Bi-hybrid coatings: polyaniline-montmorillonite filler in organic-inorganic polymer matrix

0392163 - ÚMCH 2014 RIV SK eng J - Článek v odborném periodiku
Špírková, Milena - Bober, Patrycja - Kotek, Jiří - Stejskal, Jaroslav
Bi-hybrid coatings: polyaniline-montmorillonite filler in organic-inorganic polymer matrix.
Chemical Papers. Roč. 67, č. 8 (2013), s. 1020-1027. ISSN 0366-6352
Grant CEP: GA ČR GA202/09/1626; GA AV ČR(CZ) IAAX08240901
Institucionální podpora: RVO:61389013
Klíčová slova: polyaniline * montmorillonite * organic-inorganic composite
Kód oboru RIV: JI - Kompozitní materiály
Impakt faktor: 1.193, rok: 2013

A bi-hybrid composite is represented by an organic-inorganic (O-I) filler dispersed in an O-I matrix. Polyaniline-montmorillonite, as a nanocomposite filler, was synthesised by two independent processes: (1) montmorillonite was surface-modified with a conducting polymer, polyaniline, during the in-situ oxidation of aniline or (2) montmorillonite was pre-treated with aniline, then the aniline was polymerised and the polyaniline subsequently produced penetrated the montmorillonite structure. The organic-inorganic polymer matrix was formed in two independent steps: (1) inorganic building units were formed in situ by the sol-gel process, (2) followed by organic polymeric matrix formation by polyaddition reactions of epoxy groups with amines. Polyaniline-montmorillonite filler was added to the reaction system between these two steps, i.e. when the inorganic structures of the O-I matrix have already been formed but prior to formation of the organic polymeric matrix. Two different O-I matrices were prepared from functionalised organosilicon precursors and oligomeric amines. 3-[(Glycidyloxy)propyl]trimethoxysilane reacted with α,ω-oligo(propylene oxide) diamine and diethoxy[3-(glycidyloxy)propyl]-methylsilane reacted with α,ω-oligo(propylene oxide) triamine. The resulting bi-hybrid coatings, the O-I filler dispersed in the O-I matrix, were characterised by atomic-force and optical microscopies, and also by tensile tests. The filler composition affected both the mechanical and surface properties of the coatings.
Trvalý link: http://hdl.handle.net/11104/0221635