Citation: Yan-ping Hao, Hui-li Yang, Gui-bao Zhang, Hui-liang Zhang, Ge Gao, Li-song Dong. Rheological, Thermal and Mechanical Properties of Biodegradable Poly(propylene carbonate)/Polylactide/Poly(1,2-propylene glycol adipate) Blown Films[J]. Chinese Journal of Polymer Science, ;2015, 33(12): 1702-1712. doi: 10.1007/s10118-015-1714-z shu

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

Yan-ping Hao ^1,2,3 ,
Hui-li Yang ⁴ ,
Gui-bao Zhang ⁴ ,
Hui-liang Zhang ^4,, ,
Ge Gao ⁵ ,
Li-song Dong ⁴

1.
1. College of Chemistry, Jilin University, Changchun 130012, China
2.
2. Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China
3.
4.
Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China
5.
College of Chemistry, Jilin University, Changchun 130012, China

Corresponding author: Hui-liang Zhang,
Received Date: 18 May 2015
Revised Date: 3 June 2015

Fund Project: This work was 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) and the National Natural Science Foundation of China(No.51021003).

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),
- Polylactide,
- Plasticizer,
- Blown films
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