Carboxyl-functionalized Nanocellulose Reinforced Nanocomposite Proton Exchange Membrane

• 来源期刊: 高等学校化学研究（英文版）
• 年，卷（期）: 2019,（4）
• 页码范围: 735-741
• 页数: 7页
• 语种: 英文
• DOI: 10.1007/s40242-019-8330-3

摘要

Nanocellulose(NCC) was prepared through the acid hydrolysis of microcellulose(MCC) and was reacted with maleic anhydride to obtain carboxyl-functionized nanocellulose(MA-NCCs).The presence of—OH and —SO3H on the surface of rod-like MA-NCC was confirmed by Fourier transform infrared spectrometry(FTIR).Sulfonated poly(aryl ether ether ketone ketone)(Ph-SPEEKK) was synthesized with bis(4-fluorophenyl-methanone) and 2-phenylhydroquinone as monomer.MA-NCC/Ph-SPEEKK nanocomposite membranes with different MA-NCCs content were prepared,and their properties were characterized.Compared with Ph-SPEEKK,MA-NCC/Ph-SPEEKK nanocomposite membrane showed better mechanical and thermal properties and higher proton conductivity.The proton conductivity of the composite membrane with 4％(mass fraction) MA-NCCs under 80 ℃ was 0.095 S/cm.And its tensile strength reached 30.3 MPa,which was 21.2％ higher than that of Ph-SPEEKK pure polymer membrane.