Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups
The present contribution reports the electrospinning of PS/MEH-PPV fibers with average diameters ranging from 0.165 to 1.190 μm from solutions of PS/MEH-PPV (PS/MEH-PPV = 7.5:1, w/w) in 1,2-dichloroethane. With the addition of pyridinium formate (PF), a volatile organic salt, to the PS/MEH-PPV solut...
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th-mahidol.246082018-08-24T08:55:48Z Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups Surawut Chuangchote Toemsak Srikhirin Pitt Supaphol Chulalongkorn University Mahidol University Materials Science The present contribution reports the electrospinning of PS/MEH-PPV fibers with average diameters ranging from 0.165 to 1.190 μm from solutions of PS/MEH-PPV (PS/MEH-PPV = 7.5:1, w/w) in 1,2-dichloroethane. With the addition of pyridinium formate (PF), a volatile organic salt, to the PS/MEH-PPV solution, the electrospinnability of the resulting solution is enhanced significantly. Both the fiber diameters and the number of fibers are found to increase, while the number of beads is found to decrease with increasing applied electrical potential, the addition of PF, and increasing aging period of the spinning solution after PF addition. FT-IR analysis shows that ≈15% of the MEH side groups are removed from the MEH-PPV component in the fibers obtained from the solution that is left to age for 1 month after PF addition, which corresponds well to the loss of mass of ≈7% as observed by thermogravimetric analysis. As a result, partial decomposition of the MEH side groups should be responsible for the observed yellow emission color of the PS/MEH-PPV fibers obtained from the same solution. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA. 2018-08-24T01:55:48Z 2018-08-24T01:55:48Z 2007-03-01 Article Macromolecular Rapid Communications. Vol.28, No.5 (2007), 651-659 10.1002/marc.200600769 15213927 10221336 2-s2.0-34547881106 https://repository.li.mahidol.ac.th/handle/123456789/24608 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34547881106&origin=inward |
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Materials Science Surawut Chuangchote Toemsak Srikhirin Pitt Supaphol Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups |
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The present contribution reports the electrospinning of PS/MEH-PPV fibers with average diameters ranging from 0.165 to 1.190 μm from solutions of PS/MEH-PPV (PS/MEH-PPV = 7.5:1, w/w) in 1,2-dichloroethane. With the addition of pyridinium formate (PF), a volatile organic salt, to the PS/MEH-PPV solution, the electrospinnability of the resulting solution is enhanced significantly. Both the fiber diameters and the number of fibers are found to increase, while the number of beads is found to decrease with increasing applied electrical potential, the addition of PF, and increasing aging period of the spinning solution after PF addition. FT-IR analysis shows that ≈15% of the MEH side groups are removed from the MEH-PPV component in the fibers obtained from the solution that is left to age for 1 month after PF addition, which corresponds well to the loss of mass of ≈7% as observed by thermogravimetric analysis. As a result, partial decomposition of the MEH side groups should be responsible for the observed yellow emission color of the PS/MEH-PPV fibers obtained from the same solution. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA. |
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Chulalongkorn University |
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Chulalongkorn University Surawut Chuangchote Toemsak Srikhirin Pitt Supaphol |
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Surawut Chuangchote Toemsak Srikhirin Pitt Supaphol |
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Surawut Chuangchote |
title |
Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups |
title_short |
Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups |
title_full |
Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups |
title_fullStr |
Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups |
title_full_unstemmed |
Color change of electrospun polystyrene/ MEH-PPV fibers from orange to yellow through partial decomposition of MEH side groups |
title_sort |
color change of electrospun polystyrene/ meh-ppv fibers from orange to yellow through partial decomposition of meh side groups |
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2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/24608 |
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1763488912277241856 |