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| 首页 >> 中国造纸杂志社 >> 国际造纸 >> 摘要 >> 《Paper and Biomaterials》2019年第2期摘要 |
| Polyoxometalate-loaded Nanocellulose Sponge as a Novel Catalyst for the Regioselective Hydroboration of Phenylacetylene |
| GuoQing Yang1, CongCong Zhang1, BiJia Wang1,2,*, ZhiPing Mao1,2, Hong Xu1,2, Yi Zhong1,2, XueLing Feng1,2 and XiaoFeng Sui1,2,* |
| Paper and Biomaterials 2019,4(2):1-9 |
| Preparation and Performance of Salt Tolerance and Thermal Stability Cellulose Nanofibril Hydrogels and Their Application in Drilling Engineering |
| XiongLi Liu1,3, An Wang1,3, ChunPing Wang1,3, JiaLei Qu1,3, YangBing Wen1,3,*, Bin Chen2, ZhongGuang Wang2, BinBin Wu2, ZhaoYang Yuan4 and Bing Wei5 |
| Paper and Biomaterials 2019,4(2):10-19 |
| Synergistic Adsorption by Biomass-based Fe-Al (Hydr)oxide Nanocomposite of Fluoride and Arsenic |
| DaYong Huang1,2, BoXuan Li1,*, Min Wu1,*, Shigenori Kuga1 and Yong Huang1,* |
| Paper and Biomaterials 2019,4(2):20-31 |
| Preparation of Photo-thermal Cellulose Nanocrystal-based Hydrogel |
| ZiHe Guo, Tao Ma and ShiYu Fu* |
| Paper and Biomaterials 2019,4(2):32-39 |
| Solvatochromic Probe Based on Nano-cellulose Membrane Coated with Zn-ter-pyridine Complex in a Layer-by-Layer Manner |
| XinPing Li1, 2, FaFa Song1, Meng Zhang1, BaiLiang Xue1, JingYi Nie1, ShunTian Jia1, YaoYu Wang3 and Zhao Zhang1, 2, 3,* |
| Paper and Biomaterials 2019,4(2):40-45 |
| The Effect of Lignification Process on the Bioconversion Efficiency in Moso Bamboo |
| JinSheng Nan, ZunQiang Han, XiaoJuan Yu and Kun Wang* |
| Paper and Biomaterials 2019,4(2):46-53 |
| Review on Cellulose Nanocrystal Assembly for Optical Applications |
| Dong Li, Na Feng, SiYuan Liu, Lin Gan* and Jin Huang* |
| Paper and Biomaterials 2019,4(2):54-62 |
| Industrialization Progress of Nanocellulose in China |
| MingZheng Wang1,2 and RuiTao Cha1,* |
| Paper and Biomaterials 2019,4(2):63-68 |
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| Polyoxometalate-loaded Nanocellulose Sponge as a Novel Catalyst for the Regioselective Hydroboration of Phenylacetylene |
| GuoQing Yang1, CongCong Zhang1, BiJia Wang1,2,*, ZhiPing Mao1,2, Hong Xu1,2, Yi Zhong1,2, XueLing Feng1,2 and XiaoFeng Sui1,2,* |
| 2019,4(2):1-9 |
| In this work, an amino-modified cellulose nanofiber sponge was prepared and used as a support for polyoxometalate (POM) catalysts with a high loading efficiency. Fourier transform infrared spectroscopy, thermogravimetric analysis, and energy-dispersive X-ray spectroscopy revealed that an Anderson-type POM, (NH4)4[CuMo6O18(OH)6]·5H2O was successfully immobilized on the sponge based on electrostatic interactions. Morphological analysis indicated that the POM-loaded sponge retained its porous structure and that the POM was homogeneously distributed on the sponge walls. The POM-loaded sponge exhibited excellent mechanical properties by recovering 79.9% of its original thickness following a 60% compression strain. The POM-loaded sponge was found to effectively catalyze the hydroboration of phenylacetylenes, yielding excellent conversion and regioselectivity of up to 96% and 99%, respectively. Its catalytic activity remained unchanged after five reuse cycles. These findings represent a scalable strategy for immobilizing POMs on porous supports. |
| [Abstract] [PDF] |
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| Preparation and Performance of Salt Tolerance and Thermal Stability Cellulose Nanofibril Hydrogels and Their Application in Drilling Engineering |
| XiongLi Liu1,3, An Wang1,3, ChunPing Wang1,3, JiaLei Qu1,3, YangBing Wen1,3,*, Bin Chen2, ZhongGuang Wang2, BinBin Wu2, ZhaoYang Yuan4and Bing Wei5 |
| 2019,4(2):10-19 |
| The poor salt tolerance, thermal stability, and environmental performance of petrochemicals can severely limit their applications in drilling engineering. In this study, cellulose nanofibril (CNF) hydrogels with improved salt tolerance and thermal stability were prepared, and their filtration performance was evaluated. The hydrogels were prepared through the simultaneous grafting of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and butyl acrylate (BA) onto the CNF surface through ceric ammonium-nitrate-induced radical polymerization. The modified and original CNF samples were characterized using Fourier Transform infrared spectroscopy (FT-IR) and rheological measurements. The FT-IR analysis results showed that both AMPS and BA were grafted onto the CNF backbone, affirming the successful preparation of the grafted CNFs. The rheological analysis results showed that the modified CNF hydrogels exhibited significantly improved salt tolerance, thermal stability, and “salt-thickening” effect. Moreover, the results of the fluid loss test showed that the modified CNF hydrogels exhibited a much better fluid loss control than the original CNF hydrogels. In addition, after adding 2% modified CNF hydrogels as a filtrate reducer in the drilling fluids prepared with a 6% combined salt solution, the filtrate loss was significantly reduced even after aging for 72 h at 160℃. |
