碱溶性羟乙基纤维素的合成、表征及溶解性能  

Preparation, Characterization and Solubility of Alkali Soluble Hydroxyethyl Cellulose

作　　者：花影[1,2] 李发学[1,2] 胡盼盼[3] 刘兆峰[3] 俞建勇[2,4] 

机构地区：[1]东华大学纺织面料技术教育部重点实验室,上海201620 [2]东华大学纺织学院,上海201620 [3]东华大学材料科学与工程学院,上海201620 [4]东华大学现代纺织研究院,上海201620

出　　处：《东华大学学报（自然科学版）》2012年第4期377-380,429,共5页Journal of Donghua University(Natural Science)

摘　　要：采用环氧乙烷(EO)与原始纤维素的气固相反应,成功制备了具有独特碱溶解性能的低摩尔取代度(MS)羟乙基纤维素(HEC).利用傅里叶变换红外光谱(FT-IR)、核磁共振氢谱(1H-NMR)和X射线衍射分析方法,表征了HEC的微观结构和摩尔取代度,并通过测试HEC的溶解性能,探讨醚化对纤维素溶解性能的影响.结果表明:随EO与原始纤维素质量比的增加,HEC的摩尔取代度增大,结晶度减小,溶解度增大,溶液黏度呈非线性下降.As one of the cellulose derivatives with low molar substitution （MS）, hydroxyethyl cellulose （HEC） which possesses unique property of alkali solubility was synthesized by the gas-solid reaction of raw cellulose and ethylene oxide （EO）. The MS and micromorphology structure of the prepared HEC were characterized by Fourier transform infrared spectroscopy（FT-IR）, 1H NMR and X-ray diffraction techniques. The effects of etherification on the properties of HEC were discussed by dissolution property test. Experimental results showed that with the increase of the mass ratio of EO to raw cellulose the MS of HEC increased, the crystallinity of HEC decreased and the solubility increased, while the viscosity of the solution declined nonlinearly.

关 键 词：羟乙基纤维素 醚化反应 微观结构分析 溶解度 黏度 

分 类 号：TQ341[化学工程—化纤工业]