INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
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IF 5.162
Shumin Zhang,Lin Li,Xuehong Ren,Tung-Shi Huang
Bacterial cellulose (BC) is a natural polymer with remarkable superiority for fabricating biomaterials. In this study, a multiporous bacterial cellulose (MBC) film was modified with N-isopropylacrylamide (NIPAM), and the modified MBC film was imbued with antibacterial properties after chlorination. The dried chlorinated samples showed superb antibacterial efficacy and could inactivate 6.19 log of inoculated S. aureus and 6.29 log of E. coli within 1 min of contact. After releasing active chlorine for 12 h, 3.67 log of S. aureus and 3.97 log of E. coli were inactivated within 30 min of contact. The prepared films displayed high porous and layered structures with a resultant excellent water retention which can be applied as material for wound dressings. In addition, the chlorinated films showed hemostatic ability on wound bleeding and good biocompatibility. The prepared N-halamine functionalized MBC films might have great potential applications as wound dressings.
研究领域:
生物材料学
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医学工程
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微生物学
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产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2019
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IF 6.019
Lisheng Tang,Xing Zhao,Changping Feng,Lu Bai,Jie Yang,Ruiying Bao,Zhengying Liu,Mingbo Yang,Wei Yang
The development of solar thermal energy storage technologies associated with phase change materials (PCMs) can greatly improve the utilization efficiency of solar energy, which is of significance to alleviate the global energy shortage. A large number of photodriven shape-stabilized composite PCMs has been exploited in recent decades, while the majorities of studies have demonstrated that the properties of composite PCMs are improved at the expense of energy storage density owing to that the introduced functional materials are substituted for a considerable portion of phase change matrix. Here, three-dimensional (3D) porous skeletons composed of bacterial cellulose (BC) as the supporting material and MXene as the photothermal material are introduced into polyethylene glycol (PEG) to fabricate composite PCMs with excellent comprehensive properties. The obtained composite PCMs show excellent shape stability, efficient photothermal conversion ability and extremely high energy storage capacity , which sheds substantial light on the efficient utilization of solar energy.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
CELLULOSE
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2019
·Vol. 26
·期 13
·7863-7875
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IF 3.917
Chen Shiliang,Xie Wenjie,Guo Bifan,Pan Ting,Chen Wenxing
The catalytic activity of metal phthalocyanine (MPc) heterogeneous catalyst is determined by both the microstructure of the support and the electron transfer efficiency of MPc during the reaction process. Inspired by this, we developed a novel, highly-efficient heterogeneous MPc catalyst based on the construction of a “reaction-involved” support. Graphene incorporated bacterial cellulose (G/BC) nanohybrid was conveniently prepared by an in situ biosynthetic method for the subsequent immobilization of tetraamino cobalt(II) phthalocyanine (CoPc) catalyst. The resulting graphene incorporated, CoPc decorated bacterial cellulose nanocomposite (CoPc@G/BC) was applied for decoloration of dye solutions, the G/BC support was deeply involved in the reaction process. The unique three-dimensional web-like framework structure of G/BC and the high affinity of graphene markedly promote the accessibility of reactants to the active sites of CoPc@G/BC, and the equilibrium adsorption data were best fitted by Freundlich model. With H 2 O 2 as an oxidant, dye molecules were catalytically oxidized by CoPc@G/BC, a ca. 70% enhancement of decoloration capacity was achieved with the incorporation of graphene. The catalytic oxidation was analyzed by electron paramagnetic resonance, highly reactive hydroxyl radical (·OH) was identified during the reaction, and the incorporated graphene can obviously promote the formation of ·OH. A potential mechanism of enhancement of catalytic activity of CoPc with G/BC support was originally proposed.
