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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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Wei Juene Chong,Shirley Shen,Yuncang Li,Adrian Trinchi,Dejana Pejak,Ilias (Louis) Kyratzis,Antonella Sola,Cuie Wen
Polymeric biomaterials such as polylactic acid (PLA) play a prominent role in the advancement of biomedical additive manufacturing (AM). PLA offers indeed a very advantageous combination of thermo-mechanical properties and functional attributes, as it is biobased, biodegradable, biocompatible and easy to print. However, PLA can be damaged by common sterilization methods and is sensitive to most chemical disinfectants, and this may impair its widespread usage. One of the most promising ways to overcome this shortcoming is to provide PLA with embedded antibacterial activity by the addition of appropriate fillers such as zinc oxide (ZnO) nanoparticles. After a detailed introduction to the basic properties of PLA and ZnO nanoparticles , the present review analyzes the main variables that govern the antibacterial activity of PLA-ZnO nanocomposites. Current applications and related manufacturing processes are also presented to showcase the importance of having embedded antibacterial functions in demanding applications such as food packaging and wound dressing. Emphasis is then placed on the emerging literature of the AM of PLA-ZnO nanocomposites, with a focus on fused filament fabrication (also known as fused deposition modeling). Existing gaps and hurdles related to the development and 3D printing of such composites is critically discussed. It is envisioned that a deeper understanding of the processability, thermo-mechanical behavior, biocompatibility and antibacterial efficacy of additively manufactured PLA-ZnO nanocomposites will foster their adoption in the biomedical field and, ultimately, in all circumstances where it is crucial to limit infection transmission.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 4
·952
·
IF 5
Qing Zhang,Yongguang Gao,Baojing Luo,Yan Cui,Shili Shu,Wei Chen,Lei Wang
Poly(butylene succinate-butylene terephthalate) (PBST) and polylactic acid (PLA) are both biodegradable polymeric materials. PBST has good ductility but low strength, while PLA exhibits high strength but poor toughness. Based on the complementary mechanical properties of the two polymers, PBST/PLA blends were prepared by melt blending in the mixing chamber of a torque rheometer using styrene-maleic anhydride copolymer (PSMA) as a compatibilizer. The effects of different contents of PSMA on the crystalline properties, thermal properties, mechanical properties, rheological behavior, and morphology of PBST/PLA blends were investigated. The results showed that the addition of PSMA improved the compatibility between PBST and PLA. When the amount of PSMA is 3–4 wt%, the comprehensive mechanical properties of the blends are optimal, and the tensile strength was increased by 61.7% compared with the binary blend without PSMA. Additionally, rheological tests illustrated that the blends exhibited a typical shear-thinning behavior and belonged to pseudoplastic non-Newtonian fluids.Keywords:poly(butylene succinate-butylene terephthalate);polylactic acid;styrene-maleic anhydride copolymer;blends
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Liya Fan,Wenxiang Wang,Xiaoyan Zhao
Poly (p-dioxane) (PPDO) as an absorbable suture exhibits good flexibility and tensile strength. Loading drugs through the immersion method will accelerate the hydrolysis of PPDO and affect its mechanical properties. In order to improve the drug loading performance of the PPDO suture and maintain its excellent mechanical stability, biodegradable material polylactic acid (PLA) was selected as the coating layer. The PLA fiber membrane with a porous structure was prepared by electrospinning, and nanosilver particles (Ag NPs) were loaded onto the membrane by in situ reaction. Subsequently, PLA@Ag and PPDO fibers were woven together to form PLA@Ag/PPDO composite yarn. The sustained-release ability, mechanical property, antibacterial, and cytotoxicity of the composite wire were further investigated. The results showed that the equilibrium release of Ag NPs from PLA@Ag/PPDO in phosphate buffer saline (PBS) was 0.84 mg/g, and the release equilibrium time was 8 h. The knotting strength of the composite wire increased by 17.8% compared to PPDO without a coating layer. Woven sutures presented significant antibacterial effects against S. aureus . The biocompatibility evaluation of human immortalized keratinocytes (HaCaT) demonstrated its safety in use. This work provides an effective technical method for the preparation of mechanically stable and functionalized absorbable sutures.
