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Study on melamine/bentonite polyurethane porous composite foam: Pb 2+ adsorption and mechanical properties
Author(s) -
Li TingTing,
Zhang Xiao,
Wang Zhike,
Ren HaiTao,
Peng HaoKai,
Shiu BingChiuan,
Lou ChingWen,
Lin JiaHorng
Publication year - 2021
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.5235
Subject(s) - adsorption , materials science , polyurethane , bentonite , composite number , melamine , porosity , composite material , freundlich equation , compressive strength , chemical engineering , chemistry , organic chemistry , engineering
In this paper, by adding melamine and bentonite to the polyurethane (PU) foam, a porous composite material with heavy metal adsorption properties is obtained. The cell size of the PU porous composite foam was affected by the addition of melamine and bentonite particles. With the increase of particles amount, the cell size decreased. The compression performance of the composite foam increased by 54% after adding 8 wt% melamine particles. The optimal adsorption conditions such as pH, adsorption time, and initial concentration of PU porous composites were also explored. Result shows that porous composite foam had a good removal effect on Pb 2+ . Moreover, the Langmuir model, the Freundlich model, and the adsorption kinetic model are used to evaluate the adsorption capacity of the porous composite foam. It is of great significance to obtain porous composite with good heavy‐metal adsorption and high‐strength performance.