{"title":"Collagen fibers as biomass templates constructed multifunctional polyvinyl alcohol composite films for biocompatible wearable e-skins","authors":"Ya-nan Wang, Guge Niku, Hao Chen, Yujia Wang","doi":"10.1515/secm-2025-0058","DOIUrl":"https://doi.org/10.1515/secm-2025-0058","url":null,"abstract":"Abstract Multifunctional characteristics are of significance for development of bionic skin materials. Herein, we report the collagen fibers (CFs) as biomass templates constructed multifunctional polyvinyl alcohol composite films (PCBPP) that integrate the diverse properties including the good thermal stability, water resistance, self-healing ability, adhesiveness, benign biocompatibility, and sensitive electrical signal response within a single structure, realize much more favorable functionalities in mimicking natural skin. The CFs as biomass template well immobilize and stabilize the polypyrrole (PPy) nanoparticles, which simultaneously improves the dispersity of PPy and enhances its conductivity. More importantly, due to the CFs constructed conductive paths and micro- and nano-sensing structure, the PCBPP prepared e-skin exhibits the GF value of 0.366 in the strain range of 10–40% and is able to distinguish different strain intensities and monitor the movements of the human body, including wrist bending, elbow bending, and swallowing. The self-healed PCBPP prepared e-skin exhibited the recoverable sensitivity. Our investigation provided a new prospect for designing CFs as conductive network packed multifunctional composite film and the as-prepared PCBPP exhibits great potential for versatile applications in various wearable devices and in the field of artificial intelligence.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.degruyterbrill.com/document/doi/10.1515/secm-2025-0058/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Properties and mechanism of ceramizable silicone rubber with enhanced flexural strength after high-temperature","authors":"Shuo Li, Yingqiang Feng, Heyi Ge","doi":"10.1515/secm-2025-0061","DOIUrl":"https://doi.org/10.1515/secm-2025-0061","url":null,"abstract":"Abstract Ceramizable silicone rubber (SR) composites, which transform into high-strength ceramics at high temperatures, are crucial for fire-resistant applications. This study investigates the synergistic effects of ammonium polyphosphate (APP) and zinc borate (ZB) on the mechanical properties and thermal stability of ceramizable SR composites. The results show that the addition of APP and ZB significantly enhances the flexural strength and thermal stability of the composites at high temperatures, while maintaining their elasticity and electrical insulation properties at room temperature. The synergistic effect of APP and ZB leads to the formation of a liquid phase at high temperatures, which binds the residual materials and promotes the formation of mullite and aluminum borate crystals, resulting in a high-strength ceramic matrix. The composite exhibits excellent elongation at break (492.36%) and electrical insulation (volume resistance of 1.89 × 10 14 Ω m) at room temperature, and a flexural strength of 39.47 MPa after heat treatment at 1,000°C.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiao‐Rong Wang, Wenjing Wei, Yanzhe Yang, Guoyan Ma
{"title":"Synthesis and properties of octahedral silsesquioxane with vinyl acetate side group","authors":"Xiao‐Rong Wang, Wenjing Wei, Yanzhe Yang, Guoyan Ma","doi":"10.1515/secm-2025-0068","DOIUrl":"https://doi.org/10.1515/secm-2025-0068","url":null,"abstract":"Abstract A new type of octa polyhedral oligomeric silsesquioxane (Octa DMS-POSS) has been obtained. The synthesized Octa DMS-POSS is further modified with vinyl acetate in order to obtain a vinyl acetate-polyhedral oligomeric silsesquioxane (VAPOSS) with a better potential to absorb CO 2 . The effect of reaction temperature, reaction time, and solvent type is optimized by testing the product yield. The effect of vinyl acetate molar ratio on the crystalline, thermal stability, and contact angle is measured through the X-ray diffraction, differential scanning calorimeter, and contact angle tests. CO 2 adsorption measurements at 273.0 K were carried out in order to evaluate its potential application in CO 2 capture. Optimal preparation conditions are the reaction temperature 25 °C, reaction time 12 h, reaction solvent DMF. The highest yield is 80 %. The addition of VAc appears to interfere with the formation of new crystalline structures. As the VAc content increased, the melting temperatures showed an upward trend, and the contact angle first increased and then decreased slightly. The CO 2 uptakes VAPOSS3 were found to be 1.46 mmol⋅g −1 (6.42 wt%). As the molar ratio of VAc to POSS increased, the adsorption capacity increased.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.degruyterbrill.com/document/doi/10.1515/secm-2025-0068/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optical properties and artistic color characterization of nanocomposite polyurethane materials","authors":"Jian Hu, Youqiang Zhang","doi":"10.1515/secm-2025-0054","DOIUrl":"https://doi.org/10.1515/secm-2025-0054","url":null,"abstract":"Abstract Nanocomposite polyurethane (PU) materials have broad application prospects in the fields of optics and artistic colors, but there are few systematic studies on the application of nano-titanium dioxide (TiO₂), nano-zinc oxide (ZnO), and nano-silver (Ag) in PU matrices. The aim of this study is to prepare a PU matrix with the same transmittance but better UV absorption by adding these nanoparticles to improve the optical properties and UV resistance of the material. In this study, the solution