纤维填充量对菠萝叶纤维/热塑性淀粉复合材料性能的影响  

Effect of fiber fillings on properties of pineapple leaf fiber/thermoplastic starch composite

作　　者：刘雅奇 刘运浩 李普旺 王超 宋书会 何祖宇 周闯 杨子明 LIU Ya-qi;LIU Yun-hao;LI Pu-wang;WANG Chao;SONG Shu-hui;HE Zu-yu;ZHOU Chuang;YANG Zi-ming(South Subtropical Crop Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524091,China;College of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]中国热带农业科学院南亚热带作物研究所,广东湛江524091 [2]华中农业大学食品科技学院,湖北武汉430070

出　　处：《应用化工》2022年第8期2275-2278,2284,共5页Applied Chemical Industry

基　　金：海南省自然科学基金项目资助(321QN0922);中国热带农业科学院基本科研业务费专项资金(1630062021005)。

摘　　要：以热塑性双醛淀粉为基体,菠萝叶纤维为增强材料,采用热压成型的方法制备菠萝叶纤维/热塑性淀粉复合材料,研究了不同填充量的菠萝叶纤维对复合材料的力学、理化及降解性能的影响。研究结果表明,当菠萝叶纤维填充量为15%,复合材料的拉伸性能最佳,拉伸强度和断裂伸长率分别为7.4 MPa,1.25%;菠萝叶纤维填充量为20%时的弯曲强度和弯曲模量分别为13.18,2245.54 MPa。随着纤维填充量的增加,复合材料的密度逐渐减少、含水率逐渐增加、降解失重率逐渐增加。Taking thermoplastic dialdehyde starch as the matrix,pineapple leaf fiber as the reinforcing material,the pineapple leaf fiber/thermoplastic starch composite was prepared by hot pressing.The effects of the fillings of pineapple leaf fiber on the mechanical,physicochemical and degradation properties of the composite were studied.The results show that when the fillings of pineapple leaf fiber is 15%,the tensile properties of the composite is the best,and the tensile strength and elongation at break are 7.4 MPa and 1.25%.The flexural strength and flexural modulus were 13.18 MPa and 2245.54 MPa respectively when the fillings of pineapple leaf fiber was 20%.With the increase of fiber filling,the density of composite gradually decreases,moisture content and degradation rate of the composite gradually increased.

关 键 词：菠萝叶纤维 双醛淀粉 复合材料 力学性能 降解性能 

分 类 号：TQ321.2[化学工程—合成树脂塑料工业]