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以聚乙烯醇(PVA)与聚乙二醇(PEG)共混,并以正硅酸乙酯(TEOS)和钛酸四丁酯(TBT)为无机前驱体,采用溶胶-凝胶法制备了不同(SiO2-TiO2)含量的PVA-PEG/SiO2-TiO2杂化溶胶,陈化后用提拉法制得杂化纤维。研究了杂化溶胶的可纺性,并使用IR、光学显微镜、UV-Vis和TG对杂化纤维的结构与性能进行了研究。结果表明:随硅钛摩尔比的增加或随有机相中PEG/PVA质量比的增加,溶胶的可纺性变好;有机相与无机相之间通过化学键连接;纤维直径为50μm左右;TiO2的引入增加了其抗紫外性,杂化纤维的耐热性优于纯PVA-PEG。
Polyvinyl alcohol (PVA) and polyethylene glycol (PEG) were blended and prepared by sol-gel method using TEOS and TBT as inorganic precursors Different (SiO2-TiO2) content of the PVA-PEG / SiO2-TiO2 hybrid sol, after curing the use of Czochralski hybrid fiber. The spinnability of the hybrid sol was investigated. The structure and properties of hybrid fibers were investigated by IR, optical microscope, UV-Vis and TG. The results showed that the spinnability of sol was improved with the increase of molar ratio of silica to titania or with the mass ratio of PEG / PVA in the organic phase. The organic phase and the inorganic phase were connected by chemical bonds, the diameter of fiber was about 50 μm, Introduced to increase its UV resistance, hybrid fiber heat resistance is better than pure PVA-PEG.