Composites Part A: Applied Science and Manufacturing最新文献_第7页

Application of vitrimer-based sizing agent onto carbon fibres through thiol-ene photo-polymerisation 巯基光聚合树脂基施胶剂在碳纤维上的应用

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-08 DOI: 10.1016/j.compositesa.2025.109495

Yi Wang , Qixing Jiang , Dominik Vorlaufer , Alexander Bismarck , Jonny Blaker , Matthieu Gresil

{"title":"Application of vitrimer-based sizing agent onto carbon fibres through thiol-ene photo-polymerisation","authors":"Yi Wang , Qixing Jiang , Dominik Vorlaufer , Alexander Bismarck , Jonny Blaker , Matthieu Gresil","doi":"10.1016/j.compositesa.2025.109495","DOIUrl":"10.1016/j.compositesa.2025.109495","url":null,"abstract":"<div><div>This work introduces photocuring as a method to apply a vitrimer-based sizing agent onto carbon fibres (CFs) via a thiol–ene reaction. The vitrimer molecule, bisphenol A glycerolate di(norbornenyl ester) (BPAGDN), was synthesised as the sizing agent. Surface treatments including oxidation and silanisation were performed on unsized AS4 CFs to graft thiol groups onto the surface. Upon UV irradiation, norbornene groups on BPAGDN reacted with surface thiol groups through a photo-initiated thiol–ene reaction, coating the CFs with BPAGDN. IR spectroscopy confirmed the epoxy–acid reaction mechanism, with full conversion achieved after 14 h. The molecular structure of BPAGDN was verified by NMR. Surface treatments led to an oxygen content increase of 5.09 %, the appearance of sulphur (1.83 %), and an increase in O’-C=O bonding by 21.42 %, as determined by XPS. The vitrimer coating increased fibre diameter from 7.04 ± 0.06 µm to 7.72 ± 0.15 µm. Mechanical properties of sized CFs remained similar to unsized CFs, though with a 26.35 % decrease in Weibull modulus. The interfacial shear strength (IFSS) of 5-min vitrimer-sized CFs increased by 24.37 % (from 66.75 MPa to 83.01 MPa), due to enhanced fibre–matrix bonding. This work demonstrates a non-destructive vitrimer sizing method using BPAGDN and UV irradiation, yielding stronger fibre–matrix interfaces.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109495"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Screw extrusion-assisted additive manufacturing of high-strength 12K continuous carbon fiber-reinforced nylon composites 螺杆挤出辅助增材制造高强12K连续碳纤维增强尼龙复合材料

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-11-27 DOI: 10.1016/j.compositesa.2025.109472

Zhenyu Yang , Chenghuan Wu , Xingyu Wang , Zhonglue Hu , Wei Chen , Weiping Dong , Sisi Wang , Xiping Li

{"title":"Screw extrusion-assisted additive manufacturing of high-strength 12K continuous carbon fiber-reinforced nylon composites","authors":"Zhenyu Yang , Chenghuan Wu , Xingyu Wang , Zhonglue Hu , Wei Chen , Weiping Dong , Sisi Wang , Xiping Li","doi":"10.1016/j.compositesa.2025.109472","DOIUrl":"10.1016/j.compositesa.2025.109472","url":null,"abstract":"<div><div>The light-weight, high-strength continuous carbon fiber-reinforced thermoplastic composites (CCFRPs) are the ideal candidates for the high-performance structural materials. However, this superior material’s full potential is yet untapped, as the current filament-based additive manufacturing scheme has a limited impregnation capability, confining usable materials to narrow 1K/3K CCF tows. To bridge such gap, this study developed a screw extrusion-assisted in-situ impregnation and 3D printing system, enabling efficient fabrication of highly strong thermoplastic composites reinforced with 12K CCF tows. Microstructural characterization and mechanical testing reveal that the as-impregnated CCF tows exhibit exceptional mechanical properties, with a maximum tensile strength of 1063.7 MPa, an elastic modulus of 62.4 GPa, and a low internal porosity of 3.2 %. Through systematic optimization of the PA6 matrix composition and printing parameters, an optimal short carbon fiber (SCF) loading of 10 wt% was identified, enabling the 3D-printed composites to achieve a remarkable tensile strength of up to 804.2 MPa. This exceptional performance is attributed to the unique screw extrusion process, which facilitates efficient in-situ fiber impregnation and deposition, offering a promising, low-cost, and flexible pathway for manufacturing large, high-strength composite structures.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109472"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reinforcement learning for real-time control of Resin Transfer Molding: Bridging simulation and experiments 树脂传递成型实时控制的强化学习：桥接仿真与实验

