Food Packaging and Shelf Life
·
2025
·
IF 10.6
Dan Chen,Shiyu Lin,Liming Cao,Wei Huang
Antibacterial food packaging plays a crucial role in preserving food quality and extending shelf life. Polyvinyl alcohol (PVA) is widely used in food packaging, but its lack of inherent antimicrobial properties restricts its wide applications. Zinc oxide (ZnO) is an effective antibacterial agent. However, the uniform dispersion of ZnO nanoparticles (NPs) remains a challenge. To address this, hybrid NPs were constructed using cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF) as bio-templates with ZnO in-situ loading onto their surfaces. These hybrid NPs were then incorporated into PVA/chitosan (4:1, w/w) compound to prepare transparent and antibacterial packaging films. The results indicate that ZnO loaded on the surfaces of CNC or CNF exhibited distinct morphological features. Antibacterial tests revealed that the combination of CS and ZnO exhibited organic-inorganic synergistic antibacterial activity. Furthermore, the hybrid NPs enhanced the mechanical strength and hydrophobicity, with CNF-ZnO showing superior reinforcement. Preservation tests on strawberry demonstrated that the films outperformed PE and PVA/CS films, indicating their effectiveness in maintaining fruit quality and prolonging shelf life.
研究领域:
食品科学与技术
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材料科学
·
纳米技术
·
抗菌包装
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聚合物复合材料
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2023
·
IF 5.1
Hai-Yan Wang,Heng-Da Wang,Yu-Qing Zhang
The high molecular weight sericin recovered by using degumming method of high-temperature and high-pressure water was subjected to a Maillard reaction (MR) with xylose, and the resulting xylosylated sericin (XS) has good water solubility. A mechanically robust, soft, and transparent PVA hydrogel composite membrane (PVA-XS) was obtained by mixing XS (20 w%) into an aqueous PVA solution based on unidirectional nanopore dehydration (UND). The mechanical strength, elongation, and elastic modulus of PVA-XS reached 1.68 MPa, 519.83%, and 0.27 MPa, respectively. UND at 85 °C yielded a hydrogel composite membrane with stronger mechanical properties; these values were 9.94 MPa, 627.20%, and 1.49 MPa. These composite hydrogels have 3D porous structures with pore sizes ranging from 2 to 20 μm, and there was no phase separation. Murine L-929 cells adhered, grew, and proliferated normally on the scaffold. The digestion rates of PVA-XS in both trypsin and alkaline protease were faster than that of high temperature-annealed cast PVA-XS (acPVA-XS). Implantation in vivo did not induce an obvious tissue immune response. The mechanical properties and enzymatic degradation rate of PVA-XS were controlled by UND temperature and XS incorporation. Therefore, the UND-based composite hydrogel has potential applications in the implantation, repair, and regeneration of biological tissues.
研究领域:
材料科学
·
生物医学工程
·
组织工程
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jin Huang,Kai You,Xiangmei Liu,Yi Wang,Congyang Mao,Chaofeng Wang,Yufeng Zheng,Shengli Zhu,Zhaoyang Li,Hui Jiang,Zhenduo Cui,Jie Shen,Shuilin Wu
Periodontitis represents a chronic inflammatory disorder triggered by multi-species oral bacterial infection of periodontal tissues. If left untreated, this condition can culminate in severe consequences, including alveolar bone resorption and loss of tooth support architecture. Given these clinical challenges, the development of a safe and effective strategy for plaque elimination and dental whitening remains a critical unmet need in periodontal care. To address this, we report the design and fabrication of polyvinyl alcohol (PVA)-based hydrogel loaded with tannic acid @ nanocellulose nanoparticles (PTAN). This novel composite system demonstrates dual functionality: robust antibacterial activity and biocompatible teeth-whitening efficacy. Under ultrasonic irradiation, the cavitation-generated mechanical forces drive targeted attachment of tannic acid @ nanocellulose nanoparticles (TAN) to bacterial surfaces. This process induces bidirectional impact and frictional forces, rendering bacterial cell walls mechanically sensitive. Additionally, it promotes the production of hydroxyl radicals and singlet oxygen, while enhancing the transmission of tannic acid-mediated death signals to pathogens. Concurrently, the hydrogel's porous architecture synergizes with the polyphenolic binding capacity of tannic acid to pigmented substrates. This dual-mechanism enables efficient capture and adsorption of chromogenic molecules within the hydrogel matrix. Collectively, our findings establish PTAN hydrogel as a rapid, highly effective, and biocompatible strategy for simultaneous plaque removal and dental decolorization, offering promising translational potential for clinical periodontal therapy.
