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Application of cellulose sulfoacetate obtained from sugarcane bagasse as an additive in mortars
Author(s) -
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
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34881
Subject(s) - cellulose , portland cement , bagasse , materials science , sulfuric acid , ultimate tensile strength , sulfate , nuclear chemistry , derivative (finance) , intrinsic viscosity , mortar , composite material , polymer , chemical engineering , polymer chemistry , cement , chemistry , organic chemistry , pulp and paper industry , metallurgy , economics , financial economics , engineering
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 13 C‐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