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Titolo:
Studies on fibers spun from poly(vinyl alcohol-b-acrylonitrile) emulsions prepared by ultrasonic technique. I. Characterization of fiber structure
Autore:
Xiao, L; Xiao, W; Liu, Q; Chen, K; Xu, X;
Indirizzi:
Chengdu Univ Sci & Technol, Dept Plast Engn, Chengdu 610065, Sichuan, Peoples R China Chengdu Univ Sci & Technol Chengdu Sichuan Peoples R China 610065 R China Chengdu Univ Sci & Technol, Polymer Res Inst, Chengdu 610065, Sichuan, Peoples R China Chengdu Univ Sci & Technol Chengdu Sichuan Peoples R China 610065 R China
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 7, volume: 80, anno: 2001,
pagine: 979 - 988
SICI:
0021-8995(20010516)80:7<979:SOFSFP>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Xiao, W Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Zhejiang,PeoplesR China Zhejiang Univ Hangzhou Zhejiang Peoples R China 310027 lesR China
Citazione:
L. Xiao et al., "Studies on fibers spun from poly(vinyl alcohol-b-acrylonitrile) emulsions prepared by ultrasonic technique. I. Characterization of fiber structure", J APPL POLY, 80(7), 2001, pp. 979-988

Abstract

The structural characteristics of poly(vinyl alcohol-b-acrylonitrile) fibers with different AN contents were studied by comparison with that of PVA and PAN fibers. X-ray diffraction analysis showed that both PVA and PAN blocks in the copolymer fibers formed crystals. Two glass transition temperatures corresponding to PVA and PAN components appeared on the dynamic mechanical spectrum of the copolymer fiber, indicative of their incompatibility in the fiber. SEM intuitively exhibited a longitudinal cracked and grooved surface morphology similar to that of PAN fiber and revealed an internal microdomain separation morphology for the block copolymer fibers. TEM showed a morphological structure intermediate between those of PVA and PAN fibers forthe block copolymer fibers. It was also found that the copolymer fiber with the lower AN content has a sheath-core structure. (C) 2001 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 22:25:55