【作者】 姚理荣；

【导师】 陈宇岳；

【作者基本信息】 苏州大学 ， 纺织工程， 2007， 硕士

【摘要】 本论文采用高碘酸钠溶液将棉纤维选择性氧化成二醛纤维素，再用丝素蛋白和胶原蛋白溶液对氧化棉纤维进行处理。研究了氧化棉纤维经丝素蛋白和胶原蛋白溶液处理前后的重量变化情况、纤维形态及聚集态结构，以及棉布的抗皱性能等。研究结果表明：高碘酸根离子将纤维素葡萄糖环C₂、C₃位上的两个仲羟基选择性氧化成二醛，氧化的同时伴随“剥皮”反应、β-烷基消除反应以及纤维素大分子链断裂等酸、碱降解反应。氧化过程中，氧化剂浓度、氧化时间和氧化温度等条件是影响氧化程度的主要因素。随着氧化程度的加深，棉纤维失重率不断增大，纤维表面剥损条痕逐渐加深；低浓度氧化棉纤维的结晶度提高，氧化剂浓度超过一定值后氧化棉纤维的结晶度不断降低；氧化棉纱线断裂强度逐渐降低，断裂伸长率先降低后升高，深度氧化后棉纤维收缩并产生弹性；氧化棉纤维的热力学性能不断降低。氧化棉纤维经丝素蛋白和胶原蛋白溶液处理后，蛋白质与氧化棉纤维之间形成亚胺共价结合；经蛋白质溶液处理后，低浓度（1.5g／L NaIO₄）氧化棉纤维的结晶度变化不大，高浓度（21.4g／L NaIO₄）氧化棉纤维的结晶度有所提高；同时，氧化棉纤维的热稳定性有所提高；氧化棉制品的力学性能变化不大；蛋白质溶液处理后，棉布的折皱回复性能明显提高。更多还原

【Abstract】 The periodate sodium was used to selectively oxidize cotton fiber to the dialcellulose in the present dissertation, and then oxidized fibers were treated by SF andcollagen protein solution in the present dissertation. The weight change of oxidizedfiber treated by SF and collagen protein solution, morphology of the cotton fiber,aggregation structure, and mechanical performance of cotton yarn and fabric, as wellas cotton fabric anti-wrinkle performance have studied in this dissertation.The findings indicated that, the periodic acid root ion selectively oxidized the twocellulose hydroxyl in the position glucose’s C₂、C₃ to dial aldehyde, followed"decorticate" response, beta-alkoxy fragmentation as well as cellulosemacro-molecule chain break in acid or alkali solution. In the oxidation process, theprimary factors of oxidized degree were oxidant concentration, oxidized time andoxidized temperature. Along with oxidized degree deepening, weightlessness rate ofcotton yarn and cotton fabric increased; the oxidized fiber’s surface striationsgradually deepened; the crystallinity of oxidised cellulose increased when treated inlow oxidant concentration, after the concentration the crystallinity unceasingly toreduce; the oxidized cotton yarn and fabric breaking strength gradually reduced, afterdeep oxidization breaking elongation rate of cotton yarn increased; Thethermodynamics performance of oxidized cotton fiber unceasingly reduced.After treated with SF and collogen protein solution, imine covalence formedbetween aldehyde group and amido; low concentration （1.5g/L NaIO₄） oxidizedcotton fiber crystallinity changed little, the high concentration（21.4g/L NaIO₄） cottonfiber crystallinity enhanced; the oxidized cotton fiber’s thermodynamics performanceincreased; the oxidized cotton yarn and the cotton fabric mechanics performancechange little; the cotton fabric wrinkles performance increased obviously.更多还原