Journal of Composites and Biodegradable Polymers最新文献

{"title":"Polymers As Concrete Healing Materials","authors":"Mesut Gorur","doi":"10.12974/2311-8717.2023.11.08","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.08","url":null,"abstract":"Concrete is commonly used as a supporting material in the construction industry. Although it can withstand heavy loads, it is very brittle and sensitive to crack formation. Earthquakes and other environmental factors may result in the formation of cracks in the concrete structure. Penetration of chloride and atmospheric water with dissolved oxygen and carbon dioxide gasses through these cracks leads to corrosion of rebar (reinforcing steel bars). This paper is a short review of polymeric structures as concrete healing materials.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"44 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139149455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D Printing of Hydrogel/BaTiO3 Composite Scaffolds with Highly Improved Mechanical, Electrical, and Degradable Properties","authors":"Yue Zhang, Jinhan He, Jin Su, Annan Chen, Yinjin Li, Yifei Li, C. Yan, Yusheng Shi","doi":"10.12974/2311-8717.2023.11.07","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.07","url":null,"abstract":"In clinical practice, the restoration of cartilage injury is a tough task. And manufacturing degradable cartilage scaffolds with strong mechanical properties and electrical activity remains a significant issue. In this study, the hydrogel/BaTiO3 composite scaffolds with greatly improved mechanical, electrical, and degradable properties were formed by digital light processing 3D printing. We found that the addition of BaTiO3 powders enabled the significant improvement of the compressive strength (212.8 kPa) and energy absorption (32.0 mJ/m3), which were as three and six times as those of pure hydrogel scaffolds, respectively. Besides, the composite scaffolds showed a voltage output of above 100 mV, which was two orders of magnitude higher than that of pure hydrogel scaffolds. This voltage output allows for the simulation of electrical microenvironment in native tissues that promote cartilage regeneration and remodeling. Finally, the degradation rate of the composite scaffolds reached 7.1% after 14 days of simulated body fluid (SBF) immersion, while that of the pure hydrogel scaffolds was only 2.8%. This study provides insight into the fabrication of high-performance functional scaffolds for treating cartilage defect.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"45 189","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On Demand Degradable h-BN–Fe3O4 Nanocomposite Powders for BNCT Delivery Agents (Focused Mini-Review)","authors":"L. Chkhartishvili","doi":"10.12974/2311-8717.2023.11.06","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.06","url":null,"abstract":"This mini-review is focused on the nanopowder composite material h-BN–Fe3O4 (hexagonal boron nitride–magnetite) developed by the author’s research group in recent years. Effective methods of their synthesis, structural and morphological characteristics, and physical properties are briefly described. They show that h-BN–Fe3O4 composite nanoparticles can serve as boron isotope 10B delivery agents in BNCT (Boron-Neutron-Capture-Therapy) having high medical efficacy with controlled delivery, low toxicity and on-demand degradability.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"13 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139156645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Timeliness of Cold Plasma Treatment on Surface Modification of Polylactic Acid Fibers","authors":"Yingxuan Chen, Haiyan Liu, Shuni Ying, Huihuang Ma, Jianfei Gao, Xiao-Min Zhou","doi":"10.12974/2311-8717.2023.11.05","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.05","url":null,"abstract":"Polylactic acid (PLA) fiber is a promising material due to its biodegradability, excellent mechanical properties, and good biocompatibility. However, its surface is chemically inert and has poor interfacial compatibility with gases due to a low number of polar groups. To address this issue, this study utilized cold plasma and solution wet pretreatment with varying pH levels to modify the surface of PLA fibers. The use of solution wet pretreatment helped mitigate the negative effects of plasma treatment on the timeliness, which improved the long-term stability of the PLA fibers surface properties. These modifications increased the suitability of the material for various applications. The surface of PLA fibers was modified using cold plasma and wet pretreatment with pH solutions of varying degrees. The surface chemical composition and hydrophilicity of modified fibers remained relatively stable for up to 120 days. Conversely, unpretreated fibers reverted to their original chemically inert state after 14 days.