POLYMER COMPOSITES
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2024
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IF 4.8
Jingliang Xu,Zhiyuan Wang,Asraful Alam,Leiyu Liu,Shen Zhang
This study presents a novel hydrophobic lignocellulosic bioplastic from corn stover reinforced by oxidized cellulose and in situ regenerated lignin. Cellulose-lignin mixture as a matrix was obtained by acid-recyclable deep eutectic solvent (DES) pretreatment of corn stover in mild conditions. Triethoxy(octyl)silane (C 14 H 32 O 3 Si) was employed to improve the water stability of the bioplastic by vapor deposition. The results show that the hydrophobic bioplastic has a high tensile strength, measuring 62.36 MPa. The water contact angle of the bioplastic was increased from 8.50° to 121.9° after hydrophobic modification. We prepared oxidized cellulose-reinforced cellulose paper by different particle size distributions of oxidized cellulose to investigate the reinforcement of oxidized cellulose. The tensile strength of oxidized cellulose cellulose paper increased from 14.41 to 21.18 MPa with the addition of oxidized cellulose. The zeta potential of oxidized cellulose is −47.99 mV, which shows a more negative charge due to carbonyl groups. The repulsive force of oxidized cellulose contributes to the formation of a brick-and-mortar microstructure with cellulose-lignin mixture. It demonstrates that oxidized cellulose can act as bio-adhesives and has a good toughening effect on the mechanical properties of bioplastic. Highlights Lignocellulosic bioplastic was prepared by DES pretreatment of corn stover. Oxidized cellulose was used to reinforce the lignocellulosic bioplastic. The tensile strength of the bioplastic was 62.36 MPa after the reinforcement process. Trieth-oxy(octyl)silane was employed to improve water stability. The water contact angle of the bioplastic was increased from 8.50° to 121.9°.
研究领域:
材料科学
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生物化学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Danish Iqbal,Waqar Iqbal,Raza Ullah,Renhai Zhao,Naveed Iqbal,Xin Ning
A novel environmentally-friendly conjugate structural membrane, composed of cuprammonium cellulose (CC), polyethylene oxide (PEO), and polyacrylonitrile (PAN), was fabricated using conjugate electrospinning. Adsorption of ciprofloxacin (CIP) from water was achieved using the conjugated membrane (CC-PAN). By combining PEO and PAN with CC, the membrane's mechanical strength was significantly enhanced, and notably improved its selective adsorption capability for antibiotics in both organic and inorganic systems. The CC-PAN membrane demonstrated high adsorption capacity for ciprofloxacin (CIP), reaching a maximum of 70.7 mg/g. The adsorption ability of CC-PAN towards CIP remained unaffected even at low CIP concentrations of 5 ppm in tap water. The adsorption mechanisms of CC-PAN onto CIP were extensively investigated by combining adsorption kinetics, thermodynamics, and isotherms. Spectroscopic methods were further employed to explore the interactions at various pH levels from 2 to 10. The adsorption capacity revealed a clear pH dependence. Specifically, at pH < 6.4, electrostatic attraction, interactions between electron donors and acceptors (likely hydrogen bonding), were the most predominant interactions. Furthermore, CC-PAN exhibited excellent stability, retaining 68 mg/g of its original adsorption capability during five successive adsorption-desorption repetitions. In addition to CIP, CC-PAN could also effectively remove tetracycline (TC) and trimethoprim (TMP). Based on these vital characteristics, CC-PAN demonstrates potential as an effective material for removing antibiotics from water through adsorption.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
BIOCATALYSIS AND BIOTRANSFORMATION
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2024
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IF 1.4
Yuyang Zhou,Rongchen Mang,Huiyi Long,Yamiao Li,Hua Zhou,Dingqiang Lu