研究领域:
材料科学
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环境科学
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催化化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Jie Yang,Chen Wang,Liyuan Liu,Hongli Zhang,Jianhua Ma
Flexible and wearable pressure sensors have gained great popularity in consumer electronics due to their potential applications in human healthcare, E-skin, and artificial intelligence interactions. MXene is regarded as one of the most ideal candidate sensing materials due to its high electrical conductivity and controllable interlayer space. However, the easy-to-oxidize characteristic of MXene materials greatly restricts the sensitivity and reliability of sensor devices, especially in wet climates. Herein, a highly sensitive and waterproof flexible pressure sensor using a free-standing hydrophobic bacterial cellulose/Ti3C2Tx MXene (HBT) hybrid film as a sensing layer is fabricated by facile and effective nanocellulose intercalation and fluorine modification strategies. The obtained pressure sensor delivers high sensitivity (65.5 kPa–1), fast response (50 ms), wide linear sensing range (0.002–30 kPa) with a low detection limit of 0.57 Pa, and excellent repeatability over 50,000 cycles. Meanwhile, owing to the highly hydrophobic surface of the HTB film, the outstanding sensing features could be well retained, although immersed in water several times. Benefiting from the excellent sensing properties and water resistance, the HBT sensor serves as a wearable force sensor to monitor the full-range human physiological motions regardless of whether the conditions are normal or wet. This work provides a new pathway to design the MXene pressure sensor with high reliability and demonstrates the promising usage of HBT sensors in portable biomedical electronics.
研究领域:
生物医学工程
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材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
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2022
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IF 11.504
Chan Lei,Yunxiao Xie,Yilan Wu,Yan Li,Bin Li,Ying Pei,Shilin Liu
The stabilization of food-grade water in water (W/W) emulsions, as a potential candidate for encapsulating water-soluble functional components, remain a significant challenge in food science research. The main purpose of the work was to find a suitable particle for the preparation of the novel W/W emulsion. This system was composed of two immiscible water-soluble biopolymers (dextran and maltodextrin), and stabilized by using bacterial cellulose (BC) nanofibrils. The BC-stabilized W/W emulsions were successfully fabricated with the 20 wt% dextran (DEX) and the 10 wt% maltodextrin (MAL). There was no significant change in the droplet size of the emulsion with increasing BC surface charge from 0.41 mmol/g to 1.41 mmol/g dry cellulose. Meanwhile, the apparent viscosity, storage modulus ( G′ ) and loss modulus ( G″ ) of the emulsions were decreased with increasing BC surface charge. The stabilization mechanism of the W/W emulsion was due to the formation of viscoelastic network structure by BC nanofibrils. When the BC content increased from 0.04 wt% to 0.16 wt%, the emulsion droplet size was decreased from 3.78 ± 0.79 μm to 2.01 ± 0.40 μm. Furthermore, the obtained W/W emulsion did not demulsify within 7 d, it had better stability than that of the reported W/W emulsion. Moreover, the BC-stabilized emulsion was insensitive to the change of ionic strength concentration (0–200 mM) and pH (3–11). In brief, it was the first report to use BC nanofibrils to stabilize the W/W emulsion, which enriched the type of W/W emulsion.
研究领域:
食品科学
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材料科学
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生物技术
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产品关联
DOI
高影响因子
Journal of Industrial Textiles
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2021
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IF 3.732
Yue Sun,Xin Li,Dawei Li,Huizhen Ke,Qufu Wei
Environmental hormones such as bisphenol A have attracted enormous attention due to their potential threat to humans and environment. Herein, we synthesized a BC/MIL-53 (Al)-F127 composite membrane by the vacuum filtration method with a mesostructure metal–organic framework MIL-53 (Al)-F127 and bacterial cellulose as the substrate. The BC/MIL-53 (Al)-F127 composite membrane exhibited efficient adsorption of bisphenol A in aqueous solution. The results exhibited that 94% of bisphenol A could be adsorbed in approximately 120 min, and the equilibrium sorption amounts of bisphenol A reached approximately 8.3 mg/g. Meanwhile, the mechanism of adsorption was explored. The optimum pH and temperature for the adsorption of bisphenol A were 6 and 40°C, respectively. The removal efficiency of bisphenol A was maintained at 90% after five repeated cycles, indicating the advantage to separate freely without a complex filtration system. The results of adsorption indicated that the BC/MIL-53 (Al)-F127 membrane has great potential in the aspect of the sewage treatment as a prospective sorbent.
