Journal of Bioresources and Bioproducts
·
2024
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IF 20.2
Yuanlong Guo,Pengcheng Liu,Lei Deng,Changwei Lui,Michael North,Gang Hu,Qitian Huang,Zongbao Kent Zhao,Haibo Xie
Phenolation is one of the effective strategies to synthesize lignin-based polyphenols, improve lignin's properties, and extend its value-added applications in biological, medicinal and cosmetic fields. Herein, by taking the structural feature advantage of lignin, an effective and green strategy was developed to molecularly engineer lignin into a robust lignin-3-(2-hydroxyphenyl)propionate ester (LPPE) derivative via a transesterification reaction between 3,4-dihydrocoumarin (DHC) and the aliphatic hydroxyls in lignin under organocatalysis. The strategy is optimized and the novel derivative was systematically characterized by 1 H, 13 C and 31 P nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopy. The findings indicated that the successful introduction of 3-(2-hydroxyphenyl)propionate groups using a OH groups/DHC/organic base molar ratio of 1꞉1꞉0.3 at 120 °C for 6 h increased the content of phenolic hydroxyl groups from 1.793 1 to 3.017 9 mmol/g, and the LPPE exhibited excellent ultraviolet-absorbing and antioxidant performance with up to 90% free radical scavenging activity within 20 min using 5 mg/mL of LPPE. In addition, good biocompatibility and a high Sun protection factor (SPF) value of 40.9 were achieved at 5% ( w ) dosage of LPPE in the cream, indicating its significant application potential in sunscreen.
研究领域:
生物化学
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化妆品科学
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材料科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Tianli Liu,Jian Zhang,Ye Xiao,Yuting Xia,Mingjie Xu,Jingxi Zhang,Ruiping Liu,Chang-An Wang
Supported noble metal catalysts have a high catalytic activity and selectivity. However, fast surface reconstruction and sintering of noble metal particles during a high-temperature reaction process pose a major challenge to the stability of the catalysts. In this study, sinter-resistant supported noble metal catalysts were prepared by constructing an oxide nanotrap. Pt/Al2O3 was used as a research paradigm. Dopamine was applied as a structure-directing agent and pore-forming agent to form a porous CeO2 overlay on the surface of Pt/Al2O3 and encapsulate Pt nanoparticles. Due to the confinement of CeO2 and its interaction with Pt, the modified Pt/Al2O3@CeO2 exhibits superior catalytic activity and antisintering stability. This method can be extended to other supported catalyst systems.
研究领域:
催化化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Zhengliang Liu,Wei Zhang,Huanpeng Bu,Ken Chen,Yan Jiang,Huijun Liu,Chaoliu Zeng
A novel SiC–Si coating with a high amount of net-like distributed Si was fabricated on the graphite substrate by liquid silicon infiltration (LSI) method to improve the oxidation-resistant performance. The mass gain of this LSI coating after 300 h oxidation at 1873 K was only 3.018%, suggesting an excellent static antioxidant property at 1873 K. The detailed oxidation mechanism of this LSI coating was explored in this work. It was found that the high amount of Si with the net-like distribution in this LSI coating promoted the passivation growth of SiO 2 glass layer and prevented the SiO 2 glass from crystallizing into cristobalite. In addition, the Si in this coating retarded the active oxidation and enhanced the coating stability. In contrast, the infiltration (VSI) SiC–Si coating presented an apparent mass loss, and the pack cementation (PC) SiC coating showed the catastrophic failure. The oxidation mechanisms of these two coatings were also discussed against the backdrop of the LSI coating with high antioxidant performance.
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
CERAMICS INTERNATIONAL
·
2018
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IF 3.057
Guangyuan Yang,Xu Wang,Zhixiong Huang
To improve the oxidation resistance ability of carbon fiber (CF) in the high temperature environment, the composite electroplating method had been used to fabricate SiC-ZrO-MoSi 2 /Ni coating at the surface of CF. Both nanoparticles and Ni-matrix were plated onto CF successfully while the mechanical property of coated CF was only slightly weakened. The oxidation resistance performance of CF and the CF reinforced phenolic resin composites had been improved obviously. The microstructure of coatings was investigated by scanning electron microscope and X-ray diffraction analysis. Thermal gravimetric analysis was applied to test the anti-oxidation ability of coated CF. The mechanism of oxidation process had been discussed. It can be concluded that composite plating is an effective way to make composite coatings which can enhance the anti-oxidation ability of CF.
