Effects of Sodium Montmorillonite on the Preparation and Properties of Cellulose Aerogels

Long, Linyu; Li, Fenfen; Weng, Yunxuan; Wang, Yu‐Zhong

doi:10.3390/polym11030415

Cited by 23 publications

(11 citation statements)

References 37 publications

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“…It could be seen from Figure 13b and 13c that the adsorption rate of n-MCPMA was slower than that of d-MCPMA, which might be due to the disordered arrangement of pore structure, resulting in the uneven oil absorption process and the slow adsorption rate. Carbon aerogel 140 14-26 [48] NFC/PVA/SAC 159 35-85 [49] Cotton cellulose aerogel 154 20-42 [50] Chitosan/Cellulose aerogel 152 14-28 [51] Sodium alginate/CNF 148 34 [52] Graphene/cellulose/silica 157 39-68 [53] NFC/OA/Fe 3 O 4 84 68 [54] TMCs/CNT/CMC 148 28 [55] Poly(lactic acid) foam 151 32 [56] Bamboo fibre aerogel 132 7-11 [57] Cellulose/montmorillonite No 4-7 [40] CNF/PVA/MMT 140 This work RONG ET AL.…”

Section: Hydrophobic Lipophilic and Absorption Capacitymentioning

confidence: 99%

Directional, super‐hydrophobic cellulose nanofiber/polyvinyl alcohol/montmorillonite aerogels as green absorbents for oil/water separation

Rong

Zhai

et al. 2021

IET Nanobiotechnology

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Nowadays, the problem of oil spill and organic solvent pollution has become more and more serious, and developing a green and efficient treatment method has become a research hotspot. Herein, the preparation of porous super-hydrophobic aerogel by directional freezing with cellulose nanofibre (CNF) as the base material, polyvinyl alcohol (PVA) as the cross-linking agent and montmorillonite (MMT) as the modifier and filler, followed by hydrophobic treatment with chemical vapour deposition is reported. The prepared composite aerogel presented three-dimensional inter-perforation network structure, low density (26.52 mg⋅cm À 3), high porosity (96.1 %) and good hydrophobicity (water contact angle of 140°). Notably, the composite aerogel has a good adsorption effect on different oils and organic solutions, and its adsorption capacity can reach 40-68 times of its initial weight. After complete adsorption, the aerogel could be easily collected. More importantly, the composite aerogel had high strength, whose compressive stress at 70 % strain reached 0.15 MPa and could bear over 1290 times its weight without deformation after 2 weeks. A new, green, simple and efficient absorbent for the adsorption of oils and organic solvents is provided. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Hydrophobic Lipophilic and Absorption Capacitymentioning

confidence: 99%

Directional, super‐hydrophobic cellulose nanofiber/polyvinyl alcohol/montmorillonite aerogels as green absorbents for oil/water separation

Rong

Zhai

et al. 2021

IET Nanobiotechnology

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“…Compared with the regenerated cellulose aerogel prepared by our previous report, the density of CMC aerogel is significantly reduced. Meanwhile, the compressive modulus is also reduced [26].…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Application of Carboxymethyl Cellulose-Carbon Nanotube Aerogels

Long

Shu

et al. 2019

Materials

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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.

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“…They obtained a sorption ratio of 7.97-10.63 g/g for vacuum pump oil and 8.98-11.44 g/g for linseed oil, and the highest results were presented by the samples with a medium starch concentration [6]. Long et al (2019) synthesized cellulose aerogels with sodium montmorillonite, and showed a sorption capacity between 4.5 g/g and 6 g/g for #48 and #220 lubricating oil [7]. Wang et al (2019) used hydrophobic alginate-based foams induced by zirconium ions for oil and organic solvents cleanup, and obtained a sorption capacity of 3.3-28.9 g/g [8].…”

Section: Removal Of Heavy Oil From Connate/deionized/seawater Mixturementioning

confidence: 99%

Chitosan–Starch Films Modified with Natural Extracts to Remove Heavy Oil from Water

Lozano-Navarro

Díaz-Zavala

Melo-Banda

et al. 2019

Water

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Chitosan films were used to remove heavy oil from connate water, deionized water, and seawater. In this research, chitosan-starch films were modified with natural extracts from cranberry, blueberry, beetroot, pomegranate, oregano, pitaya, and grape. These biodegradable, low-cost, eco-friendly materials show an important oil sorption capacity from different water conditions. It was observed that the sorption capacity has a clear correlation with the extract type, quantity, and water pH. In order to understand the physical and chemical properties of the films, they were analyzed according to their apparent density, water content, solubility, and swelling degree by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), gas chromatography-mass spectroscopy (GC-MS), and the determination of surface area using the Brunauer Emmett Teller (BET) method. The results indicate that chitosan-starch films modified with natural extracts can be successfully applied for environmental issues such as oil spill remedy.

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Effects of Sodium Montmorillonite on the Preparation and Properties of Cellulose Aerogels

Cited by 23 publications

References 37 publications

Directional, super‐hydrophobic cellulose nanofiber/polyvinyl alcohol/montmorillonite aerogels as green absorbents for oil/water separation

Directional, super‐hydrophobic cellulose nanofiber/polyvinyl alcohol/montmorillonite aerogels as green absorbents for oil/water separation

Fabrication and Application of Carboxymethyl Cellulose-Carbon Nanotube Aerogels

Chitosan–Starch Films Modified with Natural Extracts to Remove Heavy Oil from Water

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