JUNG, IN LEE, GH SUK, MY YEON, SH 2024-01-21T23:38:51Z 2024-01-21T23:38:51Z 2022-01-10 1991-12-20 0253-2964 https://pubs.kist.re.kr/handle/201004/146704 Novel polysilamethylenosilanes (PSMS) were prepared by Wurtz type co-condensation of various mixtures of 2,4,4,6-tetrachloro-2,6-dimethyl-2,4,6-trisilaheptane (TSH) and dimethyldichlorosilane (D). When TSH was incorporated more than 25 mole%, PSMS polymers were soluble in common organic solvents probably due to the polycarbosilane linkage brought from TSH. The molecular weights of the polymer were measured by gel permeation chromatography and showed higher molecular weight with high TSH content. The thermal gravimetric residues increased as TSH contents increased. These properties suggested that PSMS polymers could be useful as ceramic precursors for silicon carbide. English KOREAN CHEMICAL SOC HIGH-TENSILE STRENGTH HIGH YOUNGS MODULUS POLYCARBOSILANE FIBER NOVEL POLYSILAMETHYLENOSILANES - NEW PRECURSORS FOR SILICON-CARBIDE Article 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.12, no.6, pp.705 - 708 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 12 6 705 708 scie A1991GY13000028 Chemistry, Multidisciplinary Chemistry Article HIGH-TENSILE STRENGTH HIGH YOUNGS MODULUS POLYCARBOSILANE FIBER polysilamethylenosilanes dichlorination sodium