中国食品添加剂Issue(3)：103-109,7.
不同贮藏时间对CMC溶液流变特性的影响研究
Studies on effect of different storage time on rheological properties of CMC solution
摘要
Abstract
CMC is one of the cellulose derivatives with unique effects of thickening and suspension,as is widely used in food industry.There exists cellulose enzyme which has effects on the rheological properties of CMC solutions.In this paper with advanced rheometer the effect of different storage time of CMC solution on its rehological properties including zero-shearing viscosity,viscosity,viscosity damping and viscous modulus,elastic modulus,tan (delta) is studied in a detailed way through experiments like steady flow,strain sweep and frequency sweep,meanwhile,the mechanism is elaborated from the point of microstructure.The results show that the degradation of CMC occurs duringits storage,which leads to the diminution of density of chain segment same with thechange of molecular weight and attenuates inter molecular force like hydrogen bond making its rheological properties change especially after storage of 4 ～ 5months.Through studying of effect of storagetime on the rheologicalproperties,the reference frame for theapplication on food industry and quality control of CMC is provided to a certain extent.关键词
贮藏时间/CMC溶液/流变特性/影响Key words
storage time / CMC solution / rheological properties / effect分类
轻工纺织引用本文复制引用
吴伟都,潘永明,王雅琼,朱慧,李言郡,施文蓉..不同贮藏时间对CMC溶液流变特性的影响研究[J].中国食品添加剂,2013,(3):103-109,7.基金项目
2011年浙江省公益性技术应用研究(分析测试)资助项目,项目编号:2011C37023. （分析测试）
