Polymers最新文献_第8页

The Synthesis of a New Glycoluryl-Melamine-Formaldehyde Polymer under the Action of HEDP and the Investigation of the Content of Methylol Groups and Free Formaldehyde. 在 HEDP 作用下合成一种新的甘氨酰-甲胺-甲醛聚合物以及对甲基醇基团和游离甲醛含量的研究。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-12 DOI: 10.3390/polym16202877

Nurdana Kanasheva, Arthur Ukhov, Victor S Malkov, Alexander Gubankov, Samal Sergazina, Manar A Issabayeva, Togzhan Mashan, Ainagul Kolpek, Roza Ryskaliyeva, Abdigali Bakibaev, Rakhmetulla Yerkassov

{"title":"The Synthesis of a New Glycoluryl-Melamine-Formaldehyde Polymer under the Action of HEDP and the Investigation of the Content of Methylol Groups and Free Formaldehyde.","authors":"Nurdana Kanasheva, Arthur Ukhov, Victor S Malkov, Alexander Gubankov, Samal Sergazina, Manar A Issabayeva, Togzhan Mashan, Ainagul Kolpek, Roza Ryskaliyeva, Abdigali Bakibaev, Rakhmetulla Yerkassov","doi":"10.3390/polym16202877","DOIUrl":"https://doi.org/10.3390/polym16202877","url":null,"abstract":"This study outlines a method for preparing a complex involving glycoluril and melamine (GU-ME). The structure of the resultant complex was analyzed using IR and NMR spectroscopy. In the subsequent phase, the polymer GUMEFA was derived from the resultant complex, employing hydroxyethylidene diphosphonic acid (HEDP) as a sustainable plasticizer, with a proposed chemical mechanism for its formation. The molecular weight of the resulting GUMEFA was analyzed, and the formation chemistry was proposed. GUMEFA was characterized, and its free formaldehyde and methylol group contents were investigated. It was observed that GUMEFA prepared with HEDP contained approximately 1.15-1.34 wt.% free formaldehyde and 1.56-0.54 wt.% methylol groups. These findings provide valuable insights for developing resins of different compositions and applications, thereby paving the way for producing composite materials with tailored properties.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyurethanes Synthesized with Blends of Polyester and Polycarbonate Polyols-New Evidence Supporting the Dynamic Non-Covalent Exchange Mechanism of Intrinsic Self-Healing at 20 °C. 用聚酯和聚碳酸酯多元醇混合物合成的聚氨酯--支持 20 °C 时内在自愈合的非共价动态交换机制的新证据。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-12 DOI: 10.3390/polym16202881

Yuliet Paez-Amieva, Noemí Mateo-Oliveras, José Miguel Martín-Martínez

{"title":"Polyurethanes Synthesized with Blends of Polyester and Polycarbonate Polyols-New Evidence Supporting the Dynamic Non-Covalent Exchange Mechanism of Intrinsic Self-Healing at 20 °C.","authors":"Yuliet Paez-Amieva, Noemí Mateo-Oliveras, José Miguel Martín-Martínez","doi":"10.3390/polym16202881","DOIUrl":"https://doi.org/10.3390/polym16202881","url":null,"abstract":"Polyurethanes (PUs) synthesized with blends of polycarbonate and polyester polyols (CD+PEs) showed intrinsic self-healing at 20 °C. The decrease in the polycarbonate soft segments content increased the self-healing time and reduced the kinetics of self-healing of the PUs. The percentage of C-O species decreased and the ones of C-N and C=O species increased by increasing the polyester soft segments in the PUs, due to higher micro-phase separation. All PUs synthetized with CD+PE blends exhibited free carbonate species and interactions between the polycarbonate and polyester soft segments to a somewhat similar extent in all PUs. By increasing the polyester soft segments content, the storage moduli of the PUs decreased and the tan delta values increased, which resulted in favored polycarbonate soft segments interactions, and this was related to slower kinetics of self-healing at 20 °C. Although the PU made with a mixture of 20 wt.% CD and 80 wt.% PE showed cold crystallization and important crystallinity of the soft segments, as well as high storage moduli, the intercalation of a small amount of polycarbonate soft segments disturbed the interactions between the polyester soft segments, so it exhibited self-healing at 20 °C. The self-healing of the PUs was attributed to the physical interactions between polycarbonate soft segments themselves and with polyester soft segments, and, to a minor extent, to the mobility of the polymeric chains. Finally, the PUs made with 40 wt.% or more polyester polyol showed acceptable mechanical properties.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511022/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in Polymer Biomaterials as Scaffolds for Corneal Endothelium Tissue Engineering. 作为角膜内皮组织工程支架的聚合物生物材料的进展。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-12 DOI: 10.3390/polym16202882

