This diluent plays an important role in the pore structure tailoring of these copolymer networks. Heterogeneities in the network structure appear if the diluent is not in the gel phase during polymerization. The incipient phase separation
during the crosslinking copolymerization may occur before the onset of macrogelation. Otherwise, if the system phase separates after the gel point, the gel shrinks and becomes a dispersion of the expelled liquid droplets in the network phase[7,8].Inboth cases,after complete conversion of the monomers, a heterogeneous STY–DVB network is obtained. Removal of the diluent from the network generates voids (pores) with sizes from 10 Å up to 1μm in the dried state. Relationships between the synthesis conditions and the structure of porous STY–DVB networks have been the
subject of intensive studies during the last four decades[5,6].
drying process of the swollen copolymers in good solvents may
lead to a partial or total collapse of the pores [9,10].
This diluent plays an important role in the pore structure tailoring of these copolymer networks. Heterogeneities in the network structure appear if the diluent is not in the gel phase during polymerization. The incipient phase separation
during the crosslinking copolymerization may occur before the onset of macrogelation. Otherwise, if the system phase separates after the gel point, the gel shrinks and becomes a dispersion of the expelled liquid droplets in the network phase[7,8].Inboth cases,after complete conversion of the monomers, a heterogeneous STY–DVB network is obtained. Removal of the diluent from the network generates voids (pores) with sizes from 10 Å up to 1μm in the dried state. Relationships between the synthesis conditions and the structure of porous STY–DVB networks have been the
subject of intensive studies during the last four decades[5,6].
drying process of the swollen copolymers in good solvents may
lead to a partial or total collapse of the pores [9,10].
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