Synthesis of amphiphilic PVC‐b‐poly(hydroxypropyl acrylate) (PHPA)‐b‐PVC block copolymers with low PHPA contents and different molecular weights by (Single Electron Transfer)—(Degenerative Chain Transfer) living radical polymerization |
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| Authors: | Nuno Rocha Jorge FJ Coelho Pedro ML Cardoso Bianca Barros Pedro M Gonçalves MH Gil JT Guthrie |
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| Affiliation: | 1. CIEPQPF, Department of Chemical Engineering, University of Coimbra, , Coimbra, 3030‐290 Portugal;2. Department of Colour Science, School of Chemistry, University of Leeds, , Leeds, LS2 9JT UK;3. Cires S.A. – Companhia Industrial de Resinas Sintéticas, , Estarreja, 3864‐752 Portugal |
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| Abstract: | The aim of this work was to synthesize new amphiphilic block copolymers, based on poly(vinyl chloride) (PVC) and containing poly(hydroxypropyl acrylate) (PHPA), by using the controlled/“living” radical polymerization (CLRP) method. Various block copolymers containing a small proportion of PHPA were prepared, each having a different molecular weight. The technique used was the same as that employed in the production of commercial PVC made by free‐radical polymerization. The materials were characterized in terms of their molecular structure, morphology, particle size, and surface and thermal properties. The CLRP preparation of block copolymers that are based on PVC and have low contents of other monomer units opens the possibility of synthesizing new materials whose properties are close to those of PVC but have new properties that may considerably enhance their performance. The incorporation of small amounts of PHPA into PVC block copolymers provided greater surface hydrophilicity and improved thermal stability while maintaining relevant processing properties, such as particle size and average molecular weight, so that they close to those of conventional PVC homopolymers. J. VINYL ADDIT. TECHNOL., 19:157‐167, 2013. © 2013 Society of Plastics Engineers |
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