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Titolo:
Triblock copolyampholytes from 5-(N,N-dimethylamino)isoprene, styrene, andmethacrylic acid: Synthesis and solution properties
Autore:
Bieringer, R; Abetz, V; Muller, AHE;
Indirizzi:
Univ Bayreuth, D-95440 Bayreuth, Germany Univ Bayreuth Bayreuth Germany D-95440 yreuth, D-95440 Bayreuth, Germany Bayreuther Zentrum Kolloide & Grenzflachen, D-95440 Bayreuth, Germany Bayreuther Zentrum Kolloide & Grenzflachen Bayreuth Germany D-95440 many
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL E
fascicolo: 1, volume: 5, anno: 2001,
pagine: 5 - 12
SICI:
1292-8941(200105)5:1<5:TCF5SA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROUP-TRANSFER POLYMERIZATION; AMPHIPHILIC BLOCK-COPOLYMERS; BLENDS INVOLVING POLYMERS; ABC TRIBLOCK; DIBLOCK COPOLYMERS; ACRYLIC-ACID; MICELLIZATION; MICELLES; BEHAVIOR; POLYAMPHOLYTES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Bieringer, R Freudenberg Forschungsdienste KG, D-69465 Weinheim, Germany Freudenberg Forschungsdienste KG Weinheim Germany D-69465 y
Citazione:
R. Bieringer et al., "Triblock copolyampholytes from 5-(N,N-dimethylamino)isoprene, styrene, andmethacrylic acid: Synthesis and solution properties", EUR PHY J E, 5(1), 2001, pp. 5-12

Abstract

ABC triblock copolymers of the type poly[5-(N,N-dimethylamino)isoprene]-block-polystyrene-block-poly(tert-butyl methacrylate) (AiST) were synthesizedand hydrolyzed to yield poly[5-(N,N-dimethylamino)isoprene]-block-polystyrene-block-poly(methacrylic acid) (AiSA) triblock copolyampholytes. Due to acomplex solubility behavior the solution properties of these materials hadto be investigated in THF/water solvent mixtures. Potentiometric titrations of AiSA triblock copolyampholytes showed two inflection points with the Ablock being deprotonated prior to the Ai hydrochloride block thus forming a polyzwitterion at the isoelectric point (iep). The aggregation behavior was studied by dynamic light scattering (DLS) and freeze-fracture/transmission electron microscopy (TEM). Large vesicular structures with almost pH-independent radii were observed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 18:02:42