Polymer Testing最新文献_第2页

Influence of printing configuration on the resulting topology and antibacterial effectiveness of PVDF-graphene composites 打印构型对pvdf -石墨烯复合材料拓扑结构和抗菌效果的影响

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-13 DOI: 10.1016/j.polymertesting.2025.108895

Antrea Spanou , Karin Hjort , Ken Welch , Dan I. Andersson , Cecilia Persson

{"title":"Influence of printing configuration on the resulting topology and antibacterial effectiveness of PVDF-graphene composites","authors":"Antrea Spanou , Karin Hjort , Ken Welch , Dan I. Andersson , Cecilia Persson","doi":"10.1016/j.polymertesting.2025.108895","DOIUrl":"10.1016/j.polymertesting.2025.108895","url":null,"abstract":"<div><div>Inherently antibacterial materials could be an effective method to reduce the spread and impact of bacterial infections when incorporated into healthcare settings. The aim of this study was to examine whether additively manufactured PVDF-graphene nanoplatelet composites could confer antibacterial effects. The composites and reference filaments were produced with thermal compounding extrusion, which is a scalable method commonly used in industry, and were successfully printed using fused filament fabrication. The composites reduced bacterial attachment by 21 % and 81 % within the first hour of exposure for <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> respectively, when graphene flakes were exposed on the surface of the samples. <em>E. coli</em> strains were also examined for biofilm formation on the developed materials, but no additional antibacterial effect was seen, most likely because of the limited exposure of the graphene nanoplatelets on the surface of the samples. It was found that the surface topology resulting from different printing configurations, as well as the exposure time to bacteria had a significant influence on the biological response to the samples.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108895"},"PeriodicalIF":5.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306913","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

Modeling and application of temperature-dependent elastic constants in continuous fiber-reinforced shape memory polymer composites 连续纤维增强形状记忆聚合物复合材料中温度相关弹性常数的建模与应用

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-11 DOI: 10.1016/j.polymertesting.2025.108882

Jiajun Chen, Chen Du, Wenwu Zhang, Penghui Zhu, Qinghu Wang, Xiongqi Peng

{"title":"Modeling and application of temperature-dependent elastic constants in continuous fiber-reinforced shape memory polymer composites","authors":"Jiajun Chen, Chen Du, Wenwu Zhang, Penghui Zhu, Qinghu Wang, Xiongqi Peng","doi":"10.1016/j.polymertesting.2025.108882","DOIUrl":"10.1016/j.polymertesting.2025.108882","url":null,"abstract":"<div><div>The mechanical properties of continuous fiber-reinforced shape memory polymer composites (SMPCs) exhibit a pronounced temperature dependence. However, exiting models for elastic constants are not specifically developed for SMPCs. In this study, analytical models based on a revised Eshelby's inclusion theory are developed to predict the temperature-dependent longitudinal, transverse, and flexural moduli of SMPCs. Experimental data from the literature, covering SMPCs with various fiber volume fractions (4.32 %, 6.36 % and 12.97 %), are used to validate the proposed models. Validation results show high predictive accuracy for flexural modulus across all fiber content systems, while predictions for longitudinal and transverse moduli exhibit limitations at the high fiber contents (12.97 %). To overcome these constraints, a refined Rule of Mixtures for longitudinal modulus and a revised Chamis model for transverse modulus are introduced. Further numerical investigations on several classic micromechanical models reveal that the revised Chamis formulation effectively captures the temperature-dependent evolution of shear modulus. Furthermore, by incorporating the concept of storage strain, these analytical models are implemented into the commercial finite element software ABAQUS via the UMAT subroutine, enabling finite element simulation of SMPC shape memory cycles. The recovery stress under different constraining strain is also numerically investigated. Overall, the results demonstrate the developed model's capability to predict the temperature-dependent elastic constants and shape memory behavior of SMPCs. This framework bridges critical gaps between micromechanical theory and macroscale SMPC performance, providing a robust tool for multi-physics-coupled smart structure design.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108882"},"PeriodicalIF":5.0,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279540","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

Sensitivity analysis of process parameters on the properties of carbon fiber reinforced polyether-ether-ketone composites in screw extrusion 3D printing 工艺参数对碳纤维增强聚醚醚酮复合材料螺杆挤压3D打印性能的敏感性分析

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-11 DOI: 10.1016/j.polymertesting.2025.108884

Siwei Lu , Beining Zhang , Yunze Wang , Jincang Bai , Chuncheng Yang , Changning Sun , Dichen Li