Dioctyl sebacate is a long carbon chain dibasic acid ester with methylene as the main body. It is widely used in plasticizers because of its good cold resistance and high viscosity. And it has excellent properties of non-toxicity and easy biodegradation, so it can be used as a potential new green bio-based plasticizer. At present, most of the preparation methods of dioctyl sebacate are chemical methods, which have many by-products and cause environmental pollution. In this article, cellulose microspheres were used as a carrier to immobilize Candida antarctica lipase B (CALB) to catalyse the esterification of sebacic acid and n-octanol to prepare dioctyl sebacate. Through single factor experiments, the lipase immobilized on cellulose microspheres was optimized to determine the best process conditions: add 500 µL CALB to the erlenmeyer flask, and then add 0.02 mol/L PBS buffer (pH 8.0). After being prepared into a 5 mL system, 0.1 g of cellulose microspheres were added as a carrier and reacted for 3 h at 35 °C and 180 r/min. Added 0.5 vt% polyethylene glycol diglycidyl ether (PEGDEG) to the system for crosslinking. The final immobilization rate of lipase immobilized on cellulose microspheres was 80.06%, and the enzyme activity was 288.07 U/g. Using the cellulose-immobilized lipase as a catalyst, in the toluene system, the molar ratio of n (sebacic acid)/n (n-octanol) substrate was 1:3.5, the amount of immobilized enzyme was 0.04 g, 4 Å molecular sieve 1.5 g, 40 °C, and 150 r/min for 30 h, the conversion rate of dioctyl sebacate was 76.45%.
研究领域:
生物催化
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化学工程
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绿色化学
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材料科学
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DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 4
·2651-2656
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IF 4.6
Wenna Ge,Quanmao Wei,Xu Wang,Chenguang Lu,Hu Han,Yahua Liu
The ability to convert moisture signals into electrical signals through contactless control underpins a wide range of applications, including health monitoring, disaster warning, and energy harvesting. Despite its potential, the effective utilization of low-grade energy remains challenging, as it often requires complex device architectures that limit scalability and integration, particularly in wearable technologies. Here, we present a soft, flexible moisture-electric converter made from cellulose nanocrystals and polyvinyl alcohol composite films, designed for a novel touchless interactive platform. The device autonomously generates an electric output voltage of 200–700 mV in response to ambient moisture variations without requiring an external energy source. Its design, featuring a soft-adhered conductive carbon strip coupled with the composite film, provides high flexibility and portability. This configuration facilitates the creation of a non-contact control interface that seamlessly interacts with biological moisture from the human body, demonstrated by a mask that detects breathing conditions and a panel that measures contact distance. These advancements offer a promising pathway for developing flexible, intelligent electronic devices for wearable and touchless technologies.
研究领域:
材料科学
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生物医学工程
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能源技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2024
·Vol. 59
·期 24
·10987-10997
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IF 3.5
Ao Haiyong,Duan Keke,Zhang Dongxue,Xun Xiaowei,Feng Fangfang,Liu Huiwen,Li Jiaxin,Li Yaqiang,Wan Yizao
Bacterial cellulose (BC) with excellent flexibility and biocompatibility has aroused great attention for wound healing. However, the surface inertness of BC nanofibers tremendously hindered its biofunctionalized to improve the antibacterial ability and cytocompatibility. Herein, the biofunctionalized BC was fabricated by in situ growing a uniformly polydopamine (PDA)/polyethyleneimine (PEI) coating and grafting bacitracin (BA) on the coating (BA-PPBC). The results confirmed that the BA-grafted PDA/PEI coating was distributed uniformly on the surface of BC nanofibers, and the natural three-dimensional pore structure and other physical properties of pristine BC were retained. Compared to BC, the obtained BA-PPBC materials exhibited excellent antibacterial activities against the adhesion and colonization of S. aureus and MRSA . Moreover, the BA-PPBC not only had no obvious cytotoxicity to NIH-3T3 cells, but also improved the adhesion, proliferation, and spread out of cells. This work provides a biofunctionalized BC dressing to simultaneously meet the requirements of wound healing.
