Materials Today Communications
·
2025
·
IF 4.5
Ding Shen,Jingbin Hao,Siyu Liu,Md Thowfiqure Rahman,Shuaihang Wang,Sameer Hussain Jhatial
Chronic wounds are often aggravated by bacterial infection and prolonged inflammation, presenting major challenges in clinical wound management. To address these issues, a novel 3D-printed multilayer hydrogel was developed, based on a GelMA-PVA dual-network system incorporating graded concentrations of andrographolide (Andro), a phytochemical with proven antibacterial and anti-inflammatory activity. The GelMA component was photocrosslinked, while the PVA network was physically crosslinked via freeze–thaw cycles, forming a robust interpenetrating structure. The hydrogels were characteriazed using FTIR, XPS, SEM, mechanical testing, swelling analysis, and in vitro release and antibacterial assays. The multilayer patches demonstrated tunable swelling capacity (up to 1938 %), excellent tensile strength (up to 46.7 kPa) and compressive strength (up to 94.3 kPa), and a sustained drug release profile. In vitro studies confirmed enhanced L929 fibroblast proliferation and significant antibacterial activity against E. coli and S. aureus , particularly in the gradient Andro-loaded groups. These results suggest that the 3D-printed GelMA-PVA-Andro patches are promising candidates for advanced wound dressings with integrated mechanical, biological, and pharmaceutical functionalities.
研究领域:
生物材料
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组织工程
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药剂学
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生物医学工程
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微生物学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2023
·Vol. 61
·期 20
·2475-2485
·
IF 3.4
Yi Wang,Yu Miao,Yuxin Cai,Enfu Wang,YiPeng Liang,Jinhuan Zhong,Wenbiao Zhang,Jingda Huang
Development of water-soluble polymer air filtration materials attracts considerable attentions due to their environmentally friendly performance and high efficiency, but the balance of mechanical strength, efficiency and pressure drop still is a severe challenge. Focusing on this issue, polyvinyl alcohol (PVA), bamboo activated carbon (BAC) and sodium lignosulfonate (Ls) were combined to construct an electrospinning system with two filtration functions. In the PVA@Ls@BAC system, the 3D network constructed by the electrospun PVA based nanofibrous could effectively intercept PM2.5, and the introduced Ls enhanced the mechanical strength of PVA nanofibrous due to its good rigidity. In addition, the added negatively charged BAC facilitated the electrostatic adsorption of PM2.5 while also improved the heat resistance of the system. Moreover, polydimethylsiloxane (PDMS) was introduced to enhance the water resistance of the system. The resulting electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane exhibited excellent air filtration performance (98.67%), water repellency (123.7° of WCA), and reusable performance, as well as having good mechanical property and the tensile fracture strain reaching 112%. Because of its good performance and simple preparation process, the electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane has great application space. Graphical
研究领域:
材料科学
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环境工程
·
纳米技术
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产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Anni Fu,Ziyang Qiu,Qiuxun Liu,Ye Chen,Yuxuan Hu,Ximei Liu
Solar-driven interfacial evaporation holds great promise for clean water production, particularly in seawater desalination and wastewater purification. However, the limited evaporation performance of evaporators and their incapability to degrade organic contaminants hinder their practical applications. Here, we develop a bifunctional frustum-array solar-driven evaporator with high efficiency in both seawater desalination and photocatalytic dye degradation. Our evaporator, designated as FATPE, is fabricated via a template-assisting method with Ti 3 O 5 /PVA/PAM hydrogels to create a frustum-array structure. Under 1 sun irradiance (1 kW m -2 ), FATPE achieves an exceptional evaporation rate of 4.34 kg m -2 h -1 , energy efficiency of 95.90%FATPE, as well as excellent desalination capability with a salt rejection rate exceeding 99.90% in simulated seawater with varying salinities. Furthermore, FATPE can realize efficient photocatalytic degradation of varying organic pollutants, exemplified with a methylene blue (MB) degradation rate of 85.37%. This work realizes the dual functional synergy of high-efficiency water purification and photocatalytic dye degradation, offering a promising strategy for producing clean water from seawater and dye-contaminated wastewater in coastal regions.
