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Titolo:
Effect of acetylation on dimensional stability, mechanical, and dynamic properties of jute board
Autore:
Rana, AK; Mitra, BC; Bannerjee, AN;
Indirizzi:
Univ Calcutta, Univ Coll Sci & Technol, Calcutta 700009, W Bengal, India Univ Calcutta Calcutta W Bengal India 700009 utta 700009, W Bengal, India Indian Jute Ind Res Assoc, Calcutta 700088, W Bengal, India Indian Jute Ind Res Assoc Calcutta W Bengal India 700088 W Bengal, India
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 7, volume: 72, anno: 1999,
pagine: 935 - 944
SICI:
0021-8995(19990516)72:7<935:EOAODS>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLASS-FIBERS; PMMA;
Keywords:
jute; acetylation; jute composite; dimensional stabilization; dynamic mechanical thermal analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Bannerjee, AN Univl,alcutta, Univ Coll Sci & Technol, 92 APC Rd, Calcutta 700009, W Benga Univ Calcutta 92 APC Rd Calcutta W Bengal India 700009 Benga
Citazione:
A.K. Rana et al., "Effect of acetylation on dimensional stability, mechanical, and dynamic properties of jute board", J APPL POLY, 72(7), 1999, pp. 935-944

Abstract

Jute slivers were acetylated in pilot scale following a no catalyst-no solvent method at 120 degrees C for 2 h. The weight % gain was found to be 11.37. Different jute boards were pressed under heat and pressure using acetylated jute sliver and urea formaldehyde resin. Neutral salt (NaCl), acid salt (NH4Cl), and melamine powder were used separately for curing urea formaldehyde. For comparison purposes, control boards were also prepared using nonacetylated slivers. The boards were tested for water soaking, cyclic water soaking, and cyclic humidity to see the effect of acetylation on dimensional stabilization. This chemical modification was found to improve the dimensional stability to a great extent for NaCl and NH4Cl cured boards and to a less extent for a melamine-cured one. Tensile and flexural strengths were tested by Instron before and after the cyclic tests. Retention values were found to be as high as 60% after cyclic water tests for acetylated boards and the same was as low as 24% for control boards. Dynamic parameters, such as storage flexural modulus(E'), loss flexural modulus (E "), and loss factor or damping efficiency (tan delta) were determined in a fixed-frequency mode. Dynamic mechanical study revealed that tan delta peaks were lowered dueto increased bulkiness of the fiber after acetylation and thus restricted mobility. A tiny additional peak was also visible at similar to 90 degrees C beside the main peak at similar to 125 degrees C for boards with modifiedslivers. (C) 1999 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 03:14:42