FOOD HYDROCOLLOIDS
·
2017
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IF 4.747
Huiqiong Yan,Xiuqiong Chen,Huangwang Song,Jiacheng Li,Yuhong Feng,Zaifeng Shi,Xianghui Wang,Qiang Lin
Although bacterial cellulose (BC) and bacterial cellulose nanocrystals (BCNs) have considered to be edible, non-toxic, biocompatible and biodegradable, there is still the dearth of reports of BC and BCNs as the emulsifiers of Pickering emulsions with respect to the applications in foods , cosmetics and medicines. In this work, BC with ultrafine network architecture and 8–40 nm crystalline microfibrils in diameter was produced by Acetobacter xylinum , and then it was hydrolyzed by sulfuric acid followed by the oxidation of hydrogen peroxide to prepare BCNs. The physicochemical properties of BC and BCNs were contrastively evaluated by FT-IR, XRD, TGA and dynamic light scattering (DLS). The emulsifying performances of BC and BCNs in the stabilization of olive oil Pickering emulsion were further evaluated by optical microscope (OM) and fluorescent microscope (FM). Experimental results showed that the sulfuric acid hydrolysis of BC induced the removal of the amorphous components and the cleavage of the crystalline microfibrils, making BCNs possess the initiating decomposition temperature of 350 °C, the crystallinity index (CrI) of 89.6%, average size of 259.6 nm with PDI of 0.26 and zeta potential at about −34.8 mV, which exhibited high thermal stability and good emulsifying performance in comparison with BC. Furthermore, the effects of pH and ionic strength on emulsion stability were also investigated. In comparison to BC, BCNs were more sensitive in response to the change of pH and ionic strength.
研究领域:
食品科学
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材料科学
·
化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Shan Ye,Lei Jiang,Jimin Wu,Chen Su,Chaobo Huang,Xiufeng Liu,Wei Shao
In this study, we report the design and fabrication of a novel biocompatible sponge with excellent antibacterial property, making it a promising material for wound dressings. The sponge is formed by grafting amoxicillin onto regenerated bacterial cellulose (RBC). It was observed that the grafted RBC could enhance the antibacterial activity against fungus, Gram-negative, and Gram-positive bacteria. The morphology of strains treated with the grafted RBC and fluorescent stain results further demonstrated the antibacterial ability of the fabricated sponge. Moreover, a cytocompatibility test evaluated in vitro and in vivo illustrates the nontoxicity of the prepared sponge. More importantly, the wound infection model reveals that this sponge can accelerate the wound healing in vivo. This work indicates the novel sponge has the huge potential in wound dressing application for clinical use.
研究领域:
生物材料学
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医学
·
微生物学
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DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2015
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IF 4.074
Hairong Zhang,Haijun Guo,Bo Wang,Silan Shi,Lian Xiong,Xinde Chen
In this work, bacterial cellulose (BC) was activated by ethylenediamine (EDA) and then dissolved in lithium chloride/N,N-dimethylacetamide (LiCl/DMAc) aqueous solutions. The resulting transparent solution was cast on a glass plate to prepare regenerated BC. Then cationic BC was prepared homogeneously by the reaction between regenerated BC and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride (CHPTAC) in a NaOH/urea aqueous solution. Structure and properties of the BC and its products were characterized by different techniques such as X-ray diffraction (XRD), Fourier transform spectroscopy (FT-IR), scanning electron microscopy (SEM) and thermo-gravimetric analysis (TGA). The results showed that there was no significant difference between the structures of BC, activated BC and regenerated BC. The effects of different temperature and molar ratio of CHPTAC to anhydroglucose unit (AGU) on the degree of substitution (DS) value were examined. The DS values of cationic BC ranged between 0.21 and 0.51.
