The influence of block copolymers on silica-filled polyisoprene

D. Gurovich, C. W. Macosko, M. Tirrell

Research output: Contribution to journalConference articlepeer-review


The influence of PDMS-polyisoprene diblock copolymers on the dynamic rheological properties of silica-filled uncured polyisoprene was investigated. Unlike binary silica-polyisoprene systems, the ternary systems in our study showed a decrease in low-amplitude dynamic storage modulus (G') with room-temperature storage time. This aging behaviour is accompanied by an increase in the concentration PDMS segments at the filler-polymer interface, as measured by solid-state 1H NMR. The decrease in G' is thus attributed to a progressive disruption of a filler-filler network by selective block copolymer adsorption onto the filler surface.

Original languageEnglish (US)
Pages (from-to)KK731-KK734
JournalMaterials Research Society Symposium - Proceedings
StatePublished - Jan 1 2001
EventFilled and Nanocomposite Polymer Materials - Boston, MA, United States
Duration: Nov 27 2000Nov 30 2000

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