APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Huan Liu,Fuxin Yu,Junyao Wang,Jianlang Shu,Minghui Sun,Zhida Li,Tinggang Zhang,Yu Liu,Guozheng Zhang
This study utilized natural sorghum straw as raw material, leveraging its material advantages of high cellulose content, low lignin and hemicellulose content, and long-fiber structure. By forming a hydrogen-bonded cross-linked network with polyvinyl alcohol (PVA), a high-performance piezoresistive sensor was developed to enhance its sensitivity and stability. Experimental results demonstrate that the sensor exhibits a sensitivity of 0.9 kPa − 1 under low-pressure conditions, 0.45 kPa − 1 under medium-pressure conditions, and further increases to 0.85 kPa − 1 under high-pressure conditions. Experimental data confirm the sensor’s long-term stability and sensitivity across the 10–120 kPa pressure range, with a minimum detection limit of 4.9 Pa. After 10,000 cyclic tests, it maintains excellent repeatability under repeated loading conditions, with a response recovery time of 25–50 ms. Furthermore, manufacturing costs were significantly reduced, achieving total cost savings of 96 %. The sensor has been successfully applied in detecting signals such as human motion, electrocardiograms, and sound, as well as in monitoring signals from pressure sensor arrays, demonstrating reliable practical performance. In summary, the piezoresistive sensor utilizing natural sorghum straw cellulose as its core conductive structure provides an efficient, reliable, and low-cost solution for pressure signal detection, promising to advance technological progress in related fields.
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Fukun Niu,Jiafei Wu,Ru Song,Jiahui Lu,Zijing Ou,Yibo Zhang,Tingxue Li,Hongmei Qin,Zhuqun Shi,Chuanxi Xiong,Quanling Yang
The development of the Internet of Things (IoT) is accompanied by the innovation of wireless communication technology. Currently, high-frequency communications urgently require cost-effective and environmentally friendly low dielectric radio frequency substrates. Paper is one of the most mature industrial products, derived from cellulose. Due to its rich pore structure, paper exhibits a low relative permittivity. In this work, TEMPO-mediated oxidation was employed to enhance the water dispersibility of cellulose pulp and the handsheets were prepared by vacuum filtration and hot-press drying. The strong interaction between oxidized pulp fibers resulted in handsheets with a substantially reduced forming pressure of ∼1.2 kPa and tensile properties comparable to those of commercial copy paper. The oxidation degree of the oxidized pulp directly influenced the porosity and relative permittivity of the handsheets. The relative permittivity of handsheets can be readily adjusted between low-k (εr ∼ 3) and ultra-low-k (εr ∼ 2) by blending oxidized pulps or stacking filter cakes. The bottom surface of the handsheets manifested considerable compactness, thereby ensuring printability. Finally, the handsheets with printed silver patterns can be safely disposed of by incineration or redispersion, demonstrating notable competitiveness in the application of low-cost and disposable Sub-6 GHz printed substrates.
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Dongqing Ding,Mengyun Chen,Wei Li,Zhousong Luo,Yongpei Xu,Wenhui Zong,Wenzhong Li,Jian Chen
Wilson's disease is a type of neurogenetic disease associated with a disorder of copper metabolism. In general, de‑coppering drugs such as copper chelators and zinc preparations are used to treat this condition. However, the effects of zinc preparations are slow, and long-term use of copper chelators results in some adverse reactions (e.g., nephrotoxicity). In this study, we developed a novel modified microcrystalline cellulose-based adsorbent (MCC-NS) as a gastrointestinal-restricted sequestrant to remove excess copper from the body. Scanning electron microscopy and X-ray photoelectron spectroscopy were performed to characterize the resulting adsorbent (also called de‑coppering cellulose). These methods revealed the successful immobilization of amino and sulfhydryl groups on the surface of MCC. In addition, de‑coppering performance tests revealed the high copper affinity of MCC-NS. This adsorbent removes excess serum copper in a timely manner in Cu-overdosed mice and can reduce copper deposition in tx-j mice, thereby alleviating liver damage. In vivo biosafety evaluation experiments revealed that long-term MCC-NS administration did not injure the primary organs of the mice. Collectively, our findings suggest the potential of as-prepared de‑coppering cellulose as an oral gastrointestinal-restricted copper sequestrant for treating Wilson's disease with few adverse reactions.