研究领域:
牙科
·
生物材料
·
纳米技术
·
抗菌治疗
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhonghao Jiang,Zhuo Yan,Shumin Yan,Zhihao Chen,Lianhai Li,Guoliang Huang,Li Li,Jiantao Lin
Diabetic wounds are one of the most problematic complications among diabetic patients, often progressing to chronic, persistent ulcers that are a leading cause of amputation and disability. The constant accumulation of reactive oxygen species (ROS) at diabetic wound sites, along with bacterial infection and an excess of pro-inflammatory M1-type macrophages, are key factors contributing to the difficulty of wound healing. Nanofibrous membranes can be used directly in diabetic wounds with the dual function of adsorbing tissue exudate and releasing drugs. Cerium oxide nanoparticles can be used in nanotherapy to reduce the accumulation of chronic inflammatory substances due to their excellent antioxidant properties. The antioxidant properties can be further improved by doping with other metal elements. In this paper, we constructed a nanofibrous membrane based on cerium manganese nanoparticles (CeMn NPs) for the treatment of diabetic wounds. The nanofibrous membrane was loaded with cerium manganese nanoparticles and nitric oxide donor SNAP, named PVA-CS-CeMn NPs-SNAP nanofibrous membrane. The PVA-CS-CeMn NPs-SNAP nanofibrous membrane was able to cover the wounds of diabetic mice with slow release of CeMn NPs and SNAP. The nanoparticles could scavenge ROS accumulated at the wound site and regulate the macrophage phenotype at the wound site, increasing the proportion of anti-inflammatory M2-type macrophages. In addition, SNAP had antimicrobial and vascular regenerative effects at the wound site. Together, these synergistic effects resulted in faster wound healing and reduced tissue inflammation in diabetic mice, and no organ toxicity was observed. Overall, our results indicate that PVA-CS-CeMn NPs-SNAP nanofibrous membranes have significant potential for the treatment of diabetic wounds and provide a strong scientific basis for the development of novel diabetic wound treatment materials.
研究领域:
生物医学工程
·
纳米医学
·
伤口愈合
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糖尿病并发症
·
组织工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Fan Wang,HuaQing Zhang,ChunLing Liu,Wen Bao,YaJuan Hu,Xieraili Maimaitiyiming
PVA-based conductive hydrogels have enormous potential for applications in wearable flexible electronic devices, but their low ionic conductivity and mechanical strength hinder their practical utility. To address this challenge, we propose a PVA-based incorporating metal salt and zwitterion. We use PA(phytic acid) and HPMC (hydroxypropyl methylcellulose) - compatible properties to prepare PSBMA 1 -PMAZ 1.5 interpenetrating conductive hydrogel with good electrical signal responsiveness, repeatability, compression resistance, and low hysteresis (≤11.68 %). The hydrogel-based flexible strain sensor has a wide detection range, high sensitivity (GF = 1.1 at 0 − 600 %), stable electrical signal response to variations in temperature and humidity, and human movement detection capabilities. The detection range of hydrogel - based supercapacitors is 25 °C - 40 °C, which indicates that the device assembled with activated carbon as the electrode has good capacitance characteristics, and the multifunctional characteristics of PSBMA 1 -PMAZ 1.5 hydrogels are poised to serve as a demonstration for a new generation of flexible electronic products.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yunhui Lin,Ming Zhang,Youzuo Hu,Shu Zhang,Ziqiang Xu,Tingting Feng,Haiping Zhou,Mengqiang Wu
Zn-powder based anodes are considered as candidates for Zn-based batteries in practical industrial applications in terms of cost, large-scale processing, versatility and tunability. However, Zn-P-based anodes suffer from even more severe side effects including corrosion, passivation, and uncontrolled dendrite growth. Herein, we successfully fabricated nitrogen-doped carbon coating layer on Zn particles (Zn-NC) as anode material for more homogeneous Zn deposition by inducing more zincophilic site on N-doped carbon layers and enhanced electrical connection with carbon networks on Zn-NC particle surface. Nevertheless, metallic Zn deposited on Zn-NC surface still suffers from unavoidable side effects with continuous cycling, even though the dendrite growth was suppressed. It is worth mentioned that PVA-gel electrolyte greatly improves the cycling performance of Zn-NC with limited water content, which can alleviate side reactions. Experiments and simulations address the importance of NC layers with higher electricity, chemical stability, and zincophilic property, as well as the role that PVA-gel electrolyte plays for the further improved cycling performance. Zn-NC with PVA-gel electrolyte achieves ultra-long cycling hours with over 3500 h at 1 mA cm −2 and 850 h at 5 mA cm −2 in symmetrical cells. This study provides a promising pathway and in-depth mechanistic analysis for Zn-powder based anode in versatile applications especially for flexible energy-storage devices.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2025
