Article
Materials Science, Composites
Erick S. S. Guerra, Bruna L. Silva, Jose D. D. Melo, Gerhard Kalinka, Ana P. C. Barbosa
Summary: This study investigates the influence of thermoplastic particles on the fiber-matrix interfacial properties of a glass fiber reinforced epoxy matrix composite, and demonstrates the self-healing ability of the thermoplastic modified epoxy.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Monica Penas-Caballero, Enrico Chemello, Antonio Mattia Grande, Marianella Hernandez Santana, Raquel Verdejo, Miguel A. A. Lopez-Manchado
Summary: Self-healing materials offer a potential solution to the problem of damage to fibre-reinforced plastics (FRPs). By using poly(methyl methacrylate) (PMMA) as a self-healing agent, the study explores its effectiveness when blended with the matrix or applied as a coating to carbon fibres. The results show that blending strategy does not enable healing capacity, while coating the fibres with PMMA achieves up to 53% fracture toughness recovery.
Article
Construction & Building Technology
Harikrishnan Pulikkalparambil, Jyotishkumar Parameswaranpillai, Jurgen Pionteck, Debabrata Nandi, Suchart Siengchin
Summary: This study reports on the self-healing capability of a plant-based bioepoxy resin by incorporating reversible ionic groups using a simple blending process with ionic liquid. The interaction between hydroxyl groups in the resin and the ionic groups in the liquid was found to be reversible, allowing for instantaneous self-healing of minor cracks. Tensile and nanoindentation tests revealed the retention of mechanical properties after self-healing, with the self-healed samples retaining approximately 42% and 53% of their tensile strength and elongation at break.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Applied
Mohammad Sadegh Koochaki, Rasoul Esmaeely Neisiany, Saied Nouri Khorasani, Ali Ashrafi, Stefano P. Trasatti, Mirko Magni
Summary: The study investigated the effects of molecular characteristics of healing agents on the self-healing performance of epoxy coatings. Results showed that increasing the molecular weight of the healing agent had an adverse effect on corrosion protection ability, while increasing its functionality improved the final healing efficiency of the coating. EIS results demonstrated that the maximum healing efficiency was determined to be 85%, 72%, and 90% for Jeffamine D230, Jeffamine D400, and Jeffamine T403, respectively.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Physical
Ghasan Fahim Huseien, Abdul Rahman Mohd Sam, Iman Faridmehr, Mohammad Hajmohammadian Baghban
Summary: The study investigated the use of epoxy resin polymer as a self-healing agent in cement-based mortar to enhance mechanical properties and durability. Results showed that specimens with 10% epoxy resin under wet-dry conditions had higher mechanical properties compared to others. Additionally, the degree of damage and healing efficiency were significantly influenced by healing duration and cracking age.
Article
Polymer Science
Ana Carolina Moreira Silva, Reny Angela Renzetti, Alan Massayuki Perdizio Sakita, Rodrigo Lassarote Lavall, Andreza de Sousa Andrada, Pradeep Kumar Rohatgi, Merces Coelho da Silva
Summary: This work compared the drying properties and performance of Chia oil and linseed oil as healing agents for self-healing coatings. It found that Chia oil had a faster drying rate and higher polyunsaturated fatty acids content, leading to a slight improvement in self-healing effect in EIS tests.
Article
Chemistry, Physical
Baolei Wang, Zewei Li, Xinru Liu, Lulu Li, Jianxiang Yu, Shuang Li, Gaiping Guo, Dahai Gao, Yuhua Dai
Summary: A novel self-healing epoxy resin was synthesized by introducing flexible molecular chains and disulfide bonds into the cross-linked polymer networks. The self-healing reaction of cracked samples was achieved under mild conditions. The molar ratio of PEA and DTPA strongly influenced the mechanical properties and self-healing performance, with the ratio of 2 showing the best results. The self-healing resin can be used as an organic coating to prolong the service life of conventional epoxy coatings.
Article
Materials Science, Multidisciplinary
Xutong Yang, Xiao Zhong, Junliang Zhang, Junwei Gu
Summary: In this study, a side chain liquid crystal epoxy based on biphenyl mesomorphic unit was successfully synthesized, and a liquid crystal epoxy film with thermal conductivity and self-healing properties was prepared. The liquid crystal epoxy showed high thermal conductivity, excellent self-healing performance, wide service temperature range, and good thermal stability. It is expected to have wide application prospects in the fields of flexible electronic devices and intelligent structures.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Textiles
Hossein Ebrahimnezhad-Khaljiri, Reza Eslami-Farsani
Summary: The study focused on fabricating glass fiber-epoxy self-healable composites with encapsulated healing agent, and investigating the effects of different ratios of encapsulated epoxy and damage forces on their healing ability. Increasing the microcapsules improved healing ability but slightly reduced flexural strength. As damage forces increased, the healing ability decreased, transitioning from matrix cracking to fiber breakage.
