Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites
The non-isothermal cure kinetics of polymer silicate layered nanocomposites based on a tri-functional epoxy resin has been investigated by differential scanning calorimetry. From an analysis of the kinetics as a function of the clay content, it can be concluded that the non-isothermal cure reaction...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2015-08-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0005971&mi=cd |
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| author | F. Shiravand J. M. Hutchinson Y. Calventus |
| author_facet | F. Shiravand J. M. Hutchinson Y. Calventus |
| author_sort | F. Shiravand |
| collection | DOAJ |
| description | The non-isothermal cure kinetics of polymer silicate layered nanocomposites based on a tri-functional epoxy resin has been investigated by differential scanning calorimetry. From an analysis of the kinetics as a function of the clay content, it can be concluded that the non-isothermal cure reaction can be considered to consist of four different processes: the reaction of epoxy groups with the diamine curing agent; an intra-gallery homopolymerisation reaction which occurs concurrently with the epoxy-amine reaction; and two extra-gallery homopolymerisation reactions, catalysed by the onium ion of the organically modified clay and by the tertiary amines resulting from the epoxy-amine reaction. The final nanostructure displays a similar quality of exfoliation as that observed for the isothermal cure of the same nanocomposite system. This implies that the intra-gallery reaction, which is responsible for the exfoliation, is not significantly inhibited by the extra-gallery epoxy-amine cross-linking reaction. |
| format | Article |
| id | doaj-art-712dd8779d9f45bcafc20b2153bb20e9 |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2015-08-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-712dd8779d9f45bcafc20b2153bb20e92025-08-20T02:52:34ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2015-08-019869570810.3144/expresspolymlett.2015.65Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocompositesF. ShiravandJ. M. HutchinsonY. CalventusThe non-isothermal cure kinetics of polymer silicate layered nanocomposites based on a tri-functional epoxy resin has been investigated by differential scanning calorimetry. From an analysis of the kinetics as a function of the clay content, it can be concluded that the non-isothermal cure reaction can be considered to consist of four different processes: the reaction of epoxy groups with the diamine curing agent; an intra-gallery homopolymerisation reaction which occurs concurrently with the epoxy-amine reaction; and two extra-gallery homopolymerisation reactions, catalysed by the onium ion of the organically modified clay and by the tertiary amines resulting from the epoxy-amine reaction. The final nanostructure displays a similar quality of exfoliation as that observed for the isothermal cure of the same nanocomposite system. This implies that the intra-gallery reaction, which is responsible for the exfoliation, is not significantly inhibited by the extra-gallery epoxy-amine cross-linking reaction.http://www.expresspolymlett.com/letolt.php?file=EPL-0005971&mi=cdNanocompositesThermosetting resinsThermal propertiesExfoliationEpoxy resin |
| spellingShingle | F. Shiravand J. M. Hutchinson Y. Calventus Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites eXPRESS Polymer Letters Nanocomposites Thermosetting resins Thermal properties Exfoliation Epoxy resin |
| title | Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites |
| title_full | Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites |
| title_fullStr | Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites |
| title_full_unstemmed | Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites |
| title_short | Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites |
| title_sort | non isothermal cure and exfoliation of tri functional epoxy clay nanocomposites |
| topic | Nanocomposites Thermosetting resins Thermal properties Exfoliation Epoxy resin |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0005971&mi=cd |
| work_keys_str_mv | AT fshiravand nonisothermalcureandexfoliationoftrifunctionalepoxyclaynanocomposites AT jmhutchinson nonisothermalcureandexfoliationoftrifunctionalepoxyclaynanocomposites AT ycalventus nonisothermalcureandexfoliationoftrifunctionalepoxyclaynanocomposites |