Study on the thin film composite poly(piperazine-amide) nanofiltration membrane: Impacts of physicochemical properties of substrate on interfacial polymerization formation
Thiswork contributes to a better understanding of the correlation between the substrate membrane and the formation of poly(piperazine-amide). Factors affecting the properties of the poly(piperazine-amide) layer of the thin film composite (TFC) nanofiltration membranewere analyzed by studying the var...
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| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
Elsevier
2014
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| Subjects: | |
| Online Access: | http://www.elsevier.com/locate/desal http://www.elsevier.com/locate/desal http://eprints.uthm.edu.my/8158/1/dr_nurasyikin.pdf |
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| Summary: | Thiswork contributes to a better understanding of the correlation between the substrate membrane and the formation
of poly(piperazine-amide). Factors affecting the properties of the poly(piperazine-amide) layer of the
thin film composite (TFC) nanofiltration membranewere analyzed by studying the variation in the physicochemical
properties of the substrates made of three different polymer materials, i.e. polysulfone (PSf), polyethersulfone
(PES) and polyetherimide (PEI). The resulting substrates and TFC membranes were characterized by
FESEM, AFM, ATR-IR, XPS and contact angle goniometer. Results revealed that the physicochemical properties
of the resulting TFC membranes as well as their separation performances were altered with the use of substrate
of different properties. The flux of membrane decreased in the order of PEI-based TFC N PES-based TFC N PESbased
TFC, which coincide with the characteristics of each polyamide layer formed over the three different substrates.
Compared to PES-based TFC and PEI-based TFC membranes, it is found that the polyamide layer of PSfbased
TFC was more compact and more likely cross-linked which as a result led to lower water flux and higher
salt rejection as observed in filtration experiments. |
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