文献类型：期刊文献

英文题名：Green Preparation of Biodegradable PBAT Foam Modified with Bio-Based Epoxidized Cardanol Using Supercritical Fluid Foaming

作者：Yuan, Jie[1]; Xue, Kun[1]; Gao, Xiulu[1]; Chen, Yichong[1]; Zhao, Ling[2]; Hu, Dongdong[1]

机构：[1] State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Xinjiang University, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240286890)

语种：英文

外文关键词：Blowing agents - Butenes - Carbon dioxide - Effluent treatment - Expansion - Foams - Packaging materials - Shrinkage - Supercritical fluid extraction - Supercritical fluids

摘要：Poly (butylene adipate-co-terephthalate) (PBAT) foam materials have emerged as potential alternatives to conventional packaging materials. However, they are hindered by issues like lower foaming expansion ratios and shrinkage. A series of biodegradable Epoxidized Cardanol (EC) modified PBAT foams were prepared by using supercritical carbon dioxide (CO2) foaming. The addition of EC can not only enhance crystallization temperature and stiffness, but also improve rheological properties to promote polymer foamability. When the EC content reached 0.6 wt%, lightweight foams with a highest initial expansion ratio (Rv) of 48.4 were produced before shrinkage. N2 as co-blowing agent was introduced to reduce the shrinkage of PBAT foams, resulting in the production of microcellular foam with a stable Rv of 12.9. EC improved the foamability of PBAT while also introducing the co-blowing agent N2 to resist shrinkage, providing insights for large-scale production of lightweight biodegradable foam. ? 2024, The Authors. All rights reserved.