研究领域:
材料科学
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表面工程
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DOI
高影响因子
POLYMER COMPOSITES
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2025
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IF 4.7
Jie Zhang,Qingwen Yun,Rongying Yin,Yebo Du,Haiming Cheng,Lingze Bu,Changqing Hong,Xinghong Zhang
Lightweight ablative thermal protection materials (TPMs) with excellent ablation, thermal insulation, and anti-oxidation are urgently needed for aerospace vehicles. Herein, a distinct strategy was proposed that uses aerogel-like polysiloxane (SiA) as a matrix, and carbon-bonded carbon fiber (C/C) composite as reinforcement to construct a lightweight SiA impregnated C/C (C/C-SiA) composite, through vacuum impregnation, sol–gel, and atmospheric pressure drying. The intriguing characteristics including high mechanical strength and stiffness, thermal stability and oxidation resistance, and a low thermal conductivity of 0.063 W/(mK) were integrated into the low-density (0.238–0.306 g/cm 3 ) C/C-SiA. The synergistic effect originated from pyrolysis products of SiA including silicon oxycarbide ceramic to inhibit oxygen diffusion and pyrolysis gas to retard convective heat transfer, the high emissivity surface re-radiation to dissipate heat and transverse thermal conductivity to regulate heat transfer by C/C, enables C/C-SiA to deliver remarkable thermal insulation performance (20 mm backside temperature below 40°C on a heating plate for 1800 sec) and ablation resistance (near-zero surface recession of 0.18 μm/s exposed to 1300°C flame for 1200 sec). The ceramifiable strategy can be extended to other preceramic polymers, such as polycarbosilane, polysilazane, and ZrO 2 precursor, which may open a new avenue for improving lightweight ablative TPMs. Highlights Aerogel-like polysiloxane lightweight ablative material was fabricated. The synergistic effect gives excellent mechanical and thermal properties. Surface re-radiation and heat blockage dissipate the main heat continuously. In-situ formed ceramic to inhibit diffusion enables long-term anti-oxidation.
研究领域:
材料科学
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航空航天工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry B
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2025
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IF 5.7
Huizhu Wang,Miao Zhang,Ying Chen,Shaopei Ding,Meng Qin,Tong Wu,Jianshu Li,Jing Xie
Osteoarthritis (OA) is a degenerative bone and joint disease characterized by cartilage degradation and an inflammatory environment. Consequently, strategies aimed at remodeling the damaged joint microenvironment by concurrently enhancing lubrication and alleviating inflammation are essential for improving therapeutic efficacy. Herein, we designed a multifunctional cyclic brush polymer nanomicelles (CP) composed of surface-grafted zwitterionic poly(sulfobetaine methacrylate) (PSBMA) brushes and a hydrophobic core of PHEMA. Benefiting from the unique cyclic brush topology and hydrated lubrication properties of PSBMA, CP exhibited effective lubrication. Tribological and wear tests showcased CP significantly reduced the coefficient of friction and surface wear under shear forces. Furthermore, CP served as a nanocarrier for encapsulating the anti-inflammatory drug resveratrol (RSV) through hydrophobic interactions, serve as drug- loaded nanomicelles CP@RSV. In vitro studies indicated that CP@RSV exhibited excellent cytocompatibility, effectively eliminated reactive oxygen species (ROS) in cells and reversed mitochondrial dysfunction, thereby modulating the oxidative stress microenvironment. In conclusion, CP@RSV integrates enhanced lubrication with antioxidation properties, representing a promising strategy for the treatment of OA.
