通过与生物酚聚硅氧烷共聚改性提高聚碳酸酯的透氧性和热稳定性

Improving Oxygen Permeability and Thermostability of Polycarbonate via Copolymerization Modification with Bio-Phenol Polysiloxane.

作者信息

Pang Xiaoyan, Ge Xin, Ji Jianye, Liang Weijie, Liu Ruoling, Chen Xunjun, Yin Guoqiang, Ge Jianfang

机构信息

College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.

School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.

出版信息

Polymers (Basel). 2019 Aug 3;11(8):1302. doi: 10.3390/polym11081302.

DOI:10.3390/polym11081302

PMID:31382630

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6722555/

Abstract

As a new kind of functionalized polysiloxane with chemical reactivity, bio-phenol polysiloxane was synthesized through facile heterogeneous catalytic route. Bio-phenol polysiloxane/polycarbonate (Si/PC) block copolymer was synthesized via a three-step approach, and the effect of the amount of bio-phenol polysiloxane on the properties of Si/PC copolymer was then studied. The structure and morphology of Si/PC copolymer were characterized, showing that, when the amount of bio-phenol polysiloxane reached 20%, the pyrolysis temperature of Si/PC copolymer at 5% weight loss was 450.8 °C which was 76.1 °C higher than pure PC. The oxygen permeability of 20%Si/PC copolymer membrane was 502.65 cm/m·24h·0.1MPa, which was increased by 128.4% compared with pure PC membrane. The mechanical property and hydrophobicity of Si/PC copolymer had been improved.

摘要

作为一种具有化学反应活性的新型功能化聚硅氧烷，生物酚聚硅氧烷通过简便的多相催化路线合成。生物酚聚硅氧烷/聚碳酸酯（Si/PC）嵌段共聚物通过三步法合成，然后研究了生物酚聚硅氧烷的用量对Si/PC共聚物性能的影响。对Si/PC共聚物的结构和形态进行了表征，结果表明，当生物酚聚硅氧烷的用量达到20%时，Si/PC共聚物在失重5%时的热解温度为450.8℃，比纯聚碳酸酯高76.1℃。20%Si/PC共聚物膜的透氧率为502.65 cm/m·24h·0.1MPa，与纯聚碳酸酯膜相比提高了128.4%。Si/PC共聚物的力学性能和疏水性得到了改善。