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产品关联
DOI
PubMed
高影响因子
Journal of Biobased Materials and Bioenergy
·
2014
·Vol. 8
·期 6
·610-617
·
IF 0.586
Zhang Min,Ding Cuicui,Chen Lihui,Huang Liulian,Yang Haiyang
Collagen/cellulose bead was prepared by the reconstitution of collagen and cellulose (collagen/cellulose mass ratio = 1/6) from 1-ethyl-3-methylimidazolium acetate. Based on this, a novel bio-adsorbent, bayberry tannin immobilized collagen/cellulose (BT-CC) bead, was obtained via the
reaction of collagen with bayberry tannin. The adsorption properties of BT-CC to Cu(II) in aqueous solution were investigated. Results from SEM and XRD indicated the well preservation of structure after the adsorption of Cu(II). Furthermore, the maximum decomposition temperature of BT-CC after
the adsorption of Cu(II) was even increased for ∼7 °C, confirming the stability of BT-CC. The adsorption of Cu(II) on BT-CC displayed pH-dependence and the maximum adsorption was obtained at pH = 5.0. Based on the mass content of collagen, the maximum adsorption capacity of BT-CC was
0.73, 0.96 and 1.12 mmol/g at 298, 308 and 318 K, respectively, according to the experimental adsorption isotherms. In kinetics studies, the adsorption equilibrium at both of 298 and 318 K reached within ∼300 min, and the experimental data could be well fitted by the pseudo-first-order
rate model. Furthermore, good adsorption properties of BT-CC remained after three cycles of adsorption–desorption. These results indicated that high stability, great adsorption capacity and good reusability of BT-CC as the adsorbent to Cu(II) could be obtained.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Hongxiang Xie,Zhufan Zou,Haishun Du,Xinyu Zhang,Xumei Wang,Xianghao Yang,Hui Wang,Guangbi Li,Long Li,Chuanling Si
A mild and efficient approach for the preparation of cellulose nanocrystals (CNCs) was developed by using mixed H 2 SO 4 /Oxalic acid hydrolysis. In this process, the mixed acid of sulfuric acid, oxalic acid and H 2 O in an optimal mass ratio of 1:5:4 was used to produce CNCs from bleached eucalyptus kraft pulp (BEKP) at 80 °C for 2–5 h. The CNCs with a diameter range of 5–20 nm and a length range of 150–400 nm were obtained at a high yield (>70%) and showed excellent dispersion stability in water and good thermal stability. Moreover, the dosage of sulfuric acid can reduce to 2.4 g/g CNCs in this mixed acid hydrolysis, which is far lower than that of the typical 64% sulfuric acid hydrolysis (55 g/g CNCs, tested in this work). In addition, 91±2% of oxalic acid could be recovered by a simple recrystallization operation.
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2015
·
IF 2.837
Peng Zhang,Shi-Jia Dong,Hui-Hui Ma,Bi-Xian Zhang,Yu-Fei Wang,Xiao-Mei Hu
Lignocellulosic biomass is increasingly being promoted as an environmentally and economically sustainable fuel. However, the complex structure of lignocellulose makes it difficult to be fractionated, which limits its conversion into valuable products. In this work, a series of functional acidic ionic liquids (ILs) with a simple synthetic procedure were prepared. Fractionation of corn stover into cellulose, hemicellulose and lignin was successfully performed in ultrasound-assisted ILs at a low reaction temperature of 70 °C for 3 h followed by alkaline extraction. IL-isolated lignin, alkaline lignin, hemicellulose and cellulose were obtained in good yields and their chemical properties were analyzed by FTIR. Significantly, a good yield of IL-isolated lignin was obtained, which accounted for 60.48% of the original lignin. The IL-isolated lignin was S-G-H type indicating by 13 C NMR and 13 C– 1 H correlation 2D NMR (HSQC) analysis. Enzymatic hydrolysis of cellulose was performed successfully. A high yield of 97.77% reducing sugar was achieved. Glucose and cellobiose were measured by HPLC analysis, which accounted for 92.55% of cellulose conversion. Both of the hydrogen bond capability and the acidity of ILs contributed to achieve the effective fractionation. These ILs have a great potential for the preparation of biofuel.
