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Sisal cellulose acetates obtained from heterogeneous reactions
(BUDAPEST UNIV TECHNOL & ECON, 2008)
In the present work, cellulose obtained from sisal, which is a source of rapid growth, was used. Cellulose acetates were produced in heterogeneous medium, using acetic anhydride as esterifying agent and iodine as catalyst, ...
Some aspects of acetylation of untreated and mercerized sisal cellulose
(Sociedade Brasileira de Química, 2010)
We report here on some aspects of the acetylation in LiCl/N,N-dimethylacetamide, DMAc, of untreated and mercerized sisal cellulose, hereafter designated as sisal and M-sisal, respectively. Fiber mercerization by NaOH ...
Chitosan, sisal cellulose, and biocomposite chitosan/sisal cellulose films prepared from thiourea/NaOH aqueous solution
(ELSEVIER SCI LTD, 2010)
Environmentally friendly biocomposites were successfully prepared by dissolving chitosan and cellulose in a NaOH/thiourea solvent with subsequent heating and film casting. Under the considered conditions, NaOH/thiourea led ...
A physical organic chemistry approach to dissolution of cellulose: effects of cellulose mercerization on its properties and on the kinetics of its decrystallization
(ARKAT USA INC, 2011)
The effects of alkali treatment on the structural characteristics of cotton linters and sisal cellulose samples have been studied. Mercerization results in a decrease in the indices of crystallinity and the degrees of ...
Acetylation of cellulose in LiCl-N,N-dimethylacetamide: first report on the correlation between the reaction efficiency and the aggregation number of dissolved cellulose
(SPRINGER, 2011)
The acylation of three cellulose samples by acetic anhydride, Ac(2)O, in the solvent system LiCl/N,N-dimethylacetamide, DMAc (4 h, 110 A degrees C), has been revisited in order to investigate the dependence of the reaction ...
Modificação da celulose de sisal (Agave sisalana) com o poli (álcool vinílico) (PVA) e avaliação de seu potencial no comportamento reológico de óleo pesado
(Pós-Graduação em Engenharia QuímicaUniversidade Federal de Sergipe (UFS), 2023)
Saccharification of Brazilian sisal pulp: evaluating the impact of mercerization on non-hydrolyzed pulp and hydrolysis products
(SPRINGERDORDRECHT, 2012-04)
Cultivation of sisal, a plant with a short growth cycle, is highly productive in Brazil. This work is part of extensive research in which sisal is valued. In these studies, sisal fibers are used in the preparation of ...
Nanocomposites of waterborne polyurethane reinforced with cellulose nanocrystals from sisal fibres
(Springer/plenum Publishers, 2017-07-28)
Cellulose nanocrystals (CNC) were isolated from sisal fibres and were incorporated in the form of an aqueous suspension to a waterborne polyurethane (WBPU) synthesized from components derived from natural sources using an ...