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首页> 外文期刊>Journal of Applied Polymer Science >Improving the antifouling properties of polypropylene surfaces by melt blending with polyethylene glycol diblock copolymers
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Improving the antifouling properties of polypropylene surfaces by melt blending with polyethylene glycol diblock copolymers

机译：用聚乙二醇二嵌段共聚物熔融共混改善聚丙烯表面的防污性能

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摘要

Protein-resistant polyethylene-block-poly(ethylene glycol) (PE-b-PEG) copolymers of different molecular weights at various concentrations were compounded by melt blending with polypropylene (PP) polymers in order to enhance their antifouling properties. Phase separation of the PE-b-PEG copolymer and its migration to the surface of the PP blend, was confirmed by attenuated total reflectance-Fourier transform infrared, X-ray photoelectron spectroscopy, and static water contact angle measurements. Enrichment of PEG chains at the surface of the blends increased with increasing PE-b-PEG copolymer concentration and molecular weight. The PP blends compounded with PE-b-PEG copolymer having the lowest molecular weight (875 g mol(-1)), at the lowest concentration (1 wt %), gave the lowest bovine serum protein adsorption (30% less) compared to that of neat PP. At higher concentrations (5 and 10 wt %), and higher molecular weights (920, 1400, and 2250 g mol(-1)), the PE-b-PEG copolymers leached-out resulting in protein adsorption comparable to that of neat PP. (c) 2017 Wiley Periodicals, Inc.
机译：通过用聚丙烯（PP）聚合物的熔融共混，将不同分子量的抗性聚乙烯 - 嵌段 - 聚（乙二醇）（PE-B-PEG）（PE-B-PEG）（PE-B-PEG）与各种浓度以聚丙烯（PP）聚合物混合，以增强它们的防污性能。通过减弱的总反射率 - 傅里叶变换红外，X射线光电子能谱和静电接触角测量，确认PE-B-PEG共聚物的相分离及其对PP混合物表面的迁移。随着PE-B-PEG共聚物浓度和分子量增加，共混物表面的富集PEG链增加。与最低浓度（1wt％）的PE-B-PEG共聚物配混的PP共混物，与其相比，得到最低牛血清蛋白吸附（30％较小）整洁的pp。在较高的浓度（5和10wt％），更高的分子量（920,1400和2250g（-1）），PE-B-PEG共聚物浸出导致蛋白质吸附与整洁PP相当。 （c）2017 Wiley期刊，Inc。

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