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metadata.dc.type: | Artigo de Periódico |
Title: | Application of cellulose sulfoacetate obtained from sugarcane bagasse as an additive in mortars |
Other Titles: | Journal of Applied Polymer Science |
Authors: | Cerqueira, Daniel Alves Nascimento, Bárbara Rodrigues Filho, Guimes Frigoni, Elaine Selaro Soares, Heline Mendes Meireles, Carla da Silva Cerqueira, Daniel Alves Valente, Artur José Monteiro |
metadata.dc.creator: | Cerqueira, Daniel Alves Nascimento, Bárbara Rodrigues Filho, Guimes Frigoni, Elaine Selaro Soares, Heline Mendes Meireles, Carla da Silva Cerqueira, Daniel Alves Valente, Artur José Monteiro |
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. |
Keywords: | Additives Biodegradable Water-soluble polymers |
metadata.dc.rights: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/15614 |
Issue Date: | 2011 |
Appears in Collections: | Artigo Publicado em Periódico (ICADS) |
Files in This Item:
File | Description | Size | Format | |
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Daniel Alves Cerqueira.pdf | 1,51 MB | Adobe PDF | View/Open |
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