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

doi:10.11944/j.issn.1000-0518.2017.08.170128

Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (8): 885-890.DOI: 10.11944/j.issn.1000-0518.2017.08.170128

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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^*()

^aKey Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
^bUniversity of Chinese Academy of Sciences,Beijing 100039,China

Received:2017-04-24 Accepted:2017-06-06 Published:2017-07-25 Online:2017-07-26
Contact: DONG Lisong
Supported by:
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)

Abstract

Abstract:

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.

Key words: poly(propylene carbonate), starch, blends, water-assisted processing

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.

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

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