期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 183, 期 -, 页码 267-275出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.04.102
关键词
Polymer blends; Cellulose nanofibrils; PBAT; Thermoplastic starch; Twin screw extrusion
资金
- Erasmus+ KA107 program
In this study, the mechanical performance of PBAT/TPS blends was enhanced by incorporating cellulose nanofibrils (CNFs), with optimal performance achieved at 8 wt% of CNFs. The addition of CNFs resulted in a more uniform distribution of TPS nodules within the PBAT matrix, leading to improvements in material properties.
Poly(butylene adipate-Co-terephthalate)/thermoplasticized starch PBAT/TPS blends are among the most produced biodegradable plastic for wide application packaging, sharing more than 20% of the global production capacity of bioplastics. However, this class of material suffers from poor mechanical strength in comparison of neat PBAT, especially when the TPS content exceeds 30 wt%. Aiming at enhancing the mechanical performance of PBAT/TPS blends while maintaining relatively high TPS content, cellulose nanofibrils (CNFs) was incorporated into the TPS phase using twin screw extrusion. The effects of CNFs content on the microstructure, mechanical properties, melt-rheology and humidity absorption were investigated. An enhancement in the tensile strength and modulus was noted with the inclusion of CNFs, with optimal performance attained at 8 wt% of CNFs. A narrowing in the distribution of the TPS nodules within the PBAT matrix was also observed with the addition of CNFs, which is expected to be on the origin of the main evolution in the mechanical, rheological and humidity observed. Because of the availability of CNFs, biodegradability and facile processability, the ternary PBAT-TPSCNFs blends might contribute to improve the performance of this class of biodegradable bioplastic. (c) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据