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In situ high-pressure vulcanization and thermal properties of polyisoprene
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
2006 (English)In: High Pressure Research vol. 26: Proceedings of the 44th Meeting of the European High Pressure Research Group, Prague 2006, Taylor & Francis , 2006, 415-419 p.Conference paper, Published paper (Refereed)
Abstract [en]

Liquid cis-1,4-poly(isoprene) (PI) has been vulcanized under high pressures without using additives. Moreover, the thermal conductivity and heat capacity per unit volume of both unvulcanized (liquid state at room temperature) and vulcanized (rubbery state) PI have been measured, and found to be the same in both states. However, the relaxation behavior associated with the glass transition differs. The unvulcanized PI exhibits two clearly resolved relaxation processes near the glass transition whereas these tend to combine into one process in the vulcanized PI. Moreover, at the same pressure temperature co-ordinate, the relaxation time of the vulcanized sample (1 s at 220 K at atmospheric pressure) is longer than that of the unvulcanized sample.

Place, publisher, year, edition, pages
Taylor & Francis , 2006. 415-419 p.
Keyword [en]
pressure, vulcanization, thermal conductivity, heat capacity, glass transition
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-12000DOI: 10.1080/08957950601101852OAI: oai:DiVA.org:umu-12000DiVA: diva2:151671
Conference
44th Meeting of the European High Pressure Research Group, Prague 4-8 september 2006
Note
High Pressure Research: Volume 26, Issue 4, 2006.Available from: 2007-03-18 Created: 2007-03-18 Last updated: 2011-10-28Bibliographically approved

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Tonpheng, BounphanhAndersson, Ove
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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
  • html
  • text
  • asciidoc
  • rtf