polymerization and its application in microencapsulation." Thesis, University of Strathclyde, 1990. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21162.

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Direct polymerization on the solid surfaces of three crystalline biologically active drugs has been carried out in this study to provide a thin polymer film (capsule wall) around the crystals. This polymer film would act as a release controlling layer of the encapsulated crystals into a surrounding fluid. To date there has not been to our knowledge, any study of release control by the encapsulation of solids by direct polymerization. This thesis describes a new technique based on solid/liquid interfacial cationic polymerization which was carried out in an entirely non-aqueous medium to encapsu

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6

Gouardères, Frédéric P. "The cationic ring-opening polymerization of cyclic ethers." Thesis, Aston University, 1995. http://publications.aston.ac.uk/9681/.

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The kinetics and mechanisms of ring opening polymerization and copolymerizntion of different cyclic ethers were studied using mainly a cationic system of iinitiation. BF30Et2/ethanediol. The cyclic ethers reacted differently showing that ring strain and basicity are the main driving forces in cationic ring opening polymerizaion. In most cases it was found that the degree of polymerization is controlled kinetically via terminations with the counterion and the monomers, and that the contribution of each type of reaction to the overall termination differs markedly. The Gel permeation chromatograp

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7

Gupta, M. K. "Photo and thermo latent initiators for cationic polymerization." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2008. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2655.

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8

Aoshima, Sadahito. "Syntheses of Functional Polymers by Cationic Polymerization: Living Polymerization and Controlled Chain Transfer." Kyoto University, 1986. http://hdl.handle.net/2433/74688.

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9

Kesharwani, Tanay. "Studies in electrophilic cyclization, palladium migration and cationic polymerization." [Ames, Iowa : Iowa State University], 2008. 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:3330842.

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10

Sato, Kotaro. "CATIONIC POLYMERIZATION IN AQUEOUS MEDIA WITH WATER-TOLERANT LEWIS ACIDS." Kyoto University, 2000. http://hdl.handle.net/2433/151505.

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