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
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Hao Liu,Zhou Cui,Lijin Luo,Qiugang Liao,Rui Xiong,Chao Xu,Cuilian Wen,Baisheng Sa
With the rapid development of modern electronics, the next generation of electromagnetic interference (EMI) shielding materials requires ultrathin, lightweight, flexibility and robustness to protect electronic devices from radiation pollution. In this study, the multifunctional Ti 3 C 2 T x /Bacterial Cellulose (Ti 3 C 2 T x /BC) composite films with uniformly lamellar structures have been developed by combining experimental and theoretical works. The microstructures, mechanical properties, EMI shielding and photothermal conversion performances of Ti 3 C 2 T x /BC composite films have been systematically investigated. It is highlighted that the resultant ultrathin and flexible Ti 3 C 2 T x /BC composite film with a Ti 3 C 2 T x content of 50 wt% exhibits satisfactory tensile strength of 109.6 ± 4.5 MPa, excellent electrical conductivity of 5020 S m −1 and EMI SE value of 43.7 dB. More interestingly, the composite film displays stable and fast-response photothermal characteristics, with the photothermal conversion temperature up to 74.5 ℃. This study proposes a versatile strategy to synthesize multifunctional MXene/BC composite films with satisfactory mechanical properties, high performance EMI shielding and photothermal conversion effects, which shows great potential for the protection of electronic devices.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Feiya Fu,Qinqin Chen,Lihuan Chen,Shaojie Cai,Yuxin Lan,Zijun Pan,Haidong Li,Juming Yao,Xiangdong Liu
Mechanically twisting a yarn is a useful and important method for creating internal stress, changing macromolecular orientation, and affording interesting fiber properties, including mechanical, structural, physical and chemical properties. Bacterial cellulose (BC) nanofibers are a new type of highly crystalline bionanofibers exhibiting excellent intrinsic mechanical properties . Herein, BC macrofibers with a diameter of 0.35–0.53 mm were prepared from BC hydrogel films using a two-step technique involving drying and twisting processes. Moreover, the effects of the drying method (oven- and freeze-drying) and those of the processing steps on the morphologies, structures, and physicochemical properties of the macrofibers were investigated. Results indicated that only the wet twisting–first process affords continuous macrofibers with a compact and uniform structure. The tensile strength and elongation at break of the macrofibers were 199 MPa and 24%, respectively. Furthermore, by introducing graphene oxide (GO) to the macrofibers, a photothermal and moisture actuator was facilely constructed, which could produce a twisting motion of 0.39 rpm and an untwisting motion of 0.6 rpm. This study provides insights into methods to easily alter the properties of BC macrofibers, which is pivotal for the macrofiber’s potential application in intelligent devices.
研究领域:
材料科学
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生物工程
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产品关联
DOI
高影响因子
Journal of Industrial Textiles
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2023
·
IF 3.2
Xu Yang,Sarkodie Bismark,Dengbing Wang,Zuyi Liu,Yun Tao,Ziwei Sun,Xu Han,Quan Feng
Antibiotics released in the water pose a serious threat to human and ecological health. Therefore, it is of great importance to effectively remove antibiotics from wastewater. In this study, recyclable bacterial cellulose/sodium alginate/zeolitic imidazolate framework-8 (BC/SA/ZIF-8) aerogel composites were prepared by chemical cross-linking and in situ growth in freeze-drying. The successful preparation of the composite aerogel was confirmed by scanning electron microscope (SEM), Fourier Transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analysis. The results reveal that BC/SA/ZIF-8 aerogel composite has significantly high BET specific surface area of 165.24 m2/g than that of BC/SA at 7.39 m2/g. The BC/SA/ZIF-8 composite aerogel exhibited excellent adsorption performance for tetracycline hydrochloride, with a maximum adsorption capacity of 746.27 mg/g. The adsorption process followed the pseudo-second-order kinetic model and Langmuir adsorption isotherm model. Moreover, the reusability test on BC/SA/ZIF-8 composite aerogel revealed an insignificant decline in adsorption after six cycles. Therefore, BC/SA/ZIF-8 composite aerogel has a high potential as a novel and recyclable adsorbent for efficient removal of tetracycline hydrochloride from water.
