ACCELERATED AGING OF PAPERS OF PURE CELLULOSE - MECHANISM OF CELLULOSE DEGRADATION AND PAPER EMBRITTLEMENT

被引：162

作者：

ZOU, X

GURNAGUL, N

UESAKA, T

BOUCHARD, J

机构：

[1] Pulp and Paper Research Institute of Canada, Pointe Claire, Qúebec H9R 3J9

来源：

POLYMER DEGRADATION AND STABILITY | 1994年 / 43卷 / 03期

关键词：

D O I：

10.1016/0141-3910(94)90011-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Accelerated aging of papers of pure cellulose with low initial pH and degree of polymerization results in a significant loss of paper strength. Analysis of sheet properties indicates that the loss of paper strength and embrittlement are mainly a result of a decrease in fibre strength. The loss of fibre strength is, in turn, due to depolymerization of the cellulose caused by acid-catalysed hydrolysis. Molecular weight distributions obtained by size exclusion chromatography show that the depolymerization of cellulose during accelerated aging proceeds in a random fashion. A new parameter based on the stress-stain relationship is introduced to characterize the paper embrittlement during aging.

引用

页码：393 / 402

页数：10