文献类型：期刊文献

英文题名：Morphology and mechanical properties of poly(butylene adipate-co-terephthalate)/potato starch blends in the presence of synthesized reactive compatibilizer or modified poly(butylene adipate-co-terephthalate)

作者：Wei, Dafu[1,2];Wang, Hao[2];Xiao, Huining[2];Zheng, Anna[1];Yang, Yang[3]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada;[3]North China Elect Power Univ, Sch Environm Sci & Engn, Baoding, Peoples R China

年份：2015

卷号：123

起止页码：275

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20150800540884);WOS:【SCI-EXPANDED(收录号:WOS:000353754000032)】；

基金：The authors thank the NSERC Sentinel-Bioactive Paper Network, NSERC Green Wood Fibre Network (Canada), AIF/Al-Pack Co. (Canada) and NSF China (No. 51379077) for funding this work.

语种：英文

外文关键词：PBAT; TPS; Biodegradable film; Mechanical properties; Reactive extrusion

摘要：The biodegradable poly(butylene adipate-co-terephthalate)(PBAT)/thermoplastic starch (TPS) composite has received considerable attention because of the environmental concerns raised by solid waste disposal. However, the application of PBAT/TPS blends was limited due to the poor mechanical properties originating from the incompatibility between PBAT and TPS. In this work, two approaches were developed to improve the mechanical properties of PBAT/TPS blends. One approach is to use compatibilizers, including the synthesized reactive compatibilizer - a styrene-maleic anhydride-glycidyl methacrylate (SMG) terpolymer, and the commercial compatibilizer (Joncryl-ADR-4368). The chemical structures of SMG were analyzed with H-1 NMR and FT-IR. The other approach is to use the modified PBAT (M-PBAT) to replace part of PBAT in the PBAT/TPS blends. M-PBATs with higher molecular weight were obtained via reactive extrusion of PBAT in the presence of a chain extender. The better dispersion of TPS in PBAT was observed in SEM images when using M-PBAT, leading to the higher tensile strength and elongation at break of PBAT/TPS blends. However, the elongation at break decreased in the presence of compatibilizer (SMG or 4368), though the tensile strength remained in a similar level or slightly higher. Overall, the tensile strength and the elongation at break of the resulting biodegradable PBAT/M-PBAT/TPS blends (TPS=40 wt%) were above 27.0 MPa and 500%, respectively, which is promising for various applications, including packaging and agricultural mulching films. (C) 2015 Elsevier Ltd. All rights reserved.