采用浓硫酸和聚醚醚酮(PEEK)制备了不同磺化度(DS)的磺化聚醚醚酮(SPEEK)。通过红外光谱和核磁共振对SPEEK的化学结构进行表征,得到了30℃、45℃和60℃制备条件下,磺化时间分别为1h、2h、3h、4h、5h和6h的SPEEK的磺化度变化趋势,选择SPEEK浓度为25%溶于N,N-二甲基乙酰胺(DMAC)中,获得不同磺化度的SPEEK静电纺丝液。通过比较静电纺丝液的黏度和导电率,确定合适的磺化工艺以制备具有均匀微观结构的SPEKK静电纺丝膜。研究结果表明,磺化度为60.4%条件下,制得的SPEEK静电纺丝膜的黏度为3156.2Pa·s,导电率为791.3mS/cm,纤维的平均直径为157.4nm。
Sulfonated poly(ether ether ketone)(SPEEK) with different sulfonation degrees (DS) were prepared by concentrated H2SO4 and poly(ether ether ketone)(PEEK).The chemical structure of SPEEK was characterized by FT-IR and 1H-NMR.The integrated area of the nuclear magnetic spectrum was calculated to brief the trend of DS under the conditions of 30℃,45℃ and 60℃,during 1～6h.The SPEEK was selected and dissolved in DMAC at a mass ratio of 25% to obtain SPEEK electrospinning solution in a different DS.By comparing the viscosity and conductivity of the electrospinning solution,the suitable sulfonation process wa determined to prepare a SPEEK electrospinning film with uniform microstructure.The results showed that when the sulfonation degree was 60.4%,the viscosity of SPEEK film was 3156.2Pa·s,the conductivity was 791.3mS/cm and the average diameter was 157.4nm.
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基金资助
111引智计划(B07024);国家重点研发项目(2018YFC1106200);上海市科委科技支撑项目(16441903803,18441902600)
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