Advanced Industrial and Engineering Polymer Research
·
2025
·
IF 12
Shuo Zhang,Qian Zhang,Xiaowei Huang,Xin Ning,Jinfa Ming
Daytime radiative cooling as an environmentally energy-saving strategy, achieves cooling without any power consumption by reflecting sunlight and radiating energy to outer space. In our work, an eco-friendly and degradable poly(lactic acid) (PLA) fibers derived from discarded nonwovens are used to prepare aerogels by combing with ZrO 2 nanoparticles with silane coupling agent (VTMS) crosslinking. The composite aerogel with low density (26.3-30.7 mg/cm 3 ) exhibits high solar reflectance (77%), emissivity (94.31%), low thermal conductivity, and high compressive stress (9.0 kPa under 60% compressive strain). Thermal insulation test demonstrates that the aerogel can achieve temperature drops of 31.3 °C and 41.4 °C under the temperature of heating table 60 °C and 80 °C. Radiative cooling test shows aerogel with 15 wt% ZrO 2 can achieve a temperature drop of 9.14 °C during daytime. Meanwhile, the aerogel cooler presents excellent superhydrophobic (150°), self-cleaning performance, and cyclic compression performance. This findings will promote the field of passive radiative cooling toward a greener and more sustainable direction.
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高影响因子
JOURNAL OF STORED PRODUCTS RESEARCH
·
2025
·
IF 2.8
Dongxiang Li,Gaihuan Ren,Baokui Yuan,Zhenhua Cui,Yunhe Zhang,Shenpeng Hu,Wen Sun,Wenjing Yu,Weijie Zhang,Dongxu Lu,Jianxin He
Foodborne illnesses caused by pathogenic bacteria pose a significant threat to food safety and human health. In this study, a pH-responsive PLA/ZIF-8@CA packaging membrane developed by polylactic acid (PLA) nanofiber as a matrix, where ZIF-8 was loaded via in-situ growth. The membranes were then immersed in CA to produce PLA/ZIF-8@CA nanofiber membrane, effective encapsulation of CA to address issues of volatility of the CA. The deterioration of ZIF-8 in an acidic environment leads to the pH-responsive release of CA from the PLA/ZIF-8@CA nanofiber membrane. The XRD and FT-IR characterization confirmed the successful encapsulation of CA within ZIF-8 and its uniform loading onto the PLA nanofiber matrix. The PLA/ZIF-8@CA nanofiber membrane demonstrated exceptional flexibility, a noteworthy antioxidant activity (radical scavenging rate of 92.05 %), outstanding sustained release performance, and exceptional antibacterial efficacy against Escherichia coli and Staphylococcus aureus (inhibition rates all exceeded 99 %). Furthermore, the PLA/ZIF-8@CA nanofiber membrane exhibited high biological safety, as evidenced by the 100 % survival rate of zebrafish after 15 days. The membrane also exhibited significant soil biodegradability, with complete degradation achieved after 150 days, resulting in a weight loss rate of 100 %. The pH-responsive PLA/ZIF-8@CA nanofiber membrane, which has been demonstrated to exhibit excellent performance, has been utilized as an active packaging in the preservation of broccoli, thereby effectively prolonging its shelf life from 5 to 9 days. The findings underline the potential of this pH-responsive membrane for utilization in active packaging systems for food preservation.
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高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2021
·
IF 5.875
Siyu Sun,Xiyou Du,Manfei Fu,Abdur Rauf Khan,Jianbo Ji,Weidong Liu,Guangxi Zhai
In this study, galactosamine-modified poly(ethylene glycol)-poly(lactide) (Gal-PEG-PLA) polymers were synthesized and Gal-PEG-PLA/D-α-tocopherol polyethylene glycol 1000 succinate (TPGS) micelles named as GPP micelles were designed to promote the oral absorption of a hydrophobic drug, curcumin (CUR). CUR-loaded Gal-PEG-PLA/TPGS micelles (CUR@GPP micelles) were fabricated using the thin-film dispersion method. CUR@GPP micelles had a size of about 100 nm, a near-neutral zeta potential , drug loading (DL) of 14.6%, and sustained release properties. GPP micelles with high Gal density (GPP3 micelles) were superior in facilitating uptake in epithelial cells and improving intestinal permeation. In situ intestinal absorption studies suggested that the jejunum and ileum were the best absorption segments in the intestinal tract. Additionally, biodistribution results revealed that GPP3 micelles could be remarkably taken up by the jejunum and ileum. Pharmacokinetics revealed that the maximum plasma concentration (C max ) and the area under the plasma concentration-time curve from 0 to 24 h (AUC 0–24 ) for CUR@GPP3 micelles were both significantly increased, and that the relative bioavailability of CUR@GPP3 micelles to CUR-loaded mPEG-PLA/TPGS micelles (CUR@PP micelles) was 258.8%. Furthermore, CUR-loaded micelles could reduce damage to the liver and intestinal tissues. This study highlights the importance of Gal content in the design of targeting nanocarrier Gal-modified micelles, which have broad prospects for oral delivery of hydrophobic drugs. Therefore, they could serve as a promising candidate for targeted delivery to the liver.
