ChemistrySelect
·
2024
·Vol. 9
·期 28
·e202304818
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IF 1.9
Lihong Gao,Xinpeng Zhao,Qingbo Zhou,Huaying Li,Haibin Yu
Graphical This paper prepares expanded rice straw through a single-screw steam explosion method, and then uses the expanded rice straw to prepare corrugated base paper, and explores the effects of carboxymethyl cellulose, hydroxypropyl methylcellulose, and cellulose nanofibers on the mechanical properties of corrugated base paper. Corrugated base paper under optimal conditions is selected for SEM, DSC, TG, FTIR, and other characterizations. This study aims to comprehensively examine the influence of three distinct additives, namely carboxymethyl cellulose (CMC), hydroxypropyl methylcellulose (HPMC), and cellulose nanofibers (CNF), on the performance enhancement of corrugated base paper. For this purpose, steam-exploded rice straw was treated with varying concentrations (2, 4, 6, 8, and 10 wt%) of CMC, HPMC and CNF. Analysis of the rice straw pre and post expansion, as well as the modified corrugated base paper, was conducted using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TG), tensile performance testing, and scanning electron microscopy (SEM). Results indicated that adding CMC, CNF, and HPMC to corrugated base paper significantly improved bonding between paper layers, particularly at 2 %, 6 %, and 8 % concentrations, respectively. This enhancement notably increased tensile strength and elastic modulus of the corrugated base paper. Tensile performance saw increases of 57.76 %, 59.01 %, and 60.25 %, while elastic modulus showed increments of 52.7 %, 9.4 %, and 136.69 %, respectively. These findings provide valuable insights for the preparation of corrugated base paper and highlight the potential of CMC, HPMC, and CNF in enhancing paper mechanical properties.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xue Fu,Shuyan Xu,Mingyu Ma
In recent years, with the increasing attention to food safety and environmental protection, the development of biodegradable food packaging materials with comprehensive performance has become a hotspot. This article presents the preparation of a polyvinyl alcohol carboxymethyl cellulose composite film with barrier property. This study utilized formaldehyde nanocellulose as a crosslinking agent to chemically modify composite membranes. Further promote its application in food preservation. The mechanical properties and barrier properties of formaldehyde cellulose (DCNC) polyvinyl alcohol (PVA) carboxymethyl cellulose (CMC) composite films were studied. Apply the prepared DCNC/PVA/CMC composite film to strawberry preservation experiments. The results showed that cross linked modified composite film can more effectively reduce indicators such as weight loss rate, titratable acid content and ascorbic acid content of strawberries, thus effectively prolonging strawberry shelf life by 4 days. This indicates that modified composite films have certain potential application value in the field of food packaging.
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
OPTICS EXPRESS
·
2025
·Vol. 33
·期 6
·13895-13906
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IF 3.3
Xiaoxiao Chen,Xueguang Lu,Lu Tang,Kefan Chen,Wanxia Huang
Despite striking advances in terahertz (THz) sources and detectors, the exploitation of active materials that can alter their properties in response to external excitations for the manipulation of THz waves is another major issue. Here, freestanding and easily scalable composite film based on vanadium dioxide/carboxymethyl cellulose (VO2/CMC) is proposed to realize thermally and optically tunable THz waves. This VO2/CMC composite film exhibits broadband modulation with a modulation depth of up to 76%, a response time of about 1.2 s and high stability both in mechanical deformation and in air. Based on the above VO2/CMC composite film, a THz metamaterial with absorption-reflection switchability is demonstrated. By controlling the temperature-dependent phase transition of VO2 particles, the reflection dip of the metamaterial at 0.423 THz with an amplitude of -25 dB first shifts to lower frequencies accompanied by an increase in amplitude, and finally disappears with the THz metamaterial reflecting THz waves almost completely. The experimental results agree well with numerical simulations and the modulation mechanism of the metamaterial is also investigated. This work provides a simple and low-cost method for developing VO2-based THz multifunctional smart devices with promising applications in areas such as but not limited to THz modulators and sensors.