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-19 DOI: 10.1016/j.compositesa.2025.109511

D. Mocerino , S. Fernández-León , J. Fernández-León , L. Baumela , C. González

{"title":"Reinforcement learning for real-time control of Resin Transfer Molding: Bridging simulation and experiments","authors":"D. Mocerino , S. Fernández-León , J. Fernández-León , L. Baumela , C. González","doi":"10.1016/j.compositesa.2025.109511","DOIUrl":"10.1016/j.compositesa.2025.109511","url":null,"abstract":"<div><div><em>Resin Transfer Moulding</em> (RTM) is an out-of-autoclave process widely employed for the production of high-performance composite components. Achieving uniform and defect-free impregnation, however, remains challenging due to uncertainties in resin viscosity, reinforcement permeability, and other process disturbances that influence flow dynamics. In this work, we present a physics-informed Reinforcement Learning (RL) framework for real-time control of the injection pressure in RTM. The approach integrates a custom Level Set–Darcy simulation environment with a Deep Q-Network (DQN) agent, trained to regulate the inlet pressure and maintain a target resin front velocity under varying material and process conditions. Unlike prior studies requiring full visual access to the flow front, the agent relies exclusively on feedback from four pressure sensors distributed along the mould, enhancing its applicability to industrial settings. The RL agent was initially trained <em>in silico</em> using stochastic permeability fields and viscosity variations derived from synthetic data, fostering robust and resilient control strategies. The learned policy was subsequently deployed on a laboratory-scale RTM setup for experimental validation. Results demonstrate that the RL controller successfully preserves the desired filling velocity, compensates for unanticipated variations in resin viscosity and fabric permeability, and accurately reproduces the intended impregnation dynamics. This study highlights the potential of closed-loop adaptive pressure control in RTM using Reinforcement Learning, illustrating its capability to handle process variability. The proposed framework can be further extended to more complex geometries, multi-gate injection systems, and other composite manufacturing processes.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109511"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy-based modeling and experimental study on the characteristics of CFRP hole-making by the hybrid of laser and gas-waterjet with different scanning modes 基于能量的激光-气-水混合扫描模式下CFRP制孔特性建模与实验研究

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-11 DOI: 10.1016/j.compositesa.2025.109498

Boshen Yu , Xu Zhang , Jingrun Cai , Di Wu , Yanzhao Ma , Deng Li

{"title":"Energy-based modeling and experimental study on the characteristics of CFRP hole-making by the hybrid of laser and gas-waterjet with different scanning modes","authors":"Boshen Yu , Xu Zhang , Jingrun Cai , Di Wu , Yanzhao Ma , Deng Li","doi":"10.1016/j.compositesa.2025.109498","DOIUrl":"10.1016/j.compositesa.2025.109498","url":null,"abstract":"<div><div>The hybrid of laser and gas-waterjet (HLGW) is an efficient method for processing microchannels and holes in CFRP laminates, but most existing studies have primarily focused on process parameter optimization. To improve the hole quality, this study investigated the effects of different scanning strategies, scanning speeds, and waterjet impact angles. Hole quality was evaluated by heat affected zone (HAZ) area, taper, micromorphology, and surface roughness. Furthermore, a predictive model for CFRP removal based on laser energy and waterjet kinetic energy was developed to provide a theoretical basis for understanding the HLGW mechanism. The results show that increasing the waterjet impact angle reduces the HAZ area at the hole entrance for both Concentric Scanning Mode (CSM) and Spiral Scanning Mode (SSM). The SSM-1 strategy results in the smallest HAZ area at both the hole entrance and exit. The surface roughness achieved with SSM is superior to that obtained with CSM, with R<sub>q</sub> and R<sub>z</sub> reduced by 10.69 % and 19.95 %, respectively. The SSM has a larger taper than the CSM, with a maximum increase of 22.16%. An inside-to-outside movement sequence effectively mitigates waterjet erosion on the hole sidewall. The surface produced by CSM contains significantly more micro-defects than that generated by the SSM. The SSM-1 scanning strategy provides the optimal hole sidewall quality.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109498"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ablation behavior of the high-silica/phenolic pyramidal lattice-reinforced silicone rubber composites 高硅/酚醛锥体晶格增强硅橡胶复合材料的烧蚀行为

