Viscoelastic and self-healing behavior of silica filled ionically modified poly(isobutylene-co-isoprene) rubber.

ABSTRACT: Rubber composites were prepared by mixing bromobutyl rubber (BIIR) with silica particles in the presence of 1-butylimidazole. In addition to pristine (precipitated) silica, silanized particles with aliphatic or imidazolium functional groups, respectively, were used as filler. The silanization was carried out either separately or in situ during compounding. The silanized particles were characterized by TGA, ¹H-²⁹Si cross polarization (CP)/MAS NMR, and Zeta potential measurements. During compounding, the bromine groups of BIIR were converted with 1-butylimidazole to ionic imidazolium groups which formed a dynamic network by ionic association. Based on DMA temperature and strain sweep measurements as well as cyclic tensile tests and stress-strain measurements it c

SUBMITTER: Sallat A 

PROVIDER: S-EPMC9083126 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature