Rheological, Thermal and Mechanical Properties of Biodegradable Poly(propylene carbonate)/Polylactide/Poly(1,2-propylene glycol adipate) Blown Films  

作　　者：Yan-ping Hao Hui-li Yang Gui-bao Zhang 张会良 Ge Gao Li-song Dong 

机构地区：[1]College of Chemistry, Jilin University [2]Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry

出　　处：《Chinese Journal of Polymer Science》2015年第12期1702-1712,共11页高分子科学（英文版）

基　　金：financially supported by the fund of Science&Technology Bureau of Jilin Province of China(No.20130305028NY);Chinese Science Academy(Changchun Branch)(No.2014SYHZ0019);the National High Technology Research and Development Program of China(863 Program)(No.2012AA062904);the National Natural Science Foundation of China(No.51021003)

摘　　要：Poly（propylene carbonate） （PPC） was blended with polylactide （PLA） and poly（1,2-propylene glycol adipate） （PPA） using a twin screw extruder. Then the PPC/PLA/PPA films were prepared using the blown film technique. DMA results showed that PPA could act as a plasticizer and improve the miscibility between PPC and PLA. Crystal morphology displayed that blending PLA with the amorphous PPC led to a decrease of the spherulite size of PLA. The results of mechanical tests indicated that PPC-rich films showed high elongation at break and PLA-rich films showed high tear strength and good optical properties. The content of PPC and PLA significantly affected the physical properties of the films. With increasing PPC content, the melt strengths of the PPC/PLA/PPA films were enhanced. These findings contributed to the biodegradable materials application for designing and manufacturing polymer packaging.Poly（propylene carbonate） （PPC） was blended with polylactide （PLA） and poly（1,2-propylene glycol adipate） （PPA） using a twin screw extruder. Then the PPC/PLA/PPA films were prepared using the blown film technique. DMA results showed that PPA could act as a plasticizer and improve the miscibility between PPC and PLA. Crystal morphology displayed that blending PLA with the amorphous PPC led to a decrease of the spherulite size of PLA. The results of mechanical tests indicated that PPC-rich films showed high elongation at break and PLA-rich films showed high tear strength and good optical properties. The content of PPC and PLA significantly affected the physical properties of the films. With increasing PPC content, the melt strengths of the PPC/PLA/PPA films were enhanced. These findings contributed to the biodegradable materials application for designing and manufacturing polymer packaging.

关 键 词：Poly（propylene carbonate） POLYLACTIDE PLASTICIZER Blown films. 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TQ317[化学工程—高聚物工业]