文献类型：期刊文献

英文题名：The essential role of PBS on PBAT foaming under supercritical CO2 toward green engineering

作者：Hu, Dongdong[1];Xue, Kun[1];Liu, Zhen[3];Xu, Zhimei[1];Zhao, Ling[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]Xinjiang Univ, Coll Chem Engn, Urumqi 830046, Peoples R China;[3]Frostburg State Univ, Dept Phys & Engn, Frostburg, MD 21532 USA

年份：2022

卷号：60

外文期刊名：JOURNAL OF CO2 UTILIZATION

收录：;EI(收录号：20221411924704);WOS:【SCI-EXPANDED(收录号:WOS:000789873400003)】；

基金：Funding Natural Science Foundation of Shanghai (20ZR1413700) , National Natural Science Foundation of China (21706063) , and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Poly (butylene adipate-butylene terephthalate); Polybutylene succinate; Open-cell content; Anti-shrinkage; Supercritical CO2 foaming

摘要：Poly (butylene adipate-co-terephthalate) (PBAT) foams display serious shrinkage problems when supercritical CO2 is utilized as the blowing agent. In this work, a series of fully biodegradable PBAT/polybutylene succinate (PBS) foams were prepared by using supercritical CO2. The introduction of PBS improves the mechanical and crystallization properties. In the foaming process, PBS causes the deterioration of melt strength, promotes the cell nucleation, and decreases the cell wall thickness, facilitating the formation of open-cell structure. Owing to the synergistic effect of the increased open-cell content and the improvement of stiffness, 80/20 blend of PBAT and PBS exhibited the highest expansion ratio of 18.4 without shrinkage. PBS plays multiple essential roles in the foaming and shrinking process with CO2 green blowing agent, providing a widely applicable anti-shrinkage strategy, which also affords shed light upon the large-scale preparation of the biodegradable polyester foams.