Synthesis and characterization of some organosilicon derivatives of poly 2-hydroxyethyl methacrylate with cubane as a cross-linking agent
摘要:
Some silyl ether derivatives of 2-hydroxyethyl methacrylate (HEMA) were prepared. The Et3Si, Ph3Si and Me3Si groups together with cubane-1,4-dicarboxylic acid (CDA) were covalently linked with HEMA. The silyl-linked HEMA are abbreviated as TETMA, TPhMA and TMEMA, respectively. CDA linked to two HEMA groups is the cross-linking agent (CA). Free radical copolymerization and cross-linking copolymerization of the resulting monomers with 2-hydroxyethyl methacrylate (HEMA) with the various ratios of CA as cross-linking agent, were carried Out using AIBN as initiator at the temperature ranges 60-70 degrees C. The cross-linking copolymers were identified by FT-IR spectroscopy. The glass transition temperature (T-g) of the network polymers was determined calorimetrically. The T, of network polymers increases with increase of cross-linking degree. All monomers and polymers were identified by spectroscopic methods. These silyl derivatives modified methacrylate polymer properties. (c) 2005 Elsevier B.V. All rights reserved.
Synthesis and characterization of some organosilicon derivatives of poly 2-hydroxyethyl methacrylate with cubane as a cross-linking agent
作者:Mohammad G. Assadi、Mehrdad Mahkam、Zohreh Tajrezaiy
DOI:10.1016/j.jorganchem.2005.07.068
日期:2005.11
Some silyl ether derivatives of 2-hydroxyethyl methacrylate (HEMA) were prepared. The Et3Si, Ph3Si and Me3Si groups together with cubane-1,4-dicarboxylic acid (CDA) were covalently linked with HEMA. The silyl-linked HEMA are abbreviated as TETMA, TPhMA and TMEMA, respectively. CDA linked to two HEMA groups is the cross-linking agent (CA). Free radical copolymerization and cross-linking copolymerization of the resulting monomers with 2-hydroxyethyl methacrylate (HEMA) with the various ratios of CA as cross-linking agent, were carried Out using AIBN as initiator at the temperature ranges 60-70 degrees C. The cross-linking copolymers were identified by FT-IR spectroscopy. The glass transition temperature (T-g) of the network polymers was determined calorimetrically. The T, of network polymers increases with increase of cross-linking degree. All monomers and polymers were identified by spectroscopic methods. These silyl derivatives modified methacrylate polymer properties. (c) 2005 Elsevier B.V. All rights reserved.