{"title":"Sensitivity analysis of process parameters on the properties of carbon fiber reinforced polyether-ether-ketone composites in screw extrusion 3D printing","authors":"Siwei Lu , Beining Zhang , Yunze Wang , Jincang Bai , Chuncheng Yang , Changning Sun , Dichen Li","doi":"10.1016/j.polymertesting.2025.108884","DOIUrl":"10.1016/j.polymertesting.2025.108884","url":null,"abstract":"<div><div>Material extrusion based on screw extrusion has garnered increasing attention due to its extensive material processing capabilities and high compatibility. However, the relationship between the process parameters in screw extrusion and the properties of the parts requires further investigation. The study aims to investigate the sensitivity of the mechanical properties of short carbon fiber-reinforced polyether-ether-ketone (SCF/PEEK) printed parts to the process parameters in screw extrusion 3D printing. The effects of varying process parameters on the mechanical properties of the parts were investigated through a combination of numerical simulation and experimental testing. The results indicate that extrusion temperature, speed, and nozzle diameter significantly influence the melt extrusion pressure during the extrusion process. Regarding part strength, the most influential parameters were printing temperature and annealing temperature, followed by filling angle, nozzle diameter, printing layer height, and printing line width, while printing speed and annealing time had relatively minor effects on strength. Under the optimized process parameters, the maximum tensile and flexural strengths of the specimens reached 148.8 MPa and 222.1 MPa, respectively. The process parameters affect the mechanical properties and surface morphology of the specimen by influencing the inter- or intra-layer bonding, porosity, and crystallinity. This research offers a crucial theoretical foundation and practical guidance for enhancing the performance of screw-extruded 3D-printed parts, facilitating further applications in this field.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108884"},"PeriodicalIF":5.0,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144290486","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 mesophilic anaerobic digestion of compostable packaging through efficient and versatile thermo-alkaline pre-treatment 通过高效和通用的热碱性预处理，改善可堆肥包装的中温厌氧消化

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-11 DOI: 10.1016/j.polymertesting.2025.108896

Gaël Huet , Julie Lamarque , Florian Monlau , Valentin Puchelle , Cecilia Sambusiti , Juliana Catalina Suarez Murcia , Sandra Domenek , Florian Pion , Emmanuelle Gastaldi

{"title":"Improving mesophilic anaerobic digestion of compostable packaging through efficient and versatile thermo-alkaline pre-treatment","authors":"Gaël Huet , Julie Lamarque , Florian Monlau , Valentin Puchelle , Cecilia Sambusiti , Juliana Catalina Suarez Murcia , Sandra Domenek , Florian Pion , Emmanuelle Gastaldi","doi":"10.1016/j.polymertesting.2025.108896","DOIUrl":"10.1016/j.polymertesting.2025.108896","url":null,"abstract":"<div><div>In the current European regulatory context, which requires its Member States to collect biowaste separately with a view to its organic recovery, the co-processing of compostable food packaging with biowaste by mesophilic anaerobic digestion (AD) offers the dual opportunity of promoting its conversion into biogas while reducing plastic contamination of the environment. However, most packaging items on the market - particularly those made from poly(butylene adipate-co-terephthalate) (PBAT), polylactic acid (PLA) and polybutylene succinate (PBS) - show poor biodegradability under mesophilic AD conditions. To overcome this limitation, thermo-alkaline pre-treatments conditions were carried out to hydrolyze the most resistant polymers and improve their digestibility during AD. As PBAT is the most recalcitrant, the pre-treatment conditions were first optimized using pure PBAT, before extending the application to various compostable commercial items, including bags and coffee capsules. Optimal pre-treatment conditions (3 M KOH at 70 °C for 4 h) allowed for the effective solubilization of all the items tested. As a result, Biochemical Methane Potentials (BMP) were significantly increased with improvements ranging from 2 to 3 times for bags and 1.4 to 17 times for coffee capsules, even though they contained PBAT, PLA or PBS. By sufficiently reducing the molecular weight of recalcitrant polymers so that they can be assimilated by microorganisms, this pre-treatment has demonstrated its ability to enable their biodegradation in mesophilic AD. This versatile and universal pre-treatment approach offers a promising solution recovering biowaste with compostable packaging by converting them into methane while improving the quality of AD digestates.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108896"},"PeriodicalIF":5.0,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330924","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

