Dissolution behaviour and the solution property of cellulose in NaOH/Urea/Thiourea Aqueous Solvent

摘要：

　　Untreated cellulose was directly and quickly dissolved in NaOH/thiourea/urea aqueous solvent at a 9/3/5/83 composition and pre-cooled at (-10 to +2)℃,and at a high shear force with 3500rpm agitating speed.The dissolving process was investigated by polarization microscope,XRD and rheometer.The result revealed that cellulose crystal forms was changed from cellulose Ⅰ to cellulose Ⅱ after dissolving and the crystallinity decreased.Moreover,the gel forming of cellulose has an obvious relationship with cellulose concentration and its easy to form gel when the cellulose concentration was above 8wt%.

关键词： Cellulose swelling and dissolving rheological properties crystallinity gel

作者: Huan Li Haifeng Li Xuan Zhong Magdi E.Gibril Xinda Li Yue Zhang Keqing Han Muhuo Yu

作者单位: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China

会议类型: 国际会议

会议名称: 2012 International Conference on Chemical Engineering,Metallurgical Engineering and Metallic Materials(2012化工、冶金和金属材料国际会议(CMMM2012))

会议地点: 昆明

会议语种:英文

页码: 73-76

在线出版日期: 2012-10-12（万方平台首次上网日期，不代表论文的发表时间）