研究领域:
生物材料学
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医学工程
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伤口愈合研究
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Liping Wang,Yukun Li,Lei Ye,Chaohui Zhi,Tao Zhang,Ming Miao
This study explored the structure and performance of starch-based antibacterial films reinforced with black tea cellulose nanocrystals (BT-CNCs). The optimal addition amount of BT-CNCs is 5 % (w/w Starch). This nanocrystal-infused film, incorporating chitosan (CS), ε-polylysine (ε-PL), and zinc oxide nanoparticles (ZnONP) as antibacterial agents, exhibited a smooth, continuous surface. The addition of BT-CNCs and antibacterial agents did not change the group characteristic peaks of the film, but changed the crystallinity slightly. The films, namely St, St/CNCs, St/CNCs/CS, and St/CNCs/ε-P, maintained high light transmittance (above 80 %), except for the St/CNCs/ZnONP film, which effectively shielded UV radiation. The combined use of antibacterial agents and BT-CNCs enhanced the water and oxygen barrier properties of the film. Notably, the St/CNCs/CS film exhibited the lowest solubility (17.74 % ± 0.36) and the highest tensile strength (14.23 ± 0.16 MPa). The antibacterial efficacy of the films decreased in the order of St/CNCs/ZnONP, St/CNCs/ε-PL, and St/CNCs/CS, with a more pronounced inhibitory effect on E. coli compared to S. aureus . This study marries natural waste recycling with cutting-edge food packaging technology, setting a new benchmark for the development of sustainable packaging materials .
研究领域:
食品科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Wenxin Zhang,Min Xue,Jing Fan,Lili Qiu,Wenxiang Zheng,Yangyang Liu,Zihui Meng
As a widespread air pollutant, volatile organic compounds (VOCs) are harmful to the human body’s skin, nervous system, and respiratory system. Low-cost, extensive, and continuous detection of VOCs is of great significance to human health. We infiltrated and coated cellulose acetate on the inverse opal photonic crystal skeleton of methylcellulose–polyvinyl alcohol–graphene oxide to construct a degradable, high-toughness cellulose VOC sensor. Cellulose acetate enhances the response to VOCs and achieves a highly selective response to acetone vapor due to the smaller Flory–Huggins parameter with acetone. This work proposes a general, simple, easy-to-use, and highly selective photonic crystal VOC sensor development strategy. Calculated from the Flory–Huggins solution theory, a suitable polymer was selected to modify the inverse opal photonic crystal framework and achieve high selectivity detection.
研究领域:
材料科学
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环境科学
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生物医学工程
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DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
Tao Shi,Yun Lu
As one of the most abundant renewable and biodegradable materials in nature, cellulose is difficult to dissolve in common organic and inorganic liquids. Here, a series of regenerated cellulose films were prepared by using a specific tetra-butylammonium hydroxide TBAH/H 2 O/DMSO ternary solvent system. Especially, the fluorescent cellulose film was obtained successfully via a ring-opening grafting reaction between a modified fluorescein molecule with 3-expoxypropoxy and cellulose. The fluorescent cellulose films exhibited excellent fluorescence stability and pH sensitivity to the aqueous solutions with different degree of acid and alkaline. Moreover, the anisotropic fluorescein cellulose film was obtained for the first time by stretching and further drying the initial fluorescence cellulose hydrogel, and displayed a novel polarized emission. This work provided a simple, low-cost and environment-friendly pathway to fabricate fluorescent cellulose films, showing potential applications in packaging, decoration materials and other functional materials such as anti-counterfeiting paper.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 98
·95656-95662
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IF 3.289
Peipei Sun,Kaitao Zhang,Shibin Shang,Jie Song,Dan Wang
