Premium
Swelling behavior and thermal stability of poly(methylmethacrylate) crosslinked by the oxozirconium cluster Zr 4 O 2 (methacrylate) 12
Author(s) -
Trimmel Gregor,
Gross Silvia,
Kickelbick Guido,
Schubert* Ulrich
Publication year - 2001
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.161
Subject(s) - copolymer , chemistry , swelling , methacrylate , thermal stability , polymer chemistry , cluster (spacecraft) , zirconium , methacrylic acid , solvent , chemical engineering , organic chemistry , polymer , computer science , engineering , programming language
A new isomer of the oxozirconium cluster Zr 4 O 2 (methacrylate) 12 was obtained by reaction of zirconium butoxide with an excess of methacrylic acid. Contrary to the known isomer, the structure is centrosymmetric with a planar, rhombic Zr 4 core. Copolymerization with a 56–207‐fold excess of methylmethacrylate results in cluster‐crosslinked poly(methylmethacrylate) that swells in ethyl acetate but does not dissolve. The solvent uptake during swelling decreases and the thermal stability improves with an increasing portion of the cluster. Copyright© 2001 John Wiley & Sons, Ltd.