Synthesis of Water Soluble Block Copolymer with Temperature and Chemical dual-stimuli Responsive and its Application in Renewable Heavy Metal ion Adsorbent

Reversible addition-fragmentation chain transfer (RAFT) polymerization was employed to synthesize a well defined block copolymer, Poly(2,4-dinitrobenzaldehyde acryloylhydrazone)-bN-isopropylacrylamide (PDAH-b-PNIPAM) comprising both thermosensitive block and chemical sensitive block, with specific m...

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Bibliographic Details
Published inJournal of polymer materials Vol. 34; no. 3; pp. 615 - 630
Main Authors Wang, Fenglian, Wang, Maoan, Song, Dan, Xu, Yin, Huang, Dinghai
Format Journal Article
LanguageEnglish
Published Henderson Tech Science Press 01.07.2017
Subjects
Acids
Addition polymerization
Adsorbents
Adsorption
Block copolymers
Chain transfer
Chelating agents
Chemical bonds
Chemical industry
Chemical synthesis
Ethanol
Heavy metals
Investigations
Isopropylacrylamide
Metal ions
Molecular weight distribution
Polymerization
Polymers
Recovering
Stimuli
Temperature
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Summary:Reversible addition-fragmentation chain transfer (RAFT) polymerization was employed to synthesize a well defined block copolymer, Poly(2,4-dinitrobenzaldehyde acryloylhydrazone)-bN-isopropylacrylamide (PDAH-b-PNIPAM) comprising both thermosensitive block and chemical sensitive block, with specific molecular weight and narrow molecular weight distribution. The thermal sensitive LCST temperature is slightly decrease with the increase of mole ratio of PDAH copolymer block. A detailed examination of the effect of contact time and the concentration of heavy metal ion Cd(II) on the adsorption characteristics was performed. The adsorbent with 10.1% mole ratio of PDAH copolymer block exhibits maximum adsorption capacity. The recovery and recycle investigation indicated that the dual-stimuli sensitive block copolymeric adsorbent showed very good renewability.
ISSN:0973-8622
0976-3449