研究领域:
药剂学
·
生物医学工程
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DOI
高影响因子
Frontiers of Materials Science
·
2020
·Vol. 14
·期 2
·177-187
·
IF 1.747
Zhang Lan,Lin Zhaohua,Zhou Qiang,Ma Suqian,Liang Yunhong,Zhang Zhihui
Polylactic acid (PLA) is one of the most promising shape memory polymers with outstanding biocompatibility, while poly(ether ether ketone) (PEEK) is a special engineering plastic with excellent mechanical performance. In this work, PEEK was selected to modify PLA, and a series of PLA blended with different PEEK contents (PLA/PEEK blends) were obtained. The effects of PEEK on thermodynamic, mechanical and shape memory properties of PLA/PEEK blends were investigated. The results showed that the thermal stability of the PLA/PEEK blend was improved with the PEEK content increase. The tensile strength reached the highest value of 20.6 MPa when the PEEK content was 10%. While the best shape memory performance occurred with the PEEK content of 15%, the shape recovery time was less than 2 s, and the shape fixation/recovery ratio was more than 99%. Furthermore, the programmable mimetic flower opening process was achieved by using PLA/PEEK blends with different PEEK content ratios. The above results indicated that the blend of an appropriate proportion of PEEK had positive effects on mechanical and deformation performances of PLA.
研究领域:
材料科学
·
生物医学工程
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高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
·
2013
·Vol. 101
·期 8
·1359-1366
·
IF 2.308
Yu-fei Wang,Hong-feng Guo,Da-jun Ying
Dural closure after the neurosurgery can prevent postoperative complications. Although many types of dural substitute have been developed, most of them lack functional and structural characteristics compared with the natural dura mater. In this study, we used electrospinning method to fabricate a multilayer scaffold to promote dural repair. The inner layer of the scaffold that faces the brain tissue is composed of poly-lactic acid (PLA) to reduce tissue adhesion. The middle layer of the scaffold is composed of poly-ɛ-caprolactone and PLA, which provides a watertight seal. The outer layer of the scaffold contains a large amount of collagen to promote cell attachment and proliferation. The results from in vitro study and an animal model have shown that this multilayer fibrous scaffold has sufficient mechanic strength and biochemical properties to enhance dural repair. Therefore, fabrication of scaffold with multiple functional and structural layers may provide a novel approach for tissue engineering. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 101B: 1359–1366, 2013.
研究领域:
生物材料
·
神经外科
·
组织工程
·
再生医学
·
生物医学工程
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 39
·e71261
·
IF 3.1
Xin Ning,Xiaoyu Guo,Hongqiang Wang,Fang Liu,Lin Lv,Jiao Li
The treatment of high-temperature oily wastewater remains a critical challenge in environmental and industrial applications. In this study, a high-temperature-resistant, superhydrophobic Polycarbonate/Polylactic acid (PC/PLA) fiber membrane was fabricated via electrospinning for efficient oil–water separation at elevated temperatures. By optimizing the PC content in PLA, the fabricated fibers exhibited a silk-bead morphology, significantly enhancing the mechanical strength, thermal stability, and superhydrophobic properties of the PLA membrane. Experimental results demonstrate that the membrane exhibits exceptional separation performance for both oil–water mixtures and emulsions at 90°C, with separation efficiencies exceeding 99.5% and flux rates of 6800 L/(m 2 h) for oil–water mixtures and 750 L/(m 2 h) for emulsions. Moreover, the membrane maintains excellent superhydrophobicity (contact angle of 157.10°) and good mechanical properties (tensile strength of 3.45 MPa) even at temperatures up to 120°C. This study presents a novel and highly effective membrane material for high-temperature oil–water separation, offering significant potential for applications in wastewater treatment and various industrial processes.