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DOI
高影响因子
CELLULOSE
·
2018
·Vol. 26
·期 2
·1157-1167
·
IF 3.809
Tang Lirong,Hong Biyun,Li Tao,Huang Biao
Bilayer films were fabricated based on natural-based and biocompatible polymers such as esterified cellulose nanocrystals (ECNCs) and shellac, aiming for use in buccal drug delivery. Baicalin was used as the model drug. The swelling properties, drug loading and mechanical properties of films were evaluated and further characterized for mucoadhesion and in vitro drug release properties. The film (F2) containing ECNCs 45%, shellac 25% and polyethylene glycol 30% shows the best properties for the development of the film formulation. The swelling capacity of films was in the range of 36.5 ± 4.1–279.2 ± 14.1%. In vitro drug release shows that anomalous transport behavior indicates that transport includes drug diffusion and polymer relaxation. For film F2, the tensile strength and adhesion strength reaches to the maximum value of 21.57 ± 0.83 MPa and 0.073 ± 0.004 N, respectively. The interfacial interactions between drug and film components were confirmed by FTIR and XRD.
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DOI
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 8
·4439-4453
·
IF 6.123
Li Yinan,Li Huixin,Huang Jin,Huang Liulian,Chen Lihui,Ni Yonghao,Zheng Qinghong
A highly transparent ZnO/cellulose composite membrane with UV sensing and shielding abilities was prepared via a facile blending method. ZnO nanoparticles (ZnO NPs) without additional surface modification are uniformly dispersed in the regenerated cellulose (RGC) matrix through the N-methyl-morpholine-N-oxide (NMMO) dissolution of cellulose. Agglomeration of the ZnO NPs is effectively minimized, thanks to the strong hydrogen bonds between ZnO NP and cellulose. The optimized ZnO/RGC membrane exhibits not only high a shielding ratio of 97.67 ± 0.11% for UV lights (< 360 nm) but also high transparency of 87.12±1.55% in the visible light region, which is comparable to traditional plastic products. Benefiting from the high photoelectric performance of ZnO NPs, a UV sensor and a UV blocker were integrated into the same device. The as-fabricated ZnO/RGC membrane, with sensitive UV detecting and effective blocking, as well as the rich availability of cellulose as raw material and its biodegradable nature, is an ideal candidate for high-performance UV detection and protection applications. Graphical abstract
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DOI
高影响因子
FUEL
·
2019
·
IF 5.128
Xiaowei Bai,Jian Li,Chenxi Jia,Jingai Shao,Qing Yang,Yingquan Chen,Haiping Yang,Xianhua Wang,Hanping Chen
In this study, a new-type of Na/Fe solid acid catalyst was synthesized to achieve efficient conversion of cellulose into furfural. The influence of Na/Fe mass ratios (0.05–2%), pyrolysis temperature (350–750 °C), and catalyst to cellulose ratio (0.2:1–20:1) was investigated through pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS), and the structure of Na/Fe catalyst was characterized with various approaches. Through scanning electron microscopy (SEM), the morphologies of the catalysts were found to exhibit rod-like, prismatic, spherical, and amorphous shapes with increasing Na/Fe. The results indicated that the selectivity of furfural increased with increasing Na/Fe ratio, and reached the highest value (61.4%) at a Na/Fe ratio of 1.42, after which it decreased with further increases in the Na/Fe ratio. Higher temperature and higher catalyst to biomass ratio are favorable for furfural formation, but exceedingly high temperature and catalyst to biomass ratio inhibit its formation. The maximum furfural yield could be achieved at 550 °C and catalyst to cellulose ratio of 10. The proposed catalytic pathway of cellulose pyrolysis for furfural is the promotion of the conversion of glucose monomers into dehydrated sugars such as LGO and DGP, which undergo secondary cracking to form furfural.
