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Titolo:
PROPERTIES OF BRANCHED AND NETWORK POLY(VINYL ALCOHOLS) PREPARED WITHPOLY(VINYL ALCOHOL) HAVING ALDEHYDE GROUPS AT THE CHAIN-ENDS
Autore:
MATSUZAWA S; ABE Y;
Indirizzi:
SHINSHU UNIV,FAC TEXT SCI & TECHNOL UEDA NAGANO 386 JAPAN
Titolo Testata:
Polymer international
fascicolo: 1, volume: 41, anno: 1996,
pagine: 53 - 58
SICI:
0959-8103(1996)41:1<53:POBANP>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Keywords:
PERIODATE CLEAVAGE POLY(VINYL ALCOHOL); BRANCHED POLY(VINYL ALCOHOL); HUGGINS CONSTANT; POLY(VINYL ALCOHOL)-IODINE COMPLEX; NETWORK POLY(VINYL ALCOHOL);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
S. Matsuzawa e Y. Abe, "PROPERTIES OF BRANCHED AND NETWORK POLY(VINYL ALCOHOLS) PREPARED WITHPOLY(VINYL ALCOHOL) HAVING ALDEHYDE GROUPS AT THE CHAIN-ENDS", Polymer international, 41(1), 1996, pp. 53-58

Abstract

Branched and network poly(vinyl alcohols) (PVAs) were prepared with inter-acetalization of the PVA with aldehyde groups at the chain ends which was prepared by the cleavage of 1,2 glycol bonds in commercial PVA. The numbers of branches estimated from molecular weights were compared with those estimated by theory. Huggins' constant and crystallinity decreased with increasing branch number. Dissolution of branched PVAs into dimethylsulphoxide was not so easy compared with commercial PVA. The colour of branched PVA-iodine complex decreased rapidly with standing while that of commercial PVA decreased gradually. Network PVAs with Young's modulus of 1-8 MPa were prepared.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 00:54:47