Abstract
We report a fabrication method of polyamide (PA) thin film composite reverse osmosis membranes, so-called support-free interfacial polymerization (SFIP). In contrast to conventional interfacial polymerization (IP) where a PA layer is formed in-situ on top of a support, in this SFIP method the PA layer is first formed at the interface without a support, followed by attachment onto a support. Enhancing the chemical adhesion between the PA layer and a polyacrylonitrile support through the chemical modification on the support leads to the fabrication of defect-free membranes which outperform the conventional IP-assembled membranes. Importantly, SFIP allows for the precise characterization of the PA layer and the PA-support interface by easily isolating each membrane component. SFIP produces a thinner and smoother PA structure with a more wettable and less negatively charged surface than its IP-assembled counterparts, presumably due to uniform and promoted amine diffusion during film formation. Furthermore, it was found that the bottom surface of the SFIP-assembled PA has a porous structure with higher hydrophilicity and a marginally lower negative charge than its opposite surface. The SFIP method provides a versatile platform to study the fundamental membrane structure-performance relationship and to develop high performance membranes.
| Original language | English |
|---|---|
| Pages (from-to) | 52-59 |
| Number of pages | 8 |
| Journal | Journal of Membrane Science |
| Volume | 526 |
| DOIs | |
| Publication status | Published - 2017 Mar 15 |
Fingerprint
Keywords
- Desalination
- Interfacial adhesion
- Polyamide thin film composite membrane
- Reverse osmosis
- Support-free interfacial polymerization
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
Fabrication of polyamide thin film composite reverse osmosis membranes via support-free interfacial polymerization. / Park, Sung Joon; Choi, Wansuk; Nam, Seung Eun; Hong, Seungkwan; Lee, Jong Suk; Lee, Jung-hyun.
In: Journal of Membrane Science, Vol. 526, 15.03.2017, p. 52-59.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of polyamide thin film composite reverse osmosis membranes via support-free interfacial polymerization
AU - Park, Sung Joon
AU - Choi, Wansuk
AU - Nam, Seung Eun
AU - Hong, Seungkwan
AU - Lee, Jong Suk
AU - Lee, Jung-hyun
PY - 2017/3/15
Y1 - 2017/3/15
N2 - We report a fabrication method of polyamide (PA) thin film composite reverse osmosis membranes, so-called support-free interfacial polymerization (SFIP). In contrast to conventional interfacial polymerization (IP) where a PA layer is formed in-situ on top of a support, in this SFIP method the PA layer is first formed at the interface without a support, followed by attachment onto a support. Enhancing the chemical adhesion between the PA layer and a polyacrylonitrile support through the chemical modification on the support leads to the fabrication of defect-free membranes which outperform the conventional IP-assembled membranes. Importantly, SFIP allows for the precise characterization of the PA layer and the PA-support interface by easily isolating each membrane component. SFIP produces a thinner and smoother PA structure with a more wettable and less negatively charged surface than its IP-assembled counterparts, presumably due to uniform and promoted amine diffusion during film formation. Furthermore, it was found that the bottom surface of the SFIP-assembled PA has a porous structure with higher hydrophilicity and a marginally lower negative charge than its opposite surface. The SFIP method provides a versatile platform to study the fundamental membrane structure-performance relationship and to develop high performance membranes.
AB - We report a fabrication method of polyamide (PA) thin film composite reverse osmosis membranes, so-called support-free interfacial polymerization (SFIP). In contrast to conventional interfacial polymerization (IP) where a PA layer is formed in-situ on top of a support, in this SFIP method the PA layer is first formed at the interface without a support, followed by attachment onto a support. Enhancing the chemical adhesion between the PA layer and a polyacrylonitrile support through the chemical modification on the support leads to the fabrication of defect-free membranes which outperform the conventional IP-assembled membranes. Importantly, SFIP allows for the precise characterization of the PA layer and the PA-support interface by easily isolating each membrane component. SFIP produces a thinner and smoother PA structure with a more wettable and less negatively charged surface than its IP-assembled counterparts, presumably due to uniform and promoted amine diffusion during film formation. Furthermore, it was found that the bottom surface of the SFIP-assembled PA has a porous structure with higher hydrophilicity and a marginally lower negative charge than its opposite surface. The SFIP method provides a versatile platform to study the fundamental membrane structure-performance relationship and to develop high performance membranes.
KW - Desalination
KW - Interfacial adhesion
KW - Polyamide thin film composite membrane
KW - Reverse osmosis
KW - Support-free interfacial polymerization
UR - http://www.scopus.com/inward/record.url?scp=85006713540&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006713540&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2016.12.027
DO - 10.1016/j.memsci.2016.12.027
M3 - Article
AN - SCOPUS:85006713540
VL - 526
SP - 52
EP - 59
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -