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Research of Synthesis and Heat Resistance on Lactic Acid-Styrene-Maleic Anhydride Copolymer

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Abstract:

The polymerization process and heat resistance of lactic acid-styrene-maleic anhydride copolymer was studied. Lactic acid-polystyrene-maleic anhydride copolymer was prepared with styrene, maleic anhydride and lactic acid by melt copolymerization. Its structure was characterized by Infrared Spectrum (IR), and the thermal properties were tested by Differential Scanning Calorimetry (DSC) and Thermo Gravimetric Analyzer (TGA). The paper research on the effect of the proportion of different monomer and the polymerization process on the heat resistance mainly. The optimum conditions for the synthesis were determined by means of experiment: the content of catalyst was 0.5(wt%), the ratio of styrene-maleic anhydride and lactic was 0.6g/10g, at 170 °C. for 5 h. The results showed that the glass transition temperature (Tg) of the copolymer increased by 26.0°C.and the 5% weight-loss temperature of it increased by 25.0°C compared with pure polylactic acid.

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Periodical:

Advanced Materials Research (Volume 772)

Pages:

25-29

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.772.25

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Online since:

September 2013

Authors:

Jian Jiang Shang, Li Na Jiang, De Qiang Li, Xiao Yan Zhu

Keywords:

Heat Resistance, Lactic Acid, Maleic Anhydride, Melt Copolymerization, Styrene

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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