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Open AccessArticle

Fabrication and Application of Carboxymethyl Cellulose-Carbon Nanotube Aerogels

1
School of Materials and Mechanical Engineering, Beijing Technology & Business University, Beijing 100048, China
2
Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(11), 1867; https://doi.org/10.3390/ma12111867
Received: 23 May 2019 / Revised: 3 June 2019 / Accepted: 7 June 2019 / Published: 9 June 2019
(This article belongs to the Section Porous Materials)
In this study, composite aerogels with excellent mechanical properties were prepared by using carboxymethyl cellulose (CMC) as raw materials, with carboxylic carbon nanotubes (CNTs) as reinforcement. By controlling the mass fraction of CNTs, composite aerogels with different CNTs were prepared, and the surface morphology, specific surface area, compressive modulus, density and adsorption capacities towards different oils were studied. Compared to the pure CMC aerogel, the specific surface areas of CMC/CNTs were decreased because of the agglomeration of CNTs. However, the densities of composite aerogels were lower than pure CMC aerogel. This is because the CNTs were first dispersed in water and then added to CMC solution. The results indicated that it was easy for the low CMC initial concentration to be converted to low density aerogel. The compressive modulus was increased from 0.3 MPa of pure CMC aerogel to 0.5 MPa of 5 wt % CMC/CNTs aerogel. Meanwhile, the prepared aerogels showed promising properties as the adsorption materials. Because of the high viscosity, liquid possesses strong adhesion to the pore wall, the adsorption capacity of the CMC aerogel to the liquid increases as the viscosity of the liquid increases. View Full-Text
Keywords: aerogel; carboxymethyl cellulose; freeze drying; compressive modulus aerogel; carboxymethyl cellulose; freeze drying; compressive modulus
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MDPI and ACS Style

Long, L.; Li, F.; Shu, M.; Zhang, C.; Weng, Y. Fabrication and Application of Carboxymethyl Cellulose-Carbon Nanotube Aerogels. Materials 2019, 12, 1867.

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