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Titolo:
Unsteady stirring method used in suspension polymerization of styrene
Autore:
Yang, B; Kamidate, Y; Takahashi, K; Takeishi, M;
Indirizzi:
Yamagata Univ, Dept Mat Sci & Engn, Yonezawa, Yamagata 9928510, Japan Yamagata Univ Yonezawa Yamagata Japan 9928510 wa, Yamagata 9928510, Japan
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 7, volume: 78, anno: 2000,
pagine: 1431 - 1438
SICI:
0021-8995(20001114)78:7<1431:USMUIS>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
PARTICLE-SIZE DISTRIBUTION; AGITATED VESSEL; IMPELLER; DISPERSION; SPEEDS;
Keywords:
suspension polymerization; steady stirring; unsteady stirring; particle size distribution; coalescence rate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Takahashi, K Yamagata Univ, Dept Mat Sci & Engn, Yonezawa, Yamagata 9928510, Japan Yamagata Univ Yonezawa Yamagata Japan 9928510 9928510, Japan
Citazione:
B. Yang et al., "Unsteady stirring method used in suspension polymerization of styrene", J APPL POLY, 78(7), 2000, pp. 1431-1438

Abstract

An unsteady stirring method, that is, coreverse rotation with different periodic intervals, was adopted to the suspension polymerization of styrene. Experiments were carried out in a 0.5-L flat-bottom flask with a six-blade Rushton turbine. Parameters affecting the final particle size and the particle size distribution under the unsteady stirring conditions, such as the agitation speed and the periodic interval, had been studied in detail, and the results were compared with those under a steady stirring one. The experimental results showed that the average particle size decreased and the uniformity final particle size distribution could be significantly improved when unsteady stirring approach is used. These were explained as the result ofthe decrease of the coalescence rate during the suspension polymerization when the unsteady stirring method was used. (C) 2000 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 15:44:21