研究领域:
生物材料学
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医学
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药剂学
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产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 63
·期 9
·3105-3115
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IF 3.2
Jie Zhang,Zhe Kong,Xiangyao Li,Chuang Zhang,Kaijun Xu,Guiqing Cheng,Zhongwei Wang,Qing Yu
Despite the advantage of biodegradability, polylactic acid (PLA) has some processing and application drawbacks, such as poor thermal oxygen stability. Herein, the modified PLA samples were prepared by mixing PLA granules, acetyl tributyl citrate (ATBC), and Scutellaria baicalensis extract (SBE) obtained from traditional Chinese herbal medicine. Results revealed that the introduction of SBE improves the thermal oxidation stability of PLA-ATBC matrix. When the content of SBE was 2.0 wt%, the oxidation onset temperature value of the modified sample is increased by 68°C versus PLA-ATBC. The excellent antioxidant performance is attributed to the outstanding free radical quenching capacity of SBE. The introduction of SBE slightly decreased the degradation rate of PLA-ATBC in an enzyme degradation process, which may be due to the SBE reducing the enzyme activity. Moreover, the addition of small amounts of SBE into the PLA-ATBC matrix has little influence on polymer crystallization behavior, just decreased by ca. 8.6% (PLA-ATBC-SBE 2.0 sample). SBE has no obvious effect on the water vapor permeability and surface wettability of PLA-ATBC membranes. All results reveal that the SBE could play a role in the thermal oxygen stability of PLA-ATBC without much change in its other performances.
研究领域:
材料科学
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生物学
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
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2022
·Vol. 29
·期 11
·1-10
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IF 3.061
Sui Kun,Mei Fengce,Li Xiangyao,Wang Zifan,Wang Zhongwei,Han Yuxi,Yu Qing,Cheng Guiqing
Forsythia suspensa extract (FSE) obtained from traditional Chinese herbal medicine was employed as the stabilizer for polyethylene (PE). The effects of FSE on the thermos-oxidative stability, processing stability and mechanical properties of PE have been discussed through comparison of the performance of pure PE and modified PE samples on oxidation induction time (OIT), melt flow rate (MFR) and tensile tests. With the addition of FSE, the thermal oxidation stability of samples noticeably improved even after multiple extrusions: An OIT value of ca. 65.0 and 45.5 min could be achieved with PE-FSE 0.8 -626 sample after the first and fifth extrusions, which is extremely higher than pure PE. The improved antioxidant performance could be ascribed to the attractive free radical scavenging efficiency of FSE, confirmed by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical–scavenging experiment. MFR results showed that FSE could effectively enhance the processing stability of PE matrix, the change of MFR after five extrusions was only 0.22 g/10 min for PE-FSE 0.8 -626 sample. Moreover, the tensile strength and elongation at break increased after the addition of FSE, which also maintained through the five extrusions. In addition, the cooperation of FSE and Ultranox 626 on the stability of PE was also explored. All results reveal that forsythia suspensa extract was good and multifunctional stabilizer for PE. This study opens up novel opportunities in utilizing traditional Chinese herbal medicine as natural antioxidants for the thermal oxidation stability of polyolefin, which is benefit for the development of sustainable and environmental friendly polymers.
研究领域:
材料科学
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中药学
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高分子化学
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DOI
高影响因子
Journal of Materials Chemistry B
·
2024
·Vol. 12
·期 28
·6927-6939
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IF 6.1
Xue Luo,Huan Liu,Jing Wen,Jiaxin Hu,Yongzhi Li,Guangjun Li,Guyu Dai,Yubao Li,Jidong Li
Radiotherapy is a pivotal means of cancer treatment, but it often leads to radiation dermatitis, a skin injury caused by radiation-induced excess reactive oxygen species (ROS). Scavenging free radicals in the course of radiation therapy will be an effective means to prevent radiation dermatitis. This study demonstrates a novel double network hydrogel doped with MoS2 nanosheets for the prevention of radiation-induced dermatitis. The resultant SPM hydrogel constructed from polyacrylamide (PAM) and sodium alginate (SA) nanofiber presented favorable mechanical and adhesion properties. It could conform well to the human body's irregular contours without secondary dressing fixation, making it suitable for skin protection applications. The in vitro and in vivo experiments showed that the antioxidant properties conferred by MoS2 nanosheets enable SPM to effectively mitigate excessive ROS and reduce oxidative stress, thereby preventing radiation dermatitis caused by oxidative damage. Biosafety assessments indicated good biocompatibility of the composite hydrogel, suggesting SPM's practicality and potential as an external dressing for skin radiation protection.
