Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김선정 | - |
dc.date.accessioned | 2018-07-06T04:25:03Z | - |
dc.date.available | 2018-07-06T04:25:03Z | - |
dc.date.issued | 2016-06 | - |
dc.identifier.citation | SMART MATERIALS AND STRUCTURES, v. 25, NO 7, Page. 1-7 | en_US |
dc.identifier.issn | 0964-1726 | - |
dc.identifier.issn | 1361-665X | - |
dc.identifier.uri | http://iopscience.iop.org/article/10.1088/0964-1726/25/7/075031/meta | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/72404 | - |
dc.description.abstract | Photomechanically irreversible tensile-actuated diacetylene-embedding nylon 6/6 microfibers were investigated. 10,12-pentacosadiynoic acid (PCDA) monomer, which have conventionally provided a visual color change by temperature and photo-driven stimuli, was embedded in nylon 6/6 microfibers by wet spinning. By ultraviolet (UV) (254 nm) exposure, we observed irreversible tensile actuation (contraction) of linear (untwisted) and helical (twisted) structural microfibers. The tensile contraction of twisted nylon 6/6-PCDA microfiber containing 10 mM PCDA was reached to similar to 2% at 60 degrees C. Such irreversible tensile contraction can be promoted by volume contraction of PCDA monomers during UV exposure along with irregular structural deformation containing gauche conformation with increasing temperature. The kinetics of tensile contraction with temperature and time were shown by the Arrhenius plots. The activation energies were 34.3-35.7 kJ mol(-1) as increasing the concentration of PCDA, implies that the nylon 6/6-PCDA microfibers could be applied to show time-temperature integrated device. | en_US |
dc.description.sponsorship | This work was supported by the Creative Research Initiative Center for Self-powered Actuation and the Korea-US Air Force Cooperation Program Grant No. 2013K1A3A1A32035592 in Korea. Support at the University of Texas at Dallas was provided by Air Force Office of Scientific Research grants FA9550-15-1-0089, and AOARD-FA2386-13-4119, NASA grants NNX14CS09P and NNX15CS05C, and the Robert A. Welch Foundation grant AT-0029. | en_US |
dc.language.iso | en | en_US |
dc.publisher | IOP PUBLISHING LTD | en_US |
dc.subject | diacetylene | en_US |
dc.subject | nylon | en_US |
dc.subject | actuation | en_US |
dc.subject | irreversible | en_US |
dc.subject | photoresponsive | en_US |
dc.title | Ultraviolet-induced irreversible tensile actuation of diacetylene/nylon microfibers | en_US |
dc.type | Article | en_US |
dc.relation.no | 7 | - |
dc.relation.volume | 25 | - |
dc.identifier.doi | 10.1088/0964-1726/25/7/075031 | - |
dc.relation.page | 1-7 | - |
dc.relation.journal | SMART MATERIALS AND STRUCTURES | - |
dc.contributor.googleauthor | Chun, Kyoung-Yong | - |
dc.contributor.googleauthor | Choi, Changsoon | - |
dc.contributor.googleauthor | Baughman, Ray H. | - |
dc.contributor.googleauthor | Kim, Seon Jeong | - |
dc.relation.code | 2016000325 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF ELECTRICAL AND BIOMEDICAL ENGINEERING | - |
dc.identifier.pid | sjk | - |
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