Kevin Y Wu, Myriam Belaiche, Ying Wen, Mazen Y Choulakian, Simon D Tran

{"title":"Advancements in Polymer Biomaterials as Scaffolds for Corneal Endothelium Tissue Engineering.","authors":"Kevin Y Wu, Myriam Belaiche, Ying Wen, Mazen Y Choulakian, Simon D Tran","doi":"10.3390/polym16202882","DOIUrl":"https://doi.org/10.3390/polym16202882","url":null,"abstract":"Corneal endothelial dysfunction is a leading cause of vision loss globally, frequently requiring corneal transplantation. However, the limited availability of donor tissues, particularly in developing countries, has spurred on the exploration of tissue engineering strategies, with a focus on polymer biomaterials as scaffolds for corneal endotlhelium regeneration. This review provides a comprehensive overview of the advancements in polymer biomaterials, focusing on their role in supporting the growth, differentiation, and functional maintenance of human corneal endothelial cells (CECs). Key properties of scaffold materials, including optical clarity, biocompatibility, biodegradability, mechanical stability, permeability, and surface wettability, are discussed in detail. The review also explores the latest innovations in micro- and nano-topological morphologies, fabrication techniques such as electrospinning and 3D/4D bioprinting, and the integration of drug delivery systems into scaffolds. Despite significant progress, challenges remain in translating these technologies to clinical applications. Future directions for research are highlighted, including the need for improved biomaterial combinations, a deeper understanding of CEC biology, and the development of scalable manufacturing processes. This review aims to serve as a resource for researchers and clinician-scientists seeking to advance the field of corneal endothelium tissue engineering.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511139/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formulation-Property Effects in Novel Injectable and Resilient Natural Polymer-Based Hydrogels for Soft Tissue Regeneration. 用于软组织再生的新型可注射弹性天然聚合物水凝胶的配方-性能效应

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-12 DOI: 10.3390/polym16202879

Daniella Goder Orbach, Ilana Roitman, Geffen Coster Kimhi, Meital Zilberman

{"title":"Formulation-Property Effects in Novel Injectable and Resilient Natural Polymer-Based Hydrogels for Soft Tissue Regeneration.","authors":"Daniella Goder Orbach, Ilana Roitman, Geffen Coster Kimhi, Meital Zilberman","doi":"10.3390/polym16202879","DOIUrl":"https://doi.org/10.3390/polym16202879","url":null,"abstract":"The development of injectable hydrogels for soft tissue regeneration has gained significant attention due to their minimally invasive application and ability to conform precisely to the shape of irregular tissue cavities. This study presents a novel injectable porous scaffold based on natural polymers that undergoes in situ crosslinking, forming a highly resilient hydrogel with tailorable mechanical and physical properties to meet the specific demands of soft tissue repair. By adjusting the formulation, we achieved a range of stiffness values that closely mimic the mechanical characteristics of native tissues while maintaining very high resilience (>90%). The effects of gelatin, alginate, and crosslinker concentrations, as well as porosity, on the hydrogel's properties were elucidated. The main results indicated a compression modulus range of 2.7-89 kPa, which fits all soft tissues, and gelation times ranging from 5 to 30 s, which enable the scaffold to be successfully used in various operations. An increase in gelatin and crosslinker concentrations results in a higher modulus and lower gelation time, i.e., a stiffer hydrogel that is created in a shorter time. In vitro cell viability tests on human fibroblasts were performed and indicated high biocompatibility. Our findings demonstrate that these injectable hydrogel scaffolds offer a promising solution for enhancing soft tissue repair and regeneration, providing a customizable and resilient framework that is expected to support tissue integration and healing with minimal surgical intervention.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511563/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Source, Extraction, Properties, and Multifunctional Applications of Pectin: A Short Review. 果胶的来源、提取、特性和多功能应用：简评。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-12 DOI: 10.3390/polym16202883