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"85 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studies on Aging Behavior and Degradation Mechanism of Raw EPDM Rubber Under γ-Ray Irradiation","authors":"Xin-yi Du, Sheng-nan Jiang, Zhao Qing, Meng-yuan Zhu, Hong-zhen Wang, Cun-guo Wang, Ai-hua He, Ye Xin, Zhao Bo","doi":"10.12974/2311-8717.2023.11.04","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.04","url":null,"abstract":"The aging behavior and mechanism of EPDM rubber were investigated by conducting different doses of γ-rays irradiation in raw EPDM rubber. A series of characterization methods such as Mooney viscosity, molecular weight and its distribution, rubber processing analysis, infrared spectroscopy analysis et al. were carried out. Structure and modifications of the raw EPDM rubber were tested under different irradiation doses. The results showed that the Mooney viscosity and molecular weight of EPDM rubber showed a significant decrease with increasing irradiation dose. The gel content and glass transition temperature increased gradually. As strain rose, the energy storage modulus diminished. The loss factor decreased at first and then increased with increasing strain during irradiation aging.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"21 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138977135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of Electrical and Optical Properties of Polyvinylidene Fluoride Samples by Cerium Sulfate Addition","authors":"E. A. Falcão, M. Amorim, E. Botero, N. Domingues, I. A. Santos, A. Rinaldi","doi":"10.12974/2311-8717.2023.11.02","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.02","url":null,"abstract":"In the present work, polyvinylidene fluoride's (PVDF) electrical and optical properties have been studied as a function of cerium sulfate tetrahydrate called Ce(SO4)2. Experimental result shows that the relative percentage of β phase (Fβ%) increases by almost 55 % with Ce(SO4)2 addition in the polymeric matrix. The dielectric permittivity measurements presented an increase, at 1 KHz, of 62% up to 0.8% of Ce(SO4)2 content. This increase was attributed to the Maxwell-Wagner effect. The UV-Vis measurements presented some changes at the UV region due to Ce(SO4)2. The fluorescence measurements showed an enhancement in the fluorescence peak of almost 130 % for the PVDF/Ce(SO4)2 0.8% and a blue shift of the maximum fluorescence intensity. These results show that PVDF/Ce(SO4)2 sample is a potential candidate for optical, photonic, electrical, and electronic applications.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127260982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transfer Printing Process of Bio-Based Nylon 56 and Cotton Interwoven Fabrics","authors":"Runshan Chu, Yanbo Zhang, Ling Li, T. Xing, Guoqing Chen","doi":"10.12974/2311-8717.2023.11.01","DOIUrl":"https://doi.org/10.12974/2311-8717.2023.11.01","url":null,"abstract":"Using Annosol Reactive Blue DS dye as the colorant, an inkjet printing ink was developed, and its rheological properties and dynamic surface tension were evaluated for its use in dry heat transfer printing of patterns on bio-based nylon 56 and cotton interwoven fabrics. In particular, the effects of the dry heat transfer printing parameters on the printing properties of the ink on bio-based nylon 56 and cotton interwoven fabrics were investigated. The results revealed that the optimal parameters of the dry heat transfer printing of the custom-produced ink on bio-based nylon 56 and cotton interwoven fabrics are as follows: hot pressing at 130 °C under 3MPa pressure, steamer at 102 °C, and saturated steaming for 15min. The color fastness to both soap wash and rubbing of the bio-based nylon 56 and cotton interwoven fabrics dyed with Annosol Reactive Blue DS through dry heat transfer printing were determined to be of grades 3–4 and above, meeting the color fastness requirements of printed fabrics.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127002837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low Velocity Impact Evaluation of Self-Healing Sandwich Structures","authors":"A. Pedroso, R. Campilho, R. Rocha, M. Gomes","doi":"10.12974/2311-8717.2022.10.04","DOIUrl":"https://doi.org/10.12974/2311-8717.2022.10.04","url":null,"abstract":"One of the main problems within aeronautical industries is the collision, in low-flight, take-off and landing, between the fuselage of the aircraft and birds. This occurrence results in irreversible damage and consequent repairs of the composite material that composes the aircraft structure. The focus of this work is to find a solution that drastically reduces the lack of residual impact strength of composite materials, combining laminates of hybrid fibre fabrics from carbon with Dyneema® with a self-healing elastomeric adhesive Reverlink™ in a composite sandwich with a honeycomb core. Comparison is undertaken with a more traditional approach that considers the epoxy Araldite® 2015 adhesive instead. Low-velocity impact tests were made, and the experimental results enabled the comparison of both solutions. The test trials showed an improved impact behaviour of the Reverlink™ solution and regeneration after the first impact. Thus, the proposed solution can be considered instead of traditional sandwich joining with epoxy adhesives.