·Vol. 12
·期 1
·015403
·
IF 2.2
Huinan Zhang,Dongchao Ji,Kunlong Zhao,Zhuoheng Li,Shuo Yang,Peng Wang,Wenxin Cao,Yu Sun
Biomedical scaffolds are increasingly used in bone repair due to their exceptional ability to support cell growth and proliferation. This study developed a multifunctional poly(lactic-co-glycolic acid) (PLGA)/polyvinyl alcohol (PVA)/metronidazole coaxial electrospun nanofiber membrane to overcome the limitations of current bone tissue self-repair mechanisms. Optimization of the coaxial electrospinning parameters significantly improved the membrane's overall performance. Mechanical property testing revealed that the tensile strength increased from 4.304 ± 0.079 MPa to 6.915 ± 0.032 MPa as the shell layer feeding rate was increased. Drug release studies demonstrated a marked reduction in the initial burst release of metronidazole as the shell layer thickness increased. The release amount decreased from 86% to 34% by the third hour, and the release continued over the course of one week. Furthermore, the in vitro release model transitioned from first-order kinetics to Peppas-Sahlin kinetics. In vitro studies confirmed that the metronidazole-loaded coaxial fiber membrane exhibited excellent biocompatibility, antibacterial properties, and osteogenic potential. In conclusion, PLGA/PVA controlled-release nanofiber membranes loaded with antibacterial drugs offer great promise for bone tissue regeneration therapies.
研究领域:
生物医学工程
·
组织工程
·
药剂学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Xiuxian Gu,Junhui He,Xiaochun Hu
Robust antifogging films have significant potential for a wide range of applications on the surfaces of transparent materials. Nevertheless, currently either their preparation methods are complex or their mechanical properties such as hardness, wear, scrub and water resistance are yet to be improved before they can be applied in practical applications. In this work, we have developed a facile room temperature approach to fabricating free-standing films of excellent antifogging properties and mechanical robustness. Glutaraldehyde (GA) was used to cross-link polyvinyl alcohol (PVA) and ultraviolet (UV) light was applied to initiate polymerization of poly (ethylene glycol) diacrylate (PEGDA), leading to robust interpenetrating networks (IPN). The films also had excellent mechanical properties with pencil hardness up to 8H, Taber wear-resistance up to 10,000 cycles, and sponge scrub resistance up to 300 cycles. The tensile strength and tearing strength of films reached as high as 100 MPa and 700 kN/m, respectively, much higher than those of free-standing films reported so far. This approach may hold great potential for broad application on various substrates, particularly those with low glass transition temperatures (e.g., transparent plastic films). It may expand the possibilities for future applications of free-standing antifogging films for screens, optical lenses and so on.
研究领域:
材料科学
·
聚合物化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yan Zhu,Jun Zhang,Shikui Jia,Lei Wu,Shihao Wang,Wenwen Wang,Yaoyao Zhang,Feng Xu,Wei Liu
Solar interface evaporator has been played an increasingly important role for sewage treatment and desalination, etc. due to its processability, comprehensive application. However, for instance, energy collection rate and utilization efficiency for solar interface evaporation has still an urgent need for improvement. Hence, a series of MXene/ reduced carboxylated carbon nanotubes (RCNT)/ Polyvinyl alcohol (PVA) (MCP) solution were directional frozen and then dried by low-temperature vacuum method to successfully prepare a bionic lotus-like multi-layer PVA-based aerogel. Particularly, when the component ratio of the MXene: RCNT: PVA was 6: 24: 70, the water and brine evaporation rate of M 6 /C 24 /P 70 composite aerogel reached respectively 3.35 kg·m −2 ·h −1 and 2.51 kg·m −2 ·h −1 , while for the PVA aerogel were just 0.63 kg·m −2 ·h −1 and 0.37 kg·m −2 ·h −1 . Importantly, the evaporation efficiency for the M 6 /C 24 /P 70 can achieve 132.7 %, which exceeds that of most of evaporators in the published reports and the phenomenon was defined firstly self-accelerating evaporation. This work not only explores the preparation strategy for the distinguished biomimetic solar-derived evaporator, but also broadens the functional application scope of PVA-based aerogels.
