Synthesis Of Optically Actively Polymer Via RAFT Polymerization And Studies Of Their Performances

In this thesis, we successfully prepared optically active polymer poly(VBPG) via RAFT polymerization using 6-O-p-vinylbenzyl-1,2:3,4-Di-O-isopropylidene-D-galactopyranose (VBPG) as the monomer. The experimental results suggested that poly(VBPG) have the ability of chial recognition, and the optimum time of the ability of adsorption is 5 to 8 h. On the other hand, we prepared a series of chiral amphiphilic diblock copolymers via RAFT polymerization, used N-isopropylacrylamide (NIPAAm) and poly(ethyleneglycol)methyl ether methacrylate (PEGMA) as hydrophilic monomers, VBPG and 20-(Hydroxymethyl)-pregna-1,4-dien-3-one methacrylate (MAC-HPD) as hydrophobic monomers. Among them, the poly(VBPG)-b-poly(NIPAAm) diblock copolymer was selected to study the aggregation behavior in aqueous solution. Most interesting thing was that the lower critical solution temperature (LCST) of the copolymer (poly(VBPG)-b-poly(NIPAAm)) still increased with the increase of the block of poly(NIPAAm) to a certain extent, although poly(VBPG) was hydrophobic, which was caused by shield effect of PG (1,2:3,4-Di-O-isopropylidene-D-galactopyranose) units in the poly(VBPG).