JOURNAL OF INDUSTRIAL TEXTILES
(2021)
Article
Polymer Science
Raj Kumar Pittala, Satish B. Ben, Avinash B. Ben
Summary: The structural integrity of micro and nano cracked polymer composites can be re-established through a biologically inspired capsule self-healing system, by encapsulating epoxy resins and amine hardener with different viscosities in a thermoplastic shell. Increasing capsule concentration was found to decrease tensile strength but increase fracture toughness, leading to higher healing efficiency as the capsules content increases.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Chemistry, Applied
Innocent O. Arukalam, Izuchukwu O. Madu, Edith Y. Ishidi
Summary: The study investigated the performance characteristics of Lupinus arboreus gum extract as a self-healing and corrosion inhibition agent in epoxy-based coatings. It was found that the gum extract exhibited remarkable anti-corrosion and barrier properties, effectively healing damaged surfaces. This suggests that Lupinus arboreus gum could be a cost-effective and environmentally friendly option for marine coatings.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Applied
Monica Penas-Caballero, Jesus Martin-Cordon, Violeta Barranco, Juan Carlos Galvan, Marianella Hernandez Santana, Miguel A. Lopez-Manchado, Raquel Verdejo
Summary: An autonomous self-healing polymer coating based on epoxy resin and superabsorbent polymer blend has been developed as an anticorrosion coating. It shows excellent performance in preventing coating delamination, protecting metal from corrosion, and enabling local repair of cracks.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Composites
Wenhu Wan, Rulin Shen, Juntao Tang, Yangbo Xu, Xiangfu Zou, Haibo Guo
Summary: In this study, non-destructive self-healing carbon fiber/epoxy (CF/EP) composites were developed using core-shell nanofibers with healing agent in the core and carbon nanotubes in the shell. The results showed that composites with suitable self-healing components had increased flexural strength, flexural modulus, tensile strength, tensile modulus, and Mode II interlaminar fracture toughness compared to the pristine CF/EP. The composite with 1 wt% CNTs exhibited a healing flexural strength of 93.57% after 24 hours, higher than the initial strength of composites without self-healing components.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Rui Wang, Fei Yu, Hengyu Feng, Zhen Yan, Linghan Xiao, Wei Zhu
Summary: In this study, a microencapsulated self-healing material with epoxy-amine was developed through Pickering emulsion, which showed less impact of factors such as microcapsule size and content on the mechanical properties. The microcapsules with bilayer shell were successfully prepared using two-dimensional materials as stabilizers. The addition of microcapsules slightly affected the mechanical properties of the material, but it still exhibited 89% bending stress and 148% tensile stress repair rate. These materials have great potential applications in engineering technology and other fields.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Hossein Chamkouri, Majid Ahmadlouydarab, Mahyodin Chamkouri, Fatemeh Hosseini Saeidavi
Summary: This study reports an innovative system that utilizes microcapsules embedded in epoxy resin to create a self-healing structure, addressing the issue of structural damage caused by environmental factors such as climate change, temperature fluctuations, and mechanical forces. The microcapsules were shown to have rough surfaces that improve mechanical bonding, and they exhibit good chemical structure and thermal stability.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Polymer Science
Ming-Xuan Li, Min-Zhi Rong, Ming-Qiu Zhang
Summary: This study presents an innovative solution based on mechanochemically initiated reversible cascading variation of metal-ligand complexations, which autonomously increases the crosslinking density of metallopolymer networks and blocks stress-induced tiny fracture precursors from growing, fundamentally enhancing the durability of polymers in service.
CHINESE JOURNAL OF POLYMER SCIENCE
(2021)
Article
Materials Science, Composites
Hua Xiao, Ze Ping Zhang, Zi Xin Huang, Min Zhi Rong, Ming Qiu Zhang
Summary: The study successfully achieved the conflicting goals of high thermal conductivity and high flexibility in composites by using dihydromyricetin and high molecular weight acrylate copolymer as surface modifiers and adhesive in the preparation of boron nitride paper, allowing for the production of flexible electronic components with excellent thermal conductivity and tensile properties.
COMPOSITES COMMUNICATIONS
(2021)
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, Multidisciplinary
Juan Ye, Guanghong Lin, Ziqian Lin, Haoyu Deng, Junjie Huang, Hongping Xiang, Min Zhi Rong, Ming Qiu Zhang
Summary: In this study, a UV-irradiation/thermo dual-induced self-healing polyurethane elastomer was successfully prepared by tuning the UV irradiation intensity, photoinitiator dosage, and content of disulfide compound (SS-MA). This elastomer exhibited high tensile strength and good self-healing capability, making it suitable for applications in smart coatings and other fields.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Polymer Science
Zhi Rong Ou, Wei Li Peng, Min Zhi Rong, Ming Qiu Zhang
Summary: A novel strategy utilizing reversible boronic ester bonds and imine bonds has been proposed for controllable depolymerization and recovery of polymer blends. Through the preparation of reversibly interlocked polymer networks (RILNs) from two preformed crosslinked polymers, a cascading effect between boronic ester bonds and imine bonds is enabled, allowing controlled depolymerization and recovery.