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
KEY ENGINEERING MATERIALS
·
2016
·
IF 0
Rui Fu,Hua Zheng Sai,Li Xing,Jun Hui Xiang,Zhen You Li,Ting Zhang,Fu Shi Zhang
Soft skeleton of bacterial cellulose aerogels (BCAs) was strengthened effectively by conformal coverage of regenerated cellulose to make sure the BCAs sustain more compression. After freeze drying, compression modulus of the strengthened sample is significantly higher than that of the BCAs, which endows the former more extensive applications. The regenerated cellulose solution was prepared by gelation of cellulose from aqueous alkali hydroxide/urea solution. Then the bacterial cellulose wet gels bulks were immersed in the regenerated cellulose solution with different contents to discuss the enhanced effect of the BCAs skeleton. The morphology of the enhanced BCAs was observed by scanning electron micrograph (SEM).The porous structure of the enhanced BCAs was investigated by Brunauer-Emmett-Teller (BET) instrument. The stress−strain curves of the enhanced BCAs were measured. The XRD pattern of the strengthened sample was also carried out. The results indicated that regenerated cellulose forms thin layers which conformally covered bacterial cellulose skeleton fibers and that had little effect on microstructure and crystal form of the bulk cellulose aerogels.
研究领域:
材料科学
·
生物技术
✓ 已验证
DOI
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Dongmei Li,Zhigang Chen,Shiqi Zhang,Yan Xi,Xiaozhi Liu,Yilin Zhang,Yue Ding,Shiru Jia,Yanyan Xie,Cheng Zhong
Microbial infections in deep wounds pose a major threat to human health. The development of hydrogel with both antimicrobial and injectable properties can effectively fill wounds while inhibiting microbial infections. In this study, we reported a copper ion cross-linked TEMPO-oxidized bacterial cellulose (OBC) nanofiber hydrogel. The dynamic nature of -COOH-Cu 2+ coordination imparted physicochemical versatility to Cu/OBC hydrogels, including injectability and optimal shear-thinning rheology. Duo to the Cu 2+ - mediated Fenton-like effect and its synergistic effect with glutathione (GSH), the obtained hydrogels could generate hydroxyl radical (·OH) and exhibited broad-spectrum antimicrobial activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Candida albicans . Notably, the Cu/OBC/GHS hydrogel with low content of Cu 2+ had good both hemolytic activity and cytocompatibility. Furthermore, the 2Cu/OBC/GSH 10 hydrogel supported widespread cell attachment, improved cellular morphology, and enhanced viability, highlighting their potential as a biomaterial for sustained cell culture applications. This study provides a simple strategy to develop the injectable, antimicrobial, and biocompatible hydrogel.
研究领域:
生物材料学
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医学工程
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微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Liyan Yi,Tongrui Zhang,Chuanhu Lu,Longxiang Tang,Guodong Ding,Chunyan Zhong,Yuguang Zhong,Guoshen Bian,Jian Wei,Huiqing Wang,Min Nie
Bio-based polylactic acid (PLA) with degradable, environmentally friendly and bio-friendly properties has become important sustainable material. However, the inherent disadvantages of PLA, such as weak crystallization ability, poor thermal stability, and poor barrier properties, limit its application in areas such as Plastic packaging-Containers. In this paper, a simple but efficient method was established to decrease effect of inherent disadvantages of PLA and expand its application, is by pickering emulsion. Food sources bacterial cellulose blocks were oxidized and followed high-pressure homogenization to prepare nano-bacterial cellulose (TOBC) as amphiphilic emulsifier, then TOBC nanofibers coated/stabilized PLA microspheres were prepared via pickering emulsion method, that avoiding the problem of interface separation between nanocellulose and PLA. As a result, TOBC served as a heterogeneous nucleating agent to greatly improve the crystallization behavior of PLA, boosting the crystallinity of the composite from 21.8 % to 49.6 %. After hot-pressing or injection processing to a shaped material, the prepared PLA/TOBC composites exhibited the excellent combined properties with tensile strength of 66.2 MPa, flexural strength of 81.22 MPa, impact strength of 2.72 kJ/m 2 and Vicat softening temperature of 167.3 °C. Meanwhile, TOBC addition also greatly improved the oxygen barrier ability of the composite, and the oxygen transmission rate was reduced from 143.77 cm 3 /(cm 2 -24h-0.1 MPa) for PLA to 16.01 cm 3 /(cm 2 -24h-0.1 MPa) for PLA/TOBC-3. This means that PLA/TOBC composites are expected to be used as environmentally friendly Plastic packaging-containers with high barrier capacity, providing new ideas for the development of Plastic packaging products.
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
危险品化学品经营许可证（带存储）