Cellulose Chemistry and Technology

Title
Non-linear viscoelastic behavior of novel regenerated cellulose fiber in dry and wet condition
Authors
SHUAI ZHANG WEN-CONG WANG FA-XUE LI and JIAN-YONG YU

Received July 8, 2012
Published Volume 47 Issue 5-6 May-June
Keywords non-linear, viscoelastic, cellulose fiber, orientation, wet condition

Abstract
Viscoelastic models were employed to analyze the mechanical properties of novel regenerated cellulose fiber from NaOH complex solution. The stress-strain curves of the dry and wet fiber were fitted. The models were composed of a Maxwell element, linear spring and non-linear spring. The tested results indicate that the regenerated cellulose fibers exhibit better tensile properties in dry and wet condition than those of viscose rayon. It can be explained by the high molecular weight of novel regenerated cellulose fiber (~1.1×105 ), compared to that of viscose rayon (~5×104 ), as well as high degree of crystallinity (60~65% to 30~40%).