000			01667nam a2200193Ia 4500
008			220216s9999 xx 000 0 und d
100			_aKaewsakul W _cet al
245		0	_aVerification of interactions between silica and epoxidised squalene as a model for epoxidised natural rubber
260			_bJournal of Rubber Research _c2014
300			_a129-142
500			_aSource Year: 2014
520			_aUnmodified squalene (Sq) and epoxidised squalene (ESq), as models for natural rubber and epoxidised natural rubber, were mixed with silica in a reactor at 140-145 degree C, which corresponds to the optimal mixing dump temperature of silica-filled natural rubber or epoxidised natural rubber compounds. The mixtures were prepared with and without bis-(triethoxysilylpropyl) tetrasulphide (TESPT) silane coupling agent. The bound silica in the mixtures was extracted and checked for its composition by using Fourier-transform infrared (FTIR) spectroscopy. The results indicate that Sq and ESq with the help of TESPT can chemically link to the silica surface, as the FTIR spectra of purified bound silicas show absorption peaks of hydrocarbon structures. The epoxidised squalene also produces chemical interaction with silica in the absence of TESPT, but to a lesser extent compared to the one with TESPT, as indicated by the absorption intensity. On the other hand, the silica in the Sq mixture without TESPT shows no trace of hydrocarbon, indicating that there is no noticeable chemical interaction involved.
650			_aEpoxidised natural rubber
650			_aInteractions
650			_aModel compound
650			_aSilane
650			_aSilica
942			_cJS
999			_c72154 _d72154