Nanoporous Crosslinked Copolymers Prepared by Thermal Degradation of Poly(Methacryl‐N,N′‐diisopropylurea‐co‐ethylene Glycol Dimethacrylate)

Autor:	Grozdana Bogdanić, Branka Špehar, Ana Erceg Kuzmić, Radivoje Vuković, Dragutin Fleš
Rok vydání:	2004
Předmět:	Materials science Polymers and Plastics Nanoporous Ethylene glycol dimethacrylate Butanone Chemical modification General Chemistry Dibenzoyl Peroxide chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Ceramics and Composites Copolymer Degradation (geology) Thermal stability
Zdroj:	Journal of Macromolecular Science, Part A. 41:1087-1094
ISSN:	1520-5738 1060-1325
Popis:	Copolymers of methacryl‐N,N′‐diisopropylurea (MA‐DiPrU) with ethylene glycol dimethacrylate (EDMA) at monomer‐to‐monomer ratios in the feed: 0.3/0.7; 0.5/0.5; 0.7/0.3; 0.8/0.2 were prepared in butanone in the presence of 2% of dibenzoyl peroxide (Bz2O2) at 70°C for 48 hr. Copolymers regardless of the ratio of comonomers in the feed decompose thermally at 200–250°C under the separation of isopropylisocyanate (iPrNCO). Residues after the removal of iPrNCO are thermally stable nanoporous crosslinked copolymers of methacryl‐isopropylamide (MA‐iPrA) with EDMA which decompose by a one‐step mechanism between 280°C and 450°C. Nonporous model copolymers poly(MA‐iPrA‐co‐EDMA) of similar composition, prepared by copolymerization of MA‐iPrA with EDMA, also decomposed by a one‐step mechanism as shown by TGA measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3dea19907e9e24fe7e5235658650f219 https://doi.org/10.1081/ma-200026543 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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