研究领域:
材料科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
Polymers
·
2020
·Vol. 12
·期 3
·714
·
IF 3.426
Lili Ren,Zhihui Yang,Lei Huang,Yingjie He,Haiying Wang,Liyuan Zhang
Here, a nanofiber-exfoliated bacteria cellulose aerogel with improved water affinity and high mass transfer was synthesized. Consequently, poly Schiff base can be uniformly coated within the body of bacteria cellulose aerogel without the traditional dispersion treatment. The composite aerogel has adequate mechanical and thermal stability and high mass transfer efficiency. Such an aerogel can serve as a superior adsorbent for flow through adsorption of pollution. Typically, the adsorption capacity towards Cr(VI), Cu(II), Re(VII), Conga red, and Orange G reaches as high as 321.5, 256.4, 153.8, 333.3, and 370.3 mg g−1, respectively. Moreover, the adsorption by this composite aerogel is very fast, such that, for example, at just 2 s, the adsorption is almost finished with Cr(VI) adsorption. Moreover, the composite aerogel exhibits a good adsorption-desorption capability. This research will hopefully shed light on the preparation of bacteria cellulose-derived macroscopic materials powerful in not only environmental areas, but also other related applications.Keywords:bacteria cellulose;poly Schiff base;chromium;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
PubMed
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 9
·2218
·
IF 5.076
Binbin Wu,Yikai Sun,Qiujin Fan,Jiahui Chen,Weizheng Fang,Shiliang Chen
In this report, phthalocyanine (Pc)/reduced graphene (rG)/bacterial cellulose (BC) ternary nanocomposite, Pc-rGBC, was developed through the immobilization of Pc onto a reduced graphene–bacterial cellulose (rGBC) nanohybrid after the reduction of biosynthesized graphene oxide-bacterial cellulose (GOBC) with N2H4. Field emission scanning electron microscopy (FESEM) and Fourier transform infrared spectroscopy (FT-IR) were employed to monitor all of the functionalization processes. The Pc-rGBC nanocomposite was applied for the treatment of phenol wastewater. Thanks to the synergistic effect of BC and rG, Pc-rGBC had good adsorption capacity to phenol molecules, and the equilibrium adsorption data fitted well with the Freundlich model. When H2O2was presented as an oxidant, phenol could rapidly be catalytically decomposed by the Pc-rGBC nanocomposite; the phenol degradation ratio was more than 90% within 90 min of catalytic oxidation, and the recycling experiment showed that the Pc-rGBC nanocomposite had excellent recycling performance in the consecutive treatment of phenol wastewater. The HPLC result showed that several organic acids, such as oxalic acid, maleic acid, fumaric acid, glutaric acid, and adipic acid, were formed during the reaction. The chemical oxygen demand (COD) result indicated that the formed organic acids could be further mineralized to CO2and H2O, and the mineralization ratio was more than 80% when the catalytic reaction time was prolonged to 4 h. This work is of vital importance, in terms of both academic research and industrial practice, to the design of Pc-based functional materials and their application in environmental purification.Keywords:bacterial cellulose;graphene;phthalocyanine;phenol;degradation
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Fang Jia,Ruili Wu,Chan Liu,Jinle Lan,Yuan-Hua Lin,Xiaoping Yang
Recently, aerogels have been considered as hopeful thermoelectric (TE) materials because of their unique ultralow thermal conductivity compared to conventional bulk/film materials. However, their electrical conductivity cannot meet the requirement of good TE materials due to their highly porous feature. Herein, we composited poly(3,4-theylenedioxythiophene) (PEDOT) with SWCNT and bacterial cellulose (BC) to synthesize nanoporous PEDOT/SWCNT/BC films that can achieve high electrical and low thermal conductivity simultaneously by post-processing of their hybrid aerogels. A relatively high electrical conductivity of 290.6 S/cm and a low thermal conductivity of 0.13 W m–1 K–1 have been achieved for free-standing PEDOT/SWCNT/BC-32% film at room temperature. Furthermore, the films show an outstanding flexibility and fracture strength of 1.6 MPa and an elongation at break of 2.13%. The unique advantages of excellent flexibility and high electrical conductivity as well as low thermal conductivity make PEDOT/SWCNT/BC films have broad prospects in wearable thermoelectric applications.
