可生物降解的纳米CaCO_(3)/BF/PHA/PE复合材料的制备及性能  

Preparation and Properties of Biodegradable Nano-CaCO_(3)/BF/PHA/PE Composites

作　　者：吴静 黄嘉园 蓝峻峰 陈燕萌 叶有明 韦周巧 WU Jing;HUANG Jia-yuan;LAN Jun-feng;CHEN Yan-meng;YE You-ming;WEI Zhou-qiao(Inorganic Green Materials Key Laboratory,School of Food and Biochemical Engineering,Guangxi Science&Technology Normal University,Laibin 546100,China)

机构地区：[1]广西科技师范学院食品与生化工程学院无机绿色材料重点实验室,广西来宾546100

出　　处：《塑料科技》2024年第7期121-124,共4页Plastics Science and Technology

基　　金：广西科技计划项目(桂科AD20297139);来宾市科学研究与技术开发计划项目(来科攻202403);来宾市科学研究与技术开发计划项目(来科转220904)。

摘　　要：研究以聚乙烯(PE)为原料,聚羟基脂肪酸酯(PHA)、改性后的纳米CaCO_(3)和甘蔗渣纤维(BF)为复合填料,通过熔融挤压和注塑成型制备纳米CaCO_(3)/BF/PHA/PE复合材料。通过力学性能测试、傅里叶变换红外光谱(FTIR)分析、热重(TG)分析、扫描电子显微镜(SEM)等表征方法,考察PHA含量、改性纳米CaCO_(3)及BF的最佳配比及其含量对复合材料内部结构和性能的影响。结果表明:5%PHA、5%BF以及5%纳米CaCO_(3)时,复合材料的力学性能最佳,达到12.9 MPa;在此配比下,纳米CaCO_(3)/BF/PHA/PE复合材料的最大热分解温度达到463℃,高于改性前复合材料热分解温度(453℃)。研究为可降解高分子材料的绿色发展提供了思路。In this study,polyethylene(PE) was used as the raw material,and polyhydroxyalkanoate(PHA),modified nano-CaCO_(3) and bagasse fiber(BF) were used as the composite fillers,and the nano-CaCO_(3)/BF/PHA/PE composites were prepared by melt extrusion and injection molding.The effects of the optimal ratios of PHA,modified nano-CaCO_(3) and BF and their contents on the internal structure and properties of the composites were investigated by mechanical property tests,Fourier transform infrared spectroscopy(FTIR) analysis,thermogravimetric(TG) analysis,scanning electron microscopy(SEM) and other characterization methods.The results show that with 5% PHA,5% BF,and 5% nano-CaCO_(3),the mechanical properties of the composites were optimal at 12.9 MPa,and the maximum thermal decomposition temperature of the nano-CaCO_(3)/BF/PHA/PE composites reached 437 ℃ at this ratio,which was higher than the thermal decomposition temperature(453 ℃) of the composites before modification.The study provides ideas for the green development of degradable polymer materials.

关 键 词：复合材料 聚羟基脂肪酸酯 纳米碳酸钙 甘蔗渣纤维 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.12[化学工程—合成树脂塑料工业]