研究领域:
环境科学技术
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材料科学
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太阳能利用
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水净化
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光催化
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产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 12
·1544
·
IF 2.9
Xiansheng Cao,Xueping Li,Ruchun Wu,Bao Liu,Wenfei Lin
As an environment-friendly biodegradable material, poly (vinyl alcohol) (PVA) has been focused on improving performance and expanding its applications. In this study, improved performance lignin nanoparticle/PVA composite film was prepared by phenolation of bagasse lignin (BL) using a novel ternary deep eutectic solvent (DES). The effects of introduction of DES-phenolated lignin (DL) nanoparticles with different additions (1, 3, 5, 10 wt%) on the properties of DL/PVA composite film were comprehensively studied by mechanical performance test, UV-shielding performance test, contact angle measurement, thermogravimetric analyses and DPPH free radical scavenging activity. The experimental results indicated that lignin nanoparticles (LNPs) were homogeneously distributed in a biodegradable PVA matrix due to hydrogen bonds between the PVA matrix and lignin nanoparticles. With the introduction of DES pretreatment on native bagasse lignin, the various performances of DL/PVA composite films, such as tensile strength, surface hydrophobicity, UV-shielding and thermal stability, were enhanced in comparison with both pure PVA film and BL/PVA composite film incorporated with DES-untreated BL. The tensile strength of DL/PVA composite film with 3 wt% addition increased to 97.79 MPa from 69.41 MPa for pure PVA film, and the water contact angle increased from 43.7° to 84.2°. DL/PVA composite film with 10 wt% addition shielded 95.8% of the UV spectrum (400–200 nm). Moreover, after incorporating the DL nanoparticles into the PVA matrix, the as-obtained DL/PVA composite films displayed good antioxidant activity by eliminating most of the DPPH free radicals. With 10 wt% addition of DL nanoparticles, the DPPH radical scavenging activity of DL/PVA composite film increased by about 76% compared with pure PVA film. These enhanced properties were attributed to the more phenolic hydroxyl groups of DL nanoparticles than of BL and the hydrogen-bonding interactions. In conclusion, the DES-phenolation pretreatment of lignin clearly improved the properties of PVA composite films. Furthermore, as both lignin and PVA are biodegradable, the lignin nanoparticle/PVA composite film may be a promising candidate for fully biodegradable robust coating materials with vital potential applications, such as UV-shielding and food packaging, etc.
研究领域:
材料科学
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环境科学
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纳米技术
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化学工程
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聚合物科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2021
·
IF 5.268
Jinsheng Zhou,Zixiang Huang,Yugui Sun,Mengmeng Cui,Zhongkuan Luo,Bin Yu,Xianghui Zou,Huiyuan Hu
An innovative g-C 3 N 4 catalyzed surface-initiated photo atom transfer radical polymerization (SI-photoATRP) has been developed to construct MEDSAH zwitterionic polymer brushes on PVA hydrogel surface. g-C 3 N 4 catalyzed SI-photoATRP is temporal and spatial control. As a heterogeneous reaction system, it can solve the catalyst residues problem. After grafting with MEDSAH, surface chemical composition and morphology of PVA-g-pMEDSAH hydrogel confirmed that MEDSAH was successfully grafted onto PVA hydrogel. Thermal property of PVA-g-pMEDSAH hydrogel decreased and hydrophilicity increased. No statistically significant differences between PVA and PVA-g-pMEDSAH were observed on mechanical properties. Cytotoxicity in vitro of PVA-g-pMEDSAH hydrogel could be considered as no cytotoxicity for L929 and NDHF cells. The antifouling properties of PVA-g-pMEDSAH hydrogel were significantly improved due to the enhancement of the surface hydration and steric repulsion effects caused by pMEDSAH polymer brushes. In addition, g-C 3 N 4 is easier to modify to enhance the photocatalyst property. Thus, the heterogeneous reaction system of g-C 3 N 4 catalyzed SI-photoATRP has huge potential applied in biomaterials surface modification.
研究领域:
材料科学
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高分子化学
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生物材料
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表面工程
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Hui You,Ge Song,Qifan Liu,Chao Yang,Jianhui Qiu,Limin Zang,Hui Liu,Jiucun Chen
Special wettable materials have been shown to be promising for use in oil-water separation and, in particular, hydrogel-based materials have been studied for water separation from oil-water mixtures due to their high hydrophilicity . Here, a superhydrophilic and underwater superoleophobic phosphorylated PVA (PPVA) hydrogel-coated stainless-steel mesh with underwater oil repellency was prepared using a simple and facile route that introduced metal ions for PVA crosslinking. The PPVA hydrogel-coated mesh can not only separate immiscible oil-water mixtures but also separate surfactant-stabilized oil-in-water emulsions with a high separation efficiency (>99.2%). In addition, due to its multiple crosslinked networks, the resultant PPVA hydrogel-coated mesh exhibited good chemical stability and wear resistance and can tolerate high acid, alkali, salty and organic solvents .
