TY  - BOOK
AU  - Wang M J
AU  - Mahmud K
AU  - Murphy L J
AU  - Tu H
TI  - Carbon-silica dual phase filler, a new generation reinforcing agent for rubber.VIII. Surface characterisation by IGC
PB  - 156th ACS Rubber Division Meeting 1999. Conference preprints, Orlando 21st to 23rd Sep 1999.
KW  - Carbon-silica
KW  - Filler
KW  - IGC
KW  - Reinforcing agent
N1  - Source Year: 2000
N2  - The surface characteristics of carbon-silica dual phase filler (CSDPF) are investigated by means of inverse gas chromatography (IGC) at infinite dilution. It is found that due to its unique surface microstructure, the dispersive component of the surface energy of CSDPF is considerably higher than those of carbon black and silica. Among CSDPFs, the surface energies increase with increasing surface area. The adsorption energies of a series of hydrocarbon probes and polar compounds are also measured with IGC. Relative to conventional fillers, the higher adsorption energies of hydrocarbon probes and polar compounds on dual phase fillers as well as their higher surface energy suggest a stronger interaction with hydrocarbon polymers. This is consistent with observations on bound rubber measurement. The overall polarity of CSDPF and the specific or polar component of the surface energy of MPF are estimated from specific free energies of adsorption of polar compounds. The polarity of this new filler, while being similar to that of its carbon black counterpart, is substantially lower than the polarity of precipitated silica. This will result in a high compatibility of this dual phase filler with hydrocarbon rubber, leading to lower filler-filler interaction and better microdispersion
UR  - RAPRA
ER  -