Haoliang Ding^1,2, Han Yu², Yunfeng Zhao², Chunze Yan¹, Yusheng Shi^1,*, Binling Chen^3,*

Journal of Polymer Materials, Vol.42, No.2, pp. 497-516, 2025, DOI:10.32604/jpm.2025.063324 - 14 July 2025

Abstract Polyether ether ketone (PEEK)-based continuous glass fiber reinforced thermoplastic composite offers advantages such as high strength, electrical insulation, and heat insulation. Parts manufactured using this composite and 3D printing have promising applications in aerospace, automobile, rail transit, etc. In this paper, a high-temperature melt impregnation method was used to successfully prepare the 3D printing prepreg filaments of the aforementioned composite. In the FDM 3D printing equipment, a nozzle of high thermal conductivity and wear-resistant copper alloy and a PEEK-based carbon fiber thermoplastic composite build plate with uniform temperature control were innovatively introduced to effectively improve… More >

Jiefei Huang¹, Hao Zhou¹, Mengying Chen¹, Lei Yang^1,2,*

Journal of Polymer Materials, Vol.42, No.2, pp. 307-338, 2025, DOI:10.32604/jpm.2025.062620 - 14 July 2025

Abstract Vibration isolation is vital in engineering machinery, as it not only seriously affects the service life of machine components but also reduces the operating efficiency. Recently, metamaterials have been proposed for customized vibration-isolation needs through various functional designs. As a synthetic material, polymer materials have the advantages of good elasticity, low density, high specific strength, good corrosion resistance and easy processing, making it an ideal raw material for vibration-isolation metamaterials. At the same time, the rapid development of additive manufacturing (AM) provides a feasible method for preparing polymeric vibration-isolation metamaterials with complex structures. In this More >

Kartikey Shahi, Velmurugan Ramachandran^*, Ranjith Mohan, Boomurugan Ramachandran

Journal of Polymer Materials, Vol.42, No.2, pp. 477-496, 2025, DOI:10.32604/jpm.2025.062481 - 14 July 2025

Abstract A Shape Memory Polymer Composite (SMPC) is developed by reinforcing an epoxy-based polymer with randomly oriented short glass fibers. Diverging from previous research, which primarily focused on the hot programming of short glass fiber-based SMPCs, this work explores the potential for programming below the glass transition temperature (Tg) for epoxy-based SMPCs. To mitigate the inherent brittleness of the SMPC during deformation, a linear polymer is incorporated, and a temperature between room temperature and Tg is chosen as the deformation temperature to study the shape memory properties. The findings demonstrate an enhancement in shape fixity and More >

Bandana Padhan^1,#, Rajkumar Patel^2,#, Priyanka Bhowmik³, Ananya Roy¹, Joyjyoti Das^1,*, Yong Yu^4,5, Madhumita Patel^6,*

Journal of Polymer Materials, Vol.42, No.2, pp. 411-433, 2025, DOI:10.32604/jpm.2024.059156 - 14 July 2025

Abstract The food industry prioritizes food safety throughout the entire production process. This involves closely monitoring and evaluating all potential sources of biological or chemical contamination, starting from entering raw materials into the production chain and continuing to the final product. Biofilms on food surfaces or containers can harbor dangerous pathogens, such as Listeria monocytogenes. Therefore, it is essential to continuously manage microbial contamination on food contact surfaces to prevent foodborne infections. Recently, there has been increasing interest in using nanomaterials as surface coatings with antimicrobial properties in the food industry, especially since traditional disinfectants or antibiotics… More >

Hanyi Zou^1,2,#, Xinye Xu^1,3,#, Mutian Yao¹, Baoyang Lu^1,*

Journal of Polymer Materials, Vol.42, No.2, pp. 339-358, 2025, DOI:10.32604/jpm.2024.057955 - 14 July 2025