Hydrothermal carbonization (HTC) is an effective and sustainable way to covert biomass into functional carbonaceous materials. Effects of condition parameters on the morphology and particle size distributions were evaluated. However, the absence of porosity of HTC materials limits their wide applications. Activation of HTC materials could solve this problem. Traditional activation methods, which use strong base or acid as activating agent, could lead to pollutions. Here, we prepared microporous activated carbon spheres from ethyl cellulose under static air atmosphere. The resultant activated carbon spheres were characterized by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), FT-IR spectrometer, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption. Results reveal that the obtained carbon spheres show smooth surface, good dispersion and abundant surface functional groups. In addition, the spherical carbon exhibits high adsorption abilities for different kinds of dyes, which is important for environment protection.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Zifan Song,Ran Chen,Shan Luo,Wangyang Yu,Jinqiu Yuan,Fengcai Lin,Meijie Wang,Xingzhong Cao,Yiqiang Liao,Biao Huang,Xinda You
Organic solvent nanofiltration (OSN) is a low-carbon technology for organic mixture separation that usually relies on non-renewable fossil-derived membranes. Cellulose, a biomass material with extensive sources and superior resistance to organic solvents, holds great promise in engineering OSN membranes. Here we studied the mass transport and separation properties of regenerated cellulose membranes (RCMs), which were made from wood pulp using ionic liquid as solvent by phase inversion method. By regulating membrane thickness from 150 μm to 350 μm, the solvent permeance and solute rejection can be finely tuned. The 350-μm-thick RCM membrane (RCM-350) displays better compaction resistance than the thinner ones and harvests high solute rejection with ethanol permeance reaching ∼ 30 L m −2 h −1 bar −1 , outperforming the state-of-the-art polymeric membranes and showing long-term stability during cross-flow OSN. When used for solute separation, the RCM-350 membrane provides molecular selectivity of up to 294 and 68 for Alcian blue/Rifampicin and Alcian blue/Tetracycline mixtures, respectively, which depends on the mixture composition. Our findings reveal the potential of regenerated natural cellulose as a high-performance and sustainable alternative membrane material for separating organic mixtures.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 4
·2229-2240
·
IF 5.044
Shao Yatao,Fan Zhihong,Zhong Mingfeng,Xu Wei,He Chang,Zhang Zhijie
Polypyrrole/bacterial cellulose (PPy/BC) composites with nanofiber structure were prepared by a facile in situ oxidative polymerization for the efficient removal of hexavalent chromium (Cr(VI)) from aqueous solution. The characteristics of the adsorbent were analysed by SEM, TEM, BET, EDX, FT-IR, and XPS and PPy found to be evenly wrapped on cellulose surfaces to form a core–shell structure and the specific surface area calculated at 95.9 m 2 g −1 . Benefiting from high surface area, PPy/BC efficiently removed Cr(VI) and possessed a maximum adsorption capacity of 555.6 mg g −1 at 298 K and pH 2. Adsorption data was determined to conform to the Langmuir isotherm model and pseudo-second-order model. Cr(VI) adsorption on PPy/BC was involved in ion exchange and electrostatic attractions. Meanwhile, a portion of Cr(VI) was reduced to trivalent chromium (Cr(III)) by pyrrolic nitrogen and then retained on PPy/BC surfaces by chelation. In addition, PPy/BC maintained 70.5% of its initial adsorption capacity after five adsorption and desorption cycles. This study demonstrated that PPy/BC can be a cost-effective, reusable, and highly efficient adsorbent for Cr(VI) removal.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ANALYTICAL LETTERS
·
2025
·
IF 1.8
Li Zhang,Shuya Wang,Xuelian Liu,Zhiyong Guo,Chen Zhang,Xi Chen
Fluorescence sensing for Pb2+ was developed using the in-situ growth of CsPbBr3 nanocrystals on a flexible cellulose film for the determination of Pb2+. Sulfhydryl groups were introduced onto the cellulose film to improve the extraction efficiency of Pb2+. The fluorescence signal exhibited a linear response to the Pb2+ concentration from 0.1 to 1.0 µg mL−1 with a detection limit of 3.2 × 10−2 µg mL−1. The film could be used to direct Pb2+ on a solid surface. The approach eliminates complex sample pretreatment, offering simplicity, cost-effectiveness, and rapid response. Its semi-quantitative capability shows promise for on-site screening of Pb2+ on surfaces (e.g., toy, pencils).
研究领域:
分析化学
·
环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）