研究领域:
材料科学
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光学工程
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太赫兹技术
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 5
·e53412
·
IF 3.057
Xin Yang,Xiao Ma,Jingjing Yuan,Xia Feng,Yiping Zhao,Li Chen
Inorganic nanoparticles (NPs) have been employed in modification for polyvinyl chloride (PVC) membrane intrinsic hydrophobicity. Carboxymethyl chitosan (CMC), a natural organic matter, was used to relieve the agglomeration of zinc oxide (ZnO) NPs in the membrane matrix. In this paper, ZnO-CMC NPs were successfully prepared via co-precipitation approach, blended with PVC membranes, and the effect of ZnO-CMC NPs for the membrane properties was studied. The SEM and EDX confirmed excellent dispersion of ZnO-CMC NPs on the membrane surface. The enhanced hydrophilicity, porosity and inter-connected finger-like strcture of modified membranes confirmed by water contact angle and SEM. In addition, pure water flux of PVC/ZnO-CMC composite membrane was 107.36 L m −2 h −1 (PVC/ZnO-CMC (0.25 wt%)), which was higher than that of neat PVC membrane (83.11 L m −2 h −1 ). Importantly, the modified membranes exhibits lower static BSA adsorbtion because of the improved hydrophilicity, and a higher flux recovery rate (>90%) after three sequential filtration cycles. The antibacterial behavior of PVC/ZnO-CMC membrane was tested simply using Escherichia coli , and the results indicated that all composite membranes possess excellent antibacterial properties. Our work presents PVC/ZnO-CMC NPs composite membrane a promising future in wastewater treatment and antibacterial application.
研究领域:
材料科学
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环境工程
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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2017
·
IF 1.873
Shuanglei Peng,Guancheng Jiang,Xinliang Li,Lili Yang,Fan Liu,Yinbo He
During the process of recirculating drilling fluids, the removal of useless solids, especially submicron particles, in drilling fluids is the most problematic issue in drilling operations. The cost and efficiency of currently used technologies are the two issues that have to be addressed urgently. In this study, the novel flocculant CMC- g -DMDAAC was synthesized by grafting diallyl dimethyl ammonium chloride (DMDAAC) onto carboxymethyl chitosan (CMC). The physicochemical structure of the CMC- g -DMDAAC product was characterized by Fourier-transform infrared (FT-IR) spectroscopy, proton nuclear magnetic resonance ( 1 H NMR) spectroscopy, and determination of the ζ-potential. A kaolinite suspension, a bentonite suspension, and drilling fluids from an oilfield were selected to evaluate the flocculation performance of CMC- g -DMDAAC by testing the products’ turbidities and particle size distributions. In comparison, the flocculation performances of chitosan, CMC, and commercial hydrolyzed polyacrylamide (HPAM) were also tested under the same conditions. The results showed that CMC- g -DMDAAC exhibited steady flocculation performances for all clay suspensions and drilling fluids at all pH ranges at low dosage. The scavenging capacity of submicron particles in drilling fluids was also excellent for the tested product.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Wenpei Wu,Lu Han,Xiang Nie,Mingyue Gu,Jing Li,Mengfang Chen
The multiple injections of nanoscale zero valent iron (nZVI) slurry, an efficient method to remediate contaminated groundwater, requires an accurate assessment of the transport and risks of these particles in saturated porous medium . However, the influencing mechanism of nZVI transport under multiple injection conditions is not fully understood. In this experimental study, one-dimensional sand columns were used to evaluate the effects of injection concentrations, particle sizes and surface chemical corrosion on the transport of carboxymethyl cellulose modified nZVI (CMC-nZVI) under triple injection conditions, where the different volumes of NaCl solution were flushed through the columns between the injections. Based on the breakthrough curves and retention profiles under flushing 4 pore volumes of NaCl solution between the injections, the transport of CMC-nZVI particles was gradually enhanced attributable to the exclusion among these particles at injection concentration of 200 mg/L, but the opposite was observed due to large aggregation caused by strong magnetic force among particles at 500 mg/L. However, the magnitudes of enhancement or reduction on maximum C/C 0 under the above injection concentrations were related to the smallest particle size of D h = 3.926 μm because of high particle number concentrations leading to intense competition on depositional sites at 200 mg/L and significant aggregation at 500 mg/L. Conversely, the transport of CMC-nZVI was reduced under flushing 76 pore volumes of NaCl solution between the injections because of pronounced corrosion of CMC-nZVI in water as evidenced by the XPS and XRD analyses of particles. This corrosion could cause the decrease in repulsion among particles due to the increase in surface negative zeta potential and the CMC desorption from nZVI. Accordingly, this study revealed that relative high injection concentrations and chemical corrosion in groundwater could restrain the mobility of nZVI under multiple injection conditions and the potential risks posed by CMC-nZVI are controllable.