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2018
·
IF 3.483
Yanming Lin,Ling Wang,Jinsheng Zhou,Lin Ye,Huiyuan Hu,Zhongkuan Luo,Li Zhou
In this study, we grafted brush-like CBMA copolymer brushes onto the surface of PVA hydrogel membrane through photo-induced electron transfer–reversible addition fragmentation chain transfer (PET-RAFT) polymerization. ATR-FTIR, XPS , AFM , UV–Vis absorption spectra and elemental analysis were adopted to characterize the hydrogels, and equilibrium swelling, water contact angle, vitro cytotoxicity assay, protein adsorption and cells adhesion experiments were used to evaluate the related property of hydrogels. The results of ATR-FTIR and XPS showed that pCBMA was successfully grafted onto the surface of PVA hydrogel membrane. The Ra roughness of hydrogel surface in AFM increased slightly from 5.44 nm to 6.12 nm. Transmittance of the PVA-g-pCBMA hydrogel in the visible range (380 nm-780 nm) was remaining at 91.2%–97.0%. The optimal reaction conditions (CPADB: 1.20 mmol/L, Eosin Y: 0.03 mmol/L and CBMA : 358 mmol/L) were confirmed through control experiments. The equilibrium swelling and water contact angle showed that the swelling ratio increased from 2.06 cm 3 g −1 to 3.65 cm 3 g −1 , while the water contact angle decreased from 45.94° to 18.06° with the increase of grafting ratio (23.92%–55.18%). In vitro cytotoxicity assay by CCK-8 showed that the cells relative viability remained at least 90.55%. Anti-protein adsorption experiment illustrated approximately 57.2% improvement of anti-protein capacity at 37 °C, while cells adhesion experiment also showed about 64.57% improvement of anti-cells capacity. These results revealed the applicability of the oxygen tolerant PET-RAFT mechanism on the PVA modification and it was effective, feasible and non-cytotoxic method to prepare the other functional PVA hydrogel membrane.
研究领域:
材料科学
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聚合物化学
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生物医学工程
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表面科学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qingrong Zhang,Sicen He,Ailian Mei,Wei Xia,Yunchang Cao,Zeying Zhang,Jiezhi Jia,Jiacai Yang,Jiangfeng Li,Gaoxing Luo,Zheng Li
Medical implants, important consumables, significantly promote patients’ healthcare, but still face challenges of foreign body responses and bacterial infection. Hydrogels can be ideal alternative materials, however, a few of them can meet the requirements. Herein, a TAFe@PVA photothermal hydrogel integrating with negative swelling, long-term stability, antibacterial, anti-adhesion, and tissue mechanical matching is developed to solve these issues. The TAFe@PVA hydrogel is crosslinked by H-bonds and microcrystal domains which both can be enhanced by cations or anions based on Hofmeister effect, showing unique negative swelling and long-term mechanical self-enhancement performances in the physiological fluid. Attributing to self-polymerization of tannic acid (TA) and negative swelling of polyvinyl alcohol (PVA) molecular networks, TAFe complexes can be strongly locked in PVA molecular networks, reaching long-term photothermal stability. The TAFe@PVA hydrogel also exhibits great biocompatibility, anti-oxidation, anti-adhesion, and anti-bacterial performances, comparing to the traditional implant material. Since the TAFe@PVA hydrogel can better match with skin tissues, fewer macrophages and myofibroblasts are activated, which depresses unexpected foreign body responses. Finally, the TAFe@PVA hydrogel as the implant can effectively solve abdominal adhesions after abdominal operation and promote defects healing. This study introduces a promising hydrogel implant, which potentially extends hydrogels to wider medical applications.
研究领域:
生物医学工程
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材料科学
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组织工程
·
医疗植入物
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 12
·5605-5620
·
IF 3.591
Yuhua Niu,Xingxing Han,Jie Song,Liangxian Huang
Novel magnetic gel beads were successfully fabricated via a polyvinyl alcohol (PVA) and sodium alginate (SA) double-cross-linked network and loaded with ferroferric oxide@potassium humate (Fe3O4@KHA) nanoparticles. The PVA/SA/Fe3O4@KHA gel beads were found to exhibit an excellent removal efficiency for methylene blue (MB) dye and Pb(II). The physicochemical properties of these gel beads were systematically characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, zeta analysis, Brunauer–Emmett–Teller analysis and vibrating sample magnetometry. The adsorption process was found to follow a pseudo-second-order kinetic model and the experimental data were in good agreement with the Langmuir model, with maximum adsorption capacity values of 781.92 and 347.19 mg g−1 for MB and Pb(II) at 298 K, respectively. The thermodynamic measurements demonstrate that adsorption onto these gel beads was spontaneous, endothermic, and driven by an increase in the system entropy. Furthermore, FT-IR and X-ray spectroscopy investigations demonstrate that the mechanism through which Pb(II) was removed mainly involved chelation by the carboxyl groups, whereas MB adsorption takes place via H-bonding and electrostatic interactions. Notably, PVA/SA/Fe3O4@KHA showed high selectivity for MB adsorption. Additionally, the prepared magnetic gel beads could be readily regenerated and efficiently reused for several cycles and their excellent magnetic properties can simplify the adsorbent separation process.