研究领域:
生物材料
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生物医学工程
·
高分子科学
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纳米技术
·
药剂学
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产品关联
DOI
高影响因子
CELLULOSE
·
2017
·Vol. 24
·期 11
·4831-4844
·
IF 3.417
Chen Yufei,Geng Biyao,Ru Jing,Tong Congcong,Liu Hongzhi,Chen Jinzhou
Bamboo, softwood, and hardwood pulp fibers were used as starting materials to prepare TEMPO-oxidized nanofibrillated cellulose (TO-NFC) dispersions. The resulting TO-NFC dispersions were then used to fabricate cellulose nanopapers and to coat poly(lactic acid) (PLA) films. The chemical and morphological characteristics of the dispersions together with the physical properties of the resultant nanopaper and PLA films were systematically compared. The maximum degree of oxidation was achieved for the bamboo pulp fiber. Transmission electron microscopy micrographs revealed that the oxidized pulp fibers were successfully disintegrated into cellulose nanofibrils with an average width of 5–6 nm. However, bamboo-derived TO-NFC was more densely entangled and crimped, with a heterogeneous distribution in width. It was further revealed that morphologies of the obtained TO-NFC may arise from the organizational structure of microfibrils in the cellulose fibers rather than the presence of hemicelluloses or the pulping process. The PLA films coated with a thin layer of TO-NFC from the bamboo pulp exhibited the highest oxygen-barrier property, which was even slightly higher than commercial ethylene–vinyl alcohol copolymer film, known for its high oxygen-barrier functionality.
研究领域:
材料科学
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林业工程
·
高分子化学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 42
·19494-19503
·
IF 3.3
Mengfei Zhang,Yang Wang,Jing Huang,Dong Wang,Ting Li,Shibo Wang,Weifu Dong
White pollution substantially impairs people's quality of life nowadays. Bio-based polymers that are environmentally friendly and biodegradable have garnered interest. Among them, polylactic acid (PLA) has attracted wide attention due to its excellent biodegradability, high transparency, and easy processing. However, its inherent flammability, low toughness, and poor compatibility with flame retardants severely limit its application scope. In this paper, a phytic acid-based flame retardant glycidyl methacrylate phytate (GPA) was prepared by epoxy ring-opening and phosphate transesterification. GPA was grafted onto PLA through free radical polymerization, and the introduction of GPA improved both the mechanical properties and flame retardancy of PLA. The LOI of PLA composite rose to 28% after adding a 6 wt% GPA. A reduction of 11.7% in the total heat release of the PLA-GPAX was observed in comparison to neat PLA, demonstrating that the prepared PLA composite exhibits high flame retardancy. Due to the improved dispersion and compatibility of GPA in the matrix after grafting onto PLA, the mechanical strength of PLA increased by 19.9%. This study provides a feasible method for improving the compatibility between flame retardants and bio-based polymers, achieving a mutually beneficial situation in flame retardancy and mechanical strength, and further expanding the application range of bio-based materials.
