文献类型：期刊文献

英文题名：Epoxy chain extender grafted pyrophyllite/poly(ethylene terephthalate) composites with enhanced crystallinity and mechanical properties

作者：Li, Juan Li, Bo Huang, Shaowen Luo, Shanshan He, Shengbao Gao, Chengtao Liu, Shan

第一作者：Li, Juan

通信作者：He, SB[1];Liu, S[2]

机构：[1]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang, Peoples R China;[2]China Natl Tobacco Qual Supervis & Test Ctr, Zhengzhou 450001, Peoples R China;[3]Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang, Peoples R China

通信机构：corresponding author), China Natl Tobacco Qual Supervis & Test Ctr, Zhengzhou 450001, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2022

卷号：43

期号：9

起止页码：6404-6415

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20223312580092);Scopus(收录号：2-s2.0-85135805057);WOS:【SCI-EXPANDED(收录号:WOS:000851495400001)】；

基金：The authors acknowledge financial support from the National Natural Science Foundation of China (Grant Nos. 52163011, 52063007). The Guizhou Provincial Science and Technology Projects (Grant Nos. [2021]9, [2020]4Y223, [2022]058); Scientific and Technological Achievements Transformation Project of Guizhou Province (Grant No. [2022]034); The Talent Cultivation Project of Guizhou Province (Grant No. [2020]6024); The Science and Technology Project of Baiyun District (Grant No. [2019]24); The Natural Science Foundation of Guizhou Provincial Department of Education (Grant No. QianJiaoHe KY Zi[2021]267); The Academic Novice Cultivation and Innovative Exploration Project (GZLGXM-22) supported by Guizhou Provincial Science and Technology Department.

语种：英文

外文关键词：additives; crystallization; mechanical properties; nanocomposites; polyesters

摘要：The surface-grafting modification of nano clay has become increasingly important for improving the practical application of clays. In this study, an epoxy chain extender ADR-4468 was used to modify the surface of pyrophyllite (Prl), and the effect of ADR-4468-modified pyrophyllite (A-Prl) on the properties of poly(ethylene terephthalate) (PET) and PET/poly(ethylene glycol-co-1,3/1,4-cyclohexanedimethanol terephthalate) (PETG) composites was investigated. The modified composites were characterized by Fourier transformed infrared spectroscopy, X-ray diffraction and TG, which proved that the A-Prl was successfully synthesized, and the addition of ADR-4468 did not change the crystal structure of pyrophyllite. The grafted ADR-4468 improved the agglomeration of Prl, and some A-Prl reached nano-scale dispersion in PET and PET/PETG composites. The rheological properties, crystallization behavior and mechanical properties of PET and PET/PETG nanocomposites were systematically investigated. The results showed that A-Prl was an effective nucleating agent for PET, which significantly improved the crystallization properties of PET composites. The A-Prl also improved the comprehensive mechanical properties of PET and PET/PETG nanocomposites. In particular, the impact toughness of A-Prl/PET/PETG composite with 1.5 wt % A-Prl was increased by 120% compared with that of pure PET. The functional additive is expected to be used in the preparation of high-performance and recyclable PET composites.