Počet záznamů: 1

Synthesis and properties of hyperbranched polyimides combined with silica

SYSNO ASEP	0432323
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Synthesis and properties of hyperbranched polyimides combined with silica
Tvůrce(i)	Minko, E. (CZ) Sysel, P. (CZ) Hauf, M. (CZ) Brus, Jiří (UMCH-V)_{RID, ORCID} Kobera, Libor (UMCH-V)_{RID, ORCID}
Zdroj.dok.	Macromolecular Symposia. - : Wiley - ISSN 1022-1360 Roč. 295, č. 1 (2010), s. 88-93
Poč.str.	6 s.
Akce	Prague Meetings on Macromolecules /73./ New Frontiers in Macromolecular Science: From Macromolecular Concepts of Living Matter to Polymers for Better Quality of Life
Datum konání	05.07.2009-09.07.2009
Místo konání	Prague
Země	CZ - Česká republika
Typ akce	WRD
Jazyk dok.	eng - angličtina
Země vyd.	DE - Německo
Klíč. slova	hyperbranched polyimides ; silica ; sol-gel process
Vědní obor RIV	CD - Makromolekulární chemie
CEP	IAA400500602 GA AV ČR - Akademie věd
CEZ	AV0Z40500505 - UMCH-V (2005-2011)
UT WOS	000288038700011
EID SCOPUS	78650163996
DOI	10.1002/masy.200900159
Anotace	The novel hyperbranched polyimide - silica hybrid materials containing theoretically 16 wt% of an inorganic phase were prepared via a sol-gel process. An amine terminated polyimide precursor (hyperbranched polyamic acid) was prepared from commercially available monomers 4,4′,4"-triaminotriphenylmethane and 4,4′-oxydiphthalic anhydride in molar ratio 1:1. Tetramethoxysilane and/or 3-glycidoxypropyltrimethoxysilane (also used as a coupling agent) were used as silica precursors. During thermal exposition the polyimide precursor was transformed to hyperbranched polyimide and hydrolyzed alkoxy groups reacted mutually to form silica. The final products were self-standing films, whose structure was characterized by using IR and 13C and 29Si solid state NMR spectroscopy. The influence of the amount of silica and/or coupling agent on their structure and thermal properties was described.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2015

Počet záznamů: 1