Authors Das, A. ; Mahaling, R. N. ; Stöckelhuber, K.W. ; Heinrich, G.
Title Reinforcement and migration of nanoclay in polychloroprene/ethylene-propylene-diene-monomer rubber blends
Date 10.01.2011
Number 19982
Abstract This communication demonstrates, an approach of compatibilization between polychloroprene (CR) and ethylene propylene diene monomer rubber (EPDM) by using nanoclay as a compatibilizer and, simultaneously, as a very strong reinforcing nano-filler. With the incorporation of less than 9 wt.% nanoclay, the dynamic storage modulus above the glass transition region of such a blend increases from not, vert, similar2 MPa to not, vert, similar54 MPa. This tremendous reinforcing as well as the compatibilization effect of the nanoclay was understood by thermodynamically driven preferential framework-like accumulation of exfoliated nanoclay platelets in the phase border of CR and EPDM, as observed i.e. from transmission electron microscopy. The extra-ordinary improvement of dynamic modulus can also be understood by a very strong filler–filler networking that we observed in strain sweep experiments. Moreover, we found that the compatibilized blends exhibit an extra dynamic-mechanical relaxation process at higher temperatures (not, vert, similarTg + 130 K). The suggested method for compatibilization of incompatible rubber blends offers routes to the design of new rubber based technical products for diversified applications.
Publisher Composites Science and Technology
Citation Composites Science and Technology 71 (2011) 276-281

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