Cross-linked PVC/hyperbranched polyester composite hollow fiber membranes for dye removal

To prepare a new type of composite membrane with high flux and good dye removal performance, hyperbranched polyester (HPE) was selected as the reactive macromonomer and a cross-linked HPE skin layer was successfully formed on the PVC-UF membrane via one-step acteal reaction between HPE and glutarald...

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Bibliographic Details
Published in:Reactive & functional polymers 2018-01, Vol.122, p.51-59
Main Authors: Qiu, Ze-Lin, Kong, Xin, Yuan, Jia-Jia, Shen, Yu-Jie, Zhu, Bao-ku, Zhu, Li-Ping, Yao, Zhi-Kan, Tang, Chuyang Y.
Format: Article
Language:English
Subjects:
Azo dyes
Backwash
Backwashing
Composite materials
Crosslinking
Dye removal
Dyes
Flux
Glutaraldehyde
Heat treatment
Hollow fiber membrane
Hollow fiber membranes
Hyperbranched polyester
Macromonomer
Polyesters
Polyvinyl chloride
Rejection rate
Sunset
Zeta potential
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Summary:To prepare a new type of composite membrane with high flux and good dye removal performance, hyperbranched polyester (HPE) was selected as the reactive macromonomer and a cross-linked HPE skin layer was successfully formed on the PVC-UF membrane via one-step acteal reaction between HPE and glutaraldehyde (GA) from aqueous emulsion. The resultant membranes were characterized using ATR-FTIR, FESEM, surface zeta potential and CA, while the effects of GA concentration and heat treatment time on their performance were evaluated by permeate flux and rejection rate of sunset yellow (SY). The obtained HPE-M5 membrane exhibited a SY rejection rate of 96.4% and a permeate flux of 237.6Lm−2h−1 at 0.4MPa. Due to the good stability and the feasibility of backwashing treatment, the prepared composite hollow fiber membrane has a promising perspective of application in dye removal. •Cross-linked HPE skin layer was formed on the PVC-UF hollow fiber membrane via one-step acteal reaction.•The composite membrane with 3.0wt% GA and 2h heat treatment time possesses the optimal performance for dye removal.•The composite membrane presents good stability and feasibility of backwashing treatment.
ISSN:1381-5148
1873-166X
DOI:10.1016/j.reactfunctpolym.2017.10.012