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125557593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrodeposition of One-Dimensional Nanostructures: Environmentally Friendly Method","authors":"V. O. S. Sousa Neto, G. D. Saraiva, A. D. de Castro, P.T. Cavalcante Freire, R. D. do Nascimento","doi":"10.12974/2311-8717.2022.10.03","DOIUrl":"https://doi.org/10.12974/2311-8717.2022.10.03","url":null,"abstract":"During the past decade, nanotechnology has become an active field of research because of its huge potential for a variety of applications. When the size of many established, well-studied materials is reduced to the nanoscale, radically improved or new surprising properties often emerge. There are mainly four types of nanostructures: zero, one, two and three dimensional structures. Among them, one-dimensional (1D) nanostructures have been the focus of quite extensive studies worldwide, partially because of their unique physical and chemical properties. Compared to the other three dimensional structures, the first characteristic of 1D nanostructure is its smaller dimension structure and high aspect ratio, which could efficiently transport electrical carriers along one controllable direction; as a consequence they are highly suitable for moving charges in integrated nanoscale systems. The second characteristic of 1D nanostructure is its device function, which can be exploited as device elements in many kinds of nanodevices. Indeed it is important to note that superior physical properties including superconductivity, enhanced magnetic coercivity and the unusual magnetic state of some 1D nanostructures have been theoretically predicted and some of them have already been confirmed by experiments. In order to attain the potential offered by 1D nanostructures, one of the most important issues is how to synthesize 1D nanostructures in large quantities with a convenient method. Many synthetic strategies, such as solution or vapor-phase approaches, template-directed methods, electrospinning techniques, solvothermal syntheses, self-assembly methods, etc., have been developed to fabricate different classes of 1D nanostructured materials, including metals, semiconductors, functional oxides, structural ceramics, polymers and composites. All the methods can be divided into two categories: those carried out in a gas phase (i.e., “dry processes”) and those carried out in a liquid phase (i.e., “wet processes”). The dry processes include, for example, techniques such as chemical vapor deposition (CVD), physical vapor deposition (PVD), pulse laser deposition (PLD), metal-organic chemical vapor deposition (MOCVD), and molecular beam epitaxy (MBE). In general, these gas phase processes require expensive and specialized equipments. The wet processes include sol-gel method, hydrothermal method, chemical bath deposition (CBD) and electrodeposition. Among the above mentioned methods, electrodeposition has many advantages such as low cost, environmentally friendly, high growth rate at relatively low temperatures and easier control of shape and size. Generally, there are two strategies to produce the 1D nanostructures through the electrochemical process. They are the template-assisted electrodeposition, and the template-free electrodeposition. In this chapter, we will approach the recent progress and offer some prospects of future directions in electrodeposition of 1D nanost","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114703474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface Treatment of Polylactic Acid Fiber by Starch Nanocrystals and Interface Modification of Polylactic Acid Fiber-Reinforced Starch Composites","authors":"Xiaodong Zhou, M. Sun, Huihuang Ma, S. Yang, Ying-Ju Chen, Haiyan Liu","doi":"10.12974/2311-8717.2022.10.02","DOIUrl":"https://doi.org/10.12974/2311-8717.2022.10.02","url":null,"abstract":"The surface of polylactic acid fiber (PLAF) was treated with self - manufactured starch nanocrystals (SNCs) to improve its interfacial adhesion with the starch matrix. Determination of optimum dispersion conditions of SNCs dispersion by transmittance. The effects of direct oscillatory deposition, chemical grafting SNCs modification, and SNCs dispersion concentration on the surface treatment effect of PLAF and its interfacial bonding with starch matrix were investigated. The results showed that the SNCs were successfully introduced into the PLAF surface, moreover, the modifying effect of the chemical grafted SNCs was better than the direct oscillatory deposition, the distribution of SNCs particles was more uniform on the fiber surface, strong chemical bonding to the fiber surface, make up for the surface damage of the fibers caused by aminolysis. At the SNCs dispersion concentration of 10 g/L, the PLAF tensile strength could be maintained at 582 MPa, a large amount of starch was evenly attached to the surface after pulling out. It showed that a strong interface bond with the starch matrix, the highest IFSS value was 2.57 MPa and the increase was by about 63 %. Therefore, the introduction of SNCs for interfacial modification of PLAF is of great significance and deserves further exploration.","PeriodicalId":271349,"journal":{"name":"Journal of Composites and Biodegradable Polymers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133630920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}