Comparison of gel swelling under organic vapor and in organic solvent
A Fast Transient Fluorescence Technique (FTRF) was employed for studying swelling of disc shaped poly (methyl methacrylate) (PMMA) gels, which were prepared by free radical copolymerization of methyl (methacrylate) (MMA) using various ethylene glycol dimethacrylate (EGDM) contents at 60 ∘C. Pyrene (...
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| Format: | Article |
| Language: | English |
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Wiley
2005-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/S1110662X05000061 |
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| _version_ | 1850228449525891072 |
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| author | M. Erdoğan Ö. Pekcan |
| author_facet | M. Erdoğan Ö. Pekcan |
| author_sort | M. Erdoğan |
| collection | DOAJ |
| description | A Fast Transient Fluorescence Technique (FTRF) was employed for studying swelling of disc
shaped poly (methyl methacrylate) (PMMA) gels, which were prepared by free radical copolymerization of
methyl (methacrylate) (MMA) using various ethylene glycol dimethacrylate (EGDM) contents at 60 ∘C. Pyrene (P) was introduced as a fluorescence probe during polymerization. Swelling experiments were performed
by using P doped PMMA gels under chloroform vapor and in chloroform at room temperature. P lifetimes
in and out of the gel were measured from fluorescence decay traces during in-situ swelling experiments.
It was observed that P lifetimes in the gel decreased as swelling proceeds. An equation is derived for low
quenching efficiencies to interpret the behavior of P lifetimes during swelling. The Li-Tanaka equation was
used to determine the cooperative, Dc diffusion coefficients for the gels made at various crosslinker contents.
It is observed that Dc values decrease as the crosslinker content is increased both in chloroform vapor and
in chloroform. |
| format | Article |
| id | doaj-art-2b93533ea4a242e28ef2a8422f64c555 |
| institution | OA Journals |
| issn | 1110-662X |
| language | English |
| publishDate | 2005-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-2b93533ea4a242e28ef2a8422f64c5552025-08-20T02:04:31ZengWileyInternational Journal of Photoenergy1110-662X2005-01-0171374310.1155/S1110662X05000061Comparison of gel swelling under organic vapor and in organic solventM. Erdoğan0Ö. Pekcan1Department of Physics, Balikesir University, Balikesir 10100, TurkeyDepartment of Physics, Istanbul Technical University, Maslak, Istanbul 80626, TurkeyA Fast Transient Fluorescence Technique (FTRF) was employed for studying swelling of disc shaped poly (methyl methacrylate) (PMMA) gels, which were prepared by free radical copolymerization of methyl (methacrylate) (MMA) using various ethylene glycol dimethacrylate (EGDM) contents at 60 ∘C. Pyrene (P) was introduced as a fluorescence probe during polymerization. Swelling experiments were performed by using P doped PMMA gels under chloroform vapor and in chloroform at room temperature. P lifetimes in and out of the gel were measured from fluorescence decay traces during in-situ swelling experiments. It was observed that P lifetimes in the gel decreased as swelling proceeds. An equation is derived for low quenching efficiencies to interpret the behavior of P lifetimes during swelling. The Li-Tanaka equation was used to determine the cooperative, Dc diffusion coefficients for the gels made at various crosslinker contents. It is observed that Dc values decrease as the crosslinker content is increased both in chloroform vapor and in chloroform.http://dx.doi.org/10.1155/S1110662X05000061 |
| spellingShingle | M. Erdoğan Ö. Pekcan Comparison of gel swelling under organic vapor and in organic solvent International Journal of Photoenergy |
| title | Comparison of gel swelling under organic vapor and in organic solvent |
| title_full | Comparison of gel swelling under organic vapor and in organic solvent |
| title_fullStr | Comparison of gel swelling under organic vapor and in organic solvent |
| title_full_unstemmed | Comparison of gel swelling under organic vapor and in organic solvent |
| title_short | Comparison of gel swelling under organic vapor and in organic solvent |
| title_sort | comparison of gel swelling under organic vapor and in organic solvent |
| url | http://dx.doi.org/10.1155/S1110662X05000061 |
| work_keys_str_mv | AT merdogan comparisonofgelswellingunderorganicvaporandinorganicsolvent AT opekcan comparisonofgelswellingunderorganicvaporandinorganicsolvent |