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Cationic poly(butylene succinate) copolyesters
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DOI：10.1016/j.eurpolymj.2015.12.012.png)
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摘要
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The synthesis, characterization and comparative evaluation of properties of two series of cationic PBS copolyesters bearing respectively ammonium and tributylphosphonium side groups, are reported. The copolyesters with contents in ionic units up to 50 mole-% as well as the fully ionic homopolyesters were prepared by polycondensation in the melt catalyzed by CALB or TBT. Their M-n, ranged between 20,000 and 5000 g mol(-1) depending of composition and the type of ionic group that is involved. All the copolyesters were non-water soluble and showed good thermal stability. They were semicrystalline with melting temperatures and enthalpies decreasing with the ionic contents. The interactions inter played by the ionic groups restricted largely the molecular mobility and caused a significant increase in the melt viscosity and glass transition temperature of PBS and a decrease in crystallization rate. Both ammonium and phosphonium containing PBS copolyesters were able to be coupled with sulfonated PBS to generate ionic polymer blends with modified crystallizability. The presence of both ammoniums and phosphoniums provided PBS with remarkable antimicrobial activity against gram-positive and gram-negative bacteria. (C) 2015 Elsevier Ltd. All rights reserved.
Keyword:
Poly(butylene succinate)
Polyelectrolytes
Cationic polyesters
Enzymatic polymerization
Ionic polymeric complexes
Biocidal polyesters
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IF:
6.3
论文数:
1.3W
被引数:
3.6W
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Poly(butylene succinate) and its copolymers: Research, development and industrialization聚丁二酸丁二醇酯及其共聚物的研究、开发与产业化
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