A SMALL-ANGLE X-RAY-SCATTERING STUDY OF HIGH-DENSITY POLYETHYLENE AND ULTRAHIGH MOLECULAR-WEIGHT POLYETHYLENE

被引：24

作者：

BELLARE, A ^{[1
]}

SCHNABLEGGER, H ^{[1
]}

COHEN, RE ^{[1
]}

机构：

[1] MIT,DEPT CHEM ENGN,CAMBRIDGE,MA 02139

来源：

MACROMOLECULES | 1995年 / 28卷 / 23期

关键词：

D O I：

10.1021/ma00127a001

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Small-angle X-ray scattering was used to compare the morphology of extruded ultrahigh molecular weight polyethylene (UHMWPE) and melt-crystallized high-density polyethylene (HDPE). The crystalline morphology of UHMWPE has a low degree of order, rendering direct methods of analysis of the scattering curves unsuitable. We have demonstrated that the indirect transformation method, requiring no extrapolation of the scattering curve, can be used to obtain the one-dimensional correlation functions for these dense lamellar systems. The lamellar morphology of UHMWPE contained a large distribution of lamellar thicknesses, diffuse interfaces, and a large variation of interlamellar spacing as compared to those features in HDPE. The interlamellar spacing of extruded UHMWPE determined from the one-dimensional correlation function was 50 nm and that of melt-crystallized HDPE was 26 nm. The amorphous zone thickness of HDPE was 8 nm.

引用

页码：7585 / 7588

页数：4

共 11 条

[1]

BALTACALLEJA FJ, 1989, XRAY SCATTERING SYNT, P282

[2] MORPHOLOGICAL ALTERATIONS DURING TEXTURE-PRODUCING PLASTIC PLANE-STRAIN COMPRESSION OF HIGH-DENSITY POLYETHYLENE [J].