MOF-199改性聚乳酸复合材料的制备及热力学性能  

Preparation and Thermodynamic Properties of PLA Composite Incorporated with MOF-199

作　　者：王保营 王超群 李璐瑶 向华[2] 张岩[1] 魏庆葆[1] WANG Baoying;WANG Chaoqun;LI Luyao;XIANG Hua;ZHANG Yan;WEI Qingbao(Henan University of Animal Husbandry and Economy,Zhengzhou,Henan 450046,China;Guangdong Industry of Polytechnic,Guangzhou,Guangdong 510300,China)

机构地区：[1]河南牧业经济学院,河南郑州450046 [2]广东轻工职业技术学院,广东广州510300

出　　处：《塑料》2019年第5期39-42,共4页Plastics

基　　金：河南牧业经济学院科研创新基金(XKYCXJJ2017011);河南省高等学校重点科研项目(19A430016)

摘　　要：以聚乳酸(PLA)为基材,配位聚合物MOF-199为改性剂,采用溶液流延的方式制备了不同MOF-199含量的改性PLA复合材料,通过扫描电子显微镜(SEM)、衰减全反射傅立叶变换红外光谱(ATR-IR)研究了复合材料的形貌和结构,通过热重(TG)、差示扫描量热(DSC)等方式研究了复合材料的热力学性能。结果表明,与纯PLA相比,MOF-199的加入可显著提高PLA复合材料的起始热分解温度,拓宽了PLA复合材料的热加工温度范围,复合材料的玻璃化转变温度、熔融温度和结晶度随MOF-199含量的增加呈现先升高后降低的变化趋势,而冷结晶温度逐渐降低,当M0F499的含量为3%时,复合材料的综合性能最佳,起始热分解温度提高了约36.9℃,结晶度提高了约139%。Poly (lactic acid)(PLA) based composite with coordination polymer MOF-199 as modifier was prepared by solution casting method.The surface morphology,structure and thermodynamic properties of the composite were studied by scanning electron microscope (SEM),attenuated total reflection infrared spectrum (ATR - IR),thermogravimetry (TG) and differential scanning calorimetry (DSC).The results showed that incorporation of MOF-199 could significantly enhance the initial decomposition temperature,thus the thermal processing temperature range of PLA composite was widened.Also with the increase of MOF-199 content,the glass transition temperature,melting temperature and crystallinity of the composite first increased and then decreased,while the cold crystallization temperature decreased monotonously.The composite containing 3% MOF-199 content presented the best compromised properties,the initial decomposition temperature and crystallinity increased by about 36.9℃ and 139%,compared with PLA.

关 键 词：配位聚合物 聚乳酸 复合材料 热力学性能 结晶性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]