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首页> 外文期刊>Journal of Applied Polymer Science >Structural investigations of poly(ethylene terephthalate)-graft-polystyrene copolymer films
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Structural investigations of poly(ethylene terephthalate)-graft-polystyrene copolymer films

机译：聚对苯二甲酸乙二醇酯-接枝-聚苯乙烯共聚物薄膜的结构研究

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摘要

Structural investigations of poly(ethylene terephthalate)-graft-polystyrene (PET-g-PS) films prepared by radiation-induced grafting of styrene onto commercial poly(ethylene terephthalate) (PET) films were carried out by FTIR, X-ray diffraction (XRD), and differential scanning calorimetry (DSC). The variation in the degree of crystallinity and the thermal characteristics of PET films was correlated with the amount of polystyrene grafted therein (i.e., the degree of grafting). The heat of melting was found to be a function of PET crystalline fraction in the grafted films. The grafting is found to take place by incorporation of amorphous polystyrene grafts in the entire noncrystalline (amorphous) region of the PET films and at the surface of the crystallites. This results in a decrease in the degree of crystallinity with the increase in the degree of grafting, attributed to the dilution of PET crystalline structure with the amorphous polystyrene, without almost any disruption in the inherent crystallinity. (C) 2002 Wiley Periodicals, Inc. [References: 15]
机译：通过FTIR，X射线衍射（ XRD）和差示扫描量热法（DSC）。 PET膜的结晶度和热特性的变化与其中接枝的聚苯乙烯的量（即接枝度）相关。发现熔融热是接枝膜中PET结晶分数的函数。发现接枝是通过在PET薄膜的整个非晶（非晶）区域和微晶表面掺入无定形聚苯乙烯接枝而进行的。这导致结晶度随接枝度的增加而降低，这归因于用无定形聚苯乙烯稀释PET晶体结构，而几乎没有破坏固有结晶度。 （C）2002 Wiley Periodicals，Inc. [参考：15]

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