China Plastics ›› 2008, Vol. 22 ›› Issue (10): 38-41.DOI: 10.19491/j.issn.1001-9278.2008.10.008

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Compatibility and Degradation of Starch and MAH-g-PS Blending

SUN Xiao-wei, TAI Li-min   

  1. Department of Material Science and Engineering, Liaoning Technical University
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-25 Published:2008-10-25

Abstract: In this article, the compatibility and degradable performance of blends of starch/PS-g-MAH were studied. The grafting product was characterized by infrared spectra. Content of MAH in product was determined by titration. It is showed that PS-g-MAH was produced. The influence of different contents of MAH to the compatibility of starch/PS was analyzes by SEM. Experiments show that, adding MAH can significantly improve the compatibility between starch and PS, When PS/MAH=95/5, the graft rate achieved the best value 2.27%. The degradable performance of pure starch/PS and starch/MAH-g-PS samples was compared. The degradation rate of starch/PS-g-MAH blending was 20.09 % after 40 d, less than starch/PS.

Key words: starch, maleic anhydride grafted polystyrene, compatibility, grafting modification, degradation