Abstract
Novel thermo-sensitive membranes were prepared by photo-grafting N,N-diethylacrylamide (DEAAm) onto the microfiltration membranes of Nylon with benzophenone (BP) as an initiator. Grafted membranes with a wide range of grafting yield were obtained through varying the grafting conditions, including UV intensity, the irradiation time and the mole ratio of initiator. The existence of the grafted layers of poly(N,N-diethylacrylamide) (PDEAAm) was confirmed by ATR-FTIR and XPS measurements. The SEM images indicated that the grafted polymers existed mainly on the top surface and inside the pores rather than on the backside. The water flow rate of the membranes with the appropriate grafting yield increased sharply with increasing temperature to the range of 30-35 °C near the lower critical solution temperature (LCST), which revealed the performance of the thermo-sensitivity after grafting modification. The influence of grafting yield on the filtration property of the membranes was also investigated. The grafted PDEAAm chains existed on the expanded configuration and extended out of the surface of the membranes when dried below the LCST while shrunk to the membrane surface above the LCST, which was measured by AFM.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 13-20 |
| Number of pages | 8 |
| Journal | Journal of Membrane Science |
| Volume | 283 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Oct 20 2006 |
| Externally published | Yes |
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Keywords
- Microfiltration membranes of Nylon
- N,N-Diethylacrylamide
- Photo-grafting
- Thermo-sensitive performance
- Water flow rate
ASJC Scopus subject areas
- Filtration and Separation
- Polymers and Plastics
Cite this
Novel thermo-sensitive membranes prepared by rapid bulk photo-grafting polymerization of N,N-diethylacrylamide onto the microfiltration membranes Nylon. / Wu, Guangguo; Li, Yuanpei; Han, Mei; Liu, Xiaoxuan.
In: Journal of Membrane Science, Vol. 283, No. 1-2, 20.10.2006, p. 13-20.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Novel thermo-sensitive membranes prepared by rapid bulk photo-grafting polymerization of N,N-diethylacrylamide onto the microfiltration membranes Nylon
AU - Wu, Guangguo
AU - Li, Yuanpei
AU - Han, Mei
AU - Liu, Xiaoxuan
PY - 2006/10/20
Y1 - 2006/10/20
N2 - Novel thermo-sensitive membranes were prepared by photo-grafting N,N-diethylacrylamide (DEAAm) onto the microfiltration membranes of Nylon with benzophenone (BP) as an initiator. Grafted membranes with a wide range of grafting yield were obtained through varying the grafting conditions, including UV intensity, the irradiation time and the mole ratio of initiator. The existence of the grafted layers of poly(N,N-diethylacrylamide) (PDEAAm) was confirmed by ATR-FTIR and XPS measurements. The SEM images indicated that the grafted polymers existed mainly on the top surface and inside the pores rather than on the backside. The water flow rate of the membranes with the appropriate grafting yield increased sharply with increasing temperature to the range of 30-35 °C near the lower critical solution temperature (LCST), which revealed the performance of the thermo-sensitivity after grafting modification. The influence of grafting yield on the filtration property of the membranes was also investigated. The grafted PDEAAm chains existed on the expanded configuration and extended out of the surface of the membranes when dried below the LCST while shrunk to the membrane surface above the LCST, which was measured by AFM.
AB - Novel thermo-sensitive membranes were prepared by photo-grafting N,N-diethylacrylamide (DEAAm) onto the microfiltration membranes of Nylon with benzophenone (BP) as an initiator. Grafted membranes with a wide range of grafting yield were obtained through varying the grafting conditions, including UV intensity, the irradiation time and the mole ratio of initiator. The existence of the grafted layers of poly(N,N-diethylacrylamide) (PDEAAm) was confirmed by ATR-FTIR and XPS measurements. The SEM images indicated that the grafted polymers existed mainly on the top surface and inside the pores rather than on the backside. The water flow rate of the membranes with the appropriate grafting yield increased sharply with increasing temperature to the range of 30-35 °C near the lower critical solution temperature (LCST), which revealed the performance of the thermo-sensitivity after grafting modification. The influence of grafting yield on the filtration property of the membranes was also investigated. The grafted PDEAAm chains existed on the expanded configuration and extended out of the surface of the membranes when dried below the LCST while shrunk to the membrane surface above the LCST, which was measured by AFM.
KW - Microfiltration membranes of Nylon
KW - N,N-Diethylacrylamide
KW - Photo-grafting
KW - Thermo-sensitive performance
KW - Water flow rate
UR - http://www.scopus.com/inward/record.url?scp=33747879022&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33747879022&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2006.05.017
DO - 10.1016/j.memsci.2006.05.017
M3 - Article
AN - SCOPUS:33747879022
VL - 283
SP - 13
EP - 20
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
IS - 1-2
ER -