PREPARATION AND PROPERTIES OF MMA/1-PROPYLMETHACRYLATE-POSS COPOLYMER WITH ATOM TRANSFER RADICAL POL

• 作 者: Ho-young Lee Young-jun Shin Dong-ho Lee Seok Kyun Noh
• 机 构: Department of Polymer Science and Engineering,Kyungpook National University,Daegu 702-701,Korea,Scho
• 出 处: Chinese Journal of Polymer Science
• 发表日期: 2008年05期
• 关键词: copolymer methacrylate polymerization hexane monomer calorimetry permeation ATRP

The methyl methacrylate(MMA)/1-propylmethacrylate-polyhedral oligomeric silsesquioxane(PM-POSS) copolymers were synthesized via atom transfer radical polymerization with CuBr as catalyst.The unreacted PM-POSS monomer could be removed completely by washing the copolymerization product with n-hexane.The copolymers were characterized with ~1H-NMR,X-ray diffraction,differential scanning calorimetry,thermogravimetric analysis and gel permeation chromatography.With increasing PM-POSS feed ratio,the total conversion increased while the glass transition temperatures of copolymer decreased.The thermogravimetric analysis demonstrated that the thermal stability of copolymer improved slightly with PM-POSS addition.The molecular weight of copolymers increased with incorporation of PM-POSS.

The methyl methacrylate (MMA) / 1-propylmethacrylate-polyhedral oligomeric silsesquioxane (PM-POSS) copolymers were synthesized via atom transfer radical polymerization with CuBr as catalyst. The unreacted PM-POSS monomer could be removed completely by washing the copolymerization product with n- hexane. These copolymers were characterized with ~ 1H-NMR, X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis and gel permeation chromatography. With increasing PM-POSS feed ratio, the total conversion increased while the glass transition temperatures of the copolymer decreased. thermogravimetric analysis demonstrated that the thermal stability of copolymer improved slightly with PM-POSS addition. The molecular weight of Brazil increased with incorporation of PM-POSS.