研究领域:
材料科学
·
纳米技术
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DOI
高影响因子
CELLULOSE
·
2020
·Vol. 27
·期 15
·8843-8858
·
IF 4.21
Jiang Mengting,Zhang Yakang,Chen Jingwen,Liang Qian,Xu Song,Yao Chao,Zhou Man,Li Zhongyu
A series of morphology-controlled BiOBr nano/macrostructures was successfully synthesized via a novel biomass-route derived from bacterial cellulose (BC). In the BiOBr/BC system compared with pure BiOBr, the three-dimensional BC scaffolds not only effectively prevented the aggregation of BiOBr units by pore confinement, but also strengthened the controllability of BiOBr size with the help of abundant anchoring sites provided by cross-linked BC fibers. By associating the results of characterizations and the photodegradation of RhB dye, the relationship between morphology and photocatalytic activity of BiOBr/BC was investigated. In addition, a possible mechanism for the enhanced photocatalytic activity of the optimized BiOBr/BC has been discussed. This biomass-derived route provides a platform for further design of bismuth-based composite photocatalysts with potential advantages of being anti-aggregation, highly-dispersed, easily recovered and having enhanced catalytic performance.
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
CELLULOSE
·
2022
·Vol. 30
·期 1
·397-411
·
IF 6.123
Yi Xiaotong,Cheng Feng,Wei Xinjing,Li Hongbin,Qian Jingting,He Jinmei
Abstract Hydrogels have attracted widespread attention in controlling bleeding due to their superiority in matching irregular defects. However, inadequate mechanical performance, insufficient adhesion and long gelation times still hinder their application for hemostasis. In this study, a novel hydrogel with self-healing and adhesive properties was designed and synthesized by introducing reversible borate ester bonds of polyvinyl alcohol-borax into tannic acid-modified bacterial cellulose (TA@BC). As demonstrated by tensile stress‒strain tests and rheological measurements, the hydrogels have excellent mechanical performance owing to the synergistic multiple crosslinked bonds among tannic acid-modified bacterial cellulose (TA@BC), polyvinyl alcohol polymer chains and borax in a covalent polymer network. The hydrogels show good self-healing properties and adhesion to different substrates. Moreover, blood loss from a wound treated with the designed hydrogel was approximately 1/5th that from an untreated wound, demonstrating the excellent hemostatic capacity of the hydrogels. Therefore, the designed hydrogels have potential applications in hemostasis and wound dressing. Graphical abstract
研究领域:
生物医学工程
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材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jiyan Li,Min Qiao,Shuo Gao,Tao Zhou,Rui Jiao,Fei Wang,Hanxue Sun,An Li
Solar-driven interfacial evaporation (SDIE) has shown great potential for seawater desalination and wastewater treatment. In this context, we report the development of a composite aerogel material, termed BCAM, which is synthesized from bacterial cellulose, agar powder, and glutaraldehyde, with the addition of MXene as a photothermal material. The two active aldehyde groups (-CHO) of glutaraldehyde undergo a condensation reaction with the hydroxyl groups (-OH) in bacterial cellulose and agar powder, promoting crosslinking between the molecular chains and forming a composite material with directional channel structures. This material exhibits a rich porous structure, excellent mechanical properties, and superhydrophilic characteristics, and is shaped using a gradient cooling method. The incorporation of MXene enhances the light absorption of BCAM (up to 95.6 %), resulting in an evaporation rate of 1.78 kg·m −2 ·h −1 , while the evaporation rate of 3D BCAM reaches 3.43 kg·m −2 ·h −1 . After seawater desalination, BCAM achieved a removal efficiency of over 99 % for major ions in seawater. Furthermore, in practical industrial wastewater, the evaporation rate of the 3D BCAM evaporator reaches 2.8 kg·m −2 ·h −1 , and BCAM maintains its structural integrity after being immersed for 24 h under various acidic conditions (pH:1–5). Overall, these findings demonstrate the substantial practical application potential of BCAM in SDIE technologies.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Irfan Ijaz,Aysha Bukhari,Ammara Nazir,Ezaz Gilani,Hina Zain,Attia Shaheen,Mohammed Rafi Shaik,Mujeeb Khan
