黄麻纤维的碱处理对淀粉/LDPE/黄麻纤维复合材料性能的影响  

Effect of the Pretreatment of Jute Fiber With Sodium Hydroxide on Properties of Starch/LDPE/Jute Fiber Composite

作　　者：周双[1] 杨雨[1] 田雅娟[1] 

机构地区：[1]沈阳化工大学,辽宁沈阳110142

出　　处：《辽宁化工》2013年第7期751-753,799,共4页Liaoning Chemical Industry

摘　　要：以玉米淀粉(S),低密度聚乙烯(LDPE)为主要原料,黄麻纤维(F)为增强材料,利用转矩流变仪制备了淀粉/LDPE/黄麻纤维复合材料(S/LDPE/F)。用NaOH溶液对黄麻纤维进行了预处理,探讨了黄麻纤维经不同浓度的NaOH溶液,在不同的温度及浸泡时间下对S/LDPE/F复合材料抗拉强度和耐水性的影响,结果表明用1 mol/L NaOH溶液浸泡黄麻纤维48 h制备的复合材料的力学性能提高了40.8%(抗拉强度由10.21 MPa增加到14.38 MPa),耐水性能有所改善,耐热性能有所提高(维卡软化温度由97.5℃提高101.3℃)。Starch/LDPE /jute fiber composite was prepared in a torque rheometer by using corn starch,LDPE and jute fiber as raw material.Jute fibers were pretreated by sodium hydroxide solution.The effect of the concentration of NaOH,soaking temperature and soaking time on the mechanical properties,thermal properties and water resistance of the composite was studied.The results show that the tensile strength of the composite with jute fiber soaked in 1 mol/L NaOH solution for 48 h can reach to 14.38 MPa,while the tensile strength of the composite with untreated jute fiber is 10.21 MPa.Compared with composites prepared with untreated fiber,the water resistant and heat resistant properties of composites prepared with pretreated jute fiber can be also improved.

关 键 词：淀粉 低密度聚乙烯 黄麻纤维 拉伸性能 耐水性能 耐热性能 

分 类 号：TQ320[化学工程—合成树脂塑料工业]