Secondary chain motion and mechanical properties of -irradiated-regenerated cellulose films

被引：6

作者：

Tanvir, Aisha ^{[1
]}

Al-Maadeed, Mariam A. ^{[1
]}

Hassan, Mohammad K. ^{[1
]}

机构：

[1] Qatar Univ, Ctr Adv Mat, POB 2713, Doha, Qatar

来源：

STARCH-STARKE | 2017年 / 69卷 / 1-2期

关键词：

-radiation; Dielectric spectroscopy; Mechanical properties; Regenerated cellulose; Secondary chain motion; DIELECTRIC SPECTROSCOPIC CHARACTERIZATION; GAMMA-IRRADIATION; RADIATION; LINTERS; RELAXATION;

D O I：

10.1002/star.201500329

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Regenerated cellulose films prepared using NaOH/urea solvent system were exposed to different doses of -radiation, ranging from 5 to 50kGy to modify their properties. Change in relative crystallinity as a function of absorbed dose was studied using XRD. The tensile and dynamic mechanical properties were tested and it was found that exposure to 10kGy imparted maximum improvement in these properties, that is 10% improvement in tensile strength, 43% increase in Young's modulus, and 22% increase in storage modulus. Broadband dielectric spectroscopy technique was used to investigate effect of absorbed dose on the secondary chain motions of the regenerated cellulose and the results were in line with findings of the tensile and dynamic mechanical tests.

引用

页数：8

共 40 条

[11] Broadband dielectric spectroscopic characterization of the hydrolytic degradation of carboxylic acid-terminated poly(D,L-lactide) materials [J].