Enhancing shock wave energy dissipation in metallosupramolecular polymer by tuning metal-imidazole coordination interactions 调节金属-咪唑配位相互作用增强金属超分子聚合物中激波能量耗散

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-11 DOI: 10.1016/j.polymertesting.2025.108885

Seungrae Cho , Hyemi Lee , Sieun Je , Juho Lee , Suwon Bae , Tae Ann Kim , Jaejun Lee

{"title":"Enhancing shock wave energy dissipation in metallosupramolecular polymer by tuning metal-imidazole coordination interactions","authors":"Seungrae Cho , Hyemi Lee , Sieun Je , Juho Lee , Suwon Bae , Tae Ann Kim , Jaejun Lee","doi":"10.1016/j.polymertesting.2025.108885","DOIUrl":"10.1016/j.polymertesting.2025.108885","url":null,"abstract":"<div><div>The development of materials capable of shock wave energy dissipation (SWED) is critical for modern protective applications. In this study, metallosupramolecular poly(dimethylsiloxane) (PDMS) networks cross-linked with Zn<sup>2+</sup>, Cu<sup>2+</sup>, and Ni<sup>2+</sup> ions and imidazole ligands were designed to enhance SWED by leveraging the dynamic nature of metal-ligand coordination bonds. A laser-induced shock wave technique revealed that Cu<sup>2+</sup> cross-linked PDMS exhibited superior SWED performance, likely due to coordination rearrangement dynamics occurring within a relevant timescale for shock wave dissipation. Time-temperature superposition (TTS) analysis indicated that while associative ligand exchange may assist in shock attenuation, metal-ligand bond dissociation plays a more dominant role under extreme shock conditions. DFT calculations further demonstrated that coordination geometry significantly influences SWED performance, with Cu<sup>2+</sup> in square planar (trans) coordination exhibiting greater rupture susceptibility. These findings highlight the tunability of metal-ligand interactions as an effective strategy for optimizing energy dissipation in metallosupramolecular polymers. Additionally, they provide a comprehensive SWED mechanism analysis by synergistically integrating a laser-induced shock wave test and DFT calculations.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108885"},"PeriodicalIF":5.0,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313050","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

Synergistic reinforcement of PVA films with boric acid and nano-silica for high-barrier food packaging 高阻隔食品包装用硼酸和纳米二氧化硅协同增强PVA薄膜

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-10 DOI: 10.1016/j.polymertesting.2025.108886

Xinyu Xu , Siqi Xie , Baoying Shi , Di Wu , Yu Lin , Qiaohui Zhi , Yufeng Wang , Haiyan Song

{"title":"Synergistic reinforcement of PVA films with boric acid and nano-silica for high-barrier food packaging","authors":"Xinyu Xu , Siqi Xie , Baoying Shi , Di Wu , Yu Lin , Qiaohui Zhi , Yufeng Wang , Haiyan Song","doi":"10.1016/j.polymertesting.2025.108886","DOIUrl":"10.1016/j.polymertesting.2025.108886","url":null,"abstract":"<div><div>The increasing environmental crisis caused by the extensive use of disposable plastics highlights the pressing demand for sustainable options. This research investigates an innovative method for enhancing the traits of polyvinyl alcohol (PVA) through the addition of boric acid (BA) as a crosslinking agent, along with γ-aminopropyl triethoxysilane modified nano-silica (NS) to refine the polymer matrix. The research focuses on the PVA/BA/NS composite film, examining its chemical structure, surface morphology, thermal stability, mechanical strength, gas barrier properties, surface wettability and UV-blocking ability. The results demonstrate that the overall performance of the composite film is significantly enhanced through the synergistic effects of boric acid (BA) and NS, achieved via crosslinking, nanofiller reinforcement, and structural optimization. The PVA/BA/NS composite films shown notable improvements in oxygen, water vapor barrier qualities, and mechanical strength. Furthermore, the addition of nano-silica greatly improved the films' surface hydrophobic qualities, improving their suitability for food packaging. Notably, the tensile resistance of the composite film improved by about 60 % relative to the PVA film, exceeding the findings of comparable research. Additionally, oxygen barrier performance improved by approximately 68 %, highlighting a significant enhancement. Furthermore, it was noteworthy that UV-blocking ability of the composite film had also been markedly enhanced. These improvements are essential for developing food packaging materials that offer better protection and longer shelf life for perishable products, while maintaining quality and safety for consumers. The results convincingly indicate that the environmentally friendly composite films created in this research possess considerable promise for use in food packaging applications.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108886"},"PeriodicalIF":5.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279539","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

