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- Title
Development of in-situ nanofibrillated poly(butylene succinate)/polytetrafluoroethylene composites with elevated rheology, crystallization, and foaming performance.
- Authors
Xu, Mingxian; Bing, Xiaohu; Wu, Minghui; Wu, Fei; Ren, Qian; Wang, Long; Zheng, Wenge
- Abstract
Herein, the nanofibrillated poly(butylene succinate)/polytetrafluoroethylene (PBS/PTFE) composites were prepared. The relaxation time was prolonged by PTFE fibrils, resulting in an enhancement in storage modulus and melt viscosity. Differential scanning calorimetry was used to study the non-isothermal crystallization kinetics at different cooling rates. These results showed that PTFE fibrils could promote crystallization nucleation and excessive fibrils could inhibit crystallization growth. Lightweight PBS/PTFE composite foams were fabricated using core-back foam injection molding. Loading the PTFE fibrils increased the cell density of PBS foam from 2.7×106 to 1.4×108 cells/cm3 and improved the cell morphology of PBS foam. By controlling the foaming parameter, the tensile properties of PBS-based composite foam with 1 wt.% PTFE were improved overall, and the Izod impact strength was increased by 9–69% compared with the PBS foam.
- Subjects
POLYTEF; POLYBUTENES; CRYSTALLIZATION kinetics; RHEOLOGY; CRYSTALLIZATION; BUTENE; DIFFERENTIAL scanning calorimetry; INJECTION molding
- Publication
Journal of Materials Science, 2024, Vol 59, Issue 23, p10572
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-024-09760-9