method was used to prepare and characterize nano-TiO 2 , ZnO and Ag particles, and their addition amount and dispersion state were precisely controlled to prepare composite materials with different mass fractions. The properties of these composites were comprehensively evaluated by UV-visible spectroscopy analysis, transmission electron microscopy observation, and color measurement methods. The results showed that nano-TiO₂ significantly improved the transparency and UV blocking ability of the material, nano-ZnO enhanced the UV stability, and nano-Ag improved the transparency, antibacterial properties, and color stability. The specific data are as follows: the transmittance of nano-TiO 2 and ZnO dropped from 85 to 55%, respectively, and the transmittance of nano-Ag dropped from 90 to 60%; in terms of ultraviolet absorption rate, nano-TiO 2 increased from 10 to 45%, ZnO increased from 15 to 50%, and Ag increased from 20 to 55%. In addition, the study evaluated the effects of UV irradiation on the optical properties and color stability of the nanocomposites and found that the addition of nanoparticles significantly improved the material’s resistance to UV aging. In summary, the kind and location of nanoparticles have a substantial impact on the properties of PU composites. This study provides a scientific basis for the creation of high-performance nanocomposite PU materials.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.degruyterbrill.com/document/doi/10.1515/secm-2025-0054/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact resistance capacity and degradation law of epoxy-coated steel strand under the impact load","authors":"Hongming Li, B. Feng, Yan Xu, J. Zhong","doi":"10.1515/secm-2022-0190","DOIUrl":"https://doi.org/10.1515/secm-2022-0190","url":null,"abstract":"Abstract As the main load-bearing component of the bridge structure, the cable is damaged by the impact from time to time, so it is very important to clarify its impact resistance capacity. Based on the method of the drop-weight test, this article mainly studies the degradation law of the mechanical properties of epoxy-coated steel strand (ECSS) under the impact load. Through the impact test of ECSS under different working conditions, the influence law of prestress, impact energy, initial defects and other factors on the impact resistance of the steel strand was revealed. Then, the difference of the impact resistance of ECSS and ordinary steel strand (OSS) was verified under the same impact conditions. Finally, the failure mechanism and the residual-bearing capacity of ECSS were analyzed through the secondary impact test. The results show that the initial prestress is helpful to improve its impact resistance when it is less than 0.11 f u {f}_{{rm{u}}} , and exceeding this value will accelerate its failure process. The effect of impact height on the strain at the impact point of ECSS is significantly greater than that near the anchor end. ECSS has better energy absorption characteristics than OSS. The impact resistance of ECSS with initial defects is very sensitive to the impact energy. The influence on outer strand in the secondary impact is significantly higher than the central strand, and its residual tensile capacity still has 0.85 f u {f}_{{rm{u}}} .","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44278745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Mzali, F. Elwasli, F. Zemzemi, S. Mezlini, A. Mkaddem, M. Bouazizi
{"title":"Analysis of material removal process when scratching unidirectional fibers reinforced polyester composites","authors":"S. Mzali, F. Elwasli, F. Zemzemi, S. Mezlini, A. Mkaddem, M. Bouazizi","doi":"10.1515/secm-2022-0172","DOIUrl":"https://doi.org/10.1515/secm-2022-0172","url":null,"abstract":"Abstract In this study, the micromechanical scratch behavior of unidirectional glass fiber reinforced polyester (GFRP) using several wear conditions was highlighted. Single-indenter scratch tests (SSTs) were carried out on GFRP composite material perpendicular (SST⊥) and parallel (SST//) to fiber direction. Damage modes dominating the material removal process (MRP) and friction exhibit significant sensitivity to both attack angle and normal load. From findings, damage modes and apparent friction coefficient substantially accentuate when increasing the attack angle. The inspections of the damage state at different testing conditions using a scanning electron microscope (SEM) reveal the dominating modes governing the MRP through the different phases. The response surface methodology (RSM) was adopted to develop a mathematical model based on the measured data. The RSM approach was found very promoting for predicting friction evolution versus attack angle and normal load. The proposed model reveals good ability not only in predicting apparent friction coefficient but also in detecting separately its ploughing and adhesive component. To emphasize the correlation between friction coefficient and MRP, the wear maps have been drawn up.