| [Abstract] [PDF] |
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| Synergistic Adsorption by Biomass-based Fe-Al (Hydr)oxide Nanocomposite of Fluoride and Arsenic |
| DaYong Huang1,2, BoXuan Li1,*, Min Wu1,*, Shigenori Kuga1 and Yong Huang1,* |
| 2019,4(2):20-31 |
| Fe-Al (hydr)oxide nano-/micro-particles were well grown and dispersed on a wheat straw template, which was characterized by a scanning electron microscope (SEM) with energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and a vibrating sample magnetometer (VSM). The adsorption mechanism of the biomass-based Fe-Al (hydr)oxide nanocomposite was studied by the adsorption isotherms, which followed the Langmuir model better than the Freundlich and Temkin models. In particular, a synergistic adsorption by the mixed Fe-Al (hydr)oxide nano-/micro-particles based on the wheat straw was found, with higher maximum adsorption capacity (Q0) than that of the material containing only Fe3O4 or Al(OH)3 nano-/micro-particles, which was most obvious when the mole ratio of Fe to Al was 1:1. The degree of this unusual effect was reasonably determined by the departure between the experimental and calculated maximum adsorption capacity (Q0-Q0(cal)), which showed that the synergistic effect was most pronounced when the mole ratio of Fe to Al was approximately 1:1. The good adsorption capacity of the mixed Fe-Al (hydr)oxide nano-/micro-particles and the good dispersity by the wheat straw matrix were combined in the biomass-based Fe-Al (hydr)oxide nanocomposite. The nanocomposite material showed high adsorption capacity for both fluoride (F) and arsenic (As(III) and As(V)), and had the advantage of magnetic separation by tuning its compositions. |
| [Abstract] [PDF] |
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| Preparation of Photo-thermal Cellulose Nanocrystal-based Hydrogel |
| ZiHe Guo, Tao Ma and ShiYu Fu* |
| 2019,4(2):32-39 |
| Cellulose nanocrystal (CNC) prepared by hydrolysis of cotton linters with sulfuric acid was used to react with chloroauric acid to manufacture a gold nanoparticle/CNC composite. The composite was then graft-copolymerized with N-isopropylacrylamide to obtain a photo-thermal ultrafine gold nanoparticles/CNC-based hydrogel. The hydrogel was studied by performing scanning electron microscopy, and it was found that the prepared hydrogel had a network structure. The temperature of the hydrogel increased from 25℃ to 39℃ and its volume decreased by 30% when it was exposed to visible light (400~750 nm) for 1 h. The experiment results indicated that the prepared photo-thermal CNC-based hydrogel has thermal responsiveness and photo-thermal properties. |
| [Abstract] [PDF] |
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| Solvatochromic Probe Based on Nano-cellulose Membrane Coated with Zn-ter-pyridine Complex in a Layer-by-Layer Manner |
| XinPing Li1, 2, FaFa Song1, Meng Zhang1, BaiLiang Xue1, JingYi Nie1, ShunTian Jia1, YaoYu Wang3 and Zhao Zhang1, 2, 3,* |
| 2019,4(2):40-45 |
| Solvatochromic materials have recently attracted increasing attention owing to their great significance in the security and sensor fields. In this study, ultrafast explicit and implicit information was collected regarding a fluorescent nanocellulose membrane produced from nanocellulose membranes coated with a Zn-terpyridine complex (Zn-tpy) in a layer-by-layer manner. The fluorescent emissions of the nanocellulose membrane changed from yellow (CIE: x=0.37, y=0.45) to green (CIE: x=0.32, y=0.47) under a dichloromethane environment and 365-nm irradiation. Due to the ease of dichloromethane volatilization, fluorescent emissions quickly returned to the original state. These solvatochromic nanocellulose membranes, with ultrafast explicit and implicit information, exhibited valuable application prospects in anti-counterfeiting techniques. |
