杂化纳米HNTs-d-RGO/聚乳酸复合材料的制备及热性能  

Preparation and Thermal Properties of Hybrid Halloysite Nanotubes-d-Graphene Oxide/Polylactic Acid Composites

作　　者：贾仕奎[1] 王忠[1] 朱艳[1] 陈立贵[1] 付蕾[1] 梁文俊 Shikui Jia;Yan Zhu;Ligui Chen;Lei Fu;Wenjun Liang(School of Materials Science and Engineering,Shaanxi University of Technology,Hanzhong 723000,China)

机构地区：[1]陕西理工大学材料科学与工程学院

出　　处：《高分子材料科学与工程》2019年第5期136-142,共7页Polymer Materials Science & Engineering

基　　金：陕西省自然科学基础研究计划(2017JQ5071);中国博士后科学基金资助项目(2016M600787)

摘　　要：以埃洛石纳米管(HNTs)和氧化石墨烯(GO)为增强填料,聚乳酸(PLA)为基体,利用硅烷偶联剂KH550(APTES)将HNTs与GO杂化获得HNTs-d-RGO纳米粒子,再通过熔融挤出热拉-骤冷工艺制备了一系列纳米HNTs-d-RGO/PLA复合材料。分别采用透射电镜、红外光谱、扫描电镜、X射线衍射、差示扫描量热分析和维卡软化仪研究了纳米HNTs-d-RGO/PLA复合材料的微观形态、结晶性能与热性能。结果表明,与GO的结晶衍射峰相比,杂化HNTs-d-RGO相应的特征衍射峰强度明显减弱;与纯PLA相比,当HNTs-d-RGO含量达到5%时,其结晶度和耐热变形温度较纯PLA分别提高了19.3%和54.3℃,当HNTs-d-RGO含量达到7%后,纳米HNTs-d-RGO/PLA复合材料团聚现象明显,而相应的结晶度和耐热变形温度出现了一定程度的下降。The halloysite nanotubes(HNTs)and graphene oxide(GO)were hybridized with silane coupling agent KH550(APTES).A series of hybrid HNTs-d-RGO/polylactic acid(PLA)composites were melt-compounded by twin-screw extruder with PLA as raw material,HNTs-d-RGO as reinforcing filler.The microstructures,crystallization and thermal properties of HNTs-d-RGO/PLA composites were investigated by TEM,FT-IR,SEM,WAXD,DSC and Vicat softening apparatus.The results show that the intensity of the characteristic diffraction peaks of HNTs-d-RGO is obviously weakened compared with of the GO.When the content of HNTs-d-RGO is 5%,the crystallinity and heat distortion temperature of the hybrid HNTs-d-RGO/PLA composites are increased by 19.3%and 54.3℃,respectively.While the HNTs-d-RGO content reaches 7%,the agglomeration of HNTs-d-RGO/PLA composites becomes obvious,and the corresponding crystallinity and heat-resisting deformation temperature clearly decrease.

关 键 词：埃洛石纳米管 氧化石墨烯 聚乳酸 复合材料 杂化 热性能 

分 类 号：TB383[一般工业技术—材料科学与工程]