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49257876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental study on hydraulic fracture behavior of concrete with wedge-splitting testing","authors":"Wenhu Zhao, T. Fang, Xiaocui Chen, Liguo Sun","doi":"10.1515/secm-2022-0182","DOIUrl":"https://doi.org/10.1515/secm-2022-0182","url":null,"abstract":"Abstract The aim of this paper is to investigate the water pressure effects on hydraulic fracture behavior of concrete with wedge-splitting testing under dynamic loading. Five waterproof strain gauges are stuck along the crack path to observe the fracture process during the experiments. Four silicon water pressure sensors successfully measured the water pressure value on concrete face. The results show that the water pressure on crack faces accelerates the crack propagation of the concrete. The critical values of the splitting force decrease 26.7 and 25.6%, respectively, with the external applied water pressure of 0.2 and 0.4 MPa. Moreover, the hydraulic crack propagation speed increases at the beginning and tends to reach a peak value finally. The peak value of cracking speed is 11.08 m/s, which is high. Under dynamic loading, the water fails to fill the crack and only the trapped water interacts with the crack face. The water pressure is mainly a parabolic curve distribution along the crack path and the peak value decreases with the increase in the crack length.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47667852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bo Xu, B. van den Hurk, Sean J. D. Lugger, Rijk Blok, P. Teuffel
{"title":"Creep analysis of the flax fiber-reinforced polymer composites based on the time–temperature superposition principle","authors":"Bo Xu, B. van den Hurk, Sean J. D. Lugger, Rijk Blok, P. Teuffel","doi":"10.1515/secm-2022-0218","DOIUrl":"https://doi.org/10.1515/secm-2022-0218","url":null,"abstract":"Abstract Natural plant fiber-reinforced polymer composites (PFRP) have emerged as an environmental-friendly material in the construction industry, but their creep behavior is a critical concern for load-bearing structures. This study investigates the creep behavior of flax fiber-reinforced polymer composites (FFRP) using the time–temperature superposition principle (TTSP). Due to the application of TTSP on the tensile creep behavior of FFRP is not fully understood, three potential methods for calculating the critical parameters during TTSP are compared to obtain an efficient application method to build the creep master curve. A 2,000-h long-term creep test is conducted parallelly on the same sample to validate the accuracy of the creep analysis results. The study proposes an ideal method to determine the key parameters in TTSP, providing valuable insights for the practical application of PFRP in the construction industry. Meanwhile, the research results in this study would be helpful in better understanding the creep behavior of FFRP via short-term accelerated tests.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41727973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of microstructure characteristics on the transverse moisture diffusivity of unidirectional composite","authors":"Mengnan Wang, Xiaochen Hang","doi":"10.1515/secm-2022-0201","DOIUrl":"https://doi.org/10.1515/secm-2022-0201","url":null,"abstract":"Abstract To reveal the effects of the microstructure characteristics including fiber shape, void, fiber distribution pattern, and interphase on the transverse moisture diffusivities of unidirectional composites, the steady analysis method based on Fick’s law is adopted. The predicted numerical results are compared with the results from the analytical models to demonstrate the accuracy. From the simulation results, it is found that the increase in the oscillation amplification of non-circular fibers contributes to the orthotropy of diffusivity properties, which attributes to different barrier effects along different directions. The consideration of interphase relieves the barrier effects and the predicted diffusivity values are increased significantly. The effects of voids increase with the void volume fraction and are dependent on the voids’ location. If the fiber random distribution pattern is considered, it is found that the average values of predicted diffusivity decrease gradually with the increase in the number of oscillations.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45961211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhammad Alam, Hani Alanazi, Fadi Althoey, A. Deifalla, J. Ahmad
{"title":"Mechanical performance of concrete made with sewage sludge ash: A review (Part Ⅰ)","authors":"Muhammad Alam, Hani Alanazi, Fadi Althoey, A. Deifalla, J. Ahmad","doi":"10.1515/secm-2022-0203","DOIUrl":"https://doi.org/10.1515/secm-2022-0203","url":null,"abstract":"Abstract Sewage sludge is frequently stable and safe when used as construction materials since it bypasses several of the costly and energy-intensive phases of usage. This is supported by numerous studies, particularly when the proportion of sewage sludge is at ideal levels. The primary goal of this article is to demonstrate the use of sewage sludge in building and construction materials. Novel properties such as slump flow and setting time as well as strength properties such as compressive strength, tensile strength, flexural strength, elastic modulus, impact energy, and absorbed energy are the main aspects studied in this review (Part Ⅰ). Part II describes the physical and chemical properties, durability, and morphological structure of the sewage sludge ash. The findings in this review (Part Ⅰ) indicate that the flow of concrete decreased with the addition of sewage sludge ash due to its porous nature, but the strength properties improved with sewage sludge ash due to micro-filling voids and pozzolanic activity, which improved the binding properties of cement paste. However, optimum substitution is critical as a greater proportion decreased the strength due to a deficiency of flowability, which boosted compaction energy leading to more cavities. Different studies recommend different optimum doses. However, the typical range for the optimum dose of sewage sludge ash is 5–10% (by wt) of cement.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47087976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}