摘要
为研究掺杂纳米Si O2对EVOH磺酸锂（EVOH-SO3Li）无纺布形貌及热特性影响,以聚乙烯-乙烯醇（EVOH）和1,3-丙烷磺酸内酯为原料,叔丁醇锂为催化剂,合成EVOH磺酸锂接枝聚合物,并进行纳米Si O2掺杂改性,经静电纺丝制备出EVOH-SO3Li、EVOH-SO3Li/Si O2两种无纺布;应用扫描电镜观察分析了无纺布的微观形貌,并通过差示扫描量热仪及热失重仪对无纺布热性能进行研究分析;结果表明：经纳米Si O2改性后,纤维直径降低,分布在0.1~0.2μm之间,无纺布结晶度升高,熔点提高35℃,起始热分解温度升高30℃.
To study the influence of SiO2 on microcosmic morphology and thermal properties of EVOH-SO3Li non-woven, with Lithium Tert-butoxide as the catalyst, a polymer electrolyte of poly （ethylene-co-vinyl alcohol） end-capped with lithium sulfonate （ EVOH-SO3 Li） was synthesized from poly （ ethylene-co-vinyl alcohol） and 1,3- propane sultone. Furthermore, nano-SiO2 particles were added into EVOH-SO3Li solution and the EVOH-SO3 Li, EVOH-SO3Li/SiO2 non-woven membranes were prepared by electro-spinning technique. Scanning Electron Micro- scope was utilized to characterize the features microcosmic of the non-woven, meanwhile, Differential Scanning Cal- orimetry and Thermal gravimetric analyzer were used to characterize thermal properties of the non-woven. The re- suits showed that, with the addition of SiO/, the fiber diameter of non-woven membrane was slender, it was be- tween 0. 1-0.2 μm, moreover, the degree of crystallinity became higher and melting point increased by 35 ℃, ther- mal decomposition temperature increased by 30 %.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2015年第2期101-104,共4页
Journal of Harbin University of Science and Technology
基金
黑龙江省自然科学基金(E200617)
