TY - JOUR
T1 - Step-Growth Polymerization of Poly(phenylcarbosilane) and Its Structural and Physical Properties
AU - Lee, Yoon Joo
AU - Lee, Jung Hyun
AU - Kim, Soo Ryong
AU - Kwon, Woo Teck
AU - Choi, Moon Gun
AU - Kim, Y. H.
PY - 2012/3
Y1 - 2012/3
N2 - The polymerization and molecular weight distribution of poly(phenylcarbosilane) (PPCS) depend on the temperature and pressure conditions under which it is synthesized using the Kumada rearrangement reaction. Its degree of polymerization is related not only to its physical properties such as solubility and boiling point but also to its chemical structure. In this study, soluble PPCS having a weight-average molecular weight (Mw) in the range of 2,500-3,000 was selectively isolated through distillation or fractional precipitation, and its chemical structure and physical properties were studied via FT-IR, NMR, GPC, and thermal analysis. The analytical data indicate that the Si-CH 2-Si backbone and Si-Si bond are formed through step-growth polymerization and are clearly detected after purification. The differences in the thermal behavior of PPCS in air and in nitrogen were also investigated.
AB - The polymerization and molecular weight distribution of poly(phenylcarbosilane) (PPCS) depend on the temperature and pressure conditions under which it is synthesized using the Kumada rearrangement reaction. Its degree of polymerization is related not only to its physical properties such as solubility and boiling point but also to its chemical structure. In this study, soluble PPCS having a weight-average molecular weight (Mw) in the range of 2,500-3,000 was selectively isolated through distillation or fractional precipitation, and its chemical structure and physical properties were studied via FT-IR, NMR, GPC, and thermal analysis. The analytical data indicate that the Si-CH 2-Si backbone and Si-Si bond are formed through step-growth polymerization and are clearly detected after purification. The differences in the thermal behavior of PPCS in air and in nitrogen were also investigated.
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U2 - 10.1007/s10904-011-9624-1
DO - 10.1007/s10904-011-9624-1
M3 - Article
AN - SCOPUS:84857999567
SN - 1574-1443
VL - 22
SP - 464
EP - 469
JO - Journal of Inorganic and Organometallic Polymers and Materials
JF - Journal of Inorganic and Organometallic Polymers and Materials
IS - 2
ER -