微波协同氧化钙处理对植物纤维失水率与可及度的影响研究  

Influences of Synergistic Pretreatment with Microwave and Calcium Oxide on Water Loss Rate and Accessibility of Plant Fibers

作　　者：陈潇川[1] 刘敏毅[1,2] 肖荔人[1] 陈荣国[1,2] 陈庆华[1] 

机构地区：[1]福建师范大学,福州350108 [2]福建工程学院,福州350108

出　　处：《材料工程》2012年第5期81-86,共6页Journal of Materials Engineering

基　　金：福建省自然科学基金项目(2011J01287);福建省重大专项专题项目(2007HZ0001-1)

摘　　要：采用氧化钙高速捏合处理,再辅以微波辐射协同处理桐壳纤维和水葫芦纤维,以期使它们适用于制备木塑复合材料。通过失水率、保水值和红外光谱测试,研究了处理条件对这两种植物纤维的失水率和可及度的影响,重点讨论了保水值、分子间氢键百分含量和红外结晶指数等可及度参数的变化规律,并简要探讨了植物纤维的脱水机理。结果表明:微波协同氧化钙处理可延缓植物纤维的失水性和降低植物纤维的失水率,归因于经处理后植物纤维的可及度被提高。Two plant fibers, i.e. hell tong fiber and water hyacinth fiber, were sequentially pretreated by high-speed kneading with calcium oxide and microwave radiating to help them to be applicable to wood plastic composites （WPC）. The influences of synergistic pretreatment condition of microwave and calcium oxide on the water loss rate and the accessibility of plant fibers were studied by investigating and analyzing the water loss rate, the water retention value and IR spectra of plant fibers. The variational rule of the change of accessibility along with the change of microwave irradiation time was mainly discussed for the two plant fibers. Moreover, a possible dehydration mechanism was proposed to the plant fibers that were synergistically pretreated with calcium oxide and microwave. The results show that synergistic pretreatment with microwave and calcium oxide can notablely postpone the dehydration of plant fibers and decrease their water loss rate as their accessibility is improved after the pretreatment.

关 键 词：可及度 含水率 桐壳纤维 水葫芦纤维 氧化钙处理 微波处理 

分 类 号：TQ322.42[化学工程—合成树脂塑料工业]