文献类型：期刊文献

英文题名：Processing-Structure-Property Correlations of Polyethersulfone/Perfluorosulfonic Acid Nanofibers Fabricated via Electrospinning from Polymer-Nanoparticle Suspensions

作者：Lu, Pei-Pei[1,2];Xu, Zhen-Liang[1,2];Yang, Hu[2];Wei, Yong-Ming[2]

机构：[1]E China Univ Sci & Technol ECUST, State Key Lab Chem Engn, Chem Engn Res Ctr, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol ECUST, Chem Engn Res Ctr, Membrane Sci & Engn R&D Ctr, Shanghai 200237, Peoples R China

年份：2012

卷号：4

期号：3

起止页码：1716

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20121414919931);WOS:【SCI-EXPANDED(收录号:WOS:000301968400078)】；

基金：The authors thank the Key Technology R&D Program of China (20092 X 02032) for financial support. The authors are grateful to Dr. Dong-gen Chen for help with the measurement of SEM pictures of these nanofibers.

语种：英文

外文关键词：electrospinning; nanofiber; polyethersulfone; perfluorosulfonic acid; CaCO3 nanoparticle; catalytic activity

摘要：Polyethersulfone (PES)/perfluorosulfonic acid (PFSA) nanofiber membranes were successfully fabricated via electrospinning method from polymer solutions containing dispersed calcium carbonate (CaCO3) nanoparticles. ATR-FTIR spectra indicated that the nanoparticles mainly existed on the external surface of the nanofibers and could be removed completely by acid treatment. Surface roughness of both the nanofibers and the nanofiber membranes increased with the CaCO3 loading. Although FTIR spectra showed no special interaction between sulfonic acid (-SO3) groups and CaCO3 nanoparticies, XPS measurement demonstrated that the content of -SO3 groups on external surface of the acid-treated nanofibers was enhanced by increasing CaCO3 loading in solution. Besides, the acid-treated nanofiber membranes were performed in esterification reactions, and exhibited acceptable catalytic performance due to the activity of -SO3H groups on the nanofiber surface. More importantly, this type of membrane was very easy to separate and recover, which made it a potential substitution for traditional liquid acid catalysts.