| [Abstract] [PDF] |
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| The Effect of Lignification Process on the Bioconversion Efficiency in Moso Bamboo |
| JinSheng Nan, ZunQiang Han, XiaoJuan Yu and Kun Wang* |
| 2019,4(2):46-53 |
| Recalcitrance of lignocellulosic biomass is closely related to the presence of lignin in secondary cell walls, which has a negative effect on enzyme digestibility, biomass-to-biofuels conversion, and chemical pulping. The lignification process and structural heterogeneity of the cell wall for various parts of moso bamboo were investigated. There were slight differences among three different column parts of moso bamboo in terms of chemical compositions, including cellulose, hemicelluloses, and lignin. However, the detailed analysis of the fractionated lignin indicated that the acid-soluble lignin was first biosynthesized, and the largest molecular weight value was detected from the bottom part of the moso bamboo, as well as the highest syringyl-to-guaiacyl ratio. Although the main -O-4 aryl ethers and resinol structures were clearly present in all lignin samples examined by NMR analysis, the relatively small lignin biomacromolecule in the top part of the moso bamboo lead to poor thermal stability. For the bioconversion process, no significant difference was found among all the moso bamboo samples, and the relatively higher hydrolysis efficiency was largely dependent on the low crystallinity of cellulose rather than the degree of lignin biosynthesis. |
| [Abstract] [PDF] |
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| Review on Cellulose Nanocrystal Assembly for Optical Applications |
| Dong Li, Na Feng, SiYuan Liu, Lin Gan* and Jin Huang* |
| 2019,4(2):54-62 |
| Cellulose nanocrystals (CNCs) can self-assemble in suspension to form chiral cholesteric structure of liquid crystal with unique birefringence phenomena, and the structural parameters strongly depend upon the aspect ratio, surface structure, and physicochemical properties of CNC, along with suspension media. Many attempts have been carried out to keep this cholesteric structure in solid state via removing solvent, such as slower solvent-evaporation, rapid vacuum-filtration, and spin-casting under centrifugal force. The solid-state iridescence of the cholesteric CNC arrays has been used as structural color, and showed a great potential for the coding and securing of optical information. Moreover, to promote practical applications of such structural iridescence, the cholesteric CNC arrays have been embedded into many kinds of substrates via in-situ reaction of monomers or physical blending with polymers. However, this kind of structural iridescences may lead to misreading information. The uniaxial-orientation assembly of CNC has thus been proposed via regulating external force fields of CNC self-assembly, and successfully achieved nanoparticle assembly-induced solid-state monochrome emission based on enhanced inelastic collision theory of CNC dipoles and photons. This method can eliminate the chiral arrangement of CNC and the corresponding iridescence, and the structural monochromaticity can contribute to enhancing the accuracy of optical information. Overall, the CNC can be controllably assembled as the ordered arrays in solid state and presented structural color, and support optical anti-counterfeiting strategies different from the fluorescent technologies. |
| [Abstract] [PDF] |
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| Industrialization Progress of Nanocellulose in China |
| MingZheng Wang1,2 and RuiTao Cha1,* |
| 2019,4(2):63-68 |
| Nanocellulose, a kind of cellulose with nanometer sizes, has drawn great interest in the pulp and paper industry due to its unique structure and excellent performance. It can be divided into five categories: nanocrystalline cellulose (NCC), nanofibrillated cellulose (NFC), bacterial cellulose (BC), electrospun cellulose nanofibers (ESC), and precipitation regenerated cellulose nanofibers (PRC). In this paper, we reviewed the industrialization progress of nanocellulose in China. Furthermore, we proposed that efficient and environmentally friendly preparation methods and high value utilization would be the focus of nanocellulose development. |
| [Abstract] [PDF] | |
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