CAJ | 학술논문

基于乳液成膜技术，以硅溶胶为填充剂，制备了硅溶胶聚二甲基硅氧烷/PDMS 杂化膜，用于分离水中正丁醇。对膜进行了FI-IR分析及形貌、热稳定性、接触角和力学性能表征；研究了硅溶胶的加入对膜渗透汽化性能的影响。结果表明，硅溶胶与 PDMS 基质结合良好，没有明显相界面，膜的渗透汽化性能明显提高。在料液质量分数为1%、操作温度为40℃时，随着膜中硅溶胶含量的增加，膜的分离选择性和对丁醇的渗透性均呈现先升高后下降的趋势；在硅溶胶含量为3.75%时，分离选择性高达9.03；在硅溶胶含量为7.5%时，膜对丁醇的渗透性高达2.9×106Barrer。
기우유액성막기술，이규용효위전충제，제비료규용효취이갑기규양완/PDMS 잡화막，용우분리수중정정순。대막진행료FI-IR분석급형모、열은정성、접촉각화역학성능표정；연구료규용효적가입대막삼투기화성능적영향。결과표명，규용효여 PDMS 기질결합량호，몰유명현상계면，막적삼투기화성능명현제고。재료액질량분수위1%、조작온도위40℃시，수착막중규용효함량적증가，막적분리선택성화대정순적삼투성균정현선승고후하강적추세；재규용효함량위3.75%시，분리선택성고체9.03；재규용효함량위7.5%시，막대정순적삼투성고체2.9×106Barrer。
Based on the emulsion film forming technology,colloidal silica/PDMS hybrid membranes were prepared with colloidal silica as filler,and used for the pervaporative separation ofn-butanol from aqueous solution. The membranes were analyzed by FI-IR,and characterized with morphology, thermal stability,contact angle,and mechanical property. The effect of colloidal silica content on membrane pervaporative performance was studied. The results showed that the incorporation of colloidal silica improved the pervaporative performance obviously; colloidal silica combined with PDMS substrates very well,and there was no obvious phase interface. At 40℃,feed concentration of 1%,with an increase of colloidal silica content,bothn-butanol/water selectivity and permeability for n-butanol increased first and then decreased. When the colloidal silica content is 3.75%,the selectivity was the highest,and reached 9.03; while permeability forn-butanol reached the highest, 2.9×106Barrer,when the content is 7.5%.