Preparation and malachite green adsorption behavior of polyurethane/chitosan composite foam

Autor:	XX Li, YC Li, XJ Sun, LY Cai, Jr Li, X Tian, J Li
Rok vydání:	2014
Předmět:	Aqueous solution Materials science Polymers and Plastics Composite number General Chemistry law.invention Chitosan chemistry.chemical_compound Adsorption chemistry Magazine Chemical engineering law Materials Chemistry Malachite green Composite material Science technology and society Polyurethane
Zdroj:	Journal of Cellular Plastics. 51:373-386
ISSN:	1530-7999 0021-955X
DOI:	10.1177/0021955x14542538
Popis:	A series of Polyurethane/Chitosan composite foam with different chitosan content of 5–25 wt% was prepared, and their adsorption performance of malachite green (MG) in aqueous solutions was investigated by pH values, contact time, temperatures and chitosan content. It was observed that Polyurethane/Chitosan composite foam exhibited well-developed open cell structures. Malachite green adsorption capacities of the composite foam increased with the increment of chitosan content in composite foam. Polyurethane/Chitosan composite foam with 20% chitosan content exhibited a maximum removal capacity of 16.67 mg/g and 95.60% MG removal efficiency. In addition, MG adsorption capacities of composite foam increased with pH value increase, 30℃ was the optimum temperature, which affects the adsorption process, and the adsorption maximum was attained within 12 hours. The result of SEM showed the prepared composite foam possess well-developed open cell structures. The MG adsorption kinetics and equilibrium isotherm of the composite foam were well described with the pseudo-second order kinetic model and Langmuir isotherm model, respectively. This work provided an attractive adsorbent for removing of the hazardous materials from water.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eeb88be42288559dd6283593c6b267b7 https://doi.org/10.1177/0021955x14542538 Zobrazit plný text záznamu