Le Yi, Lifeng Cheng, Qi Yang, Ke Shi, Fengbo Han, Wei Luo, Shengwen Duan

{"title":"Source, Extraction, Properties, and Multifunctional Applications of Pectin: A Short Review.","authors":"Le Yi, Lifeng Cheng, Qi Yang, Ke Shi, Fengbo Han, Wei Luo, Shengwen Duan","doi":"10.3390/polym16202883","DOIUrl":"https://doi.org/10.3390/polym16202883","url":null,"abstract":"Pectin, a heteropolysaccharide derived from plant cell walls, is essential in the food, pharmaceutical, and environmental industries. Currently, citrus and apple peels are the primary sources for commercial pectin production. The yield and quality of pectin extracted from various plant sources significantly differ based on the extraction methods employed, which include physical, chemical, and biological processes. The complex structures of pectin, composed of polygalacturonic acid and rhamnogalacturonan, influence its physicochemical properties and, consequently, its functionality. As a common polysaccharide, pectin finds applications across multiple sectors. In the food industry, it acts as a gelling agent and a packaging material; in pharmaceuticals, it is utilized for drug delivery and wound healing. Environmentally, pectin contributes to wastewater treatment by adsorbing pollutants. Current research focuses on alternative sources, sustainable extraction methods, and multifunctional applications of pectin. Ongoing studies aim to enhance extraction technologies and broaden the applications of pectin, thereby supporting sustainable development goals.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511015/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication and Properties of Hydrogel Dressings Based on Genipin Crosslinked Chondroitin Sulfate and Chitosan. 基于吉尼平交联硫酸软骨素和壳聚糖的水凝胶敷料的制造与性能

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-11 DOI: 10.3390/polym16202876

Ling Wang, Xiaoyue Ding, Xiaorui He, Ning Tian, Peng Ding, Wei Guo, Oseweuba Valentine Okoro, Yanfang Sun, Guohua Jiang, Zhenzhong Liu, Armin Shavandi, Lei Nie

{"title":"Fabrication and Properties of Hydrogel Dressings Based on Genipin Crosslinked Chondroitin Sulfate and Chitosan.","authors":"Ling Wang, Xiaoyue Ding, Xiaorui He, Ning Tian, Peng Ding, Wei Guo, Oseweuba Valentine Okoro, Yanfang Sun, Guohua Jiang, Zhenzhong Liu, Armin Shavandi, Lei Nie","doi":"10.3390/polym16202876","DOIUrl":"https://doi.org/10.3390/polym16202876","url":null,"abstract":"Multifunctional hydrogel dressings remain highly sought after for the promotion of skin wound regeneration. In the present study, multifunctional CHS-DA/HACC (CH) hydrogels with an interpenetrated network were constructed using hydroxypropyl trimethyl ammonium chloride modified chitosan (HACC) and dopamine-modified chondroitin sulfate (CHS-DA), using genipin as crosslinker. The synthesis of HACC and CHS-DA was effectively confirmed using Fourier transform infrared (FT-IR) analysis and 1H nuclear magnetic resonance (1H NMR) spectroscopy. The prepared CH hydrogels exhibited a network of interconnected pores within the microstructure. Furthermore, rheological testing demonstrated that CH hydrogels exhibited strong mechanical properties, stability, and injectability. Further characterization investigations showed that the CH hydrogels showed favorable self-healing and self-adhesion properties. It was also shown that increasing HACC concentration ratio was positively correlated with the antibacterial activity of CH hydrogels, as evidenced by their resistance to Escherichia coli and Staphylococcus aureus. Additionally, Cell Counting Kit-8 (CCK-8) tests, fluorescent images, and a cell scratch assay demonstrated that CH hydrogels had good biocompatibility and cell migration ability. The multifunctional interpenetrated network hydrogels were shown to have good antibacterial properties, antioxidant properties, stable storage modulus and loss modulus, injectable properties, self-healing properties, and biocompatibility, highlighting their potential as wound dressings in wound healing applications.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511540/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Properties of Seed Cake Biomasses and Their Valorisation by Torrefaction. 种子饼生物质的热性能及其通过热处理的增值作用