Impact of single and combined space environment factors on the performance of elastomer micropatterned dry adhesives 空间环境因素对弹性体微纹干胶性能的影响

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-10 DOI: 10.1016/j.polymertesting.2025.108866

L. Ziemer , M.F. Garzke , A. Hand , M.K. Ben-Larbi , E. Stoll , A.P. Tighe

{"title":"Impact of single and combined space environment factors on the performance of elastomer micropatterned dry adhesives","authors":"L. Ziemer , M.F. Garzke , A. Hand , M.K. Ben-Larbi , E. Stoll , A.P. Tighe","doi":"10.1016/j.polymertesting.2025.108866","DOIUrl":"10.1016/j.polymertesting.2025.108866","url":null,"abstract":"<div><div>This study explores the effects of environmental factors in space on micropatterned dry adhesives (MDA) made from polyurethane (PUR) and polydimethylsiloxane (PDMS), inspired by the adhesion of gecko feet. These adhesives are promising for automated docking and debris capture in low Earth orbit (LEO). The research simulated a one-year exposure to thermal vacuum (TVAC), ultraviolet (UV) radiation, and atomic oxygen (ATOX) in a 500km, sun-synchronous orbit. Subsequent adhesion tests revealed that PDMS-based samples retain moderate adhesion under UV and TVAC but degrade significantly with ATOX as a result of silicon oxide formation. PUR-based samples lose most of their adhesion after exposure to ATOX and suffer near-total adhesion loss after exposure to UV rays due to photooxidation. Interestingly, PDMS samples subjected first to UV and then to ATOX show improved adhesion, presumably due to ATOX eroding damaged material and exposing pristine PDMS. In addition to yellowing, scanning electron microscopy analysis shows further morphological changes in MDA structure such as roughening and cracking in MDA pillars that contribute to adhesion loss. Larger 400µm-microstructures showed better resilience than the finer 50µm-microstructures. These findings suggest that PDMS-based MDA with larger structural features may be viable for LEO missions with limited shielding, whereas PUR-based MDA would require robust UV protection. Further direct in-space tests are recommended to assess long-term MDA performance under realistic and simultaneous exposure conditions.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"149 ","pages":"Article 108866"},"PeriodicalIF":5.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254585","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

Validation of real-time aging simulation of poly(lactic acid) (PLA) using accelerated aging in accordance with ASTM F1980 根据ASTM F1980使用加速老化对聚乳酸（PLA）进行实时老化模拟验证

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-06 DOI: 10.1016/j.polymertesting.2025.108880

Natalie Krug, Chaimae Chettouh, Jan-Christoph Zarges, Hans-Peter Heim

{"title":"Validation of real-time aging simulation of poly(lactic acid) (PLA) using accelerated aging in accordance with ASTM F1980","authors":"Natalie Krug, Chaimae Chettouh, Jan-Christoph Zarges, Hans-Peter Heim","doi":"10.1016/j.polymertesting.2025.108880","DOIUrl":"10.1016/j.polymertesting.2025.108880","url":null,"abstract":"<div><div>To advance the application of bio-based materials in medical technology, further research is required to assess their long-term performance. In common practice, accelerated aging tests based on ASTM F1980 are used in medical contexts to predict material behavior over time. This standard provides calculation guidelines to determine the equivalent storage duration under artificially accelerated aging conditions using a Q<sub>10</sub>-factor. This factor, typically assumed to be 2, represents the increase in reaction rate due to elevated temperatures.</div><div>In this study, a comparison was conducted between accelerated aged samples and their real-time equivalents using various PLA types. The results indicate that the standard assumption of Q<sub>10</sub> = 2 can lead to an overestimation of degradation, resulting in a misrepresentation of real-time aging behavior. This discrepancy is substantiated by experimental data, including mechanical, thermal, and chemical analyses. A key factor contributing to this deviation appears to be the reliance on overly simplistic assumptions regarding degradation kinetics, which fail to account for autocatalytic reactions and the inherently multi-stage nature of the degradation process. In the present study, this observation was further corroborated through the determination of material-specific Q<sub>10</sub>-factors. These factors, found to range between 2.3 and 2.5, exhibited dynamic variations throughout the degradation process, highlighting the need for a refined approach to accelerated aging methodologies.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"149 ","pages":"Article 108880"},"PeriodicalIF":5.0,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240215","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

