Technical Paper Archive


This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.


For older papers not listed here, please send your request, including Meeting Year, Title, Author, and Paper # to: cbrady@rubber.org


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Sub-micrometer TPVs based on crosslinking-induced phase separation of polycaprolactone/oligoetherdimethacrylate blends

169

Event: 176th Technical Meeting
Location: Pittsburgh, PA
Date: October 13, 2009
Author: Martin Van Duin,* Roy l'Abee, Han Goossens and Marloes Verbruggen
Paper Number: 169

Price: $20.00

  • Reaction-induced phase separation (RIPS) of initially miscible mixtures of poly(8- caprolactone) (PCL) and elastomer precursors based on difunctional methacrylate resins was applied to prepare thermoplastic vulcanizates (TPVs) with rubber particle sizes ranging from 80 to 900 nm. The radicals formed by the peroxide decomposition initiate the formation of a crosslinked rubber network with gel contents exceeding 90 %, but also abstract hydrogen atoms from the aliphatic moieties in PCL. This leads to the formation of PCL-grafted rubber particles, which show a high nucleating efficiency for crystallization of the PCL matrix. It is demonstrated that the tensile and elastic properties of these TPVs are determined by a complex interplay of the morphology, the type of elastomer precursor, the extent of PCL grafting, the crystallinity and the lamellar thickness. The materials showed a rheological behavior that is typical for TPVs, for which the melt changes from an elastic to a viscous behavior above a critical stress.

    Papers from 176th Technical Meeting

    Items from 176th Technical Meeting