Lowering the threat of antibiotics is a hot issue in environmental chemistry. To overcome this problem, a novel MBene-based adsorbent, DTT@BC@MoBT x , was designed by modification of bacterial cellulose (BC) using MoBT x MBene and 1,4-dithiothreitol (DTT). Several characterization methods, including Fourier transforms infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and X-ray Diffraction (XRD), confirmed the successful synthesis of DTT@BC@MoBT x composite. It was discovered that the abundance of functional groups, higher specific surface area, and porosity were facilitative for DTT@BC@MoBT x adsorbents to indomethacin (IDM) and losartan (LP). The adsorption of IDM and LP well fitted to the pseudo-second-order kinetic model and Langmuir isotherm model, suggesting the single-layer chemisorption occurred on the adsorbent. The maximum sorption capabilities of the DTT@BC@MoBT x adsorbent were 1041.26 mg/g for IDM and 887.31 mg/g for LP, indicating excellent adsorption performance. The adsorption capacities of IDM and LP showed a slight decline after four consecutive adsorption-desorption tests, indicating excellent regeneration ability and stability. Interfering monoanionic (Na + and K + ) and monoanionic (Cl − and NO 3 − ) exhibited negligible impacts on IDM and LP elimination rates at all three concentrations. Additionally, it was discovered that metal ions had a greater ability for interference in a higher valency state (Mg 2+ , Ca 2+ , SO 4 2− , and CO 3 2− ) than in a lower valency state (Na + , K + , Cl − , and NO 3 − ). The adsorption processes of IDM and LP by the DTT@BC@MoBT x adsorbent involved hydrogen bonding and electrostatic attraction, as shown by FTIR and XPS analyses. This work offered a novel MBene-based adsorbent for the quick and effective adsorption of IDM and LP from water.
研究领域:
环境化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2018
·Vol. 25
·期 6
·3189-3196
·
IF 3.809
Lv Pengfei,Zhou Huimin,Zhao Min,Li Dawei,Lu Keyu,Wang Di,Huang Jieyu,Cai Yibing,Lucia Lucian Amerigo,Wei Qufu
A simple, rapid method for developing conductive, ultrafine, and high aspect ratio silver nanowires (AgNWs) is reported. Transparent and flexible nanocomposites were fashioned from bacterial cellulose (BC) and AgNWs in a very straightforward and direct manner without the addition of materials or the need for specific facilities. The as-prepared BC/AgNWs composite thin films were able to demonstrate acceptable transparency (near 80% at 550 nm), high flexibility, good mechanical strength (18.95 MPa) and stable conductivity (7.46 Ω sq −1 ) under various bending states.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 11
·1284
·
IF 2.935
Bo Wang,Fu-hua Lin,Xiang-yang Li,Zhong-wei Zhang,Xiao-rong Xue,Si-xiao Liu,Xu-ran Ji,Qian Yu,Zheng-qiu Yuan,Xin-de Chen,Jun Luo
Bacterial cellulose (BC) is a new kind of cellulose with great potential in enhancing preparation of isotactic Polypropylene (iPP) composites, which have been found with excellent performance. However, the interface compatibility between BC and iPP is poor. In this study, iPP/BC composites were prepared by solution mixing. Esterification modified BC (CO) and Maleic anhydride grafted polypropylene (MAPP) added as a compatibilizer was both used to improve the interfacial compatibility of the iPP/BC composites. The rheology and isothermal crystallization behavior of the composites was tested and discussed. The result shows that the complex viscosity and storage modulus of the composite significantly increase in the rule iPP, iPP/BC2, iPP/CO2, and M-iPP/BC3, which indicates that the compatibility of the composite increases as this rule. According to the isothermal crystallization kinetics result, the crystal growth mode of iPP was not affected by the addition of BC and the interfacial compatibility. The spherulite growth rate of the iPP/BC composite increases with increasing crystallization temperature. Especially, the value decreases as the same rule with the complex viscosity and storage modulus of the composite at the same isothermal crystallization temperature. These results suggest that the interface compatibility of iPP/BC composites is greatly improved and the interface compatibility of the M-iPP/BC3 is better than the iPP/CO2.Keywords:Isotactic polypropylene;bacterial cellulose;rheology;isothermal crystallization
研究领域:
材料科学
·
高分子化学
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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）