Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO<sub>2</sub> Nanoparticles

Qing Zhou; Jian-hua Li; Bang-feng Yan; Dong Wu; Qi-qing Zhang

doi:10.1007/s10118-014-1457-2

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Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO₂ Nanoparticles

Updated：2021-06-21

- Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO₂ Nanoparticles
- Chinese Journal of Polymer Science Vol. 32, Issue 7, Pages: 892-905(2014)
- Affiliations：
  
  a.Institute of Biomedical and Pharmaceutical Technology and College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350001, China
  b.School of Stomatology, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou 350001, China
- Author bio：
  
  **Jian-hua Li (李建华), E-mail: jhli_2005@163.com
  Dong Wu (吴东), E-mail: wudong510_5@hotmail.com
  Qi-qing Zhang (张其清), E-mail: zhangqiq@126.com
- Funds：
- DOI：10.1007/s10118-014-1457-2
  CLC：
- Received：24 October 2013，
  
  Revised：2013-12-30，
  
  Accepted：13 January 2014，
  
  Published：2014-07
- Accepted：
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Qing Zhou, Jian-hua Li, Bang-feng Yan, et al. Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO₂ Nanoparticles[J]. Chinese Journal of Polymer Science, 2014, 32(7): 892-905. DOI: 10.1007/s10118-014-1457-2.
DOI：

Qing Zhou, Jian-hua Li, Bang-feng Yan, et al. Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO₂ Nanoparticles[J]. Chinese Journal of Polymer Science, 2014, 32(7): 892-905. DOI: 10.1007/s10118-014-1457-2. DOI：

摘要

Abstract

A novel hydrophilic nanocomposite additive (TiO

-PNIPAAm) was synthesized by the surface modification of titanium dioxide (TiO

) with

-isopropylacrylamide (NIPAAm)

via

"graft-from" technique. And the nanocomposite membrane of poly(vinylidene fluoride) (PVDF)/TiO

-PNIPAAm was fabricated by wet phase inversion. The graft degree was obtained by thermo-gravimetric analysis (TGA). Fourier transform infrared attenuated reflection spectroscopy (FTIR-ATR) and X-ray photoelectronic spectroscopy (XPS) characterization results suggested that TiO

-PNIPAAm nanoparticles segregated on membrane surface during the phase separation process. Scanning electron microscopy (SEM) was conducted to investigate the surface and cross-section of the modified membranes. The water contact angle measurements confirmed that TiO

-PNIPAAm nanoparticles endowed PVDF membranes better hydrophlilicity and thermo-responsive properties compared with those of the pristine PVDF membrane. The water contact angle decreased from 92.8° of the PVDF membrane to 61.2° of the nanocompostie membrane. Bovine serum albumin (BSA) static and dynamic adsorption experiments suggested that excellent antifouling properties of membranes was acquired after adding TiO

-PNIPAAm. The maximum BSA adsorption at 40 ℃ was about 3 times than that at 23 ℃. The permeation experiments indicated the water flux recover ratio and BSA rejection ratio were improved at different temperatures.

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Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO2 Nanoparticles

DOI：10.1007/s10118-014-1457-2

摘要

Abstract

关键词

Keywords

references

Thermo-responsive and Antifouling PVDF Nanocomposited Membranes Based on PNIPAAm Modified TiO₂ Nanoparticles