研究领域:
环境科学
·
地下水修复
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产品关联
DOI
PubMed
高影响因子
Journal of Chemistry
·
2022
·
IF 3.241
Yingchun Xie,Yilin Zhang,Jiayu Qin,Murodjon Samadiy,Tianlong Deng
In this study, ethylene glycol diglycidyl ether (EGDE) and melamine (ME) were used to prepare a spherical composite material CMC-LTO-EGDE-ME through the strategy of cross-linking reaction of biodegradable sodium carboxymethyl cellulose (CMC) with Li2TiO3 (LTO) to improve the cycle stability of the adsorption-desorption for lithium recovery. In the geothermal water at 333.15°K, the adsorption capacity of the spherical composite adsorbent for lithium-ion is 12.02 mg/g, and the adsorption equilibrium time is 8 h. There is a good selectivity of Li+ (Kd = 3.7 × 103) and high separation factors between Li+ and Na+, K+, Cs+ and Ca2+ (between 39.17 and 181.97). Studies on adsorption kinetics and adsorption isotherm showed that composite material’s adsorption process was obtained from the pseudosecond-order kinetics and the molecular diffusion model. It was found that the composite material has broad applications in lithium recovery from geothermal water.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Naijian Hu,Min Chen,Jia Yang,Jianwen Chen,Xinmei Yu,Wenbo Zhu,Ting Wang,Xiucai Wang
Triboelectric nanogenerators (TENGs) have received much attention as cost-effective and friendly energy-harvesting devices that effectively convert mechanical energy from the environment into electrical energy. In this study, a naturally degradable TENG was papered based on TiO2/CMC, which is a cellulose derivative with ease of degradation, good biocompatibility, and low cost. By doping TiO2 nanoparticles, the open circuit voltage, short circuit current, and transfer charge were significantly improved compared to the TENG-based pure CMC film because of the increased dielectric constant, and the corresponding values of 121 V, 6.7 μA, and 20.5 nC were obtained at a doping concentration of 8 wt %. Then, the manufactured triboelectric nanogenerator (MT-TENG) was successful in lighting up LED lights and powering commercial calculators. Moreover, the MT-TENG was used to collect human mechanical energy, which confirms its potential applications. This study provides a feasible path for the research of TENGs based on biomass materials.
研究领域:
材料科学
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能源技术
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生物医学工程
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DOI
高影响因子
INTEGRATED FERROELECTRICS
·
2015
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IF 0.357
Yu Guo Zhuo,Jun Liu,Qing Shan Li,Guang Zhong Xing,Wen Feng Lv
Na-CMC polyurethane microspheres were prepared with isophorone diisocyanate and polyethylene glycol and sodium carboxymethyl cellulose as main materials. Ibuprofen used as a model drug and core material was coated into microspheres. The microspheres morphologies and the composite physical states were investigated using optical microscopy, scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy. Optical microscopy and scanning electron microscopy observations revealed that had a good spherical structure. Results from FTIR and DSC suggested that the Na-CMC had been successfully introduced to the polyurethane molecular chain, Na-CMC polyurethane microspheres had good thermal stability, and heating weightlessness was less than 2% in the 300°C. Na-CMC polyurethane microspheres carried drug were pH sensive and the drug release rate under different pH value were different.
