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Titolo:
Synthesis of chromophore-labeled PP by the borane approach and their application in probing penetration of oligomeric PP into PP particles
Autore:
Zhao, H; Pionteck, J; Taesler, C; Potschke, P;
Indirizzi:
Inst Polymer Res Dresden EV, D-01069 Dresden, Germany Inst Polymer Res Dresden EV Dresden Germany D-01069 069 Dresden, Germany
Titolo Testata:
MACROMOLECULAR CHEMISTRY AND PHYSICS
fascicolo: 2, volume: 202, anno: 2001,
pagine: 313 - 318
SICI:
1022-1352(20010208)202:2<313:SOCPBT>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIME-RESOLVED FLUORESCENCE; ETHYLENE-PROPYLENE RUBBER; POLYMER BLENDS; EXCIMER FLUORESCENCE; MOLECULAR-WEIGHT; POLYPROPYLENE; COPOLYMERS; POLY(N-VINYLCARBAZOLE); MISCIBILITY; SPECTRA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Pionteck, J Inst Polymer Res Dresden EV, V Hohe Str 6, D-01069 Dresden, Germany Inst Polymer Res Dresden EV V Hohe Str 6 Dresden Germany D-01069
Citazione:
H. Zhao et al., "Synthesis of chromophore-labeled PP by the borane approach and their application in probing penetration of oligomeric PP into PP particles", MACRO CH P, 202(2), 2001, pp. 313-318

Abstract

This paper reports a new method of the synthesis of terminal naphthalene-labeled and carbazole-labeled PP. This method involves the synthesis of a borane-terminated PP intermediate and the selective oxidation of this intermediate to form stable polymeric radicals which then react with maleic anhydride or N-vinylcarbazole producing maleic anhydride terminated PP and terminal carbazole-labeled PP, respectively. Naphthalene terminated PP was prepared by reaction of maleic anhydride terminated PP with 1-naphthylmethylamine. Infrared, H-1 NMR, UV and fluorescence measurements all proved the coupling of the chromophore groups to the PP chains. GPC results showed that no detectable cross-linking or degradation appeared during the functionalization of PP. The chromophoro-labeled polymers were used as probes to study the penetration of oligomeric PP chains into labeled PP particles. The changes of fluorescence spectra showed that chromophore groups in amorphous phase were diluted upon addition of oligomeric PP.

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Documento generato il 30/11/20 alle ore 15:07:08