Beom-Jin Choi

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As the Internet emerges as a new venue for many business activities, a new organizational form called virtual communities has emerged and rapidly spread out across the entire sector of industry to take advantage of the efficiency of communications technologies. In the knowledge era, such online communities are increasingly being regarded as a cyberspace in(More)
Poly(glycidyl methadrylate-block-styrene) (PGMA-b-PS), a block copolymer consisting of glycidyl methacrylate and styrene, was synthesized via reversible addition-fragmentation chain transfer living polymerization. The synthesized PGMA-b-PS was then grafted with low-molecular-weight polyethylene glycol (PEG) via epoxy ring opening to give PGMA-g-PEG-b-PS,(More)
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