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-11 DOI: 10.1016/j.compositesa.2025.109507

Peixin Yang , Te Ma , Wu Yuan , Hongwei Song

{"title":"Ablation behavior of the high-silica/phenolic pyramidal lattice-reinforced silicone rubber composites","authors":"Peixin Yang , Te Ma , Wu Yuan , Hongwei Song","doi":"10.1016/j.compositesa.2025.109507","DOIUrl":"10.1016/j.compositesa.2025.109507","url":null,"abstract":"<div><div>Lattice structures are promising for enhancing the thermo-mechanical performance of composites under extreme conditions. This study systematically investigated the ablation behavior of high-silica/phenolic pyramidal lattice-reinforced silicone rubber composites under an oxyacetylene flame. A novel vertical weaving method reduced lattice fabrication time by 67 %. Microstructural and compositional analyses revealed a gradient pyrolysis-carbonization mechanism, incorporated into a theoretical model. The developed voxel-based numerical model characterizes the effects of lattice topology and material parameters on ablation performance. The lattice provides three key reinforcement mechanisms including bidirectional thermal regulation through radial and thickness-direction heat transfer, structural integrity enhancement via char layer reinforcement, and multi-directional load resistance against aerodynamic stresses. Experimental results show that reducing the lattice relative density lowers backside temperature but increases mass loss. Parametric sensitivity analysis demonstrates that optimal lattice design with smaller rod diameters, lower inclination angles, and longer rods further enhances thermal protection. These findings provide crucial guidance for the multi-scale design and optimization of advanced thermal protection materials.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109507"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the flexural performance and damage process of 3D printed beams 3D打印梁的抗弯性能及损伤过程研究

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-15 DOI: 10.1016/j.compositesa.2025.109517

Siyuan Wu , Zhongde Shan , Ken Chen , Shaozong Wang , Congze Fan , Xiaojun Liu , Zhifeng Zhang , Jianxin Xiao

{"title":"Investigation of the flexural performance and damage process of 3D printed beams","authors":"Siyuan Wu , Zhongde Shan , Ken Chen , Shaozong Wang , Congze Fan , Xiaojun Liu , Zhifeng Zhang , Jianxin Xiao","doi":"10.1016/j.compositesa.2025.109517","DOIUrl":"10.1016/j.compositesa.2025.109517","url":null,"abstract":"<div><div>Short fiber reinforced resin beams (SFRRBs), continuous fiber reinforced resin beams (CFRRBs) and hybrid printing beam structures were produced using 3D printing, innovatively. The influence of printing speed and temperature on the flexural strength and modulus was examined and compared. Furthermore, the flexural damage process was examined by acoustic emission (AE) technology, and the feature signals were clustered utilizing principal component analysis(PCA)and the K-means++ algorithm. The results indicate that printing temperature and speed have a significant impact on the flexural performance, and when the printing temperature was set at 220°C and the printing speeds were 5 mm/s and 1.5 mm/s, the maximum flexural strength and modulus of SFRRBs reached 82.34 MPa and 4.07 GPa, respectively, while those of CFRRBs reached 235.12 MPa and 15.12 GPa; The flexural strength and modulus of the interlaminar hybrid printing beam structures could achieve 203.31 MPa and 18.91 GPa, with the maximum improvements by 18.20 % and 25.01 %, as the small layer short fiber reinforced resin establishes a more robust bonding interface and diminishes the overall porosity; The flexural damage of CFRRBs and SFRRBs was classified into five types. In comparison to 0 mm rib CFRRBs, 10 mm rib CFRRBs have a greater average energy and duration of AE signal; In comparison to 10 mm rib CFRRB, the average AE energy of 10 mm rib SFRRB is diminished, however, the average duration is extended. The research provides more feasibility for the application of 3D printing in the field of engineering.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109517"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing scaffold architecture to improve mycelium growth and performance in biodegradable composites 利用支架结构改善菌丝体生长和可生物降解复合材料的性能