研究领域:
材料科学
·
化学工程
·
环境工程
·
纳米技术
·
能量转换
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Siyuan Zhang,Zisen Li,Jinlei Tao,Jian Jiao
Optimizing the composition and structure of polymers and carbon nanomaterials to obtain composite films with excellent mechanical and electromagnetic wave (EMW) properties is an excellent solution for exploring EMW absorbing materials. In this work, a flexible composite film with a regular three-dimensional network structure was designed and prepared. The modified rGO@MWCNTs/Fe 3 O 4 -PVA composite nanofilm with optimized composition and structure has a multi-component heterogeneous interface, three-dimensional network structure. The composite film has high EMW absorption performance, excellent flexibility, mechanical strength and stability, and can be used in a wide range of application scenarios. At a thickness of 2.8 mm, the effective absorption bandwidth ( f E ) reaches 3.72 GHz, the minimum reflection loss (RL min ) is -48.99 dB, and the tensile stress reaches 32 MPa. This work realizes the regulation of the mechanical properties and EMW absorbing properties of the composite film, and provides an efficient and stable flexible composite EMW absorbing material.
研究领域:
材料科学
·
电磁工程
·
纳米技术
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Shujia Chen,Tianyun Dong,Yuwei Lan
Flexible strain sensors have garnered significant attention for applications in wearable electronics and human–machine interfaces. However, many previously reported sensors suffer from limited deformability, complex fabrication, and unstable signal output under dynamic conditions, largely due to the low polarity, poor flexibility, and weak interfacial compatibility of commonly used polymer substrates. In this work, we report a PVC/PVA/MCNTs composite, in which the incorporation of PVA significantly improves the matrix polarity and interfacial interaction, thereby enhancing flexibility and processability. Fabricated via a simple solvent-casting method, the sensor exhibits high stretchability (>300 %), low hysteresis (2.04 %), fast response (240 ms), and stable performance over 1000 dynamic cycles. The sensor enables accurate, real-time monitoring of human joint movements and tracks varying bending angles of robotic fingers, confirming its practical value in biomechanical sensing and soft robotics control. These results demonstrate that the developed composite substrate exhibits excellent mechanical and sensing performance. The introduction of dual substrate components enhances matrix polarity, thereby broadening the range of compatible functional fillers and establishing a promising platform for future flexible electronic applications.
研究领域:
材料科学
·
传感器技术
·
可穿戴电子学
·
生物力学
·
软体机器人
✓ 已验证
产品关联
DOI
高影响因子
Food Packaging and Shelf Life
·
2023
·
IF 8
Xiaofang Zhao,Zhaolian Han,Shanshan Zhang,Gulijiannaiti Abuduaini,Xin Wen,Tingting Liu,Zhiqiang Cheng
This study aimed to investigate the physicochemical properties, antioxidant and antibacterial activities of Tremella polysaccharides combined with soybean protein isolate (TFP-SPI), natural antibacterial agent ε-polylysine (PL) and polyvinyl alcohol (PVA) hybrid membrane and its applicability in the blueberry preservation. In this study, TFP-SPI was successfully prepared, and it was mixed with PL and PVA to prepare nanofiber membranes. FTIR results showed that TFP-SPI had hydrogen bond interaction. The physicochemical properties showed that the incorporation of TFP-SPI improved the hydrophilicity and mechanical properties of the membrane, providing the best water vapor barrier performance. In vitro antioxidant experiments showed that PVA/TFP-SPI/PL membranes possessed antioxidant capacity . In vitro antibacterial experiments showed that PVA/TFP-SPI/PL membranes had antibacterial activity, especially against Staphylococcus aureus . The results of fruit preservation showed that PVA/TFP-SPI/PL membrane could effectively extend the shelf life of blueberries and maintain good quality. Therefore, PVA/TFP-SPI/PL membrane is a potential active packaging material with promising application prospects.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）