文献类型：期刊文献

英文题名：Preparation of lightweight PBS foams with high ductility and impact toughness by foam injection molding

作者：Xu, Jiangbin Xing, Jinfu Luo, Mei Li, Tingyu Liu, Bujin Zeng, Xiangbu Jiang, Tuanhui Wu, Xian He, Li

第一作者：Xu, Jiangbin

通信作者：Jiang, TH[1];He, L[1];Jiang, TH[2];He, L[2];Wu, X[3]|[1444079a3983e896b4cb6]吴显;

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;[2]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China;[3]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2024

卷号：24

期号：1

外文期刊名：E-POLYMERS

收录：;EI(收录号：20242716618586);Scopus(收录号：2-s2.0-85197237745);WOS:【SCI-EXPANDED(收录号:WOS:001257626400001)】；

基金：The authors express their sincerethanks to National Natural Science Foundation of China(No. 51863003 and No. 52063008), Research start-up Foundation for Advanced Talents of Guizhou Institute of Technology (XJGC20190668), the Thousand Level InnovativeTalents Project of Guizhou Province (No. GCC[2022]045), the Foundation of Guizhou Scientific Research Institute (QianKeFuQi2023(001), 2023(035)) for their financial support.

语种：英文

外文关键词：polybutylene succinate; foam injection molding; cell morphology; ductility; impact toughness

摘要：Lightweight and highly tough polymer foams play a crucial role in resource conservation and environmental protection. One such biodegradable material that has garnered attention for its excellent processability and mechanical properties is polybutylene succinate (PBS). However, achieving PBS foams with superior mechanical properties remains a significant challenge. In this study, we prepared PBS foams with higher ductility and impact toughness using foam injection molding. The improved ductility of these foams can be attributed to the highly oriented cellular structure along the direction of the tensile load, transforming from regular circular shapes to tubular ones. This cellular structure effectively blunts crack tips, thereby enhancing impact performance. When the mold-opening distance is 0.4 mm, the fracture elongation of PBS foams is 486%, the tensile toughness is 4,586 MJ center dot cm(-3), and the impact strength is 12.73 kJ center dot cm(-2). These values are 98%, 53%, and 29% higher than those of unfoamed PBS, respectively. As the mold-opening distance increases, the relative density of PBS foams decreases, leading to a reduction in fracture elongation, tensile toughness, and impact strength. Interestingly, the specific impact strength of PBS foams consistently surpasses that of unfoamed PBS, and increases proportionally to the mold-opening distance.