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高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 26
·期 10
·4643
·
IF 4.9
Tingqiang Yan,Kang Chen,Xiaodong Wang,Yingjie Qiao
Polylactic acid (PLA) exhibits remarkable biocompatibility and biodegradability, rendering it a highly promising material for applications in packaging and disposable products. However, its inherent brittleness, low melt strength, and slow crystallization rate significantly restrict its practical uses. Our previous studies have shown that incorporating the ADR chain extender can yield chitosan–polylactic acid–ADR (CS/PLA-ADR) composites with outstanding antibacterial properties, enhanced biodegradability, and the capability to effectively block water vapor and oxygen. However, the low elongation at break (less than 10%) limits its application in scenarios that require high ductility. To enhance the toughness of the CS/PLA-ADR composites, the flexible biodegradable polybutylene succinate (PBS) is innovatively introduced. The mechanical properties of PBS can be compared with polyethylene and polypropylene, providing high strength and toughness. The mechanism of introducing PBS is to construct a good, toughened structure through the flexible structure of PBS in collaboration with ADR toughening agent, achieving a balance between strength and toughness in CS/PLA-ADR-PBS composites. The incorporation of PBS is anticipated to improve the ductility of CS/PLA-ADR composites. This study systematically investigates the effects of varying PBS content (0–30%) on the properties of CS/PLA-ADR-PBS composites, aiming to determine the optimal PBS content and elucidate the mechanism by which PBS enhances the overall performance of the composites. The results indicate that when the PBS content is 20%, the composites exhibit optimal overall properties. This research provides a theoretical foundation and technical support for the development of environmentally friendly and sustainable packaging materials, offering significant research value and broad application prospects.
研究领域:
材料科学
·
生物医学工程
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DOI
PubMed
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Yihan Liu,Xiaofeng Song,Shuna Jin,Ye Liu,Chang Gao
The development of biodegradable oil/water separation meshes with flame retardancy is a novel topic at present, carrying substantial implications for the application of biodegradable materials in membrane separation technology, because biodegradable matrix is beneficial to sustainable development and reduces environmental pollution after disposal. In this study, A functional filler (DBO) was synthesized using 3,5-bis(1,1-dimethylethyl)-2-hydroxy-benzaldehyde, 4,4′-diamino- diphenyl sulfone, and 9,10-dihydro-9-oxa-10- phosphate as raw materials via two-step chemical reaction, which has good solubility in various organic solvents. DBO is blended with polylactic acid (PLA) to make electrospun fiber meshes. When the blend ratio of DBO/PLA is 20 wt%, the water contact angle of fiber mesh reaches 150.6 ± 2.4°, while the limited oxygen index (LOI) and UL-94 test are 27.5 % and V-2 level, respectively. The fiber mesh demonstrates selective separation for alkane/water mixture, achieving permeation flux and separation efficiency of 3030 ± 157 L·m −2 ·h −1 and 99.2 ± 0.7 % for n-hexane/water, separately. It exhibits high stability and durability. After several rounds of alkane/water separation, the fiber mesh maintains the flame retardancy as confirmed by ignition tests. Additionally, the tensile strength and elongation at break of the fiber mesh surpassed those of PLA mesh, which are 1.44 ± 0.18 MPa and 54.83 ± 3.66 %, respectively. The integration of flame retardancy with superhydrophobicity into biodegradable polymers will open new avenues for advanced environmental engineering materials.
研究领域:
环境工程
·
材料科学
·
高分子科学
·
化学工程
·
纳米技术
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2024
·
IF 6.3
Wei Wang,Guangchao Ye,Xiujie Bian,Peng Lin,Dandan Wang,Xiang Wang
As a degradable polymer material, the regulation of the degradation rate of polylactide (PLA) under an actual light exposure environment is of significant importance for realizing its multifaceted applications. This study aims to enhance the photodegradation of PLA under irradiation with lower-energy wavelengths by using TiO 2 -based up-conversion nanoparticles (UCNPs). Two modification methods were employed: doping TiO 2 with Yb 3+ /Er 3+ /Tm 3+ ions integrated within the TiO 2 lattice, and creating a composite photocatalyst by adhering Y 2 O 3 : Yb 3+ /Er 3+ /Tm 3+ to the exterior of TiO 2 grains. The study investigated the impact of these two different TiO 2 -based UCNPs on the photocatalytic degradation rate and mechanism of PLA under simulated sunlight irradiation. Research has found that the doped TiO 2 , due to its narrower bandgap and higher photon utilization efficiency during the up-conversion process, exhibited superior catalytic efficiency in catalyzing the photodegradation reactions of PLA compared to unmodified TiO 2 and composite TiO 2 . This work proposes a novel strategy for preparing PLA composites with enhanced photodegradation speed provided by modified TiO 2 , efficient light energy utilization offered by the up-conversion process, and potential applications in more advanced packaging and agricultural fields.
