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首页> 外文期刊>Journal of Applied Polymer Science >Imparting antifouling properties of silicone hydrogels by grafting poly(ethylene glycol) methyl ether acrylate initiated by UV light
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Imparting antifouling properties of silicone hydrogels by grafting poly(ethylene glycol) methyl ether acrylate initiated by UV light

机译：通过紫外光引发的聚（乙二醇）甲基醚丙烯酸酯的接枝损害有机硅水凝胶的防污性能

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摘要

Both hydrophilic and antifouling surfaces were prepared on silicone hydrogels with poly(ethylene glycol) methyl ether acrylate (PEGMA) grafted by UV-induced radical polymerization. The PEGMA-grafted silicone hydrogels were characterized by graft yield and static water contact angle measurements. According to the results, the graft yield reached a maximum at 8 min of UV exposure time and 20 wt% PEGMA concentration. The modified silicone hydrogels possessed hydrophilic surfaces with the lowest water contact angle of 36°. The oxygen permeability and transparency of the PEGMA-grafted silicone hydrogels were as high as the unmodified silicone hydrogel. The mechanical property of silicone hydrogels was maintained at about 95% of the tensile strength and elastic modulus after the PEGMA grafting. The in vitro single protein adsorption on the PEGMA-grafted silicone hydrogels decreased by 70-80% compared to the unmodified silicone hydrogel. The PEGMA-grafted silicone hydrogel is expected to be a novel biomaterial, which possesses excellent surface hydrophilicity, antifouling property, oxygen permeability, and mechanical property.
机译：在有机硅水凝胶上制备了亲水性表面和防污表面，并通过紫外线诱导的自由基聚合接枝了聚（乙二醇）甲基醚丙烯酸酯（PEGMA）。 PEGMA接枝的有机硅水凝胶的特征在于接枝率和静态水接触角的测量。根据结果​​，在紫外线暴露时间为8分钟和PEGMA浓度为20 wt％时，接枝产率达到最大值。改性有机硅水凝胶具有亲水性表面，其最低水接触角为36°。 PEGMA接枝的有机硅水凝胶的透氧性和透明性与未改性的有机硅水凝胶一样高。 PEGMA接枝后，有机硅水凝胶的机械性能保持在拉伸强度和弹性模量的约95％。与未改性的有机硅水凝胶相比，PEGMA接枝的有机硅水凝胶在体外对单个蛋白质的吸附降低了70-80％。 PEGMA接枝的有机硅水凝胶有望成为一种新型的生物材料，它具有出色的表面亲水性，防污性能，透氧性和机械性能。

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