Citation: BIAN Junjia, XU Mingzhi, HAN Changyu, WU Dandan, HAN Lijing, DONG Lisong. Poly(propylene carbonate)/Starch Blends Prepared by Water-assisted Processing[J]. Chinese Journal of Applied Chemistry, ;2017, 34(8): 885-890. doi: 10.11944/j.issn.1000-0518.2017.08.170128 shu

Poly(propylene carbonate)/Starch Blends Prepared by Water-assisted Processing

BIAN Junjia ^a,b ,
XU Mingzhi ^a,b ,
HAN Changyu ^a ,
WU Dandan ^a ,
HAN Lijing ^a ,
DONG Lisong ^a,,

a.
Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
b.
University of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author: DONG Lisong, dongls@ciac.ac.cn
Received Date: 24 April 2017
Revised Date: 24 May 2017
Accepted Date: 6 June 2017

Fund Project: Supported by the National Natural Science Foundation of China(No.51503204), Changchun Science and Technology Bureau Planning Program(No.16CX13), the Fund of Chinese Academy of Sciences(Changchun Branch)(No.2015SYHZ0014)the Fund of Chinese Academy of Sciences(Changchun Branch) No.2015SYHZ0014Changchun Science and Technology Bureau Planning Program No.16CX13the National Natural Science Foundation of China No.51503204

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Poly(propylene carbonate)(PPC)/starch blends with different blend morphologies were prepared by normal melt blending and water-assisted processing method. The effect of blend morphology on glass transition temperature(T_g), rheological and mechanical properties of PPC/starch blends was studied in details. The obtained results show that the starch remains its original granule structure when a normal melt blending is used. Interestingly, fine dispersed starch fibers are formed during extrusion of PPC/starch blends with the assistance of water. The formation of starch fibers in PPC matrix will increase the contact area between them leading to an enhanced interfacial interaction. Therefore, T_g, storage modulus and complex viscosity increase apparently. Additionally, when mass fraction of starch is 30%, there is a 67.7% increase in tensile modulus of PPC/starch blend.
- poly(propylene carbonate),
- starch,
- blends,
- water-assisted processing
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