Article
Materials Science, Composites
Patcharapon Somdee, Manauwar Ali Ansari, Kalman Marossy
Summary: In this study, flexible and rigid polyurethane/copper composites were prepared via a simple solution casting process. The dispersion and chemical bonding of the filler were investigated, and the thermal properties and mechanical properties of the composites were analyzed. The results showed that the thermal conductivity of the composites was significantly improved compared to the pure polyurethane, and the mechanical properties were also enhanced. The study suggests that copper microparticles can serve as an active filler in both flexible and rigid polyurethane matrices.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Laszlo Jozsef Varga, Tamas Barany
Summary: The study examined polypropylene-based single-polymer composites (SPCs) utilizing APAOs as matrices and polypropylene fabrics as reinforcement. The composites exhibited good static and dynamic properties with optimal consolidation temperature between 120-140 degrees C, while stronger fabrics improved mechanical properties. APAOs widened the processing temperature window and the SPCs possessed numerous beneficial properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Jun Tong, Huannan Zheng, Jinwei Fan, Wei Li, Zhifeng Wang, Haichen Zhang, Yi Dai, Haichu Chen, Ziming Zhu
Summary: In this study, maleic anhydride (MA) was used to fabricate poly(vinylidene fluoride)/expanded graphite (PVDF/EG) composites via one-step melt mixing. The addition of MA promoted the exfoliation and dispersion of EG in the PVDF matrix, resulting in higher thermal conductivities compared to the PVDF/EG composites without MA. The introduction of MA also increased the melting peak temperature and crystallinity, providing a more efficient method for preparing PVDF/EG composites with high thermal conductivity.
Article
Materials Science, Composites
Ting Gu, De-xiang Sun, Xu Xie, Xiao-dong Qi, Jing-hui Yang, Yan-zhou Lei, Yong Wang
Summary: This article introduces a method for preparing renewable high thermal conductivity composites and investigates their thermal and mechanical properties. The results show that the composites exhibit high thermal conductivity, good mechanical properties, flame retardancy, and electrical conductivity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Hideto Tsuji, Kazumasa Iguchi, Yuki Arakawa
Summary: The research studied the effects of different molecular weights of crystalline blocks but similar overall molecular weights on the crystallization behavior, structure, morphology, and thermal properties of PLLA-b-PDLLA/PDLA-b-PDLLA blends. It was found that the incorporated long amorphous PDLLA blocks facilitated unique SC crystallization in the blends with different crystalline block fractions.
Article
Energy & Fuels
Wondu Lee, Jooheon Kim
Summary: This study prepared novel phase change material composites with high thermal conductivity and latent heat by grafting palmitic acid and expanded graphite onto poly(dimethylsiloxane) (PDMS). These composites show potential in thermal management and electronic packaging fields.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Characterization & Testing
Wondu Lee, Jooheon Kim
Summary: Polymer composites with low dielectric loss and high thermal conductivity were successfully fabricated by hybridizing reduced graphene oxide and boron nitride, sintering silver nanoparticles, and infiltrating poly(dimethylsiloxane). Aligned BN on the surface of graphene oxide achieved a well-ordered filler structure, leading to enhanced thermal conductivity.
