Dissolution Inhibitory Effect of a Urea Additive on a Carboxyl Polymer through a Supramolecular Structure

Autor:	Takao Miwa, Géraldine Rames-Langlade, Takumi Ueno, Yoshiaki Okabe, Yasunari Maekawa
Rok vydání:	2000
Předmět:	chemistry.chemical_classification Polymers and Plastics Organic Chemistry Supramolecular chemistry Infrared spectroscopy Polymer Polyelectrolyte Inorganic Chemistry chemistry.chemical_compound chemistry Amide Materials Chemistry Urea Organic chemistry Imide Dissolution
Zdroj:	Macromolecules. 33:6794-6799
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma000680q
Popis:	The effect of the addition of carbonyl compounds such as amide, imide, urea, and ester derivatives on the dissolution rate of carboxyl-group-containing polymers in an alkaline solution was investigated. Urea derivatives lowered the dissolution rate of the polymer film more than the other carbonyl compounds did, and 1,3-diphenylurea inhibited the dissolution of the polymer film much more efficiently than other urea derivatives. Structural studies of the dissolution inhibition led to the proposal of a supramolecular structure, in which the urea functionality hydrogen bonded to two carboxyl groups of the polymer to form a hydrophilic domain surrounded by the hydrophobic substituents of the urea derivatives. The existence of this supramolecular structure is supported by the infrared spectra of the urea additives in the polymer films.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fcea6ff5075ebad487a8ea69a553fc10 https://doi.org/10.1021/ma000680q Zobrazit plný text záznamu