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Effect of the Interfacial Structure on the Local Dynamics of Poly(methyl methacrylate)-Silica Hybrids

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Poly(methyl methacrylate-maleic anhydride)-silica hybrid materials, P(MMA-MA5)-SiO2, were synthesized from the in situ reaction of methyl methacrylate (MMA) with 5 mol % maleic anhydride (MA),then hydrolyzed with 3-amino-propyl methyl diethoxysilane (APrMDEOS) coupling agent and tetraethoxysilane (TEOS) by asol-gel process. By the same method, the poly(methyl methacrylate-glycidyl methacrylate)-silica hybrids (P[MMA-GMA5]-SiO2), reacted with 5 mol % glycidyl methacrylate (GMA), were obtained. The structure and relaxation of the hybrids were characterized by IR, and 29Si- and 13C-NMR spectroscopy. The effect of the interfacial structure on the local dynamics of the hybrids was investigated using the 29Si-1H cross-polarization and proton spin-lattice relaxation time in the rotation frame.

Keywords: Hybrid; Poly(methyl methacrylate); Relaxation; Silica

Document Type: Research Article


Affiliations: 1: Department of Applied Chemistry, Chung Cheng Institute of Technology, NDU, Tahsi, Taoyuan, Taiwan 2: Chemical Systems Research Division, Chung Shan Institute of Science and Technology, Lungtan, Taoyuan, Taiwan

Publication date: May 1, 2003

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