Article
Materials Science, Composites
Hua Xiao, Zi Xin Huang, Ze Ping Zhang, Min Zhi Rong, Ming Qiu Zhang
Summary: A facile strategy for effectively constructing in-plane and through-plane thermal conduction paths in polyimide (PI) and its flexible copper clad laminates (FCCLs) was reported by incorporation of hexagonal boron nitride (h-BN) in a controlled manner. The specific sea-island architecture allowed the preparation of highly thermally conductive flexible PI film and its FCCLs at relatively lower total boron nitride loading. The results of the current work may open a new avenue for promoting the practical application of thermally conductive PI based FCCLs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Xianyuan Liu, Zilong Wang, Jinsong Sun, Zehua Zhao, Shuyi Zhan, Ying Guo, Heng Zhou, Wenbin Liu, Jun Wang, Tong Zhao
Summary: The study successfully synthesized Al2O3@graphite core-shell particles with excellent thermal conductivity and electrical insulation properties, and fabricated thermally stable phthalonitrile composites, which could potentially be used for high-temperature thermal management applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Mengting Shu, Ping Zhang, Yazhe Han, Xin Ding, Yanyan Wang, Qian Zhang, Yi Gong, Kang Zheng, Xingyou Tian, Xian Zhang
Summary: This study successfully improved the thermal conductivity of PEI/SBC composites by constructing a segregated structure, and found that hot-processing temperature and particle size influenced the formation of LMPA segregated structure, as well as the importance of the small size of PEI microspheres for densification of polymer matrix.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Multidisciplinary
Minhang Chen, Tingting Yin, Peng Fu, Haibo She, Xiaomeng Zhang, Wei Zhao, Zhe Cui, Xinchang Pang, Qingxiang Zhao, Minying Liu
Summary: This study successfully explored novel polyamide 12 (PA12) based template composites with significantly improved localized and unidirectional thermally conductive property achieved through selectively distributed boron nitride (BN). The experiment and simulated results revealed that the enhanced thermally conductive property was attributed to the selectively distributed BN, enabling precise and controllable heat dissipation for high-frequency and high-speed electronic devices.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Bin Chen, Jiawei Gong, Wei Huang, Ning Gao, Cong Deng, Xueqin Gao
Summary: Inspired by the clam-shell structure of pearls, a thermally conductive high-density polyethylene (HDPE) reinforced with two-dimensional boron nitride (BN) filler was successfully fabricated using a rotational shear system. The presence of a shish-kebab structure and aligned BN (002) plane resulted in an increased Vicat softening temperature of 107.9 degrees C, demonstrating excellent heat resistance. The composite with 35 vol% BN loading exhibited the optimal thermal conductivity of 1.26 W/mK and a tensile strength of 40 MPa. This study has developed HDPE/BN composites with effective thermal dissipation and higher service temperature, providing longer service life and reduced material replacement frequency under extreme operating conditions.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
Fubin Luo, Shuguang Yang, Pinping Yan, Hongzhou Li, Baoquan Huang, Qingrong Qian, Qinghua Chen
Summary: Liquid Crystal Polymer (LCP) / hexagonal boron nitride (BN) composites with highly aligned nematic domains and orderly arrangement of BN were manufactured using 3D printing. The composites exhibited high thermal conductivity.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Youpeng Zhang, Chong Ding, Na Zhang, Xiangyun Di, Yi Li, Yihe Zhang
Summary: Filler agglomeration and poor compatibility between inorganic filler and organic matrix are key issues affecting the properties of PVC-based composites. Surface treatment of iron ore tailings (IOT) with commercially available silane and titanate coupling agents improves the dispersibility and hydrophobicity of IOT, as well as enhances the inorganic-organic interface compatibility. As a result, the properties of the composites filled with modified IOT (S-IOT/PVC and T-IOT/PVC) are superior to those filled with unmodified IOT (IOT/PVC). Among the modified fillers, T-IOT shows the best performance, exhibiting significant improvements in tensile strength, Young's modulus, flexural strength, and notched impact strength.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Manufacturing
Yabi Yang, Shuang Liu, Guoliang Zhang, Ziqing Hu, Liang Jin, Bingqing Quan, Xiaoyun Hao, Hao Wu, Xiaofan Ji, Xiang Lu
Summary: The design of CNF-encapsulated PEG-based PCCs has effectively addressed the issue of phase transition leakage and enabled leakage monitoring. The CNF6/Pmix2 composite exhibits excellent thermal energy storage and reusability, indicating promising applications in energy conversion and storage.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Polymer Science
Lazaros Papadopoulos, Natalia Maria Malitowski, Dimitrios Bikiaris, Tobias Robert
Summary: A series of bio-based polyesters derived from itaconic acid were synthesized as alternative binder resins for UV-curing additive manufacturing processes. These polyesters, created using different diols and dicarboxylic acids from petrochemical and renewable resources, have not been previously described. The influence of the chemical structures of these materials on their physicochemical properties was thoroughly investigated. The polyesters showed tunable properties and an overall bio-based content up to 85%, making them suitable for additive manufacturing materials.
EUROPEAN POLYMER JOURNAL
(2023)
Review
Polymer Science
Athira John, Klementina Pusnik Cresnar, Dimitrios N. Bikiaris, Lidija Fras Zemljic
Summary: Due to increasing consumer demand, the food packaging industry is opting for packaging materials with active functions. Active compounds are added as coatings to the base packaging material for maintaining physicochemical properties and enhancing efficiency. Colloidal systems, specifically colloidal dispersions, are potential candidates for active coatings due to their controlled release and uniform distribution. This review focuses on analyzing the advantages of using natural bio-based substances and packaging materials like PLA, considering consumer awareness and environmental concerns. It also briefly discusses the antiviral concept through surface application, addressing the current pandemic crisis and cross-infection prevention.