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-11 DOI: 10.3390/polym16202872

Elena Butnaru, Elena Stoleru, Daniela Ioniță, Mihai Brebu

{"title":"Thermal Properties of Seed Cake Biomasses and Their Valorisation by Torrefaction.","authors":"Elena Butnaru, Elena Stoleru, Daniela Ioniță, Mihai Brebu","doi":"10.3390/polym16202872","DOIUrl":"https://doi.org/10.3390/polym16202872","url":null,"abstract":"Seed cakes, by-products from the cold press extraction of vegetable oils, are valuable animal feed supplements due to their high content of proteins, carbohydrates, and minerals. However, the presence of anti-nutrients, as well as the rancidification and development of aflatoxins, can impede their intended use, requiring alternative treatment and valorisation methods. Thermal treatment as a procedure for the conversion of seed cakes from walnuts, hemp, pumpkin, flax, and sunflower into valuable products or energy has been investigated in this paper. Thermogravimetry shows the particular behaviour of seed cakes, with several degradation stages at around 230-280 and 340-390 °C, before and after the typical degradation of cellulose. These are related to the volatilisation of fatty acids, which are either free or bonded as triglycerides, and with the thermal degradation of proteins. Torrefaction at 250 °C produced ~75-82 wt% solids, with high calorific values of 24-26 kJ/g and an energy yield above 90%. The liquid products have a complex composition, with most parts of the compounds partitioning between the aqueous phase (strongly dominant) and the oily one (present in traces). The structural components of seed cakes (hemicelluloses, cellulose, and lignin) produce acetic acid, hydroxy ketones, furans, and phenols. In addition to these, most compounds are nitrogen-containing aromatic compounds from the degradation of protein components, which are highly present in seed cakes.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scaling Relationships of the Structural and Rheological Behavior of Tadpole Polymer Chains in Dilute Solution Systems Using Brownian Dynamics Simulations. 利用布朗动力学模拟稀溶液体系中蝌蚪状聚合物链的结构和流变行为的比例关系。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-11 DOI: 10.3390/polym16202871

Chaehyun Cho, Jun Mo Kim

{"title":"Scaling Relationships of the Structural and Rheological Behavior of Tadpole Polymer Chains in Dilute Solution Systems Using Brownian Dynamics Simulations.","authors":"Chaehyun Cho, Jun Mo Kim","doi":"10.3390/polym16202871","DOIUrl":"https://doi.org/10.3390/polym16202871","url":null,"abstract":"Tadpole polymers, also known as lasso polymers, feature molecular structures that combine a single ring with a single linear side branch, leading to distinct conformational, dynamical, and rheological characteristics compared to their corresponding counterparts, particularly pure linear and pure ring polymers. To elucidate the mechanisms underlying these distinctive behaviors, comprehensive mesoscopic Brownian dynamics (BD) simulations of dilute solution systems of tadpole polymers were conducted using a bead-rod chain model under both equilibrium and flow conditions. Three types of tadpole polymer chains were prepared by varying the ring-to-linear ratio within the tadpole chain and comparing them with the corresponding linear and ring chains. Depending on this ratio, tadpole polymer chains exhibit entirely different structural properties and rotational dynamics, both in equilibrium and under shear flow. As the linear proportion within the tadpole chain increased, the structural, dynamic, and rheological properties of the tadpole polymer chains became more similar to those of pure linear polymers. Conversely, with an increasing ring proportion, these properties began to resemble those of pure ring polymers. Based on these observed tendencies, a simple general scaling expression is proposed for tadpole polymer properties that integrates scaling expressions for both pure linear and pure ring polymers. Our results indicate that the conformational, dynamic, and rheological properties of tadpole polymers, as predicted by these simple scaling expressions, are in good agreement with the simulated values, a result we consider statistically significant.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510819/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

