Reverse osmosis performance of homopolymers and copolymers of poly(amide-sulfonamide)s

Wing Hong Chan; Suei Yee Lam-Leung; Ching Fai Ng; Shiping Xi; Junqi Ding; Xumin He

doi:10.1016/S0032-3861(96)00472-7

Reverse osmosis performance of homopolymers and copolymers of poly(amide-sulfonamide)s

Wing Hong Chan^*, Suei Yee Lam-Leung, Ching Fai Ng, Shiping Xi, Junqi Ding, Xumin He

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

8 Citations (Scopus)

Abstract

Ten homopolymers and 15 copolymers of poly(amide-sulfonamide)s were synthesized by low-temperature solution polycondensation of five different diamines with isophthalopyl chloride/terephthaloyl chloride in N,N-dimethylacetamide. The general reverse osmosis (RO) performance of these new membrane materials were investigated by a systematic screening test with 270 ppm nickel ion industrial waste as the feed solution. A copolymer series based on 2,5-dimethylpiperazine, 1,3-diaminopropane and terephthaloyl chloride emerged as the best polymer system in terms of RO separation characteristics. Optimization of membrane fabrication of one of this series, with a 7:3 ratio of the two diamines was carried out by fixing the evaporation temperature at 65°C and varying the evaporation time and casting solution composition. The RO tests for the membrane were performed at 20 kg cm^-2 operating pressure on three different feed solutions. Membranes showed salt rejection of up to 98.6 and 94.3% at a flux of 13 cm per day for nickel and sodium ion feeds, respectively.

Original language	English
Pages (from-to)	99-103
Number of pages	5
Journal	Polymer
Volume	38
Issue number	1
DOIs	https://doi.org/10.1016/S0032-3861(96)00472-7
Publication status	Published - Jan 1997

Scopus Subject Areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

User-Defined Keywords

Membrane materials
Poly(amide-sulfonamide)s
Reverse osmosis

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10.1016/S0032-3861(96)00472-7

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title = "Reverse osmosis performance of homopolymers and copolymers of poly(amide-sulfonamide)s",

abstract = "Ten homopolymers and 15 copolymers of poly(amide-sulfonamide)s were synthesized by low-temperature solution polycondensation of five different diamines with isophthalopyl chloride/terephthaloyl chloride in N,N-dimethylacetamide. The general reverse osmosis (RO) performance of these new membrane materials were investigated by a systematic screening test with 270 ppm nickel ion industrial waste as the feed solution. A copolymer series based on 2,5-dimethylpiperazine, 1,3-diaminopropane and terephthaloyl chloride emerged as the best polymer system in terms of RO separation characteristics. Optimization of membrane fabrication of one of this series, with a 7:3 ratio of the two diamines was carried out by fixing the evaporation temperature at 65°C and varying the evaporation time and casting solution composition. The RO tests for the membrane were performed at 20 kg cm-2 operating pressure on three different feed solutions. Membranes showed salt rejection of up to 98.6 and 94.3% at a flux of 13 cm per day for nickel and sodium ion feeds, respectively.",

keywords = "Membrane materials, Poly(amide-sulfonamide)s, Reverse osmosis",

author = "Chan, {Wing Hong} and Lam-Leung, {Suei Yee} and Ng, {Ching Fai} and Shiping Xi and Junqi Ding and Xumin He",

note = "Funding Information: Financial support (RGC/92-93/18)f rom the Research Grant Council of UniversityG rant Committeeis gratefully acknowledgedW. ai-Kwan Yeung participatedi n this project in the capacityo f a final year undergraduate researchs tudent.",

year = "1997",

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doi = "10.1016/S0032-3861(96)00472-7",

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AU - Chan, Wing Hong

AU - Lam-Leung, Suei Yee

AU - Ng, Ching Fai

AU - Xi, Shiping

AU - Ding, Junqi

AU - He, Xumin

N1 - Funding Information: Financial support (RGC/92-93/18)f rom the Research Grant Council of UniversityG rant Committeeis gratefully acknowledgedW. ai-Kwan Yeung participatedi n this project in the capacityo f a final year undergraduate researchs tudent.

PY - 1997/1

Y1 - 1997/1

N2 - Ten homopolymers and 15 copolymers of poly(amide-sulfonamide)s were synthesized by low-temperature solution polycondensation of five different diamines with isophthalopyl chloride/terephthaloyl chloride in N,N-dimethylacetamide. The general reverse osmosis (RO) performance of these new membrane materials were investigated by a systematic screening test with 270 ppm nickel ion industrial waste as the feed solution. A copolymer series based on 2,5-dimethylpiperazine, 1,3-diaminopropane and terephthaloyl chloride emerged as the best polymer system in terms of RO separation characteristics. Optimization of membrane fabrication of one of this series, with a 7:3 ratio of the two diamines was carried out by fixing the evaporation temperature at 65°C and varying the evaporation time and casting solution composition. The RO tests for the membrane were performed at 20 kg cm-2 operating pressure on three different feed solutions. Membranes showed salt rejection of up to 98.6 and 94.3% at a flux of 13 cm per day for nickel and sodium ion feeds, respectively.

AB - Ten homopolymers and 15 copolymers of poly(amide-sulfonamide)s were synthesized by low-temperature solution polycondensation of five different diamines with isophthalopyl chloride/terephthaloyl chloride in N,N-dimethylacetamide. The general reverse osmosis (RO) performance of these new membrane materials were investigated by a systematic screening test with 270 ppm nickel ion industrial waste as the feed solution. A copolymer series based on 2,5-dimethylpiperazine, 1,3-diaminopropane and terephthaloyl chloride emerged as the best polymer system in terms of RO separation characteristics. Optimization of membrane fabrication of one of this series, with a 7:3 ratio of the two diamines was carried out by fixing the evaporation temperature at 65°C and varying the evaporation time and casting solution composition. The RO tests for the membrane were performed at 20 kg cm-2 operating pressure on three different feed solutions. Membranes showed salt rejection of up to 98.6 and 94.3% at a flux of 13 cm per day for nickel and sodium ion feeds, respectively.

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Reverse osmosis performance of homopolymers and copolymers of poly(amide-sulfonamide)s

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