EFFECT OF PEG ON PARTICAL DISTRIBUTION AND PORE STRuCTURE IN SILICA SOL AND GEL
PEG对SiO2溶胶—凝胶中颗粒度分布和孔结构的影响

PEG was added into TEOS-Water-Ethanol-catalyst system. The effects of the PEG on SBET, particle radius distribution and pore structure in silica sol and gel were studied. From the changes of the particle sizes in' the sol, the model of the PEG behaviour in the sol-gel processes was described.