研究领域:
药学
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材料科学
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药物递送系统
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产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7124-7131
·
IF 2.1
Wang Minmin,Zhao Wenwu,Shi Xu,Sun Tongming,Ju Jianfeng,Tang Yanfeng
In recent years, self-power sensing systems based on triboelectric nanogenerators (TENGs) have been extensively studied. However, pure polymer friction materials are not satisfactory in terms of their triboelectric properties and cannot meet the needs of high-performance TENGs. We have improved the performance of a polymer electrode-based TENG by increasing the specific surface area of the material as well as the dielectric constant of the triboelectric layer. Benefitting from the enhanced dielectric constant engineering and high surface area engineering, the BaTiO 3 @CMC-based TENG exhibits excellent output performance which is 3 times higher than that of a pure CMC-based TENG. As expected, the obtained self-powered TENG can be used to monitor the wind speed with a high sensitivity of 1.97 V/(m s −1 ). In addition, the obtained sensor system can accurately map the contact position and touch trajectory of the object when assembling the TENG with a 4 × 4 array on an acrylic substrate. This work will provide basic insights into improving the performance of TENGs and widen their applications in the field of sensing.
研究领域:
材料科学
·
传感器技术
·
能源转换技术
✓ 已验证
产品关联
DOI
高影响因子
Natural Product Communications
·
2023
·
IF 1.8
Qing Xu,Dekun Li,Meixu Wan,Yanxin Zhang,Zhi Li,Aichun Ju
ObjectiveIn this study, an online CMC–LC/MS method was established in order to screen the active components of Yiqi Fumai lyophilization injection (YQFM) related to angiogenesis. The pro-angiogenic active components of YQFM were screened using this system and were then further verified.MethodsThe ECV304/CMC model coupled online with an HPLC–MS system was initially developed to screen, analyze, and identify the allergenic components of YQFM. A fraction was retained on the ECV304/CMC column, which was identified as ginsenoside Rb2. A cell proliferation assay and zebrafish intestinal microvascular model labeled with green fluorescence were used to detect the proliferation effect of ginsenoside Rb2.Results(1) The active component in YQFM, which was retained on the column, was ginsenoside Rb2. (2) Within a concentration range of 2.5–20 μg/mL, ginsenoside Rb2 was shown to promote the proliferation of ECV304 and EPCs cells and increase the area of sub-intestinal vessels in zebrafish.ConclusionGinsenoside Rb2, the active component in YQFM, can promote angiogenesis. The ECV304/CMC-online-HPLC system may serve as an effective screening tool for the vasoactive components from the traditional Chinese medicine injection.
研究领域:
药理学
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中药学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2024
·
IF 3.8
Li Chenjia,Liao Qi,Wang Rui,Zhang Xinping,Ma Mengyang,Liu Yonghong,Xiao Lei,Jiao Ying,Wang Nan
The scourge of drug addiction and abuse poses a significant challenge to society. Opioid drugs acting on μ-opioid receptor (OPRM1) make it one of the pivotal targets for drug addiction. In the past decade, sewage analysis has become a prevalent method of drug monitoring. However, traditional methods of detecting drugs in sewage are cumbersome, and rapid detection methods are relatively lacking. To address this, an innovative OPRM1-SNAP-tag/CMC method to directly identify drug components in sewage was established. Cell membrane chromatography (CMC) is an affinity chromatography technique which effectively detects receptor affinity substances. Cells constructed with high expression of specific receptor could be used to screen for compounds acting on the receptor. CMC based on OPRM1 provides a potentially convenient and effective tool for the detection of targeted drug components in sewage. In this study, the selectivity, reproducibility, column lifetime, and carryover of the CMC column had been assessed. Initially, we eluted the collected domestic sewage with methanol and acetonitrile, and the retention peaks were observed on the CMC system. Subsequently, without any preliminary sample preparation, we directly injected filtered samples of suspicious sewage into the OPRM1-SNAP-tag/CMC system, where we observed retention peaks as well. The retained components were further identified as morphine by using UPLC-MS/MS. In conclusion, the OPRM1-SNAP-tag/CMC method stands out as a reliable and robust model for the detection of drug components in sewage. It provides a valuable analytical tool for frontline drug control efforts, enhancing our capacity to monitor and mitigate the impact of drug abuse on society. Graphical Abstract
研究领域:
生物化学
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药物分析
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环境科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）