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Titolo:
SYNTHESIS OF POLY(ESTER-AMIDE)S CONTAINING NORBORNADIENE (NBD) RESIDUES BY THE POLYADDITION OF NBD DICARBOXYLIC-ACID DERIVATIVES WITH BIS(EPOXIDE)S AND THEIR PHOTOCHEMICAL PROPERTIES
Autore:
TSUBATA A; UCHIYAMA T; KAMEYAMA A; NISHIKUBO T;
Indirizzi:
KANAGAWA UNIV,FAC ENGN,DEPT APPL CHEM,KANAGAWA KU YOKOHAMA KANAGAWA 221 JAPAN KANAGAWA UNIV,FAC ENGN,DEPT APPL CHEM,KANAGAWA KU YOKOHAMA KANAGAWA 221 JAPAN
Titolo Testata:
Macromolecules
fascicolo: 19, volume: 30, anno: 1997,
pagine: 5649 - 5654
SICI:
0024-9297(1997)30:19<5649:SOPCN(>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
VALENCE ISOMERIZATION; MAIN-CHAIN; MOIETIES; POLYMERS; QUADRICYCLANE; COPOLYMERIZATION; POLYAMIDES; POLYESTERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
A. Tsubata et al., "SYNTHESIS OF POLY(ESTER-AMIDE)S CONTAINING NORBORNADIENE (NBD) RESIDUES BY THE POLYADDITION OF NBD DICARBOXYLIC-ACID DERIVATIVES WITH BIS(EPOXIDE)S AND THEIR PHOTOCHEMICAL PROPERTIES", Macromolecules, 30(19), 1997, pp. 5649-5654

Abstract

rboxynorbornadien-2-yl)carbonyl]methylenedianiline (BNMA) was synthesized in 87 % yield by the reaction of 2,5-norbornadiene-2,3-dicarboxylic acid anhydride with 4,4'-methylenedianiline. Other dicarboxylic acid derivatives containing norbornadiene (NBD) residues were also prepared by the reaction of 2,5-NBD-2,3-dicarboxylic acid anhydride with certain diamines. When the polyaddition of BNMA. with bisphenol A diglycidyl ether (BPGE) was carried out using tetrabutylammonium bromide as acatalyst in NMP at 100 degrees C for 24 h, a polymer with a number average molecular weight of 18 000 was obtained in 91% yield. Polyadditions of other NBD dicarboxylic acid derivatives with BPGE were also performed under the same conditions. The reaction proceeded very smoothlyto give the corresponding NBD poly(ester-amide)s in good yields. Furthermore, the photochemical reactions of the NBD poly(ester-amide)s were evaluated in the film state or in solution. The photochemical Valence isomerization of NBD residues in the polymer films proceeded smoothly to form the corresponding quadricyclane (QC) groups upon irradiationwith sunlight. The photochemical reversion of the resulting QC groupsin the polymer films proceeded efficiently by irradiation of 272 nm light. The stored energy in the QC groups of the polymers was evaluatedto be about 84 kJ/mol by DSC measurement of the irradiated polymer films.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 13:51:41