CELLULOSE POLYVINYL-ALCOHOL) BLENDS PREPARED FROM SOLUTIONS IN N,N-DIMETHYLACETAMIDE LITHIUM-CHLORIDE

被引：285

作者：

NISHIO, Y

MANLEY, RS

机构：

[1] PULP & PAPER RES INST CANADA,3420 UNIV,MONTREAL H3A 2A7,QUEBEC,CANADA

[2] MCGILL UNIV,DEPT CHEM,MONTREAL H3A 2A7,QUEBEC,CANADA

来源：

MACROMOLECULES | 1988年 / 21卷 / 05期

关键词：

CALORIMETRY - CHEMICAL OPERATIONS - Coagulation - LITHIUM COMPOUNDS - POLYVINYL ALCOHOL - Blending;

D O I：

10.1021/ma00183a016

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Blend films of cellulose with poly(vinyl alcohol) (PVA) were prepared from mixed solutions in N,N-dimethylacetamide (DMAc)-lithium chloride (LiCl) by coagulation in a nonsolvent. The state of miscibility of the clear films obtained over the entire composition range was characterized by wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), and dynamic mechanical measurements. The WAXD and DSC results indicate that the crystallinity of PVA decreased drastically with increasing cellulose content and it exhibited no tendency to crystallize in the blends containing more than 70 wt% cellulose.

引用

页码：1270 / 1277

页数：8

共 41 条

[1] MISCIBLE BLENDS PREPARED FROM 2 CRYSTALLINE POLYMERS [J].