Article
Chemistry, Multidisciplinary
Mei Rui Fu, Yang You, Min Zhi Rong, Ming Qiu Zhang
Summary: The recently developed reversibly interlocked polymer networks are formed by two pre-formed crosslinked polymers containing reversible covalent bonds through topological rearrangements. The critical role of hydrogen bonds between the single networks in the construction of the interlocked networks, along with the dissociation and re-association of reversible covalent bonds, has been revealed. The inter-component hydrogen bonds between interlocked networks are more stable than intra-molecular hydrogen bonds within single networks, and help prevent phase separation and achieve forced miscibility.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Polymer Science
Shujun Tan, Yao Wu, Yang Hou, Haoyu Deng, Xiaoxuan Liu, Shoujuan Wang, Hongping Xiang, Minzhi Rong, Mingqiu Zhang
Summary: This study focuses on improving the toughness of 3D printing resin by modifying waste nitrile rubber powders (WNRP). The results show that this strategy significantly enhances the toughness of the resin while reducing waste.
Article
Polymer Science
Jingqi Ji, Shiwen Huang, Shumei Liu, Yanchao Yuan, Jianqing Zhao, Shijie Zhang
Summary: This study synthesized a novel biobased waterborne epoxy resin with flame retardancy and antibacterial ability, and investigated its application in coatings.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Chemistry, Multidisciplinary
Y. You, M. R. Fu, M. Z. Rong, M. Q. Zhang
Summary: By interlocking thermoresponsive and ultraviolet-responsive networks, the material can have both reversibility and dimensional stability, as well as improved creep resistance. The photo-reversible switch mechanism of the ultraviolet-responsive network allows for repeated releasing and reimposing of constraints on the neighboring thermoresponsive network.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Wan Ting Dai, Zhen Hua Xie, Yu Bin Ke, Yang You, Min Zhi Rong, Ming Qiu Zhang, Chun Yong He, Han Qiu Jiang, Hua Yang
Summary: The significantly improved mechanical properties of reversibly interlocked polymer networks (ILNs) originate from their unique interlocked structure. The study reveals that ILNs can maintain homogeneity and dissipate more mechanical energy through internal friction after stretching. These findings provide guidance for the rational design of high-performance multicomponent polymer materials.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Yanan Huang, Guiqing Dang, Min Zhu, Longfei Fan, Minzhi Rong, Mingqiu Zhang
Summary: Reversible shape memory polymers with a broad melting temperature range were developed to overcome the limitation of existing polymers. The polymers were able to memorize multiple temporary shapes through a thermal programming process. By selectively activating partial melting and recrystallization at different temperatures, the polymers demonstrated reversible triple, quadruple, and quintuple shape memory effects. This research may have significant implications for the application of reversible shape memory polymers.
APPLIED MATERIALS TODAY
(2023)
Article
Materials Science, Composites
Yi Xi Song, Wei Zeng, Min Zhi Rong, Ming Qiu Zhang
Summary: A sunlight self-healing thermoelectric generator that harvests energy from the human body is reported in this work. The self-healing capacity is achieved by using a self-healing polyurethane, and the thermoelectric component is composed of an organic-inorganic composite. The composite film exhibits improved thermoelectric performance and both p-type and n-type films have high healing efficiencies.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Wan Ting Dai, Jiawen Hou, Fenfen Wang, Yang You, Pingchuan Sun, Min Zhi Rong, Ming Qiu Zhang
Summary: Reversibly interlocked polymer networks (RILNs) are formed through topological rearrangement of two cross-linked polymers with reversible covalent bonds. This study employs solid-state nuclear magnetic resonance spectroscopy to investigate the microstructures of RILNs, revealing that macromolecular chains from different subnetworks interlace on the molecular level. The findings provide insights into the authentic microstructures of RILNs and aid in the design of new RILNs.
Article
Chemistry, Multidisciplinary
Guang Sheng Cao, Ze Ping Zhang, Min Zhi Rong, Ming Qiu Zhang
Summary: A novel approach to prepare high-performance continuous regenerated keratin fibers with wool-like structure using cortical cells and linear keratin from wool waste as reinforcement and adhesive was proposed. The regenerated fibers exhibited similar mechanical properties, thermal stability, dyeing property, moisture absorption capability, and antistatic resistance to wool, while containing a low amount of synthetic chemicals.
Article
Chemistry, Multidisciplinary
Sheng Jie Yuan, Zhong Quan Peng, Min Zhi Rong, Ming Qiu Zhang
Summary: A novel strategy based on interlocked polymer networks is proposed to enhance the thermal conduction of liquid crystalline epoxy. The interlocked networks show significantly increased thermal conductivity compared to the parent single-LCE networks. The technology developed in this study has remarkable potential for future applications.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.
