Constructing In situ microfibrillar PA6/PLA composites with high strength and high toughness by a strong shear flow field

被引：0
|
作者：
Sun, Jing [1 ,2 ]
Li, Jian [2 ]
Huang, Anrong [2 ]
Shi, Min [2 ]
Luo, Shanshan [2 ]
Li, Juan [2 ]
Luo, Zhu [1 ]
Qin, Shuhao [2 ]
机构：
[1] Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China
[2] Guizhou Mat Ind Technol Inst, Guiyang, Peoples R China
来源：
POLYMER | 2024年 / 311卷
基金：
中国国家自然科学基金;
关键词：
Poly(lactide); In situ microfibrillar composites; Lamellae; Shish-kebab structure; POLY(LACTIC ACID); THERMOPLASTIC POLYURETHANE; MECHANICAL-PROPERTIES; CRYSTALLIZATION; BLENDS; SHISH; PLA; BIOCOMPOSITES; MORPHOLOGY;
D O I：
10.1016/j.polymer.2024.127544
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In situ microfibrillar PA6/PLA composites (MFCs) with high strength and toughness were produced via a multistage stretching extrusion system. The PA6 microfibrils induced the growth of PLA crystals perpendicular to the PA6 microfibrils and significantly enhanced the mechanical properties of the MFCs. Notably, the PLA-9 sample with 9 wt% PA6 microfibrils achieved excellent tensile strength and elongation at break (79.1 MPa and 77.8 %, respectively), which were 1.3 and 13.4 times than those of neat PLA. During the tensile process, the PA6 microfibrils underwent plastic deformation accompanied by the detachment and fragmentation of the PLA lamellae.
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页数：11
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