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首页> 外文期刊>Journal of Applied Polymer Science >Acrylic polyester resins containing perfluoropolyethers structures: Synthesis, characterization, and photopolymerization
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Acrylic polyester resins containing perfluoropolyethers structures: Synthesis, characterization, and photopolymerization

机译：含全氟聚醚结构的丙烯酸聚酯树脂：合成，表征和光聚合

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摘要

Poly(epsilon-caprolactone-b-perfluoropolyether-b-epsilon caprolactone) (PCL-PFPE-PCL) block copolymers having different PCL block lengths and end-capped with methacrylate groups were prepared and characterized. Spectroscopic analyses confirmed the expected molecular structure of the products. After UV curing, the films revealed the presence of two amorphous phases, corresponding to fluorinated and hydrogenated moieties, respectively. The material containing long PCL blocks showed also a crystalline phase. Surface properties of the UV-cured films were evaluated: The surfaces have a very high hydrophobic character in spite of the presence of many polar OH groups present in the polymeric network and a high hysteresis in wetting. An enrichment of fluorine at the air-side surface was shown by contact-angle measurements, except when long PCL sequences are present. The theta(adv) angles decreased by increasing the content of PCL, that is, by decreasing the content of fluorine. (C) 2000 John Wiley & Sons, Inc. [References: 19]
机译：制备并表征了具有不同PCL嵌段长度并用甲基丙烯酸酯基封端的聚（ε-己内酯-b-全氟聚醚-b-ε-己内酯）（PCL-PFPE-PCL）嵌段共聚物。光谱分析证实了预期的产物分子结构。 UV固化后，膜显示存在两个非晶相，分别对应于氟化和氢化部分。包含长PCL嵌段的材料也显示出结晶相。评估了UV固化膜的表面性能：尽管聚合物网络中存在许多极性OH基团，但表面仍具有非常高的疏水特性，并且在润湿过程中具有高滞后性。通过接触角测量显示了氟在空气侧表面的富集，除非存在较长的PCL序列。通过增加PCL的含量，即通过减少氟的含量，θ（adv）角减小。 （C）2000 John Wiley＆Sons，Inc. [参考：19]

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