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Titolo:
Copolycondensation of 4-cyclohexyl and 4-phenylurazole with aliphatic diacid chlorides
Autore:
Mallakpour, SE; Nasr-Isfahani, H;
Indirizzi:
Isfahan Univ Technol, Coll Chem, Organ Polymer Chem Res Lab, Isfahan 84156, Iran Isfahan Univ Technol Isfahan Iran 84156 hem Res Lab, Isfahan 84156, Iran
Titolo Testata:
POLYMER SCIENCE SERIES B
fascicolo: 1-2, volume: 43, anno: 2001,
pagine: 1 - 6
SICI:
1560-0904(200101/02)43:1-2<1:CO4A4W>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
COOPERATIVE STRUCTURE FORMATION; ASSOCIATION CHAIN POLYMERS; 1-METHYL-2,5-BIS<1-(4-PHENYLURAZOLYL)> PYRROLE; THERMOPLASTIC ELASTOMERS; POLYMERIZATION; TRIAZOLINEDIONES; COMBINATION; COVALENT; POLYBUTADIENE; ACYLATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Mallakpour, SE Isfahan Univ Technol, Coll Chem, Organ Polymer Chem Res Lab, Isfahan 84156, Iran Isfahan Univ Technol Isfahan Iran 84156 fahan 84156, Iran
Citazione:
S.E. Mallakpour e H. Nasr-Isfahani, "Copolycondensation of 4-cyclohexyl and 4-phenylurazole with aliphatic diacid chlorides", POLYM SCI B, 43(1-2), 2001, pp. 1-6

Abstract

4-Cyclohexyluraxole (CHU) was synthesized from cyclohexyl isocyanate in two steps. The CHU compound was reacted with excess acetyl chloride in a N,N-dimethylacetamide (DMAc) solution at room temperature. The reaction proceeded with a quantitative yield and involved acetylation of both N-H bonds of the urazole moiety. This compound was characterized by IR, H-1 NMR, and elemental analysis and was used as a model compound for the polycondensation reaction. The solution polycondensation of the CHU monomer with suberoyl chloride (SC) was performed in DMAc and chloroform in the presence of pyridineand led to the formation of novel aliphatic polyamides which were insoluble in almost all solvents. The reaction was controlled by the concentration of monomers and the reaction time and yielded soluble polyamides with an inherent viscosity of 0.167 dl/g. The polymerization reaction with adipoyl chloride (AC) also gave soluble polyamides. The copolycondensation reaction of CHU monomer and 4-phenylurazole (PHU) with AC and SC were carried out under the conditions of solution polymerization with a different content of each urazole monomer and gave novel soluble polyamides having both urazole moieties in the copolymer backbone. The resulting polymers are soluble in most organic solvents. Some structural characterization and physical properties of these novel copolymers are reported.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/12/19 alle ore 01:32:26