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-01 DOI: 10.1016/j.compositesa.2025.109474

Deepak Sharma , Hortense Le Ferrand

{"title":"Harnessing scaffold architecture to improve mycelium growth and performance in biodegradable composites","authors":"Deepak Sharma , Hortense Le Ferrand","doi":"10.1016/j.compositesa.2025.109474","DOIUrl":"10.1016/j.compositesa.2025.109474","url":null,"abstract":"<div><div>Mycelium-bound composites (MBCs) are bio-based materials manufactured by growing fungal mycelium within organic substrates, serving as biodegradable and functional alternatives to conventional polymers and foams. Limited oxygen availability within thick, loosely packed organic substrates affects uniform mycelium growth, as oxygen diffusion decreases with thickness, resulting in low performance of the MBCs. Designing a porous organic scaffold as a substrate could help grow homogeneously dense mycelium throughout the composite by enabling adequate air flow. In this study, the mycelium of <em>Ganoderma lucidum</em> was grown on 3D-printed triply periodic minimal surface scaffolds made of a wood-polylactic acid (wood-PLA) composite, which were dip-coated with a thin layer of peptone-malt-agar (PMA) solution. The growth of the mycelium and the resulting yield strength and thermal insulation improvements of the scaffolds were studied for three sheet- and strut-triply periodic minimal surface (TPMS) porous scaffolds. At equal nominal porosity, the mycelium was found to grow much better on sheet-TPMS than on strut-TPMS scaffolds. The best sheet scaffold achieved a yield strength of 4.89 MPa, representing a 48.18 % improvement over the control scaffold (scaffold without PMA coating). Similarly, the best sheet scaffold exhibits a 43.1 % improvement in thermal insulation compared to control scaffolds after 21 days of growth. The MBCs effectively maintained an average low surface temperature of 65 °C under extreme thermal conditions (285 °C) and exhibited strong infrared shielding capabilities, highlighting their potential for thermal insulation and stealth applications. The current work demonstrates how scaffold design can tailor the growth of mycelium and opens a new avenue for increasing the strength and thermal insulation of wood-PLA composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109474"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-inspired gradient-heterogeneous Al/Al2O3 composites: Strength–toughness synergistic design and fracture mechanisms 仿生梯度非均相Al/Al2O3复合材料：强度-韧性协同设计和断裂机制

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-11-25 DOI: 10.1016/j.compositesa.2025.109467

Tian-Hao Xu , Xiang-Yu Meng , Song Shen , Guo-Chao Mo , Ping Shen

{"title":"Bio-inspired gradient-heterogeneous Al/Al2O3 composites: Strength–toughness synergistic design and fracture mechanisms","authors":"Tian-Hao Xu , Xiang-Yu Meng , Song Shen , Guo-Chao Mo , Ping Shen","doi":"10.1016/j.compositesa.2025.109467","DOIUrl":"10.1016/j.compositesa.2025.109467","url":null,"abstract":"<div><div>Inspired by natural hierarchical structures, this study presents a novel biomimetic Al/Al<sub>2</sub>O<sub>3</sub> composite featuring a gradient-heterogeneous architecture that effectively addresses the long-standing strength–toughness trade-off in metal–ceramic systems. A high-resolution vat photopolymerization 3D printing process was used to fabricate complex ceramic scaffolds with a multi-scale design, incorporating a turtle shell-inspired gradient in porosity and wall thickness, along with layered, tubular, and hexagonal cellular units derived respectively from nacre, ram horns, and beehives. Through pressure infiltration of molten aluminum, a fully interpenetrating composite with strong interfacial bonding was achieved. The resulting material exhibits a spatially tailored gradient in mechanical properties, achieving a surface strength of 634 MPa and a core energy absorption capacity of 14.36 MJ/cm<sup>3</sup>. In situ mechanical testing and finite element analysis reveal that multi-scale synergistic toughening mechanisms—including architecture-guided crack deflection, distributed plastic deformation, and stress redistribution—collectively contribute to the enhanced performance. This work demonstrates the potential of additive manufacturing-enabled structural programming to engineer composites with spatially optimized mechanical properties, offering a new paradigm for the design of advanced structural materials.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109467"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145623341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving bioactivity of poly(lactic acid) by incorporating pH-neutral bioactive glass 通过加入ph中性生物活性玻璃提高聚乳酸的生物活性

