{"title":"Synergistic anti-reversion effects of bis-citraconimides and HTS in natural rubber vulcanizates: A comparative study","authors":"Jinsen Lan, Zhaohui Chen, Jie Yao","doi":"10.1177/00952443251356818","DOIUrl":"https://doi.org/10.1177/00952443251356818","url":null,"abstract":"This study investigates the synergistic effects of novel citraconimide-based additives, N,N'-p-phenylene-biscitraconimide (BCmB) and bis(2-citraconimide phenyl) disulfide (BCoPD), combined with hexamethylene-1,6-bis(thiosulfate) disodium salt (HTS) in natural rubber (NR)/copper-plated steel wire composites typically utilized in radial tire applications. Both additives were designed and synthesized based on the structural insights from the commercial anti-reversion agent 1,3-bis(citraconimidomethyl)benzene (BCDB). The curing characteristics, crosslinking network structure, mechanical properties, thermal oxidative stability, heat build-up, dynamic mechanical properties, and adhesion strength of NR compounds with these additives were comprehensively analyzed. Quantum chemical calculations and kinetic analyses elucidated the reaction mechanisms and reactivity patterns during vulcanization and over-vulcanization processes. Results indicate that BCmB and BCoPD significantly enhance the overall crosslink density, adhesion strength, and initial mechanical performance compared to BCDB. BCoPD, in particular, provides superior adhesion to copper-plated steel wire through both enhanced crosslinking density and direct interfacial bonding facilitated by disulfide linkages. Although BCDB demonstrated superior long-term anti-reversion performance due to its persistent reactive sites enabling Diels–Alder reactions, BCoPD exhibited the best overall adhesion and aging resistance. Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) confirmed cohesive failure within the rubber matrix, indicative of strong interfacial adhesion. This research presents novel citraconimide-based additives as promising materials for achieving improved tire performance, durability, and sustainability.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"57 7","pages":"1308-1340"},"PeriodicalIF":0.0,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894788","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":"Preparation of new polyols containing phosphorus and nitrogen structure, autocatalysis and flame retardant effect and their influence on the property of polyurethane foam","authors":"Xinyu Xu, Xuan Zhao, Shuai Wang, Yuyuan Deng","doi":"10.1177/00952443251355077","DOIUrl":"https://doi.org/10.1177/00952443251355077","url":null,"abstract":"A novel polyol (Poly-PDT) containing phosphorus and nitrogen was synthesized from Phenyl phosphoryl dichloride (PPDC), dipropylene glycol (DPG), and Triethanolamine (TEA) by condensation polymerization. Poly-PDT and polymethylene polyphenyl polyisocyanate (PM-200) with different ratios were prepared into RPUF-PNs. The tertiary amine in the Poly-PDT structure initiates an autocatalytic operation. This process gradually enlarges the bubble pore structure of RPUF-PNs. As a result, the density of RPUF-PNs decreases, impacting their mechanical properties. The test results indicate that due to the nitrogen-phosphorus synergistic effect of Poly PDT, the flame retardant performance of polyurethane materials can be significantly improved. The LOI of RPUF-PN50 can reach 23.3%. The materials tested with conical calorimeters test (CCT) show significant improvements in combustion properties. The heat release rate (HRR) curve and the total heat release rate (THR) curve for the sample containing Poly-PDT was lower than the blank sample, RPUF-PN40 showed the lowest peak heat release rate at 126 Kw/m 2 , representing an approximate 48% decrease compared to RPUF and RPUF-PNs. These improvements are due to an increased crosslinking density and a synergistic flame retardant effect from nitrogen-phosphorus. This enhances the ability of RPUF-PNs to obstruct gases after combustion. Moreover, it improves the matrix carbon burning capacity and strengthens the carbon layer of RPUF-PNs.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147382072","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}
Christine Rabello Nascimento, Daniele Rosendo de Lima, Janaina Fernandes Moreno de Almeida, Ana Maria Furtado de Sousa, Cristiane Xavier da Silva Campos, Fernando Reis da Cunha, Ana Lúcia Nazareth da Silva
