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Structure and Morphology of Isotactic Polypropylene Functionalized by Electron Beam Irradiation

机译:电子束辐照功能化等规聚丙烯的结构与形貌

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摘要

The structure and morphology of isotactic polypropylene (iPP), functionalized by electron beam irradiation at room temperature in air, are investigated by elementary analysis, FT-infrared (FTIR) spectroscopy, electron spectroscopy for chemical analysis (ESCA), polariscope, and static contact angle. Elementary analysis reveals that the element oxygen has been introduced onto iPP chains after electron beam irradiation. In addition, as shown from FTIR spectra, oxygen-containing groups, such as carbonyl, carboxyl, and ether groups, are introduced onto iPP molecular chains. The dependence of oxygenation extent (as measured by O_IS/C_IS value of ESCA spectra) on electron beam dose is obtained. Under polariscope, it can be observed that the dominant alpha phase appears to become more enhanced, and there is no crystalline phase transition. The static contact angle of iPP decreases with increasing dose.
机译:通过元素分析,傅立叶变换红外(FTIR)光谱,化学分析用电子光谱(ESCA),偏光镜和静态接触,研究了在室温下通过电子束辐射在空气中进行功能化的全同立构聚丙烯(iPP)的结构和形态。角度。元素分析表明,电子束辐照后,元素氧已被引入iPP链上。另外,如从FTIR光谱所示,将含氧基团例如羰基,羧基和醚基引入到iPP分子链上。获得氧合程度(通过ESCA光谱的O_IS / C_IS值测量)对电子束剂量的依赖性。在偏光镜下,可以观察到主要的α相似乎变得更加增强,并且没有结晶相变。 iPP的静态接触角随剂量增加而减小。

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