Small-angle X-ray scattering on the ChemMatCARS beamline at the Advanced Photon Source: a study of shear-induced crystallization in polypropylene

被引：7

作者：

Sutton, D ^{[1
]}

Hanley, T

Knott, R

Cookson, D

机构：

[1] Australian Nucl Sci & Technol Org, Bragg Inst, Menai, NSW 2234, Australia

[2] Univ New S Wales, Sch Chem Engn & Ind Chem, Kensington, NSW 2033, Australia

[3] CRC Polymers, Clayton, Vic, Australia

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2004年 / 11卷

关键词：

SAXS; ChemMatCARS; polypropylene; crystallization; shear;

D O I：

10.1107/S0909049504022873

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The first ever time-resolved small-angle X-ray scattering (SAXS) data from the undulator 15-ID-D beamline (ChemMatCARS) are presented. A 1.3 Angstrom (9.54 keV) X-ray beam was selected to study the structure development in a polypropylene sample during shear-induced crystallization. A Linkam CSS450 shear cell provided the temperature and shear control. The polypropylene was first melted and then quenched to the crystallization temperature, where a step shear was applied. The SAXS data were collected using a Bruker 6000 CCD detector, which provided images of excellent resolution. The SAXS images (with 180degrees rotational symmetry) indicated that the polypropylene crystallizes with a high degree of anisotropy, and the lamellae are oriented perpendicular to the flow direction.

引用

页码：505 / 507

页数：3

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