Carbohydrate Polymers 181 (2018) 358–367 Contents lists available at ScienceDirect Carbohydrate Polymers journal homepage: www.elsevier.com/locate/carbpol Research paper Cellulose nanowhiskers improve the methylene blue adsorption capacity of chitosan-g-poly(acrylic acid) hydrogel a a a b Bruno C. Melo , Francisco A.A. Paulino , Varneir A. Cardoso , Antonio G.B. Pereira , c, a André R. Fajardo , Francisco H.A. Rodrigues Coordenação de Química, Universidade Estadual Vale do Acaraú (UVA), Campus da CIDAO, 62040-730 Sobral, CE, Brazil Engenharia de Bioprocessos e Biotecnologia, Universidade Tecnológica Federal do Paraná (UTFPR), 85660-000 Dois Vizinhos, PR, Brazil Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), 96010-900 Pelotas, RS, Brazil ARTICLE I NFO ABSTRACT Chemical compounds studied in this article: Cellulose nanowhiskers (CNWs, 90% crystalline) were used to enhance the adsorption capacity of chitosan-g- Chitosan (PubChem CID: 71853) poly(acrylic acid) hydrogel. The composites up to 20 w/w-% CNWs showed improved adsorption capacity to- Acrylic acid (PubChem CID: 6581) wards methylene blue (MB) as compared to the pristine hydrogel. At 5 w/w-% CNWs the composite presented N,N,Ń,Ń-Tetramethylenediamine (PubChem the highest adsorption capacity (1968 mg/g). The maximum removal of MB (> 98% of initial concentration CID: 8037) 2000 mg/L) was achieved quickly (60 min)
Carbohydrate Polymers – Elsevier
Published: Feb 1, 2018
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