Relationship between crystalline structure of polyamide 6 within carbon fibers and their mechanical properties studied using Micro-Raman spectroscopy

被引：36
作者：
Uematsu, Hideyuki [1 ,2 ]
Kawasaki, Takahiro [1 ]
Koizumi, Koutarou [1 ]
Yamaguchi, Ayaka [1 ]
Sugihara, Shinji [1 ]
Yamane, Masachika [1 ]
Kawabe, Kazumasa [3 ]
Ozaki, Yukihiro [4 ,5 ]
Tanoue, Shuichi [1 ,2 ]
机构：
[1] Univ Fukui, Grad Sch Engn, Bunkyo Ku, Fukui 9108507, Japan
[2] Univ Fukui, Res Ctr Fibers & Mat, Bunkyo Ku, Fukui 9108507, Japan
[3] Ind Technol Ctr Fukui Prefecture, Fukui 9100102, Japan
[4] Kwansei Gakuin Univ, Sch Sci & Technol, Dept Chem, Sanda, Hyogo 6691337, Japan
[5] Univ Fukui, Res Ctr Dev Far Infrared Reg, Bunkyo Ku, Fukui 9108507, Japan
来源：
POLYMER | 2021年 / 223卷 / 223期
基金：
日本学术振兴会;
关键词：
Carbon fiber; Polyamide; 6; Interfacial properties; Crystalline structure; Raman spectroscopy; X-RAY-DIFFRACTION; NYLON-6; FILMS; BEHAVIOR; COMPOSITES; TRANSITION; ADHESION; FORM; MORPHOLOGY; VIBRATIONS; BETA;
D O I：
10.1016/j.polymer.2021.123711
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We aim to determine the relationship between the local crystalline structure of polyamide 6 (PA6) within carbon fibers (CFs) and the mechanical properties of unidirectional CF-reinforced PA6 composites. Two types of CFs with different surface profiles (one smooth and one rough), used as reinforcements, were employed for the transverse Charpy impact test of unidirectional PA6/CF composites. The surface profile of CF influenced the impact strength and debonding appearance. The crystalline structure of PA6 within CFs was investigated using micro-Raman spectroscopy with a spatial resolution of 1 ?m. Based on the Raman study, it was suggested that the impact strength and debonding appearance were attributed to the varying polymorphism (?-phase, mesomorphic ?-phase, and ?-phase crystal) of the PA6 matrix between the interface and locations away from the interface (i.e., the bulk region), depending on the surface profiles of CF.
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页数：10
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