"Grafting-from" and "Grafting-to" Poly(N-isopropyl acrylamide) Functionalization of Glass for DNA Biosensors with Improved Properties. 玻璃的 "从接枝 "和 "接枝到 "聚（N-异丙基丙烯酰胺）功能化，用于改进 DNA 生物传感器的性能。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-11 DOI: 10.3390/polym16202873

Pauline Skigin, Perrine Robin, Alireza Kavand, Mounir Mensi, Sandrine Gerber-Lemaire

{"title":"\"Grafting-from\" and \"Grafting-to\" Poly(N-isopropyl acrylamide) Functionalization of Glass for DNA Biosensors with Improved Properties.","authors":"Pauline Skigin, Perrine Robin, Alireza Kavand, Mounir Mensi, Sandrine Gerber-Lemaire","doi":"10.3390/polym16202873","DOIUrl":"https://doi.org/10.3390/polym16202873","url":null,"abstract":"Surface-based biosensors have proven to be of particular interest in the monitoring of human pathogens by means of their distinct nucleic acid sequences. Genosensors rely on targeted gene/DNA probe hybridization at the surface of a physical transducer and have been exploited for their high specificity and physicochemical stability. Unfortunately, these sensing materials still face limitations impeding their use in current diagnostic techniques. Most of their shortcomings arise from their suboptimal surface properties, including low hybridization density, inadequate probe orientation, and biofouling. Herein, we describe and compare two functionalization methodologies to immobilize DNA probes on a glass substrate via a thermoresponsive polymer in order to produce genosensors with improved properties. The first methodology relies on the use of a silanization step, followed by PET-RAFT of NIPAM monomers on the coated surface, while the second relies on vinyl sulfone modifications of the substrate, to which the pre-synthetized PNIPAM was grafted to. The functionalized substrates were fully characterized by means of X-ray photoelectron spectroscopy for their surface atomic content, fluorescence assay for their DNA hybridization density, and water contact angle measurements for their thermoresponsive behavior. The antifouling properties were evaluated by fluorescence microscopy. Both immobilization methodologies hold the potential to be applied to the engineering of DNA biosensors with a variety of polymers and other metal oxide surfaces.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510813/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Thin Ultra-High-Molecular-Weight Polyethylene Coatings to Reduce Friction in Frost-Resistant Rubbers. 使用超高分子量聚乙烯薄涂层减少抗冻橡胶的摩擦力。

IF 4.7 3区工程技术

Polymers Pub Date : 2024-10-11 DOI: 10.3390/polym16202870

Elena Torskaya, Ivan Shkalei, Fedor Stepanov, Yulia Makhovskaya, Afanasy Dyakonov, Natalia Petrova

{"title":"Using Thin Ultra-High-Molecular-Weight Polyethylene Coatings to Reduce Friction in Frost-Resistant Rubbers.","authors":"Elena Torskaya, Ivan Shkalei, Fedor Stepanov, Yulia Makhovskaya, Afanasy Dyakonov, Natalia Petrova","doi":"10.3390/polym16202870","DOIUrl":"https://doi.org/10.3390/polym16202870","url":null,"abstract":"Frost-resistant rubbers retain their highly elastic properties over a wide temperature range. They are used in various friction units (e.g., seals), but their high friction coefficient and low wear resistance lead to the need for frequent replacement. In this paper, we propose applying thin (several hundred microns) UHMWPE coatings to formed rubber rings. The application technology depends on the required coating thickness. Friction tests of the coatings and pure UHMWPE were performed using the ball-on-disk (unidirectional sliding) scheme for various loads and velocities. In the experiments, the friction coefficients and temperatures near the contact area were determined. Friction tracks were studied using microscopy methods. The sliding contact of the ball and the two-layer material was modeled to obtain the dependences of the deformation component of friction on the sliding velocity for coatings of different thicknesses. UHMWPE is sensitive to frictional heating, so the thermal problem of determining the temperature in the contact area was also solved. It is shown that the minimum friction coefficient occurs for coatings with a thickness of 600 μm. At the same time, in the case of the 300 μm coating, the surface of the friction track is practically no different from the initial one. Thus, the studied combination of polymers provides antifrictional properties and wear resistance to the surface layer while maintaining the damping properties of rubber.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511045/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0