Electrospun thermo-responsive nanofibers of poly(hydroxyethylacrylate-co-coumaryl acrylate-co-ethylmethacrylate)
DC Field | Value | Language |
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dc.contributor.author | Guo, Huangying | - |
dc.contributor.author | Jeong, Jae Hyun | - |
dc.contributor.author | Kim, Jin-Chul | - |
dc.date.available | 2018-05-09T02:37:59Z | - |
dc.date.created | 2018-04-17 | - |
dc.date.issued | 2016-04-20 | - |
dc.identifier.issn | 0927-7757 | - |
dc.identifier.uri | http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/7633 | - |
dc.description.abstract | Thermo-responsive nanofibers were prepared by electrospinning poly( hydroxylethylacrylate-cocoumaryl acrylate-co-ethylmethacrylate) (P(HEA-CA-EMA)) dissolved in methanol. P(HEA-CA-EMA)s were prepared by free radical reaction using the reaction mixture of which HEA/CA/EMA molar ratio was 98:0:2, 96:2:2, 95:2.5:2.5, 94:3:3, and 92:4:4. P(HEA-CA-EMA) solutions (30% (w/v), in HEPES buffer (30 mM, pH 7.4)) became gel after they were subjected to UV irradiation (254 nm, 6W) for 20h. P(HEA-CA-EMA) exhibited lower critical solution temperature (LCST) behavior in aqueous solution and the LCST decreased from about 40 degrees C to below 20 degrees C, when the content of hydrophobic monomers (CA and EMA) increased from 0.7% to 5.5%. By an electrospinning process, P(HEA-CA-EMA) solutions in methanol were micronized into beads when the copolymer concentration was relatively low (e.g., 30%), and they were spun into nanofibers when the concentration was 60-80%. The nanofibers were subjected to UV irradiation to cross-link the constituent copolymer chains. The release of CF (a hydrophilic dye) from UV-treated P(HEA-CA-EMA) nanofibers was suppressed below LCST and promoted above LCST. As long as the temperature of release medium was higher than LCST, the release degree at a given temperature was higher when the nanofiber was composed of a copolymer exhibiting lower LCST. As LCST decreases, the dehydration degree and the hydrophobicity of the copolymers at a given temperature will increase thus the thermodynamic activity of the hydrophilic dye in the nanofiber will also increase, giving a rise to a higher release degree. (C) 2016 Elsevier B.V. All rights reserved. | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.relation.isPartOf | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | - |
dc.subject | CRITICAL SOLUTION TEMPERATURE | - |
dc.subject | POLYMER NANOFIBERS | - |
dc.subject | OPTICAL-PROPERTIES | - |
dc.subject | FIBERS | - |
dc.subject | PHOTO | - |
dc.subject | NANOCOMPOSITES | - |
dc.subject | FABRICATION | - |
dc.subject | ACRYLATE) | - |
dc.subject | SCAFFOLDS | - |
dc.subject | LIPOSOMES | - |
dc.title | Electrospun thermo-responsive nanofibers of poly(hydroxyethylacrylate-co-coumaryl acrylate-co-ethylmethacrylate) | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.colsurfa.2016.01.046 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v.495, pp.1 - 10 | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000371395500001 | - |
dc.identifier.scopusid | 2-s2.0-84957089403 | - |
dc.citation.endPage | 10 | - |
dc.citation.startPage | 1 | - |
dc.citation.title | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | - |
dc.citation.volume | 495 | - |
dc.contributor.affiliatedAuthor | Jeong, Jae Hyun | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | LCST | - |
dc.subject.keywordAuthor | Electrospinning | - |
dc.subject.keywordAuthor | Nanofiber | - |
dc.subject.keywordAuthor | Photo cross-liking | - |
dc.subject.keywordAuthor | 5(6)-Carboxyfluorescein | - |
dc.subject.keywordAuthor | Temperature-controlled release | - |
dc.subject.keywordPlus | CRITICAL SOLUTION TEMPERATURE | - |
dc.subject.keywordPlus | POLYMER NANOFIBERS | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | FIBERS | - |
dc.subject.keywordPlus | PHOTO | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | ACRYLATE) | - |
dc.subject.keywordPlus | SCAFFOLDS | - |
dc.subject.keywordPlus | LIPOSOMES | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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