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[ÇóÖú] SBA-15µÄcomplementary pores

ÎÄÏ׿´µ½½²SBA-15 complementary pores£¬Õâ¸öcomplementary pore²»ÔõôÀí½âʲôÒâ˼£¬°´ÕÕÎÄÏ×Àí½â¾ÍÊÇÖ¸SBA-15²»¹æÂÉ·Ö²¼µÄ΢¿×ºÍ½é¿×£¬È»ºóÓÖ˵ÕâÖÖ¿×providing various degrees of interconnectivity between adjacent large pore channels. ¶ÔÕâ¸ö²»ÔõôÁ˽⣬ÏëÇë½Ì´ó¼ÒÕâ¸öÊÇʲôÒâ˼¡£Ð»Ð»¡£
Ô­ÎÄÊÇÕâôһ¶Î»°As a silica framework for the construc-
tion of the composite structure with polymers, SBA-15-type
mesoporous silica was prepared through the nonionic assembly
pathway under acidic conditions.14,15 The choice of the SBA-
15-type silica is based on the following reason. Recent studies
have clearly demonstrated that the large uniform ordered main
channels of SBA-15 are actually accompanied by disordered
micropore/small mesopores (referred to as ¡°complementary
pores¡±) in the pore walls, providing various degrees of inter-
connectivity between adjacent large pore channels.15-22 Methods
to tailor such complementary pores have been reported in
detail.15,21,22 It is reasonable that such complementary pores
would play a crucial role in the stabilization of the polymer
layer deposited onto the siliceous mesopore walls. The polymer
chains, interpenetrating with the silica framework through the
complementary pores, would form a physically inseparable
robust polymer network integrated with the silica framework,
increasing significantly the stability of the entire polymeric
system.
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