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《ACTA POLYMERICA SINICA》 1998-01
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STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL

LIU Zhehui, ZHU Xiaoguang, ZHANG Xuedong, QI Zongneng (Institute of Chemistry,Chinese Academy of Sciences,Beijing\ 100080) CHOY C L (Department of Applied Physics,Polytechnic University of Hong Kong,Hong Kong) WANG Fosong (Chinese Academy of Sciences,Be  
A new equation for correlating morphological parameters,particle size ( d ),particle size distribution ( σ ),particle volume fraction (  ) and matrix ligament thickness ( T ) is derived.The equation is generally applicable to binary polymer blends with the lg normal distribution of particle size and the morphology of well dispersed particles.The effect of σ on T is discussed.The new equation predicts that T increases with d and σ ,and with reducing  .The effect of σ is found to be influenced by  .The higher the  ,the more significant the effect of σ on T .The new equation is applied to the poly(vinyl chloride)/nitrile rubber,polypropylene (PP)/EPDM,and PP/EVA blends.The theoretical predictions agree well with the experimental results.
【Fund】: 国家自然科学基金
【CateGory Index】: TQ316.6
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