文献类型：期刊文献

英文题名：Distinct strategy for the improvement of conductivity and electromagnetic shielding properties of MWCNTs/PLA/PBS composites: Synergistic effects of double percolation structure and UV aging

作者：Jia, Shikui Yan, Zongying Zhu, Yan Zhang, Qifeng Zhang, Xiangyang Coates, Phil Liu, Wei Zhao, Zhongguo

第一作者：Jia, Shikui

通信作者：Jia, SK[1];Liu, W[2]

机构：[1]Shaanxi Univ Technol, Sch Mat Sci & Engn, Natl & Local Joint Engn Lab Slag Comprehens Utiliz, Hanzhong, Peoples R China;[2]Univ Bradford, Interdisciplinary Res Ctr Polymer Engn, Sch Engn Design & Techol, Bradford, West Yorkshire, England;[3]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang, Peoples R China;[4]Shaanxi Univ Technol, Sch Mat Sci & Engn, Natl & Local JointEngineering Lab SlagComprehens U, Hanzhong 723000, Peoples R China;[5]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：Shaanxi Univ Technol, Sch Mat Sci & Engn, Natl & Local Joint Engn Lab Slag Comprehens Utiliz, Hanzhong, Peoples R China

通信机构：corresponding author), Shaanxi Univ Technol, Sch Mat Sci & Engn, Natl & Local JointEngineering Lab SlagComprehens U, Hanzhong 723000, 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：0

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20230913630726);Scopus(收录号：2-s2.0-85148605660);WOS:【SCI-EXPANDED(收录号:WOS:000936855100001)】；

基金：The authors would like to express their gratitude to The Project Supported by National Natural Science Foundation of China (52263004), The Project Supported by Natural Science Basic Research Plan in Shaanxi Province of China (2021JM-486), and Research Program of the Science and Technology Department of Guizhou Province (QianKeHeJiChu-ZK[2022]YiBan179). The authors are also thankful to School of Materials Science and Engineering, Shaanxi University of Technology, and School of Mechanical & Automotive Engineering, Interdisciplinary Research Centre in Polymer Engineering, University of Bradford, UK, for the analytical facilities.

语种：英文

外文关键词：conductivity; electromagnetic shielding; multi-walled carbon nanotubes; polybutylene succinate; polylactic acid; UV aging

摘要：To reveal a relationship among crystallization, conductivity and electromagnetic shielding properties of full biodegradable polymer after ultraviolet (UV) aging, polybutylene succinate (PBS)-based composites with different weight ratios of multi-wall carbon nanotubes (MWCNTs)/polylactic acid (PLA) /PBS masterbatch were processed via melt-compounding approach. Morphology of the MWCNTs/PLA/PBS masterbatch prepared by Pickering emulsion method was confirmed by scanning electron microscope (SEM) and transmission electron microscope (TEM) observation. Comprehensive effects of different content of masterbatch and UV aging time on the morphology, crystallization, and electrical and electromagnetic shielding properties of MWCNTs/PLA/PBS composites were shown by Fourier transform infrared spectroscopy (FTIR), SEM, wide angle X-ray diffraction (WAXD), differential scanning calorimeter (DSC), polarizing microscope (POM), ultra-depth of field optical microscope, resistance tester, and vector network analyzer. Compared with PBS composite with 0.1 wt% MWCNTs, the electrical conductivity of PBS composite with the MWCNTs/PLA/PBS masterbatch increased by two orders of magnitude, and dispersed morphology for the composite showed double percolation structure. After UV aging, both MWCNTs/PBS composites and the PBS composites with the MWCNTs/PLA/PBS masterbatch, their surface presented burnt yellow and parts of flaws, while both their electrical conductivity and total electromagnetic shielding effectiveness gradually increased. Moreover, with the increasing of UV aging time, not only crystal size of these PBS-based composites became large, but also their crystal interface became clearer. Furthermore, when UV aging time reached 528 h, the tensile strength of 0.6 M/PLA/PBS composite decreased by 12.6%, while its total electromagnetic shielding effectiveness increased by 39.8%, compared with the composite without UV aging.