Article
Polymer Science
Dimitra Kourtidou, Dimitrios Karfaridis, Thomas Kehagias, George Vourlias, Dimitrios N. Bikiaris, Konstantinos Chrissafis
Summary: Poly(ethylene 2,5-furandicarboxylate) (PEF) nanocomposites reinforced with Graphene nanoplatelets (GNPs) and Carbon nanotubes (CNTs) were synthesized in situ in this study. The incorporation of fillers resulted in changes in lamellar thickness and increased crystallinity of the PEF matrix, thus broadening its potential applications.
Article
Chemistry, Multidisciplinary
Eleftheria Xanthopoulou, Zoi Terzopoulou, Alexandra Zamboulis, Savvas Koltsakidis, Dimitrios Tzetzis, Katerina Peponaki, Dimitris Vlassopoulos, Nathanael Guigo, Dimitrios N. Bikiaris, George Z. Papageorgiou
Summary: The synthesis of a new high molecular weight aliphatic-aromatic polyester, poly(hexylene vanillate) (PHV), using 4-(6-hydroxyethoxy)-3methoxybenzoic acid via a two-stage melt polycondensation method is reported. The success of the polymerization was confirmed using nuclear magnetic resonance spectroscopy (NMR) and Fourier transformed infrared spectroscopy (FTIR), while the number average molecular weight (Mn) was estimated by size-exclusion chromatography (SEC). The thermal behavior, mechanical properties, and processability of PHV were investigated, showing its potential as a biobased polyester material.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Composites
P. Ketikis, I Ketikis, P. A. Klonos, T. Giannakopoulou, A. Kyritsis, C. Trapalis, P. A. Tarantili
Summary: Multiwalled carbon nanotubes (MWCNTs) were mixed with EPDM to form composites using an internal mixer. The structure of CNTs was slightly deteriorated due to the intensive mixing conditions. The thermal stability of the composites was improved, but the glass transition temperature remained unaffected. The composites also showed improved elasticity, reduced swelling, and enhanced electromagnetic interference shielding effectiveness.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Eleni Evgenidou, Konstantina Vasilopoulou, Lelouda-Athanasia Koronaiou, George Kyzas, Dimitrios Bikiaris, Dimitra Lambropoulou
Summary: This study investigates the photocatalytic transformation of the antiviral drug abacavir using different advanced oxidation processes (AOPs) and assesses their efficiency in removing abacavir in different matrices. The results show that all processes are effective in eliminating abacavir within a short time, but the presence of organic matter or inorganic constituents can hinder the process. The study also identifies major transformation products and their evolution profiles in different matrices, indicating different transformation pathways dominate in each matrix. The toxicity prediction of the major transformation products suggests that only hydroxylation can detoxify the treated solution.
Article
Biochemistry & Molecular Biology
Giulia Fredi, Edoardo Zonta, Alessandro Dussin, Dimitrios N. Bikiaris, George Z. Papageorgiou, Luca Fambri, Andrea Dorigato
Summary: This study successfully prepared and characterized polylactide/poly(propylene 2,5-furandicarboxylate) (PLA/PPF) and polylactide/poly(butylene 2,5-furandicarboxylate) (PLA/PBF) blends in bulk and fiber forms, and investigated the influence of poly(alkylene furanoate) (PAF) concentration and compatibilization on their physical, thermal, and mechanical properties. Both blends were successfully compatibilized by Joncryl, which improved the interfacial adhesion and reduced the size of PPF and PBF domains. PBF was found to effectively toughen PLA in bulk samples, while PPF showed no significant plasticizing effects. In fiber samples, both PPF and PBF exhibited plasticizing effects, resulting in significantly higher strain at break values compared to neat PLA.
Article
Polymer Science
Maria Lazaridou, Panagiotis A. Klonos, Eleni D. Barmpa, Apostolos Kyritsis, Dimitrios N. Bikiaris
Summary: This study investigates polymer blends based on poly(lactic acid) (PLA) and poly(3,3-ethylene dithiodipropionate) (PEDPA) using various experimental techniques. Partial miscibility between the polymers is observed, with well-dispersed PEDPA/PLA structures in the PLA matrix. The crystallization of PLA is suppressed in the blends, while the melting behavior of PEDPA improves slightly.