研究领域:
环境科学
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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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Libing Zheng,Min Tang,Yize Wang,Deyin Hou,Xiaoyu Li,Jun Wang
In this study, a novel Janus membrane was developed by constructing Cu-1,3,5-benzenetricarboxylic acid (Cu-BTC) metal–organic frameworks (MOFs) hydrophilic coating on polyvinylidene fluoride (PVDF) membrane. The Cu-BTC@PVA/PVDF Janus membrane showed a rougher surface with an in-air water contact angle of 27.4˚ and an underwater oil contact angle of 152.8°. The Cu-BTC had minimal impact on mass transfer efficiency in MD process, and the Janus membrane exhibited excellent anti-oil-fouling and anti-NOM-fouling properties. The formation of the hydration layer, the slip boundary effect, and the electrostatic repulsion by the hydrophilic serrated interface were the main antifouling mechanisms. The hydrophobic-hydrophobic interaction was the main fouling mechanism of PVDF membrane for both oil and NOM. Sodium alginate (SA) displayed severe fouling with a compacted fouling layer in PVDF membrane due to the concentration polarization (CP) and gel layer formation. Inorganic fouling was the predominant fouling for the high CP and inorganic–organic coupling. While humic acid (HA) surpassed SA in Cu-BTC@PVA/PVDF Janus membrane for the stronger hydrogen bond, hydrophobic-hydrophobic interaction was significantly alleviated. Inorganic fouling was also significantly alleviated due to the strong electrostatic repulsion effect. The prepared Janus membrane has great potential to promote MD dealing with hypersaline industrial wastewaters containing complex organic matters.
研究领域:
材料科学
·
环境工程
·
膜技术
·
水处理
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Jintian Wu,Gaojing Xia,Shangbo Li,Lupei Wang,Jianjun Ma
Ionogels combine the virtues of polymers and ionic liquids (ILs) and have greater potential for supercapacitors (SCs) than hydrogels and organic gels. Undoubtedly, the self-healing ability of ionogels dramatically improves the reliability of related SCs. Herein, we reported a dynamic diol-borate ester-cross-linked polyvinyl alcohol (PVA) ionogel electrolyte for smart double-layer capacitors. The results indicated that 1-ethyl-3-methylimidazolium chloride (EmimCl) could form a strong interaction with the hydroxy groups on PVA, thereby depressing the crystallization efficiently. The resultant ionogel exhibited an amorphous nature with excellent ionic conductivity up to 2.43 × 10–3 S/cm, high flexibility, and 95% healing efficiency when the IL content was 90 vol %. It could be inferred from the fact that EmimCl acted not only as an ion provider to improve the ionic conductivity but also as a plasticizer to enhance the chain mobility and self-healing efficiency. Based on the unique properties of PVA-boric acid/EmimCl ionogels, a flexible and self-healable SC was assembled. The as-prepared SC delivered a specific capacitance of 90 F/g at 0.1 A/g and retained 98% capacitance after 3000 charge–discharge cycles at a current density of 2 A/g. More interestingly, it could tolerate physical bending and healing without significant performance deterioration. The present study provides a novel strategy to prepare self-healable ionogel electrolytes that can be applied to smart energy storage devices.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2024
·
IF 6.1
Longkang Li,Huipeng Li,Huan Zhou,Zhentian Diao,Yanjie Bai,Lei Yang
The repair capacity of skeletal muscle is severely diminished in massive skeletal muscle injuries accompanied by inflammation, resulting in muscle function loss and scar tissue formation. In current work, we developed a tannic acid and silicate ions functionalized tissue adhesive poly (vinyl alcohol) (PVA)-starch composite hydrogel, referred as PSTS. It was formed based on the hydrogen bonds of tannic acid to organic polymers, as well as silicate-tannic acid ligand interaction. PSTS could be gelatinized in minutes at room temperature with crosslinked networks formation, making it applicable for injection. Further investigations revealed that PSTS owned skeletal muscle comparable conductivity and modulus to act as a temporary platform for muscle repairing. Moreover, PSTS could release tannic acid and silicate ions in situ to inhibit bacterial growth, induce vascularization, and reduce antioxidation, paving the possibility to create a favorable microenvironment for skeletal muscle regeneration and tissue fibrosis control. The in vivo model confirmed that PSTS could enhance muscle fibers regeneration and myotubes formation, as well as reduce infection and inflammation risk. These findings thereby implied the great potential of PSTS in the treatment of formidable skeletal muscle injuries.
研究领域:
生物材料
·
组织工程
·
再生医学
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生物医学工程
·
肌肉骨骼研究
✓ 已验证
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）