研究领域:
材料科学
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环境科学
·
高分子化学
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DOI
高影响因子
Journal of Natural Fibers
·
2022
·
IF 3.507
R. K. Gond,M. K. Gupta
The non-biodegradability of the packaging materials made from plastic causes harmful effects on the environment and human health. Nanocellulose, starch, chitosan in native and modified forms derived from natural resources can be potential reinforcements for the packaging materials. Nanocellulose from sugarcane bagasse was obtained through a combination of chemical treatments and mechanical grinding process and then incorporated in different amounts to poly lactic acid (PLA) to prepare nanocomposite films by the solvent casting method. The prepared films were characterized by X-ray diffraction (×RD), Fourier-Transform infra-red spectroscopy (FTIR), Atomic force microscopy (AFM), penetration resistance, optical and barrier properties. The incorporation of nanocellulose significantly influenced the crystallinity and barrier properties of the films. Enhancement in the hydrophobic nature and penetration resistance was also seen for the PLA-based nanocomposite films. The experimental results proved that the present films can be utilized in food packaging and other packaging applications as well.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
POLYMER BULLETIN
·
2024
·Vol. 81
·期 13
·11421-11457
·
IF 3.1
Shekhar Navin,Mondal Abhijit
Polylactic acid (PLA), a highly promising biodegradable biopolymer, has been extensively studied over the last two decades. The thermoplastic polyester PLA is bio-based, compostable, and eco-friendly. Its monomer, lactic acid, is fermented from renewable plant sources like starch and sugar. Therefore, PLA is regarded as a desirable substitute for conventional petroleum-based polymers. Because of its biocompatible and biodegradable properties, U.S. FDA (Food and Drug Administration) has approved PLA as a biomedical material. PLA has excellent mechanical, physical, structural, and thermal properties, making it suitable for various applications. However, PLA has limitations such as low impact toughness, hydrophobicity, and slow degradation rate at ambient temperatures. This can be improved by different modification methods, such as copolymerization, making composites or blends of PLA with other biodegradable polymers, or incorporating additives. This review presents information about the various methods of synthesis of PLA, its properties, and the environmental degradation of PLA. In addition, the different processing techniques of PLA are also reviewed. Lastly, the applications of PLA in sectors such as packaging, biomedical, agricultural, automotive, and textile are also discussed. Graphical Abstract
研究领域:
材料科学
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环境科学
·
生物医学工程
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DOI
高影响因子
JOURNAL OF BIOMATERIALS APPLICATIONS
·
2023
·
IF 2.9
Yanghao Wang,Haohan Li,Cuicui Zhao,Qihan Zi,Fei He,Weizhou Wang
A major obstacle to bone tissue repair is the difficulty in establishing a rapid blood supply areas of bone defects. Vascular endothelial growth factor (VEGF)-infused tissue-engineered scaffolds offer a possible therapeutic option for these types of injuries. Their role is to accelerate angiogenesis and improve bone healing. In this study, we used electrostatic spinning and biofactor binding to construct polylactic acid (PLA)/hydroxyapatite (HA)-VEGF scaffold materials and clarify their pro-vascular role in bone defect areas for efficient bone defect repair. PLA/HA nanocomposite fibrous membranes were manufactured by selecting suitable electrostatic spinning parameters. Heparin and VEGF were bound sequentially, and then the VEGF binding and release curves of the fiber membranes were calculated. A rat cranial defect model was constructed, and PLA/HA fiber membranes bound with VEGF and unbound with VEGF were placed for treatment. Finally, we compared bone volume recovery and vascular recovery in different fibrous membrane sites. A VEGF concentration of 2.5 µg/mL achieved the maximum binding and uniform distribution of PLA/HA fibrous membranes. Extended-release experiments showed that VEGF release essentially peaked at 14 days. In vivo studies showed that PLA/HA fibrous membranes bound with VEGF significantly increased the number of vessels at the site of cranial defects, bone mineral density, bone mineral content, bone bulk density, trabecular separation, trabecular thickness, and the number of trabeculae at the site of defects in rats compared with PLA/HA fibrous membranes not bound with VEGF. VEGF-bound PLA/HA fibrous membranes demonstrate the slow release of VEGF. The VEGF binding process does not disrupt the morphology and structure of the fibrous membranes. The fibrous membranes could stimulate both osteogenesis and angiogenesis. Taken together, this research provides a new strategy for critical-sized bone defects repairing.
