预处理结合纤维素酶处理对醋酯纤维降解的研究  

Study on the Degradation of Cellulose Acetate Fibers Pretreatment and Cellulase Treatment

作　　者：郁魏魏[1] 范雪荣[1] 王强[1] 陈昀 曹建华 叶若铭[1] 刘喆[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122 [2]南通醋酸纤维有限公司,江苏南通226008

出　　处：《合成纤维》2011年第2期27-31,共5页Synthetic Fiber in China

基　　金：国家"863"项目(项目编号2009AA02Z204);江苏省高等学校优秀科技创新团队项目(项目编号苏教科2009-10号);江南大学大学生创新训练计划项目(项目编号1009162)

摘　　要：采用纤维素酶降解经氢氧化钠预处理过的醋酯纤维,考察了pH值、温度、酶用量、处理时间以及助剂对酶解效果的影响,并初步探索了超声波对氢氧化钠预处理效果的影响。结果表明,氢氧化钠预处理后,使用纤维素酶降解醋酯纤维的工艺条件为:pH值4.5,温度55℃,酶用量3 mL/L,反应时间4 h;使用超声波辅助氢氧化钠预处理后,醋酯纤维的取代度较单一碱处理略有降低,酶解活性提高;在纤维素酶催化水解反应中,加入非离子表面活性剂可以提高醋酯纤维的酶解效果。In this article,the cellulose acetate fiber was pretreated with sodium hydroxide and the effects of reaction conditions such as pH value,temperature,enzyme dosage,treatment time and surfactant type on the degradation efficiency were determined.In addition,the effect of ultrasound on sodium hydroxide pretreatment was preliminarily studied.The results showed that the optimum conditions for the degradation of NaOH pretreated cellulose acetate fibers were as follows： pH 4.5,enzyme dosage 3 mL/L,treating the fibers at 55 ℃ for 4 h;ultrasound-aided sodium hydroxide pretreatment could lower the degree of substitution and improve the reactivity of cellulase than single alkaline treatment.The addition of non-ionic surfactant could improve the hydrolysis efficiency of celluase to cellulose acetate fibers.

关 键 词：醋酯纤维 碱预处理 纤维素酶 降解 

分 类 号：TQ342.712[化学工程—化纤工业]