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Effect of compatibilizer on structural rheology of PP/PET blends
作者:Wu Defeng,Cao Jian,Wu Lanfeng,Zhang Ming
關鍵字:Poly(ethylene terephthalate),Polypropylene,Compatibilizer , Phase morphology , Structural rheology
論文來源:期刊
具體來源:Acta Polymerica Sinica
發表時間:2007年
The maleic anhydride grafted polypropylene (PP-g-MAH) was used as a compatibilizer to improve the immiscible phase morphology of polypropylene/poly( ethylere terephthalate)(PP/PET) blends.The effect of PP-g-MAH on the phase morphology and structural rheology of the blends was studied.The results show that for PP/PET blends with PET_rich composition,the ad di tion of PP-g-MAH reduces the dispersed PP particle size remarkably,leading to l arge change in the shape relaxation and deformation as well as break-up behavio r of PP drops.For PP/PET blends with the components around the phas e inversion point,the coexistence of phase morphology of `sea-island'' and cocon tinuous structure disappears with addition of PP-g-MAH.The enhancement in depen dency of low-frequency modulus on frequency also indicates that phase interacti ons increase due to the compatible effect.However,for PP/PET blends with rich P P component,the addition of PP-g-MAH nearly has no influence on both the m orphology and rheology.
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