Resumo

MARTINEZ, Cibele M. F.; FROLLINI, Elisabete  e  CAMPANA FILHO, Sérgio P.. Absorbent properties of carboxymethylated ethanol/water pulps of pith from sugar cane bagasse. Polímeros [online]. 1997, vol.7, n.1, pp.48-57. ISSN 0104-1428.  https://doi.org/10.1590/S0104-14281997000100009.

ABSTRACT: Ethanol/water pulp of pith from sugar cane bagasse was used for the obtention of insoluble carboxymethylcellulose applicable as absorbent material. Typically the carboxymethylation reaction of the bleached pulp was carried out at 80 ^°C for 4 hours in isopropanol/water suspension 1:8 (w/w) employing a 1.0 / 5.4 / 8.8 cellulose / NaOH / ClAcOH molar ratio. The material with the best absorbent characteristics corresponds to a very insoluble product (S_W < 2%) possessing better absorbent properties than the pulp of pith used for its obtention.

Palavras-chave : Insoluble carboxymethylcellulose; ethanol [water pulp]; sugar cane pith.

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