PBSA-g-MG增容改性热塑性淀粉/PBSA复合材料  

Thermoplastic Starch/PBSA Composite Compatibilized and Modified by PBSA-g-MG

作　　者：王培磊 孟伟 陈芳萍[1] 刘昌胜[1] WANG Pei-lei;MENG Wei;CHEN Fang-ping;LIU Chang-sheng(School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学材料科学与工程学院,上海200237

出　　处：《功能高分子学报》2018年第1期63-68,共6页Journal of Functional Polymers

基　　金：国家十二五科技支撑项目(2012BAD32B00)

摘　　要：以过氧化二异丙苯(DCP)为引发剂,通过熔融接枝将马来酸酐(MA)和甲基丙烯酸缩水甘油酯(GMA)接枝到PBSA(聚丁二酸/聚己二酸-co-丁二醇酯)分子链上,制备了PBSA-g-MG增容剂。采用红外光谱和核磁共振氢谱对增容剂的化学结构进行表征,并探究了PBSA-g-MG的添加量对热塑性淀粉(TPS)与PBSA复合材料(TPS/PBSA)的力学性能、微观形貌、动态热机械性能和吸水性能的影响。结果表明,该增容剂可改善纤维增强的TPS/PBSA复合材料的界面相容性,TPS相与PBSA相的T_g相互靠近,TPS/PBSA的力学性能和耐水性提高。添加质量分数8%增容剂的TPS/PBSA复合材料在59%湿度下的力学强度可达19.4 MPa,比未增容的复合材料提高了将近130%。Maleic anhydride(MA)and glycidyl methacrylate(GMA)were grafted onto poly(butylene succinate-co-butylene adipate)(PBSA)molecular chains in the melt state by using dicumyl peroxide(DCP)as an initiator.Compatibilizer marked PBSA-g-MG was successfully prepared.The chemical structure of the compatibilizer was characterized by FT-IR and 1H-NMR.The effect of PBSA-g-MG dosage on mechanical properties,microstructure,dynamic mechanical properties and water absorption of fiber-reinforced thermoplastic starch(TPS)/PBSA composites were also studied.The results showed that PBSA-g-MG improved the interface compatibility of TPS/PBSA composite,and made T g of TPS phase and that of PBSA phase close to each other.The mechanical strength and water resistance of TPS/PBSA also improved due to the introduction of PBSA-g-MG.The mechanical strength of TPS/PBSA composite with 8%mass fraction compatibilizer reached 19.4 MPa at 59%relative humidity,which was nearly 130%higher than that of non-compatibilized composites.

关 键 词：塑性淀粉 PBSA 复合材料 相容性 力学强度 

分 类 号：TQ321[化学工程—合成树脂塑料工业]