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Synthesis, characterization, and modeling of ABC triblock terpolymers: the effect of block sequence

Triftaridou, Aggeliki I. and Vamvakaki, Maria and Patrickios, Costas S. and Lue, L. (2002) Synthesis, characterization, and modeling of ABC triblock terpolymers: the effect of block sequence. Macromolecular Symposia, 183 (1). pp. 133-138. ISSN 1022-1360

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Abstract

Four equimolar terpolymers comprising ten units from each of the monomers methoxy hexa(ethylene glycol) methacrylate (HEGMA), 2(dimethylamino)ethyl methacrylate (DMAEMA) and methyl methacrylate (MMA) were prepared by group transfer polymerization (GTP), and characterized by gel permeation chromatography (GPC) and proton nuclear magnetic resonance (H-1 NMR) spectroscopy to confirm size homogeneity and composition. These terpolymers were the three block sequence isomers, ABC, BAC and ACB, as well as the statistical isomer. Aqueous solutions of the terpolymers were characterized by dynamic light scattering and turbidimetry to determine the hydrodynamic sizes and cloud points. The results indicated micelle formation in the triblocks, and absence of micellization with the statistical terpolymer. in general, a strong dependence of the hydrodynamic size and cloud point on polymer architecture was observed. Monte Carlo simulations on non-aggregating isomeric terpolymers of similar structure also showed a strong dependence of the radius of gyration on polymer architecture.

Item type: Article
ID code: 38867
Keywords: triblock terpolymers , block sequence, Chemistry, Physical and theoretical chemistry, Materials Chemistry, Organic Chemistry, Polymers and Plastics, Condensed Matter Physics
Subjects: Science > Chemistry
Science > Chemistry > Physical and theoretical chemistry
Department: Faculty of Engineering > Chemical and Process Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 02 Apr 2012 14:49
    Last modified: 05 Sep 2014 04:35
    URI: http://strathprints.strath.ac.uk/id/eprint/38867

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