Poly(methyl methacrylate)-titania hybrid materials by sol-gel processing
- Peking Univ., Beijing (China). Inst. of Physical Chemistry
Sol-gel derived Poly(methyl methacrylate)-titania hybrid materials were synthesized by using acrylic acid or allyl acetylacetone (3-allyl-2,4-pentanedione) as coupling agents. Titanium butoxide modified with acrylic acid (or titanium isopropoxide modified with allyl acetylacetone) was hydrolyzed to produce a titania network, and then poly (methyl methacrylate) (PMMA) chains formed in situ through a radical polymerization were chemically bonded to the forming titania network to synthesize a hybrid material. Transparent hybrid materials with different contents of titania were achieved. With the increase of the titania content, the colors of the products changed form yellow to dark red. The synthesis process was investigated step by step by using FTIR spectroscopy, and the experimental results demonstrated that acrylate or acetylacetonato groups bound to titanium remain in the final hybrid materials. The thermal stability of the hybrid materials was considerably improved relative to pure PMMA. Field emission scanning electron microscopy (FE-SEM) analyses showed the hybrid materials are porous and pore diameters vary from 10nm to 100nm. The hybrid materials using allyl acetylacetone as the coupling agent exhibited thermochromic effects that both pure PMMA and titania do not have.
- OSTI ID:
- 427694
- Report Number(s):
- CONF-960401-; ISBN 1-55899-338-X; TRN: IM9708%%20
- Resource Relation:
- Conference: Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 8-12 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Better ceramics through chemistry 7: Organic/inorganic hybrid materials; Coltrain, B.K. [ed.] [Eastman Kodak Co., Rochester, NY (United States)]; Sanchez, C. [ed.] [Univ. Pierre et Marie Curie, Paris (France)]; Schaefer, D.W. [ed.] [Sandia National Labs., Albuquerque, NM (United States)]; Wilkes, G.L. [ed.] [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)]; PB: 695 p.; Materials Research Society symposium proceedings, Volume 435
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANOMETALLIC COMPOUNDS
SOL-GEL PROCESS
MICROSTRUCTURE
PHYSICAL PROPERTIES
PMMA
TITANIUM OXIDES
POLYMERIZATION
ACRYLIC ACID
ACETYLACETONE
ALKOXIDES
HYDROLYSIS
DEHYDROCYCLIZATION
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
THERMAL GRAVIMETRIC ANALYSIS
SCANNING ELECTRON MICROSCOPY
CONCENTRATION RATIO
POROSITY
EXPERIMENTAL DATA