Journal
EUROPEAN POLYMER JOURNAL
Volume 44, Issue 10, Pages 3108-3115Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2008.07.020
Keywords
Organoclays; Natural rubber; Vulcanization kinetics; Nanocomposites
Categories
Funding
- CICyT
- MAT [2004-00825]
- Ministerio de Educacion y Ciencia
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Two quaternary phosphonium salts (aromatic and aliphatic) have been used as intercalants for Na-montmorillonite and the effect of intercalant structure on clay morphology and natural rubber vulcanization kinetics was investigated. Due to its lower rigid structure the aliphatic salt was easier to intercalate into the clay galleries giving rise to a higher interlayer distance and facilitating the rubber intercalation obtaining an exfoliated structure in the nanocomposite. The vulcanization process was sensibly accelerated by this organoclay and a higher crosslinking degree was observed in the nanocomposite which gave rise to materials with improved processing and physical characteristics. (c) 2008 Elsevier Ltd. All rights reserved.
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