SPECTROSCOPIC STUDY OF ALPHA-PHASE AND BETA-PHASE ISOTACTIC POLYPROPYLENE AND OF ATACTIC POLYPROPYLENE IN SOLUTION

被引：9

作者：

MERAJVER, SD

WUNDER, SL

WALLACE, W

机构：

[1] UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109

[2] POLYTECH INST NEW YORK,DEPT CHEM,BROOKLYN,NY 11201

[3] DUPONT CO,DEPT TEXT FIBERS,EXPTL STN,WILMINGTON,DE 19898

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1985年 / 23卷 / 10期

关键词：

CRYSTALS - Structure - POLYMERS - Molecular Structure - SPECTROSCOPY; RAMAN;

D O I：

10.1002/pol.1985.180231006

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Raman spectroscopy is used to investigate the conformation and packing of isotactic crystalline alpha -phase polypropylene compared with lower-order beta -phase isotactic polypropylene and to study the solution behavior of atactic polypropylene. The high-frequency region of the spectrum is analyzed in light of a normal-mode calculation that takes into account the methyl-group vibrations. Differences in the thermal behavior between the two solid isotactic polypropylene samples are explained in terms of packing defects which exist in the beta -phase form.

引用

页码：2043 / 2057

页数：15