Artículos de revistas
Adhesive And Reinforcing Properties Of Soluble Cellulose: A Repulpable Adhesive For Wet And Dry Cellulosic Substrates
Registro en:
Adhesive And Reinforcing Properties Of Soluble Cellulose: A Repulpable Adhesive For Wet And Dry Cellulosic Substrates. Amer Chemical Soc, v. 7, p. 18750-18758 AUG-2015.
1944-8244
WOS:000360322000066
10.1021/acsami.5b05310
Autor
Ferreira
Elisa S.; Lanzoni
Evandro M.; Costa
Carlos A. R.; Deneke
Christoph; Bernardes
Juliana S.; Galembeck
Fernando
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) This work reports, for the first time, the excellent performance of an aqueous alkaline solution of cellulose as an adhesive for wet and dry cellulosic substrates. Uniaxial tensile tests of filter paper and sulfite writing paper strips bonded with this adhesive (5% cellulose and 7% NaOH aqueous solution) show that failure never occurs in the joints but always in the pristine substrate areas, except in butt joint samples prepared with sulfite paper. Tensile test also shows that paper impregnated with cellulose solution is stronger than the original substrate. X-ray microtomography and scanning electron microscopy reveal that dissolved cellulose fills the gaps between paper fibers, providing a morphological evidence for the mechanical interlocking adhesion mechanism, while scanning probe techniques provide a sharp view of different domains in the joints. Additionally, bonded paper is easily reconverted to pulp, which facilitates paper reprocessability, solving a well-known industrial problem related to deposition of adhesive aggregates (stickies) on the production equipment. 7 33
18750 18758 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) National Institute (INCT) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)