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2014
·
IF 2.822
Qijun Meng,Hailong Li,Shiyu Fu,Lucian A. Lucia
Cellulose nanofibrils have become increasingly prized as a raw material toward the preparation of composites due to their specific surface character and biocompatibility. TEMPO-mediated oxidation with post-mechanical treatment has been proposed as a promising method for the preparation of cellulose nanofibrils from cellulosic raw materials. In the current study it was found that the native hemicellulosic components in the raw material played a pivotal chemical role on the kinetics of generation of TEMPO-oxidized cellulose nanofibrils (TOCNs), as well as on thermal stability, and transmittance . The removal of xylans from the original feedstock facilitated not only an increase in both the carboxylate content and water retention value of the TEMPO-oxidized fibers, but also improved the transmittance of subsequently obtained TOCNs suspensions. It was also determined that the presence of xylans in the cellulosic feedstock hindered chemical accessibility through a barrier mechanism in which the TEMPO-mediated oxidation reaction rate was reduced.
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Shengbin Shi,Yuanfeng Wu,Mengting Zhang,Zongqi Zhang,Olayinka Oderinde,Lijing Gao,Guomin Xiao
The conversion of cellulose to levulinic acid (LA) and other platform chemicals is a promising route to solve the energy crisis. For this purpose, a series of new SO 3 H-functionalized ionic liquids (ILs), containing different halogen-anions were synthesized and applied for catalytic conversion of cellulose to LA. The structure, thermal stability, and acidity of SO 3 H-functionalized ILs were characterized by Nuclear magnetic resonance (NMR) spectra, Fourier-transform infrared (FT-IR), High resolution mass spectrometry (HRMS), thermogravimetric analysis (TGA), and Hammet acidity method. The results revealed that as the size of halogen anions increased, the Hammett acidity gradually increased from SO 3 H-functionalized ILs containing fluorine- to chlorine- and then to bromine-anions. When SO 3 H-functionalized ILs were used as a catalyst for the production of LA from cellulose, the yield of LA gradually increased as the size of halogen-anions increased from fluorine- to chlorine- and then to bromine-anions. Among the SO 3 H-functionalized ILs, 1,1-bis(3-(4-sulfobutyl)imidazolium-1-yl)butylene bromine ([BSim]Br) exhibited the best catalytic activity with 76.5% yield of LA in cellulose/[BSim]Br/H 2 O ( m / m / m = 1:9:8) reaction system at 180 °C for 20 min, which was the highest yield compared to previous literature reports using ILs as catalyst. Besides, the [BSim]Br was easily recovered and showed high catalytic activity after five cycles. The efficient catalyst, [BSim]Br is then proposed to have a great potential for mass production of LA from biomass.
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DOI
高影响因子
CELLULOSE
·
2019
·Vol. 26
·期 17
·9255-9268
·
IF 3.917
Liu Yixin,Liu Lin,Li Zhen,Zhao Yinan,Yao Juming
Abstract Novel, flexible, smart cellulose nanocomposite plates were fabricated by coating graphene nanoplate (GnPs) solution on the surface of cellulose sol, followed by hot pressing, in which GnPs was directly exfoliated and dispersed by PVP as exfoliating and dispersing agent. The structure, properties, and dual sensing (strain and pressure) of the resultant cellulose/GnPs nanocomposite plates (CGP) were systematically investigated. The formed conductive graphene network within the cellulose substrate, and the strong interfacial adhesion between cellulose and GnPs endowed the CGP excellent electromechanical properties, i.e. low electrical resistance (< 270 Ω cm), stable sensitivity on strain (GF 5.87) and pressure (S 0.037 kPa −1 ), good durability (> 1000 loading/unloading cycles). This work provided a green and facile approach to fabricate smart cellulose sensor responding to different external stimuli like stretch and compress by electrical resistance changes. Graphic abstract
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DOI
高影响因子
危险品化学品经营许可证（带存储）