Article
Materials Science, Composites
Iouliana Chrysafi, Nina Maria Ainali, Eleftheria Xanthopoulou, Alexandra Zamboulis, Dimitrios N. Bikiaris
Summary: This study investigates the thermal degradation of PESu/hemp fiber composites and identifies that the main degradation pathway is the β-hydrogen scission of the polymeric backbone. The results provide valuable thermal behavior information for the application of these composites as alternative wood plastic composites (WPCs).
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Materials Science, Composites
Dimitrios Gkiliopoulos, Dimitrios Bikiaris, Doukas Efstathiadis, Konstantinos Triantafyllidis
Summary: The study evaluated the reinforcing efficiency of SBA-15-type mesoporous silica as an additive in epoxy polymers. The effects of silica loading and its physicochemical characteristics on the properties of glassy and rubbery epoxy mesocomposites were examined. The addition of up to 6 wt.% silica improved the properties of glassy polymers, while up to 9 wt.% silica improved the properties of rubbery polymers.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Materials Science, Composites
Eleftheria Xanthopoulou, Iouliana Chrysafi, Prodromos Polychronidis, Alexandra Zamboulis, Dimitrios N. Bikiaris
Summary: The use of natural fibers to reinforce polymers shows promise in developing environmentally friendly composite materials. This research focuses on reinforcing recycled high-density polyethylene with hemp fibers to create sustainable alternatives to traditional wood/plastic composites. The results demonstrate that these composites possess improved elastic modulus, antioxidant properties, and degradability.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Pharmacology & Pharmacy
Evangelia Balla, Alexandra Zamboulis, Panagiotis Klonos, Apostolos Kyritsis, Panagiotis Barmpalexis, Dimitrios N. Bikiaris
Summary: Novel interpenetrated networks (IPNs) of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide) (SBMA) and poly(vinyl alcohol) (PVA) were prepared for ocular coadministration of timolol maleate (TIM) and dorzolamide hydrochloride (DORZ), both widely used for glaucoma treatment. The IPNs showed significant hydrophilicity and antimicrobial properties, making them suitable for ocular applications. The drug-loaded IPNs exhibited sustained release patterns primarily controlled by diffusion, and were safe for ophthalmic use.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Chemistry, Analytical
Lorenzo Martello, Nina Maria Ainali, Dimitrios N. Bikiaris, Dimitra A. Lambropoulou
Summary: In this study, novel molecularly imprinted polymers (MIPs) were synthesized using penconazole as the template and various combinations of functional monomers and cross-linkers. The MIPs showed higher affinity for triazole pesticides in apple juice compared to non-imprinted polymers. The developed MIP-d-SPE-LC-MS method exhibited excellent selectivity and good performance for the enrichment and determination of triazole compounds in apple juice and river water samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Katerina Papadopoulou, Evangelia Tarani, Nina Maria Ainali, Konstantinos Chrissafis, Christian Wurzer, Ondrej Masek, Dimitrios N. Bikiaris
Summary: In this study, PBSu and its bionanocomposites containing different amounts of biochar were prepared to investigate their thermal stability and decomposition mechanism. XPS was used to analyze the surface area of biochar and PBSu/biochar nanocomposites, and it was found that only physical interactions were present between PBSu matrix and biochar nanoadditive. TGA and Py-GC/MS were used to study the thermal stability and decomposition pathway, showing that the addition of biochar slightly reduced the thermal stability of PBSu nanocomposites and affected the decomposition mechanism.
Article
Chemistry, Physical
Panagiotis A. Klonos, Nikolaos D. Bikiaris, Alexandra Zamboulis, Miguel angel Valera, Ana Mangas, Apostolos Kyritsis, Zoi Terzopoulou
Summary: Two series of sustainable block copolymers based on poly(butylene succinate) (PBSu) and polylactide (PLA) were studied. The effects of PBSu/PLA ratio, chain length, and initial PBSu length on thermal transitions and crystallization of copolymers were investigated. The addition of PBSu improved the performance and degradability of the copolymers, as observed through calorimetry and dielectric spectroscopy.
