Synthesis and Characterization of Poly(ester-amide)s from Bis(2-oxazoline)s, Anhydrides, and Diols

Autor:	Luisa Fiocca, Riccardo Po, Luigi Abis, Riccardo Mansani
Rok vydání:	1995
Předmět:	chemistry.chemical_classification Reaction mechanism Polymers and Plastics Comonomer Organic Chemistry Diol Oxazoline Polymer Inorganic Chemistry chemistry.chemical_compound Polymerization chemistry Amide Polymer chemistry Materials Chemistry Ethylene glycol
Zdroj:	Macromolecules. 28:5699-5705
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma00121a002
Popis:	A new class of poly(ester-amide)s was prepared by reacting bis(2-oxazoline)s, carboxylic anhydrides, and diols of different structures. The polymerization proceeds through the formation of a dicarboxy ester by reaction of two anhydride molecules with one diol molecule and subsequent 2-oxazoline ring opening by attack of the dicarboxy ester. The whole process leads to linear poly(ester-amide)s, whose structures were established by carbon and proton NMR analysis. The thermal characteristics of the prepared polymers were studied by DSC. Transition temperatures were found to increase with an increase in the polymer chain stiffness. Poly(ether-ester-amide)s were also prepared by employing poly(ethylene glycol) as a comonomer, alone, or in a mixture with ethylene glycol, thus obtaining block segmented polymers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5d7b9ef6ed3f5dbb3d246b4971733506 https://doi.org/10.1021/ma00121a002 Zobrazit plný text záznamu