Abstract The global scarcity of clean water is an escalating issue due to climate change, population growth, and pollution. Traditional water purification technologies, while effective, often require significant energy input and complex infrastructure, limiting their accessibility. This review explores the use of conjugated polymer hydrogels as a promising solution for solar water purification. Conjugated polymer hydrogels offer unique advantages, including high photothermal conversion efficiency, effective heat management, and rapid water transport, which are crucial for efficient solar-driven water evaporation. By leveraging the properties of these hydrogels, it is possible to significantly reduce the energy required for More >

Wuyi Zhu¹, Meng Zou¹, Wenji Liu¹, Linlin Cui^2,*

Revue Internationale de Géomatique, Vol.34, pp. 363-377, 2025, DOI:10.32604/rig.2025.065708 - 14 July 2025

Abstract Exploring the spatiotemporal changes in Fractional Vegetation Coverage (FVC) helps to more accurately understand the quality of the ecological environment, which is of great significance for regional ecological protection and sustainable economic development. The study takes the Chengdu-Chongqing urban agglomeration as the research area, analyzes the characteristics and trends of vegetation cover changes from 2000 to 2020 using the Google Earth Engine cloud platform, and explores its driving factors based on the enhanced regression tree model. The results show that: (1) From 2000 to 2020, the annual FVC of the Chengdu-Chongqing urban agglomeration showed a… More >

Hossana Maghiri Sufficient^*, Abdulazeez Murtala Mohammed, Bashir Danjuma

Journal of Cyber Security, Vol.7, pp. 239-253, 2025, DOI:10.32604/jcs.2025.066312 - 14 July 2025

Abstract The rapid integration of artificial intelligence (AI) into ethical hacking practices has transformed vulnerability discovery and threat mitigation; however, it raises pressing ethical questions regarding responsibility, justice, and privacy. This paper presents a PRISMA-guided systematic review of twelve peer-reviewed studies published between 2015 and March 2024, supplemented by Braun and Clarke’s thematic analysis, to map four core challenges: (1) autonomy and human oversight, (2) algorithmic bias and mitigation strategies, (3) data privacy preservation mechanisms, and (4) limitations of General Data Protection Regulation (GDPR) and the European Union’s AI Act in addressing AI-specific risks, alongside the… More >

Qiang Xiong^*, Jianlong Zhang, Qianwen Song

Journal of Cyber Security, Vol.7, pp. 255-277, 2025, DOI:10.32604/jcs.2025.065625 - 14 July 2025

Abstract In the domain of information security outsourcing, the multi-stage game-theoretic decision-making process, intertwined with moral hazard and dynamic strategy adjustments, significantly impacts the long-term collaboration between the principal (outsourcing enterprise) and the contractor (Managed Security Service Provider—MSSP). This paper conducts a comprehensive analysis of these aspects within information security outsourcing partnerships. A multi-stage game model incorporating moral hazard is constructed to meticulously examine the strategic behaviors and expected revenue fluctuations of both parties across different cooperation stages. Through in-depth model derivation, the impacts of service fees, cooperation-stage progression, and long-term cooperation on expected revenues are… More >

Harri Renney^1,*, Isaac V Chenchiah², Maxim Nethercott¹, Rohini Paligadu¹, James Lang¹

Journal of Cyber Security, Vol.7, pp. 221-238, 2025, DOI:10.32604/jcs.2025.064958 - 14 July 2025

Abstract In recent years, the field of cybersecurity has expanded to encompass a deeper understanding of best practices, user behaviour, and the tactics, motivations, and targets of threat actors. At the same time, there is growing interest in how cyber data analytics can support informed decision-making at senior levels. Despite the broader advancements, the field still lacks a robust scientific foundation for accurately calculating cyber vulnerability risk. Consequently, vulnerabilities in hardware and software systems often remain unaddressed for extended periods, undermining the effectiveness of risk mitigation efforts. This paper seeks to address the gap in vulnerability… More >

Xiaofeng Wang^1,#, Xingwei Chen^2,#, Shilin Wang¹, Xia Li¹, Zhongyuan Lu¹, Wenlong Wang¹, Xu Wang^1,*

Congenital Heart Disease, Vol.20, No.3, pp. 401-402, 2025, DOI:10.32604/chd.2025.070042 - 11 July 2025

Abstract This article has no abstract. More >