Abstract
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 language | English (US) |
|---|---|
| Pages (from-to) | KK731-KK734 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 661 |
| State | Published - 2001 |
| Event | Filled and Nanocomposite Polymer Materials - Boston, MA, United States Duration: Nov 27 2000 → Nov 30 2000 |
Bibliographical note
Funding Information:The authors would like to thank Professor Eric Munson for his help with the NMR experiments, and Adel Halasa and Ken Hanley for helping with block copolymer synthesis. Funding for this study was provided by the NSF Center for Interfacial Engineering (CIE) and the Industrial Partnership for Research in Interfacial & Materials Engineering (I-PRIME).