Sorption and Diffusion of Supercritical Carbon Dioxide in a Biodegradable Polymer

被引：11

作者：

Lin, Shiquan ^{[1
]}

Yang, Jing ^{[1
]}

Yan, Jiefeng ^{[1
]}

Zhao, Yaping ^{[1
]}

Yang, Bin ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS | 2010年 / 49卷 / 02期

关键词：

biodegradable; desorption; diffusion; poly(butylene adipate-co-terephthalate); sorption; supercritical carbon dioxide; HIGH-PRESSURE; CO2; SOLUBILITY; CRYSTALLIZATION; POLY(EPSILON-CAPROLACTONE); COPOLYESTERS; BEHAVIOR; MELTS; POLY(ETHYLENE-TEREPHTHALATE); METHACRYLATE);

D O I：

10.1080/01495930903352308

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A gravimetric method was used to study the sorption and diffusion of supercritical carbon dioxide in a temperature range from 40 degrees C to 80 degrees C and a pressure range from 8.0 to 18.0 MPa in a biodegradable polymer, namely poly(butylene adipate-co-terephthalate) (PBAT). The PBAT presented Fickian behavior and Fick's diffusion model was applied to determine the amount of carbon dioxide present in the samples after a predetermined exposure time as well as the diffusion coefficients. The variations of diffusion coefficients of CO2 for the sorption under supercritical conditions and desorption at ambient conditions as well as equilibrium sorption amounts of CO2 with variations of pressure and temperature were determined and compared.

引用

页码：286 / 300

页数：15

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