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UV Curing of Organic‐Inorganic Hybrid Coatings Containing Polyhedral Oligomeric Silsesquioxane Blocks
Author(s) -
Amerio Ezio,
Sangermano Marco,
Colucci Giovanna,
Malucelli Giulio,
Messori Massimo,
Taurino Rosa,
Fabbri Paola
Publication year - 2008
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200800080
Subject(s) - silsesquioxane , materials science , nanocomposite , curing (chemistry) , thermal stability , polymer , oligomer , chemical engineering , condensation , composite number , sol gel , thermosetting polymer , composite material , methacrylic acid , hybrid material , polymer chemistry , nanotechnology , copolymer , physics , engineering , thermodynamics
Hybrid nanocomposite coatings were prepared by the UV‐curing technique with a methacrylic oligomer and multifunctional methacrylic polyhedral oligomeric silsesquioxane blocks (POSS®). The results obtained from the polyhedral compounds were compared with those of a disordered framework obtained by the condensation of a silica precursor (MEMO). The inorganic domains generated during synthesis created constraints in movement of polymer segments, which reflected in an increase in T g of the hybrid nanocomposite coatings. The films were transparent. The random structure obtained by the condensation of the MEMO showed a stronger effect on T g than that observed by introducing POSS®. The effect of inorganic domains reflected on thermal stability, surface hardness and mechanical properties of the hybrid nano‐composite coatings.