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-11-25 DOI: 10.1016/j.compositesa.2025.109466

Aamna Qamar , Jian Liu , Yankun Gong , Ailing Li , Dong Qiu

{"title":"Improving bioactivity of poly(lactic acid) by incorporating pH-neutral bioactive glass","authors":"Aamna Qamar , Jian Liu , Yankun Gong , Ailing Li , Dong Qiu","doi":"10.1016/j.compositesa.2025.109466","DOIUrl":"10.1016/j.compositesa.2025.109466","url":null,"abstract":"<div><div>Poly(lactic acid) (PLA) is a representative bioresorbable and biocompatible polyester, which has been used in many clinic applications, for examples, artificial bones and internal fixation screws; however, its inherent bio-inertness has limited the therapeutic outcomes. In this article, bioactive glasses (BGs) were incorporated into PLA via melt compounding to enhance its bioactivity. It was found that the high basicity of conventional BGs (45S5 as the representative) severely degraded PLA chains during thermal processing, causing obvious decrease in PLA composites mechanical properties. Instead, the pH-neutral BG, a phosphosilicate calcium glass (denoted as PSC, with the composition of 10.8 %P<sub>2</sub>O<sub>5</sub>-54.2 %SiO<sub>2</sub>-35.0 %CaO, mol%), showed no deterioration of PLA chains, in terms of molecular weight, etc., therefore retained the good mechanical property of PLA composites. The 10 % mPSC/PLA showed improved mechanical performance, with tensile strengths of 52.2 ± 2.8 MPa, compared to 44.2 ± 2.8 MPa of pure PLA. Furthermore, the composites exhibited enhanced bioactivity and biocompatibility, e.g., 10 % mPSC/PLA showed nearly 6 times improvement in cell adhesion (based on the cell spreading area) than pure PLA. This study highlights the importance of acid-base property on the compatibility between polyesters and inorganic fillers, and has identified PSC as a promising bioactive filler to develop better polyester-based biomedical materials.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109466"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and performance research of PDLC films with low haze and high UV resistance 低雾度高抗紫外线PDLC薄膜的制备及性能研究

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2026-03-01 Epub Date: 2025-12-15 DOI: 10.1016/j.compositesa.2025.109516

Jianjun Xu

{"title":"Preparation and performance research of PDLC films with low haze and high UV resistance","authors":"Jianjun Xu","doi":"10.1016/j.compositesa.2025.109516","DOIUrl":"10.1016/j.compositesa.2025.109516","url":null,"abstract":"<div><div>In this paper, a low haze and high stability polymer dispersed liquid crystal (PDLC) film was prepared by using a new type of fully hydrogenated styrene-butadiene copolymer (HSBC) as the substrate. The results show that, by replacing the traditional commercial PET film with HSBC film, the on-state haze of the PDLC film prepared is reduced by 36 %, and the on-state transmittance is increased by 4 %. After 800 cycles of switching off, the electro-optical performance changes minimally, and simultaneously, PDLC films showed high stability, with no significant changes in light transmittance before and after 200 h of irradiation in the UV aging box. When the acrylate crosslinking agent with moderate chain length (PEGDA400) is used, the prepared films have excellent electro-optic and temperature domain comprehensive properties, with a fast decay time of 4.8 s at −30℃ and a high contrast ratio of 38 at 100 ℃, and this film has a good viewing angle and cycling stability. By using HSBC film instead of PET film, it has a reference significance for further improving the comprehensive performance of PDLC.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"202 ","pages":"Article 109516"},"PeriodicalIF":8.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0