The hydrophilic membrane was prepared by blending and UV grafting.The film was prepared with polyvinylidene fluoride as raw material.The blend film was prepared with N,N dimethylacetamide as solvent,nano calcium carbonate and nano silica as blends.Then BP was used as photoinitiator and grafted acrylic acid to prepare hydrophilic membrane.The films were characterized by optical microscope and contact angle measuring instrument.The results shown that when the amount of PVDF was 12% and the stirring time was 3 hours,the film was evenly distributed and the contact angle was 72.41.When nano calcium carbonate was added 5% (relative to PVDF) grafting time 50min,BP was 0.3mol/L and acrylic acid was 5%,the contact angle was 26.26.When nano silica was added 5% (relative to PVDF) grafting time 40min,BP was 0.4mol/L,acrylic acid was 6%,the contact angle was 27.49.The results showed that the hydrophilicity of the films could be improved by blending UV grafting.
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基金资助
四川理工学院研究生创新基金资助项目(y2018058);国家公安部重点项目(2017JSYJA14);四川省自贡市科技局项目(2018YYJC12);精细化工助剂及表面活性剂四川省高等学校重点实验室项目(2018JXY06)
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