Fiber-induced crystallization in polymer composites: A comparative study on poly(lactic acid) composites filled with basalt fiber and fiber powder

被引：27
作者：
Pan, Hongwei [1 ]
Wang, Xiangyu [1 ,2 ]
Jia, Shiling [1 ]
Lu, Zifeng [1 ,2 ]
Bian, Junjia [1 ]
Yang, Huili [1 ]
Han, Lijing [1 ]
Zhang, Huiliang [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Polymer Ecomat, Changchun 130022, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2021年 / 183卷
基金：
美国国家科学基金会;
关键词：
Biodegradable; Poly(lactic acid); Basalt fiber; MECHANICAL-PROPERTIES; POLYLACTIC ACID; MORPHOLOGY; SHEAR; TRANSCRYSTALLINE; CRYSTALLINITY; BEHAVIOR; BLENDS; GROWTH;
D O I：
10.1016/j.ijbiomac.2021.04.104
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The poly(lactic acid) (PLA) composites with the silane coupling agent treated basalt fiber (SBF) and basalt fiber powder (SBFP) were prepared. The crystalline morphology, mechanical properties, and heat resistance of PLA/SBF/SBFP composites were investigated. The results indicated that SBF or SBFP not only acted as heterogeneous nucleating agents for PLA crystallization but also improved the mechanical properties and heat resistance of PLA. Morphological analyses showed that SBFP could play nucleating role to reduce the spherulites size of PLA, and SBF could restrict the mobility of PLA chains and construct interface crystallization for PLA during isothermal crystallization process. The composites with higher SBF loading, the "Transcrystalline-network" built in the com-posites significantly improved the heat resistance properties of PLA. Due to the synergistic effect of SBF and SBFP, the PLA/SBF/SBFP composites showed high heat deformation temperature (HDT), especially after isothermal crystallization, the HDT increased to 150.5 degrees C for the PLA/SBF/SBFP 50/10/40 composite, much higher (about 190%) than that of pure PLA (71.7 degrees C). (C) 2021 Elsevier B.V. All rights reserved.
引用
收藏
页码：45 / 54
页数：10
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