研究领域:
组织工程
·
生物医学材料
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再生医学
·
骨科
·
生物材料科学
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DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2024
·
IF 2.7
Yifei Gao,Xiangyu Ma,Mengjiao Zhang,Hao Xu,Pei Xu,Yunsheng Ding
Sandwich structured polylactic acid (PLA) fabrics with high electromagnetic interference shielding and low reflection characteristics were prepared using a simple dip coating and spraying method. The middle layer of the sandwich-structured coatings was uniformly dispersed with highly conductive MXene fillers, while the surface of the layered MXene was modified by CTAB and loaded with magnetic Fe 3 O 4 fillers through electrostatic assembly, which was then uniformly dispersed into waterborne polyurethane as the outer layer. MXene@Fe 3 O 4 improves the impedance matching in the outer layer, so that the fabric has high-efficiency magnetic loss and dielectric loss. The obtained 10-1M3F/MXene/10-1M3F fabric exhibited a high average EMI shielding efficiency of 62.8 dB and a low reflection coefficient (R) of 0.34 in the X-band frequency range, wihch has a high application prospect in next-generation wearable smart electronic devices.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Zhixiu Liu,Junjie Wang,Haili Wang,Xiaoyu Dong,Jinghua Du,Sheng Cheng,Yunsheng Ding
High performance and environmentally friendly films for food packaging play an important role in improving food safety and protecting the environment after discarding. In this paper, bio-based polycarbonate diol (PCDL), isophorone diisocyanate (IPDI), isophorone diamine (IPDA), N -methyldiethanolamine (MDEA) and 1,6-dibromohexane were employed as main raw materials to prepare a series of polyurethanes with quaternary ammonium groups (QPUs). Subsequently, a bio-based coated film named as PLA-QPU was prepared by uniformly bar-coating the polyurethane slurry onto one surface of the PLA film. The mechanical testing results exhibit that PLA-QPU film has high tensile strength (63 MPa) and toughness (196 MJ/m 3 ), and the PLA-QPU film is more stretchable with elongation at break increasing from 7 % to 47 % in comparing with uncoated PLA film. The antimicrobial testing results show that the antimicrobial ratio of the QPU film against E. coli and S. aureus was 91 % and 88 %, respectively . The water vapor barrier properties testing results reveal that PLA-QPU coated film has a significant water vapor barrier property (57.8 g/m 2 ·day). The PLA-QPU coated film was evaluated for packaging cherry tomatoes and it maintained fruit freshness, texture, and visual quality effectively for up to 16 days. Therefore, the high-performance PLA-QPU coated film shows great promise as sustainable in food preservation.
研究领域:
食品科学
·
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Sustainable Chemistry and Pharmacy
·
2026
·
IF 6.7
Tianyang Li,Keting Li,Chengjian Yao,Tao Zhao
Developing sustainable coloration routes for poly(lactic acid) (PLA) fabrics requires the simultaneous achievement of efficient dye transfer, reduced thermal demand, and recyclable processing media. Herein, a water-tuned reusable hydrophobic natural deep eutectic solvent (HNaDES) medium was constructed from thymol and menthol for carrier-free coloration of PLA fabrics with Disperse Blue 60 (B60). The HNaDES/water system functioned as a tunable dye-carrying medium rather than a conventional dyeing auxiliary, in which water regulated dye solvation, dye release, solvent–fiber interaction, and dye–PLA affinity. By optimizing the water content, HNaDES-40W achieved a K/S value of 10.17 with 87.7% color retention after reduction clearing at 110 °C. More importantly, efficient coloration was realized at 90 °C, giving a K/S value of 8.53, higher than that of conventional aqueous dyeing even at 110 °C. Density functional theory and molecular dynamics simulations revealed that moderate water addition loosened the HNaDES hydrogen-bonding network, moderated excessive solvent–fiber interaction, and established a favorable balance between B60 mobility and dye–PLA affinity. The dyed fabrics retained stable morphology, chemical structure, thermal behavior, crystalline features, and practical usability. Moreover, the HNaDES-rich phase was recovered through water-induced phase separation and maintained 95.4% of the first-cycle K/S value after five reuse cycles. This work demonstrates a reusable HNaDES medium for sustainable PLA coloration and provides a solvent-regulation strategy for more resource-efficient textile wet processing.
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DOI
高影响因子
危险品化学品经营许可证（带存储）