Electrospun fibers/nanofibers loaded with phase change materials: Characterization, applications and challenges 负载相变材料的电纺纤维/纳米纤维：表征、应用和挑战

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-04 DOI: 10.1016/j.polymertesting.2025.108879

Moloud Nourani , Seid Mahdi Jafari

{"title":"Electrospun fibers/nanofibers loaded with phase change materials: Characterization, applications and challenges","authors":"Moloud Nourani , Seid Mahdi Jafari","doi":"10.1016/j.polymertesting.2025.108879","DOIUrl":"10.1016/j.polymertesting.2025.108879","url":null,"abstract":"<div><div>Thermal energy storage (TES) has emerged as a significant area of interest for various applications. The concept of latent heat storage enables the storage of substantial energy amounts during phase changes under nearly isothermal conditions, using phase change materials (PCMs). PCM-based TES systems encounter challenges like leakage, driving the development of electrospun phase change fibers (EPCFs) via the electrospinning process to improve PCM containment. Achieving successful fabrication and optimal performance of EPCFs necessitates a thorough investigation into their morphology, surface characteristics, crystallinity, stability, mechanical properties, thermal behavior, and TES capacity. Techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) are employed for detailed surface characterization of EPCFs. Besides surface properties, the thermal characteristics of EPCFs, including thermal stability, cycle durability, and TES efficiency, significantly impact their practical utility in various applications. Experimental methods like thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) are utilized to analyze their thermal properties. EPCFs have found diverse applications in textiles, thermos-responsive sensors, biomedical systems, and more, showcasing their versatility. Nonetheless, challenges persist in customizing EPCFs for specific applications, addressing PCM leakage, and ensuring optimal performance. This review article extensively explores the characterization methods, applications, and challenges associated with EPCFs in TES systems, offering insights into future research directions and strategies for overcoming existing challenges.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"150 ","pages":"Article 108879"},"PeriodicalIF":5.0,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271273","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

Enhancing mechanical and thermal properties of isophthalic polyester resin composites reinforced with graphene oxide and nanosilica using RSM and ANN 用RSM和ANN增强氧化石墨烯和纳米二氧化硅增强间苯二甲酸聚酯树脂复合材料的力学和热性能

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-06-01 DOI: 10.1016/j.polymertesting.2025.108876

Azhagarsamy Sekar , Pannirselvam Narayanan

{"title":"Enhancing mechanical and thermal properties of isophthalic polyester resin composites reinforced with graphene oxide and nanosilica using RSM and ANN","authors":"Azhagarsamy Sekar , Pannirselvam Narayanan","doi":"10.1016/j.polymertesting.2025.108876","DOIUrl":"10.1016/j.polymertesting.2025.108876","url":null,"abstract":"<div><div>This study examines the mechanical and thermal characteristics of isophthalic polyester (IP) resin composites reinforced with graphene oxide (GO), nanosilica (NS), and their hybrid combinations. Composites with different filler concentrations of 0.05, 0.1, 0.3, and 0.5 wt percentages were assessed by tensile, flexural, impact strength, and flammability tests. Structural properties were examined via X-ray diffraction (XRD). The findings indicate that incorporating GO and NS improves the mechanical properties of IP resin composites, with the hybrid composite at 0.3 wt% attaining peak performance. The hybrid composite at 0.3 wt% demonstrated a 59.47 % enhancement in tensile strength and an 82.16 % augmentation in flexural strength relative to pure IP resin. Moreover, the 0.3 wt% hybrid composites exhibited enhanced fire resistance, signifying a significant decrease in flammability. XRD analysis validated the effective integration of GO and NS into the IP resin matrix. Mechanical properties were predicted using two computational approaches: artificial neural networks (ANN) and response surface methodology (RSM). The RSM model precisely predicted tensile strength (R<sup>2</sup> > 0.9736) and flexural strength (R<sup>2</sup> ≥ 0.9736). The ANN model demonstrated remarkable accuracy, with correlation coefficients above (R > 0.890) for tensile strength and (R > 0.999) for flexural strength in training, testing, and validation, highlighting its effectiveness in capturing data variability. The comparison of the models found that the ANN model exceeded the RSM in predictive accuracy, as demonstrated by a robust correlation between experimental and anticipated values. The exceptional mechanical properties and fire resistance of hybrid IP resin composites make them suitable for high-performance structural applications in the automotive, construction, and aerospace industries.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"149 ","pages":"Article 108876"},"PeriodicalIF":5.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196384","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