{"title":"Characterization of fluoroelastomers compounds by ATR-FTIR","authors":"Christine Rabello Nascimento, Daniele Rosendo de Lima, Janaina Fernandes Moreno de Almeida, Ana Maria Furtado de Sousa, Cristiane Xavier da Silva Campos, Fernando Reis da Cunha, Ana Lúcia Nazareth da Silva","doi":"10.1177/00952443241283941","DOIUrl":"https://doi.org/10.1177/00952443241283941","url":null,"abstract":"Fluoroelastomers (FKM) are used to manufacture seals and other rubber devices that can withstand harsh operating conditions, including aggressive media and extreme low and high temperatures. Even though nuclear magnetic resonance, Fourier-transform infrared spectroscopy (FTIR), and chromatographic techniques have been extensively used in the characterization of raw FKM molecules, the identification of cured compounds entails a characterization method that is able to overcome the complexity related to this kind of structure. In this sense, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy can outperform other characterization techniques because it does not require solubilization or any special preparation of the sample. In this study, 10 FKM compounds were produced in this study utilizing four commercial types of FKM and the fillers carbon black, barium sulfate, and iron oxide. All unfilled-FKM (as received) and their compounds were analyzed by ATR-FTIR with germanium crystal. Between 15 and 25 analyses were performed for all each FKM type sample and their respective compounds. All spectra were analyzed, and the bands were assigned. Findings regarding the interference of the fillers in the spectra were also reported. From relationships between the height of the spectral zones and the bands at 1397 and 1428 cm<jats:sup>−1</jats:sup>, it was possible to distinguish all sample compositions of FKM types 1, 2, 3, and 5. This study demonstrates that ATR-FTIR has the potential to be utilized as a technique to detect the type of FKM compounds, an important rubber used in harsh industrial applications. Replacing carbon with BaSO<jats:sub>4</jats:sub> reduces the tensile at 50% strain of FKM types 1 and 2 composites. FKM types 3 and 5 composites filled with 30 phr of carbon black have a higher tensile at 50% strain than those of FKM type 1.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176207","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":"Patents for JEP 56 (6)","authors":"","doi":"10.1177/00952443241278071","DOIUrl":"https://doi.org/10.1177/00952443241278071","url":null,"abstract":"","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176208","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":"Free vibration analysis of an O-pattern graphene reinforced axial functionally graded polymer matrix nano-composite non-uniform beam","authors":"Amit Kumar Gantayat, Mihir Kumar Sutar, Jyoti Ranjan Mohanty, Sarojrani Pattnaik","doi":"10.1177/00952443241281986","DOIUrl":"https://doi.org/10.1177/00952443241281986","url":null,"abstract":"Recently, the demand for nanocomposites in the form of functionally graded materials (FGM) has increased because of their improved weight-to-stiffness ratios, less delamination effects, and ability to have desired qualities at the right location. Additionally, compared to typical composites, static qualities like strength and elasticity are superior. In this research work, a model for an axially graphene-reinforced functionally graded polymer matrix nanocomposite non-uniform beam is prepared, to obtain the dynamic behavior of the beam in form of its Natural Frequencies. Along the length of the beam, the graphene Nano reinforcement is dispersed in an epoxy polymer matrix as “O” pattern using a function. Material modulus at each location of the beam is modelled using Halpin-Tsai micromechanics theory, the mass density and Poisson’s Ratio of the beam are determined using rule of mixture. The geometry non-uniformity of the beam is modelled using an exponential function. Using MATLAB software code, simulation and parametric analysis of the beam are performed for various slenderness ratios and varied boundary conditions. The non-uniform beam result is obtained after the result for a uniform beam is used to validate it. In result it is analyzed that for the particular geometric and reinforcement configuration of the beam, as the non-uniformity in the beam geometry is increases, the fundamental frequency decreases, and the slenderness ratio has also the same effect on its fundamental frequency.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176209","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}
Muhammad Ismayil K M, N G Salini, Shabina Koroth Koyiloth, Rosy Antony
