Aminosilane-grafted spherical cellulose nanocrystal aerogel with high CO2 adsorption capacity

Zhang, Tianmeng; Zhang, Yang; Hua, Jiang; Wang, Xiaoyu

doi:10.1007/s11356-019-05068-3

Cited by 46 publications

(27 citation statements)

References 48 publications

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“…Cellulose fibrils and CNC can self-assemble into various structures to produce materials with different properties and applications (Kontturi et al 2018). Some of these materials, which find broad applications in various fields can be easily prepared by evaporating the solvent in cellulose dispersions or by freeze drying (Bayer et al 2016;Honorato-Rios et al 2018;Schütz et al 2015;Zhang et al 2019;France et al 2017).…”

Section: Evaporation Simulationsmentioning

confidence: 99%

A novel supra coarse-grained model for cellulose

et al. 2020

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Cellulose being the most widely available biopolymer on Earth is attracting significant interest from the industry and research communities. While molecular simulations can be used to understand fundamental aspects of cellulose nanocrystal selfassembly, a model that can perform on the experimental scale is currently missing. In our study we develop a supra coarse-grained (sCG) model of cellulose nanocrystal which aims to bridge the gap between molecular simulations and experiments. The sCG model is based on atomistic molecular dynamics simulations and it is developed with the forcematching coarse-graining procedure. The validity of the model is shown through comparison with experimental and simulation results of the elastic modulus, self-diffusion coefficients and cellulose fiber twisting angle. We also present two representative case studies, self-assembly of nanocrystal during solvent evaporation and simulation of a chiral nematic phase ordering. Finally, we discuss possible future applications for our model.

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Section: Evaporation Simulationsmentioning

confidence: 99%

A novel supra coarse-grained model for cellulose

et al. 2020

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“…Therefore, we know that the thermal stability of CNC was improved after amino modification. This may be due to the destruction of cellulose glycoside bonds in CNC with the increased of temperature, and the formation of SiO2 during thermal degradation of silicon elements in AEAPMDS-CNC prevented its further degradation [22]. This also indirectly proved that AEAPMDS had been successfully grafted onto the cellulose chain of CNC.…”

Section: Analysis Of Thermal Stabilitymentioning

confidence: 87%

“…Furthermore they grafted nanofibrillarized cellulose with Fenton reagent, which increased the adsorption capacity of nanocellulose for heavy metals [21]. Additionally, the use of nanocellulose grafted with amino acids as a CO 2 adsorbent has become one of the key research directions [22,23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Aminosilane Grafted Cellulose Nanocrystal Modified Formaldehyde-Free Decorative Paper and its CO2 Adsorption Capacity

Zhu

Zhang

et al. 2019

Polymers

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As one of the main consumables of interior decoration and furniture, decorative paper can be seen everywhere in the indoor space. However, because of its high content of formaldehyde, it has a certain threat to people’s health. Therefore, it is necessary to develop and study new formaldehyde-free decorative paper to meet the market demand. In this work, we have obtained formaldehyde-free decorative paper with high CO2 adsorption capacity. Here, cellulose nanocrystals (CNC) were prepared by hydrolyzing microcrystalline cellulose with sulfuric acid. The N-(2-aminoethyl) (3-amino-propyl) methyldimethoxysilane (AEAPMDS) was grafted onto the CNCs by liquid phase hydrothermal treatment, and the aqueous solution was substituted by tert-butanol to obtain aminated CNCs (AEAPMDS-CNCs). The as-prepared AEAPMDS-CNCs were applied to formaldehyde-free decorative paper by the spin-coating method. The effects of various parameters on the properties of synthetic materials were systematically studied, and the optimum reaction conditions were revealed. Moreover, the surface bond strength and abrasion resistance of modified formaldehyde-free decorative paper were investigated. The experimental results showed that AEAPMDS grafted successfully without destroying the basic morphology of the CNCs. The formaldehyde-free decorative paper coated with AEAPMDS-CNCs had high CO2 adsorption capacity and exhibited excellent performance of veneer to plywood. Therefore, laminating the prepared formaldehyde-free decorative paper onto indoor furniture can achieve the purpose of capturing indoor CO2 and have a highly potential use for the indoor decoration.

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“…(O H stretching vibration) 29 than that of the CNC, assigning to the partially consumption of hydroxyl-groups of CNC during the modification process. Meanwhile, the peak intensities at around 2907 cm À1 (symmetric-and asymmetric-stretching vibrations of C H) were obviously increased, two new peaks at $1100 cm À1 ( Si O Si or Si O C stretching vibration) and 910 cm À1 (epoxy group) appeared in GPTMS-CNC.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 93%

Fabrication of high transparent, mechanical strong, and flame retardant waterborne polyurethane composites by incorporating phosphorus‐silicon functionalized cellulose nanocrystals

Huang

et al. 2021

J of Applied Polymer Sci

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To manufacture transparent waterborne polyurethane composite coatings that possess desirable mechanical and flame retardancy properties is still a challenge. Herein, we first synthesized phosphorus-silicon functionalized cellulose nanocrystals (FCNC) filler, and further introduced it into waterborne polyurethane (WPU) matrix to prepare composite. The phosphorus-silicon-containing components were grafted covalently on the surface of FCNC, and the FCNC showed good dispersion level in water and WPU matrix. Moreover, the inserted FCNC could not only maintain the high transparency of WPU-FCNCs composites, but also remarkably enhancing the mechanical and flame retardancy performances. Noticeably, the WPU-FCNC3 composite containing 3 wt% of FCNC showed balanced mechanical (σ b = 16.7 MPa, ε b = 557.5%), limiting oxygen index (22.9%), and a UL-94 rating of V-2 among prepared films. Additionally, WPU-FCNC3 composite exhibited significantly reductions in heat release during combustion, and also showed a high transmittance of 92.2%. The present research supplies promising way for developing transparent, toughness, and flame retardant composite coatings.

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Aminosilane-grafted spherical cellulose nanocrystal aerogel with high CO2 adsorption capacity

Cited by 46 publications

References 48 publications

A novel supra coarse-grained model for cellulose

A novel supra coarse-grained model for cellulose

Synthesis and Characterization of Aminosilane Grafted Cellulose Nanocrystal Modified Formaldehyde-Free Decorative Paper and its CO2 Adsorption Capacity

Fabrication of high transparent, mechanical strong, and flame retardant waterborne polyurethane composites by incorporating phosphorus‐silicon functionalized cellulose nanocrystals

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