Enhancement of retention and antifouling capability for PVDF UF membrane modified by nano-TiO2 sol

Li M. Jia; Chen Wen; Jing Y. Xu; Chang F. Xiao

doi:10.1117/12.838406

20 October 2009 Enhancement of retention and antifouling capability for PVDF UF membrane modified by nano-TiO₂ sol

Li M. Jia, Chen Wen, Jing Y. Xu, Chang F. Xiao

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74935R (2009) https://doi.org/10.1117/12.838406
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

Novel PVDF/TiO₂ hybrid membranes were prepared by phase inversion process from a PVDF/DMAc/PVP/tetrabutyltitanate/water system. The membrane characteristics such as morphology, thermal properties, porosity, water contact angle, tensile strength and separability were investigated by a series of analytical methods including atomic force microscope (AFM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and zeta potential measurements. The performances and surface properties of hybrid and PVDF membranes were tested by the removal of bovine serum albumin (BSA) from aqueous solution, evaluated by using two dyes with different charge (congo red and methylene blue). Based on the experimental results, TiO2 nanoparticles of a quantum size (~8 nm or less) in anatase crystal structure were obtained from the controlled hydrolysis of tetrabutyltitanate. Besides, TiO₂ sol was introduced into polymer molecule for the hybrid membrane with less than 12 vol % TiO₂ sol to PVDF and contributed to a smooth surface and more apertures due to both the interaction and compatibility between polymer and TiO2 sol, to which the improvement in hydrophilicity, thermal stability, mechanical strength and antifouling ability is attributed. The observed rejections were optimized for PVDF/TiO₂ hybrid membrane with respect to PVDF membrane. In particular, the pure water permeation flux was increased from126.6 to166.7 L/m2•h for hybrid membrane with a relative flux of 80 % compared to 50 % of relative flux observed for PVDF membrane.

Citation Download Citation

Li M. Jia, Chen Wen, Jing Y. Xu, and Chang F. Xiao "Enhancement of retention and antifouling capability for PVDF UF membrane modified by nano-TiO₂ sol", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74935R (20 October 2009); https://doi.org/10.1117/12.838406

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available