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Article: Effect of block order of ABA- and BAB-type NIPAAm/HEMA triblock copolymers on thermoresponsive behavior of solutions

TitleEffect of block order of ABA- and BAB-type NIPAAm/HEMA triblock copolymers on thermoresponsive behavior of solutions
Authors
KeywordsAtom transfer radical polymerization (ATRP)
Phase behavior
Phase transition
Thermoresponsive
Triblock copolymer
Issue Date2007
PublisherWiley - V C H Verlag GmbH & Co KGaA.
Citation
Macromolecular Chemistry And Physics, 2007, v. 208 n. 16, p. 1773-1781 How to Cite?
AbstractABA and BAB triblock thermoresponsive copolymers (A = N- isopropylacrylamide, B = 2-hydroxyethyl methacrylate) have been synthesized by atom transfer radical polymerization (ATRP). BAB is shown to exhibit a higher transition temperature and a good solubility in water compared to ABA with the same composition and concentration. The differences are attributed to the distinct micellar structure, which is regulated by the block order of the copolymers. It is speculated that ABA and BAB copolymers separately form branch and flower micelles in water, which mainly influence the course of phase transition. The moduli of the ABA copolymer solution are higher than those of the BAB above gel point. In terms of hypothesized micelle models, it is proposed that the 'branch' micelles of the ABA solution preferably form more physical interconnections. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
Persistent Identifierhttp://hdl.handle.net/10722/79583
ISSN
2015 Impact Factor: 2.495
2015 SCImago Journal Rankings: 0.955
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhao, Xen_HK
dc.contributor.authorLiu, Wen_HK
dc.contributor.authorChen, Den_HK
dc.contributor.authorLin, Xen_HK
dc.contributor.authorLu, WWen_HK
dc.date.accessioned2010-09-06T07:56:18Z-
dc.date.available2010-09-06T07:56:18Z-
dc.date.issued2007en_HK
dc.identifier.citationMacromolecular Chemistry And Physics, 2007, v. 208 n. 16, p. 1773-1781en_HK
dc.identifier.issn1022-1352en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79583-
dc.description.abstractABA and BAB triblock thermoresponsive copolymers (A = N- isopropylacrylamide, B = 2-hydroxyethyl methacrylate) have been synthesized by atom transfer radical polymerization (ATRP). BAB is shown to exhibit a higher transition temperature and a good solubility in water compared to ABA with the same composition and concentration. The differences are attributed to the distinct micellar structure, which is regulated by the block order of the copolymers. It is speculated that ABA and BAB copolymers separately form branch and flower micelles in water, which mainly influence the course of phase transition. The moduli of the ABA copolymer solution are higher than those of the BAB above gel point. In terms of hypothesized micelle models, it is proposed that the 'branch' micelles of the ABA solution preferably form more physical interconnections. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA.en_HK
dc.relation.ispartofMacromolecular Chemistry and Physicsen_HK
dc.subjectAtom transfer radical polymerization (ATRP)en_HK
dc.subjectPhase behavioren_HK
dc.subjectPhase transitionen_HK
dc.subjectThermoresponsiveen_HK
dc.subjectTriblock copolymeren_HK
dc.titleEffect of block order of ABA- and BAB-type NIPAAm/HEMA triblock copolymers on thermoresponsive behavior of solutionsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1022-1352&volume=208&spage=1773&epage=1781&date=2007&atitle=Effect+of+Block+Order+of+ABA-+and+BAB-Type+NIPAAm/HEMA+Triblock+Copolymers+on+Thermoresponsive+Behavior+of+Solutionsen_HK
dc.identifier.emailLu, WW:wwlu@hku.hken_HK
dc.identifier.authorityLu, WW=rp00411en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/macp.200700155en_HK
dc.identifier.scopuseid_2-s2.0-34548233209en_HK
dc.identifier.hkuros136587en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548233209&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume208en_HK
dc.identifier.issue16en_HK
dc.identifier.spage1773en_HK
dc.identifier.epage1781en_HK
dc.identifier.isiWOS:000249050000007-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridZhao, X=8599534100en_HK
dc.identifier.scopusauthoridLiu, W=7408473555en_HK
dc.identifier.scopusauthoridChen, D=7405453590en_HK
dc.identifier.scopusauthoridLin, X=15757782200en_HK
dc.identifier.scopusauthoridLu, WW=7404215221en_HK

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