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- Title
Application of cellulose sulfoacetate obtained from sugarcane bagasse as an additive in mortars.
- Authors
Nascimento, Bárbara; Filho, Guimes Rodrigues; Frigoni, Elaine Selaro; Soares, Heline Mendes; da Silva Meireles, Carla; Cerqueira, Daniel Alves; Valente, Artur José Monteiro; de Albuquerque Carvalho, Rui; de Assunção, Rosana Maria Nascimento; de Castro Motta, Leila Aparecida
- Abstract
In this study, cellulose sulfoacetate (CSA) was produced with cellulose extracted from sugarcane bagasse with sulfuric acid as a catalyst under homogenous conditions so that the derivative could be applied as an additive for mortar of Portland (Cimento Portland de alta resistência inicial, CPV-ARI) cement. The IR spectra showed that only precipitate C presented the characteristic band of sulfate groups (807 cm−1) and was, therefore, the sulfoacetylated derivative. CSA presented a degree of acetylation of 2.70 and a degree of sulfonation of 0.063, and the presence of sulfate groups in the derivative displaced the position of C(6) to a lower field in the 13C-NMR spectrum and influenced reduced viscosity as a function of concentration. The evaluation of CSA as an additive showed that for a polymer/cement ratio of 0.6%, an increase of 13.80% was achieved consistently, and an increase of 21.05% in the potential tensile of adhesion strength was also achieved. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
- Subjects
CELLULOSE; BAGASSE; SUGARCANE products; PORTLAND cement; POLYMERS
- Publication
Journal of Applied Polymer Science, 2012, Vol 124, Issue 1, p510
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.34881