研究领域:
材料科学
·
环境科学
·
光化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Wei Peng,Liting Wang,Mingyu Zhang,Deng-Guang Yu,Xiaoyan Li
Biodegradable conductive films are crucial for the sustainable development of wearable electronics. In this work, a flexible and degradable conductive film was prepared based on a carefully designed interface of polylactic acid (PLA) electrospun fibers and silver nanowires (AgNWs). The amphiphilic triblock copolymer was added to PLA solution for electrospinning, followed by solvent posttreatment to induce the hydrophilic block of the amphiphilic triblock copolymer to migrate to the fiber surface. Dopamine can be uniformly polymerized on the surface of hydrophilic PLA fibers, and the prepared PLA@PDA fiber film can form a good interface combination with AgNWs. The electrical conductivity of AgNWs/PLA@PDA flexible film can reach 258.5 S cm −1 , showing obvious Joule heating effect and good mechanical properties. Degradation experiments showed that in phosphate buffered saline , the PLA molecular chain showed a dynamic equilibrium due to the scission and rearrangement of the ester groups and degraded slowly, while AgNWs/PLA@PDA degraded rapidly under alkaline conditions. Our study provides a simple and controllable method to prepare flexible degradable electronic films, which is expected to be applied to flexible wearable bioelectrodes.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Kaimin Zhang,Danman Guo,Tianyi Tang,Xuankun Fang,Faxu Lin,Xiang Long,Fangfang Ke,Xiaoyu Ji,Nipeng Chen,Zhen Zhang,Huahua Huang,Zhenguo Chi,Zhiyong Yang
Recent advancements have focused on developing nanoscale persistent room-temperature phosphorescence (pRTP) structures to expand their applicability in biomedical fields. Traditional fabrication methods typically produce surface-coated core–shell pRTP nanoparticles composed of nonbiocompatible pRTP emitters at very high concentrations in the core. To overcome this limitation, polymeric pRTP nanosystems have been presented in this study as a promising alternative by embedding RTP molecules within the biocompatible polymer matrix, thereby significantly reducing the required concentration of RTP molecules. These polymer nanoparticles were fabricated using a biocompatible poly(lactic acid) (PLA) matrix by an effective microemulsion-based method. They exhibited similar pRTP properties to the traditional nanoparticles, showing comparable long-lasting phosphorescence with a lifetime of 118 ms even when the phosphorescent molecule content is below 2%. Moreover, the pRTP polymer nanoparticles with excellent biocompatibility and stability demonstrate interesting reversible photoactivated pRTP properties. They have been successfully applied for in vivo imaging with a high signal-to-noise ratio (SBR) of 2061, maintaining strong and long-lived phosphorescent emissions even for 20 min. These results highlight a viable approach to advancing the pRTP technology for biological applications.
研究领域:
材料科学
·
生物医学工程
·
影像学
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DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Tao Guo,Jiayuan Chen,Lan Luo,Qiangwang Geng,Linlin Wang,Fenghua Zhang,Narisu Hu,Yanju Liu,Jinsong Leng
Shape memory polymer (SMP) microspheres possess controllable physicochemical properties, internal cavities capable of loading drugs or nanoparticles, and inherent intelligence, making them suitable for various biomedical applications. In this research, we utilized tri-n-butyl citrate (TBC) to lower the glass transition temperature of shape memory polylactic acid (PLA) to approximate oral temperature. Following this, we introduced oleic acid-modified Fe 3 O 4 nanoparticles to confer magnetism to the material. Subsequently, SMP microspheres with a core–shell structure encapsulating Fe 3 O 4 particles were prepared using the emulsion-solvent evaporation method, and we carefully controlled their particle size and morphology to match the diameter of dentinal tubules. Our investigation focused on applying these magnetically guided microspheres, which exhibited excellent shape memory performance, for sealing dentinal tubules. These microspheres displayed the ability to move directionally under the influence of a magnetic field. As a result, they could be attracted into the interior of dentinal tubules in their temporary shape and then revert to their initial shape upon heating at 40 °C, thereby achieving the closure of dentinal tubules effectively. The microsphere entry rate during the tubule closure process was found to be 93.33 ± 2.82 %, with a corresponding sealing rate of 85.41 ± 7.11 %. The successful demonstration of magnetic-guided movement and the utilization of the shape memory function for dentinal tubule sealing significantly expand the potential applications of SMP microspheres in the field of biomedical science.
研究领域:
材料科学
·
口腔医学
·
生物医学工程
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高影响因子
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