CHOI, SJ CHO, HN CHOI, SK 2024-01-21T22:10:24Z 2024-01-21T22:10:24Z 2022-01-10 1994-01 0170-0839 https://pubs.kist.re.kr/handle/201004/145902 A new thermotropic side-chain liquid crystalline polymers based on poly (dipropargylamine) backbone were prepared by metathesis polymerization with transition metal catalysts. It was found that the MoCl5-EtAlCl(2) catalyst system were very effective for the cyclopolymerization of presently investigated monomers. Resulting polymers were soluble in common organic solvents such as THF, chloroform, etc. The number-average molecular weight (($) over bar Mn) values of the polymers were in the range of 6.49 x 10(3) - 11.6 x 10(3), relative to polystyrene standard by GPC. Thermal properties of the monomers and the polymers synthesized were examined by differential scanning calorimetry (DSC) and cross-polarized optical microscopy. Both monomer and polymer displayed enantiotropic liquid crystallinity showing the reversible phase transition. English SPRINGER VERLAG TRANSITION-METAL CATALYSTS CYCLOPOLYMERIZATION SYNTHESIS AND CHARACTERIZATION OF NEW SIDE-CHAIN LIQUID-CRYSTALLINE POLYMERS BASED ON POLY(DIPROPARGYLAMINE) MAIN-CHAIN Article 10.1007/BF00297408 1 POLYMER BULLETIN, v.32, no.1, pp.11 - 18 POLYMER BULLETIN 32 1 11 18 scie scopus A1994MV93700002 2-s2.0-0027983366 Polymer Science Polymer Science Article TRANSITION-METAL CATALYSTS CYCLOPOLYMERIZATION synthesis and characterization side chain liquid crystalline polymer poly(dipropargylamine)