研究领域:
生物医学工程
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皮肤病学
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放射治疗学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Gangjian Guan,Yang Yang,Yuying Zhang,Dongmei Li,Xuedi Zhang
Antarctic krill ( Euphausia superba ) protein, as a type of high-quality protein resources, exhibits favorable bio-compatibility, environmental stability and other beneficial biological values. Nevertheless, the inadequate exploitation and low-value applications have impeded its development in the food industry. Based on the excellent amphiphilic structure of it, Antarctic krill protein, is expected to become a new material for constructing nutrient delivery system. In this study, salt-soluble Antarctic krill protein was used as carrying material to facilitate the delivery of astaxanthin hydrophobic nutrient factors by ultrasonic crushing and self-assembly. The micro-structure, bio-compatibility and antioxidant properties of astaxanthin nanoparticles were characterized and analyzed, so as to expand the application of Antarctic krill protein toward the field of nutrient delivery. The results showed that the astaxanthin nanoparticles prepared on the basis of salt-soluble Antarctic krill protein were spherically distributed, with favorable water solubility and thermal resistance. Furthermore, astaxanthin nanoparticles could enhance the biocompatibility of astaxanthin, and exhibited superior performance to free astaxanthin in inhibiting H 2 O 2 -induced ROS up-regulation and mitochondrial membrane potential depolarization in GES-1 cells. From the perspective of efficiency and multiple utilization of Antarctic krill resources, this study has established an innovative application of salt-soluble krill protein as a new direction of delivery materials.
研究领域:
食品科学
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营养学
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生物材料学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Boyang Jia,Tingting Hao,Yanai Chen,Yawen Deng,Xingzhong Qi,Chengyan Zhou,Yanfang Liu,Shuai Guo,Jianglei Qin
Biodegradable self-healing hydrogels with antibacterial property attracted growing attentions in biomedication as wound dressings since they can prevent bacterial infection and promote wound healing process. In this research, a biodegradable self-healing hydrogel with ROS scavenging performance and enhanced tissue adhesion was fabricated from dopamine grafted oxidized pectin (OPD) and naphthoate hydrazide terminated PEO (PEO NH). At the same time, Fe 3+ ions were incorporated to endow the hydrogel with near-infrared (NIR) triggered photothermal property to obtain antibacterial activity . The composite hydrogel showed good hemostasis performance based on mussel inspired tissue adhesion with biocompatibility well preserved. As expected, the composition of FeCl 3 improved conductivity and endowed photothermal property to the hydrogel. The in vivo wound repairing experiment revealed the 808 nm NIR light triggered photothermal behavior of the hydrogel reduced the inflammation response and promoted wound repairing rate. As a result, this composite FeCl 3 /hydrogel shows great potential to be an excellent wound dressing for the treatment of infection prong wounds with NIR triggers.
研究领域:
生物医学工程
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材料科学
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伤口护理
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产品关联
DOI
PubMed
高影响因子
Materials Today Bio
·
2024
·
IF 8.7
Yachao Yu,Mengyu Yang,Hua Zhao,Chen Zhang,Kaiyue Liu,Jingmei Liu,Chenghao Li,Bingjie Cai,Fangxia Guan,Minghao Yao
Burns represent a prevalent global health concern and are particularly susceptible to bacterial infections. Severe infections may lead to serious complications, posing a life-threatening risk. Near-infrared (NIR)-assisted photothermal antibacterial combined with antioxidant hydrogel has shown significant potential in the healing of infected wounds. However, existing photothermal agents are typically metal-based, complicated to synthesize, or pose biosafety hazards. In this study, we utilized plant-derived blackcurrant extract (B) as a natural source for both photothermal and antioxidant properties. By incorporating B into a G-O hydrogel crosslinked through Schiff base reaction between gelatin (G) and oxidized pullulan (O), the resulting G- O -B hydrogel exhibited good injectability and biocompatibility along with robust photothermal and antioxidant activities. Upon NIR irradiation, the controlled temperature (around 45–50 °C) generated by the G- O -B hydrogel resulted in rapid (10 min) and efficient killing of Staphylococcus aureus (99 %), Escherichia coli (98 %), and Pseudomonas aeruginosa (82 %). Furthermore, the G- O -B 0.5 hydrogel containing 0.5 % blackcurrant extract promoted collagen deposition, angiogenesis, and accelerated burn wound closure conclusively, demonstrating that this well-designed and extract-contained hydrogel dressing holds immense potential for enhancing the healing process of bacterial-infected burn wounds.
研究领域:
生物医学工程
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材料科学
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伤口愈合研究
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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）