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首页> 外文期刊>Journal of Applied Polymer Science >Surface modification of polypropylene sheets by UV-radiation grafting polymerization
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Surface modification of polypropylene sheets by UV-radiation grafting polymerization

机译：紫外线辐射接枝聚合聚丙烯片材的表面改性

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摘要

1,6-Hexanediol diacrylate (HDDA) was grafted onto polypropylene (PP) substrates in the presence of benzophenone (BP) and isopropylthioxanthone (ITX) photoinitiators, and then polyurethane acrylate formulations were coated onto the HDDA-g-PP substrates, using UV radiation. The amount grafted and the grafting efficiency of the polymerizations were determined gravimetrically. The effects of the photoinitiator concentration and the UV radiation intensity on the physicochemical surface properties and the grafting efficiency of the UV-radiation grafting polymerizations were characterized in detail using contact-angle measurements, Fourier transform infrared spectroscopy with attenuated total internal reflection, and scanning electron microscopy. The results showed that the amount grafted and the surface polarity of the HDDA-g-PP substrates both increased linearly with increasing BP photoinitiator concentration and UV radiation intensity, and that the addition of a small amount of ITX markedly enhanced both parameters, probably due to photosensitization. The adhesion of the UV-cured coating onto the HDDA-g-PP substrates was evaluated using the crosshatch adhesion test. The results indicated that the amount of HDDA grafted onto the PP substrates should exceed about 1 mmol/cm(2) for satisfactory adhesion with the UV-cured coating. (c) 2005 Wiley Periodicals, Inc.
机译：在二苯甲酮（BP）和异丙基噻吨酮（ITX）光引发剂的存在下，将1,6-己二醇二丙烯酸酯（HDDA）接枝到聚丙烯（PP）基材上，然后使用UV将聚氨酯丙烯酸酯配方涂布到HDDA-g-PP基材上辐射。用重量分析法测定聚合的接枝量和接枝效率。使用接触角测量，具有衰减的全内反射的傅里叶变换红外光谱和扫描电子，详细表征了光引发剂浓度和UV辐射强度对UV辐射接枝聚合的理化表面性质和接枝效率的影响。显微镜检查。结果表明，HDDA-g-PP底物的接枝量和表面极性均随BP光引发剂浓度和UV辐射强度的增加而线性增加，加入少量ITX显着增强了这两个参数，这可能是由于光敏化。使用交叉影线粘附力测试评估UV固化涂层在HDDA-g-PP基材上的粘附力。结果表明，为了与紫外线固化涂料具有令人满意的粘合力，嫁接到PP基材上的HDDA的量应超过1 mmol / cm（2）。 （c）2005年Wiley Periodicals，Inc.

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