{"title":"Vapour permeation characteristics of aliphatic alcohols through PVA/PVC thin films","authors":"Muhammad Ismayil K M, N G Salini, Shabina Koroth Koyiloth, Rosy Antony","doi":"10.1177/00952443241270881","DOIUrl":"https://doi.org/10.1177/00952443241270881","url":null,"abstract":"Nonsolvent induced phase separation (NIPS) method using NMP/water system was adopted to prepare PVA/PVC thin films and were characterized by FTIR & FE-SEM analysis. Mechanical strength measurements indicated that an optimum composition of PVA/PVC has maximum tensile strength and might be due to the intercalation of viscous PVA into the stiff PVC matrix. Degree of swelling (DS) and water contact angle (WCA) measurements showed greater wettability of the films with increasing PVA content as is revealed from the higher film porosity and diminished contact angle. Pure water flux (PWF) and mean pore size were studied to determine the water permeation capacity of the film. Vapour permeability of various films was evaluated by using three different aliphatic alcohols viz. Methanol, ethanol and propanol. Barrier property and selectivity in permeation were studied for a particular PVA/PVC composition with moderate number and size of the pores which exhibited minimum permeation capacity.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176210","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}
Dattatraya R Hipparkar, Sunil Chandel, Rahul Harshe
{"title":"A novel design of compact elastomer shock absorption system to protect sensitive objects from underwater shock for naval application","authors":"Dattatraya R Hipparkar, Sunil Chandel, Rahul Harshe","doi":"10.1177/00952443241276456","DOIUrl":"https://doi.org/10.1177/00952443241276456","url":null,"abstract":"This research paper proposes a unique way to safeguard delicate systems on submerged platforms from the undesirable effects of underwater explosion shock loads. The underwater detonation of an explosive charge and mines produce devastating underwater shocks against underwater platforms. Shock load developed underwater has been analyzed, and a shock response spectrum (SRS) approach to compute shock peak responses has been adopted. SRS shock absorption frequency satisfies requirements for both shock absorption and delicate systems. The shock load was reduced to 2g by altering the delicate system stiffness and damping properties. The analytical model for a single DOF system was formulated, and simulation was carried out using ANSYS solver. The stiffness has been spread across various points along the length of the delicate system, allowing it to undergo translational oscillations when subjected to shock loads. This research paper presents an innovative design approach for a shock absorption system intended for underwater sensitive objects, emphasizing simplicity, distinctiveness, compactness, reliability, and electromagnetic compatibility. Experimental testing validated the shock absorption design on the prototype. Shock testing determined the absorber’s maximum displacement and sensitive object acceleration.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176211","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":"Comparative study of dielectric characteristics and radio transparency of composite materials","authors":"Azira Muratovna Yermakhanova, Aidar Karaulovich Kenzhegulov, Mohammed Nurgazyuly Meiirbekov, Berdiyar Meirzhanuly Baiserikov","doi":"10.1177/00952443241273957","DOIUrl":"https://doi.org/10.1177/00952443241273957","url":null,"abstract":"Polymer composites with low dielectric properties and excellent radio transparency are essential for high signal transmission rates and high device integration. However, creating dielectric polymer composites with high radio transparency is a challenging task. This work presents comparative results of studying the dielectric loss, permittivity and radio transparency of composite materials, such as aramid-epoxy composite (AEC), glass fiber (GF), carbon fiber reinforced plastic (CFRP), and ultra-high molecular weight high-density polyethylene (UHMWPE). Based on the experimental results, the following transmission percentages were established for various materials: CFRP – 2.45%, AEC – 79.43%, UHMWPE – 80.16%, and GF – 78.88%. The dielectric loss tangent angle of carbon fiber is significantly higher compared to other polymer composites, UHMWPE exhibits the lowest tangent angle values, and AEC and GF have stable and low dielectric loss. The obtained polymer composites demonstrated low dielectric permittivity values: AEС 2.9, UHMWPE 2.56, and GF 3.64.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176212","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}
P. Saravanamuthukumar, J. Kaaviya, Sabarinathan Palaniyappan, Narain Kumar Sivakumar, Mahdi Bodaghi, Mostafizur Rahaman, Saravanan Pandiaraj
