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제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Controlled Synthesis of Hyperbranched Polyglycerols and Their Potential Uses

2016년 9월 6일 16시 45분 05초
POLY2-2 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 09시 : 50분
고분자화학 - Architecture Controlled Polymers: Dendrimer, Hyperbranched, Star, Cycle and beyond
저자 및
부산대학교 고분자공학과, Korea
Recently ring-opening multibranching polymerization (ROMBP) has been demonstrated as a versatile method for the synthesis of a variety of hyperbranched homopolymers as well as complex macromolecular architectures. Intense efforts have been undertaken to thoroughly characterize these molecules and optimize the synthetic pathway. Modulations of the initiator core and/or the multiple periphery end groups have revealed remarkable potential for applications such as liquid-crystalline materials, hydrogels, polyelectrolytes and hybrid materials for biomineralization. However, most of the previous reports are based on hyperbranched polyglycidols synthesized by the ROMBP of glycidol (dormant AB2 monomer) using 1,1,1-tris(hydroxymethyl)propane (TMP), bearing three OH-groups, as a typical multifunctional initiator core in the presence of base catalyst.
As a means of expanding a versatility of hyperbranched polymers we designed a new hyperbranched polythioether (HPTE), bearing ether, thioether and hydroxyl groups throughout the matrix (Scheme 1). The resulting HPTEs were employed to template the preparation of TiO2 by the sol-gel process in methanol without any additional surfactants. A series of biocompatible and degradable hyperbranched polyether esters, poly(2-hydroxyethyl 2-methyloxirane-2-carboxylate) (pHEMOC) with controlled molecular weight and polydispersity, have also been synthesized via ROMBP. The pHEMOCs comprised of ether and ester backbones and multiple hydroxyl groups on the core and periphery results in materials that exhibit good degradability and low cytotoxicity, enabling them to be an ideal candidate material for biomedical applications.