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首页> 外文期刊>Journal of Applied Polymer Science >Fluorinated Polypropylene Barrier Materials: Preparation and Characterization
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Fluorinated Polypropylene Barrier Materials: Preparation and Characterization

机译：氟化聚丙烯阻隔材料：制备和表征

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摘要

A series of novel fluorinated polypropylenes (FPP) with low surface tension were prepared by reactive extrusion of polypropylene (PP) with fluorinated methacrylate, 2,3,4,5,5,5-hexafluoro-2,4-bis (trifluoromethyl) pentyl methacrylate (HFPMA), aiming at improving the barrier properties of the material for the containers of organic liquids. The surface characteristics of these polypropylene materials and the influence of HFPMA on the crystalline behavior were investigated by the X-ray photoelectron spectroscopy (XPS) and wide-angle X-ray diffraction (WAXD). The surface tension of the FPPs is found to be in the range of 28.8-22.9 mN/m while varying the fluorinated monomer contents, which was lower than that of the original PP (about 30 mN/m). The barrier properties of these materials as the containers were studied by using blow-molded bottles made of FPP and PP. The results showed that enhanced permeation resistance for acetone and xylene solvents as well as better antiultraviolet transmittance properties were achieved in FPP bottles. The acetone and xylene permeation ratio of the FPP bottles were about 1.62 and 1.28 times compared to that of PP bottles, respectively. In addition, the WAXD and DSC studies suggested that the grafting of the fluorinated methacrylate, HFPMA, onto the PP might induce the formation of 13 form crystals, which is rarely found in the common PP materials. The percentage of 1 form crystals reached 33.6%, estimated by WAXD, in the FPP with 20% (by weight) of HFPMA.
机译：通过将聚丙烯（PP）与氟化甲基丙烯酸酯，2,3,4,5,5,5-六氟-2,4-双（三氟甲基）戊基反应挤出，制备了一系列低表面张力的新型氟化聚丙烯（FPP）。甲基丙烯酸酯（HFPMA），旨在改善用于有机液体容器的材料的阻隔性能。通过X射线光电子能谱（XPS）和广角X射线衍射（WAXD）研究了这些聚丙烯材料的表面特性以及HFPMA对结晶行为的影响。在改变氟化单体含量的同时，发现FPP的表面张力在28.8-22.9mN / m的范围内，这低于原始PP的表面张力（约30mN / m）。通过使用由FPP和PP制成的吹塑瓶研究了这些材料作为容器的阻隔性能。结果表明，在FPP瓶中，提高了对丙酮和二甲苯溶剂的抗渗透性以及更好的抗紫外线透过性。与PP瓶相比，FPP瓶的丙酮和二甲苯渗透率分别约为1.62和1.28倍。此外，WAXD和DSC研究表明，将氟化甲基丙烯酸酯HFPMA接枝到PP上可能会诱导形成13种晶形，这在普通PP材料中很少见。根据WAXD估计，在FPP中含有20％（按重量计）HFPMA的1种晶型的百分比达到了33.6％。

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