{"title":"Compressive strength performance of 3D printed PLA/almond shell particles reinforced PLA multi-material composite","authors":"P. Saravanamuthukumar, J. Kaaviya, Sabarinathan Palaniyappan, Narain Kumar Sivakumar, Mahdi Bodaghi, Mostafizur Rahaman, Saravanan Pandiaraj","doi":"10.1177/00952443241270804","DOIUrl":"https://doi.org/10.1177/00952443241270804","url":null,"abstract":"The advent of 3D printing has revolutionized the manufacturing landscape, enabling the creation of intricate structures and personalized designs. The use of multi-material polymer composites in additive manufacturing has further expanded possibilities, offering enhanced mechanical properties and advanced functionalities. In the present study, PLA/Almond shell reinforced PLA (PLA/AmdPLA) multi-material composites were developed using Fused Filament Fabrication (FFF) method. The objective of this study is to develop the multi-material and optimize the 3D-Printing Parameters (3D-PP) with respect to Printing Speed (PS), Layer Height (LH), and Printing Temperature (PT), in order to maximize the compressive strength of the composites. The L<jats:sub>16</jats:sub> Taguchi orthogonal array was established to systematically study the effects of the 3D-PP on the compressive strength. Through a series of experiments, varying the levels of each 3D-PP, data was collected and analyzed to determine the optimal 3D-PP settings. The results demonstrate that the PLA/AmdPLA multi-material composites achieved its maximum compressive strength when fabricated at a PS of 20 mm/sec, a LH of 0.1 mm, and a PT of 210°C. Furthermore, the findings revealed that the PS and LH significantly influenced the compressive strength, while the PT exhibited moderate effects. The regression analysis results indicate that the compression experiments conducted on the PLA/AmdPLA multi-material composites yielded an error percentage of 4.73%. This suggests a strong agreement between the predicted values obtained from the regression model and the actual experimental results which shows that the model has high accuracy. Therefore, these functional composite materials are recognized for their superior strength, lightweight properties, appealing aesthetics, and sustainable qualities in various consumer applications.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"192 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930698","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}
Mohammad Kazem Nikzad, Faramarz Ashenai Ghasemi, Farshid Aghadavoudi
{"title":"Experimental analysis of the effect of the atomic radius of silica nanoparticles on the mechanical and thermal properties of poly lactic acid nanocomposites","authors":"Mohammad Kazem Nikzad, Faramarz Ashenai Ghasemi, Farshid Aghadavoudi","doi":"10.1177/00952443241270789","DOIUrl":"https://doi.org/10.1177/00952443241270789","url":null,"abstract":"In this research, the effect of the atomic radius of silica nanoparticles (SiO<jats:sub>2</jats:sub>) on the tensile and thermal properties of polylactic acid (PLA) based nanocomposites was analyzed. Different nanocomposite samples were made using PLA matrix with three atomic radius ranges of 15–20 nm, 20–30 nm, and 50–70 nm, and three-volume percentages (1, 2, and 3%) SiO<jats:sub>2</jats:sub> nanoparticles. First, to observe the state of dispersion of SiO<jats:sub>2</jats:sub> nanoparticles in the fabricated samples, photographs were taken with the field emission scanning electron microscope (FESEM) and the platinum coating method. FESEM images showed that 15–20 nm and 20–30 nm nanoparticles were better dispersed in the PLA matrix than 50–70 nm due to their smaller size. Then experimental tests were performed on the samples and parameters of modulus of elasticity, tensile strength, and heat deflection temperature (HDT) were measured. The results of the experiments showed that 15–20 nm SiO<jats:sub>2</jats:sub> nanoparticles caused a 1% decrease in modulus of elasticity, a 2% decrease in tensile strength, and a 3.5% increase in HDT temperature. 20–30 nm SiO<jats:sub>2</jats:sub> nanoparticles increased the modulus of elasticity by 8.8%, tensile strength by 1.8%, and HDT temperature by 1%. 50–70 nm SiO<jats:sub>2</jats:sub> nanoparticles also caused a 3.3% increase in modulus of elasticity, a 1.1% increase in tensile strength, and a 4% increase in HDT temperature. The results showed that besides the volume fraction, the size of the reinforcing nanoparticles is also an effective factor in the mechanical properties of PLA nanocomposites.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881011","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}