尿素/己内酰胺/氢氧化钠/水溶剂体系对纤维素的溶解和再生性能  

Dissolubility of the Cellulose in Urea/Caprolactam/NaOH/Aqueous Solution and the Performance of Regenerated Cellulose

作　　者：赵地顺[1] 李贺[1] 刘猛帅[1] 付林林[1] 张娟[1] 

机构地区：[1]河北科技大学化学与制药工程学院,石家庄050018

出　　处：《高等学校化学学报》2011年第7期1629-1633,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20976107)资助

摘　　要：探讨了尿素/己内酰胺/氢氧化钠/水溶剂体系对纤维素的溶解和再生情况.利用正交试验确定了该体系各组分的最佳组成(质量分数):尿素10%,己内酰胺4%,氢氧化钠8%.采用红外光谱(FTIR)、热重失重(TGA)分析和X射线衍射(XRD)等手段对再生前后的纤维素进行了表征.结果表明,该溶剂体系对纤维素具有良好的溶解性能,并且是纤维素的直接溶剂;低温有利于纤维素的溶解;溶解再生后的纤维素晶型发生了变化,热稳定性有所降低.Dissolution of cellulose in urea/caprolactam/NaOH/aqueous and the performance of regenerated cellulose were discussed.The best ratio（mass fraction） of urea/caprolactam/NaOH in solution was found by orthogonal design： urea 10%,caprolactam 4%,NaOH 8%.Both the original cellulose and regenerated cellulose from urea/caprolactam/NaOH/aqueous were characterized by Fourier transform infrared spectroscopy（FTIR）,thermogravimetry analysis（TGA） and X-ray diffraction（XRD） measurements.The results show that the novel system was a good direct cellulose solvent.The solubility of cellulose in urea/caprolactam/NaOH/aqueous was better at lower temperature.The crystal of regenerated cellulose changed and the thermostability of regenerated cellulose slightly decreased.

关 键 词：尿素/己内酰胺/氢氧化钠 纤维素 溶解性能 

分 类 号：O631.1[理学—高分子化学]