000			01943nam a2200217Ia 4500
008			220216s9999 xx 000 0 und d
100			_aWang M J
245		0	_aCarbon-silica dual phase filler, a new generation reinforcing agent for rubber.VIII. Surface characterisation by IGC
260			_b156th ACS Rubber Division Meeting 1999. Conference preprints, Orlando 21st to 23rd Sep 1999.
500			_aSource Year: 2000
520			_aThe 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.
650			_aCarbon-silica
650			_aFiller
650			_aIGC
650			_aReinforcing agent
700			_aMahmud K
700			_aMurphy L J
700			_aTu H
856			_uRAPRA
942			_cJS
999			_c55201 _d55201