Characterization of structural knot distributions in UHMWPE fibers

被引：8

作者：

Xu, Hao-jun ^{[1
]}

An, Min-fang ^{[1
]}

Lv, You ^{[1
]}

Wang, Zong-bao ^{[1
]}

Gu, Qun ^{[2
]}

机构：

[1] Ningbo Univ, Fac Mat Sci & Chem Engn, Ningbo Key Lab Specialty Polymers, Ningbo 315211, Zhejiang, Peoples R China

[2] Ningbo Univ Technol, Coll Mat Engn, Ningbo 315211, Zhejiang, Peoples R China

来源：

CHINESE JOURNAL OF POLYMER SCIENCE | 2016年 / 34卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Microbeam X-ray diffraction; UHMWPE fiber; Branched chain; Structural knot; Orientation distribution; X-RAY; MICRODIFFRACTION EXPERIMENTS; LONGITUDINAL GROWTH; FLOWING SOLUTIONS; POLYMER CRYSTALS; SINGLE FIBERS; GEL-SPUN; DIFFRACTION; MICROSTRUCTURE; DISTORTIONS;

D O I：

10.1007/s10118-016-1774-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Microbeam wide-angle X-ray diffraction (WAXD) experiments were carried out at different structural knot positions of SIOC and M4 fibers of ultra-high molecular weight polyethylene (UHMWPE). The optical microscope images revealed that SIOC fiber had bamboo-like structural knots, and M4 fiber had chaotic distribution of structural knots. WAXD patterns showed the monoclinic unit cell in the whole M4 fiber, but different lamellar orientations in the bamboo joint of SIOC fiber. In addition, small-angle X-ray scattering (SAXS) patterns confirmed that the SIOC fiber contained uniform distribution of shish structures, and differential scanning calorimetry (DSC) measurements showed that its less branched and short chains benefited the orthorhombic-hexagonal phase transformation.

引用

页码：606 / 615

页数：10

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