Iranian Polymer Journal最新文献

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Ultra-fast setting rate of a new bioactive binder for bone repair 用于骨修复的新型生物活性粘合剂的超快凝固率
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-23 DOI: 10.1007/s13726-024-01354-1
Ning Gu, Qingxiao Liu, Qichao Liu, Ying Ren, Xiaodong Liu, Youyi Sun, Yang Cao
{"title":"Ultra-fast setting rate of a new bioactive binder for bone repair","authors":"Ning Gu,&nbsp;Qingxiao Liu,&nbsp;Qichao Liu,&nbsp;Ying Ren,&nbsp;Xiaodong Liu,&nbsp;Youyi Sun,&nbsp;Yang Cao","doi":"10.1007/s13726-024-01354-1","DOIUrl":"10.1007/s13726-024-01354-1","url":null,"abstract":"<div><p>Polymer bone binder has attracted lots of attention due to its facile preparation, biodegradability, and so on. However, achieving strong adhesion, easy preparation, and fast setting rate for polymer bone binding is still a great challenge. So, here, a new polymer bone binder is developed and prepared to simultaneously improve setting rate and strength. The bone binder is composed of polyethyleneglycol, ethylhydroacrylate, chitosan, and SiO<sub>2</sub> nanoparticles. It exhibits good biocompatibility and large bonding strength (ca. 2.0 MPa). Furthermore, the bone binder shows an ultra-fast setting rate (ca. 100 s), which is far faster than that reported in previous works. The bone binder is further evaluated to bond chicken bone, which exhibits a high binding force of 2.0 kgf in a short setting time of only 5.0 min. The good biocompatibility and the large bonding strength of the present bone binder are attributed to the green and environmentally friendly composition (e.g., cyanoacrylate, chitosan, polyethyleneglycol and SiO<sub>2</sub> nanoparticles) and cross-linking network between chitosan and SiO<sub>2</sub> nanoparticles. The ultra-fast setting process is attributed to the rapid polymerization of cyanoacrylate and the physical interaction of SiO<sub>2</sub> nanoparticles with chitosan and polyethyleneglycol. The work provides a new method to design and prepare high-performance bone binders for use in bone fracture repair.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1667 - 1675"},"PeriodicalIF":2.4,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic effect of graphene and carbon black on the mechanical and vibration damping characteristics of styrene-butadiene rubber 石墨烯和炭黑对丁苯橡胶机械和减振特性的协同效应
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-21 DOI: 10.1007/s13726-024-01349-y
Sivakumar Chandramohan, Muralidharan Vaithiyanathan, Bikash Chandra Chakraborty, Murali Manohar Dharmaraj
{"title":"Synergistic effect of graphene and carbon black on the mechanical and vibration damping characteristics of styrene-butadiene rubber","authors":"Sivakumar Chandramohan,&nbsp;Muralidharan Vaithiyanathan,&nbsp;Bikash Chandra Chakraborty,&nbsp;Murali Manohar Dharmaraj","doi":"10.1007/s13726-024-01349-y","DOIUrl":"10.1007/s13726-024-01349-y","url":null,"abstract":"<div><p>This work experimentally introduces a novel approach to vibration damping materials in industrial applications, investigating the synergistic effect of graphene nanoplates (GNP) and carbon black (CB) within styrene-butadiene rubber (SBR) to enhance both mechanical properties and vibration damping characteristics. The SBR hybrid nanocomposite containing a fixed amount of CB (20 phr) and a variable amount of GNP (2, 5, 7.5, and 10 phr) was prepared to compare with a neat SBR and 20 phr CB/SBR composite. The hybrid nanocomposites underwent assessment for morphology, tensile strength, tear strength, hardness, and vibration damping characteristics utilizing constrained layer damping (CLD). The results indicated that, in comparison to non-hybrid composites, the addition of GNP to the SBR matrix substantially improved the tensile strength by 64%, modulus by 28%, stiffness by 28%, and tear strength by 31.3%. Experimental modal analysis was used to determine the vibration characteristics. The system loss factor of the CLD exhibited a notable increase of 105% and 44% in the first and second modes, respectively, with the incorporation of 10 phr graphene in the hybridized composite, as compared to the composite containing only carbon black. The experimental damping loss factor was compared with theoretical model values proposed in one available mathematical model revealing a better agreement overall, though an exception was noted in the first mode. This paper can serve as a foundation for fabricating constrained layer damping (CLD) structures using hybrid fillers, resulting in high materials loss factors suitable for low-frequency applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 1","pages":"17 - 27"},"PeriodicalIF":2.4,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The degradation of poly(1-butene) extrudates subjected to artificial and natural aging 经人工老化和自然老化的聚(1-丁烯)挤出物的降解情况
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-20 DOI: 10.1007/s13726-024-01348-z
Sona Zenzingerova, Michal Kudlacek, Lubomir Benicek, David Jaska, Jana Navratilova, Lenka Gajzlerova, Roman Cermak
{"title":"The degradation of poly(1-butene) extrudates subjected to artificial and natural aging","authors":"Sona Zenzingerova,&nbsp;Michal Kudlacek,&nbsp;Lubomir Benicek,&nbsp;David Jaska,&nbsp;Jana Navratilova,&nbsp;Lenka Gajzlerova,&nbsp;Roman Cermak","doi":"10.1007/s13726-024-01348-z","DOIUrl":"10.1007/s13726-024-01348-z","url":null,"abstract":"<div><p>In this work, we examined the degradation behavior of isotactic poly(1-butene) (PB-1) under artificial aging and natural weathering conditions. PB-1 samples underwent accelerated aging through UV irradiation and natural weathering. Chemical and structural changes in the degraded samples were characterized using Fourier-transform infrared–attenuated total reflectance (FTIR–ATR) spectroscopy, surface analysis, and wide-angle X-ray scattering (WAXS). The mechanical properties were evaluated via tensile testing. FTIR–ATR analysis revealed the presence of carbonyl groups in the degraded samples, indicating oxidative degradation. Surface observations employing scanning electron microscopy (SEM) revealed the formation of surface cracks in both samples, with differing crack initiation mechanisms. The two aging methods affected the mechanical properties of the samples: artificial aging induced a gradual reduction in both tensile modulus and strength, whereas natural weathering engendered a marginal increment in modulus alongside diminished strength. Additionally, elongation-at-break value witnessed a marked decrease in both sample sets during the preliminary stages of degradation. This work employed accelerated time equivalent, obtained by juxtaposition of the values of carbonyl index during both artificial aging and natural weathering and their interpolation to determine the degradation rate and adequately to correlate the final properties of the aged PB-1. It was observed that surface morphology and mechanical attributes of degraded samples were subject to additional influences such as temperature, humidity, and precipitation during natural weathering. This research work provided significant insights into PB-1 degradation mechanisms and effect of different aging conditions on its performance.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1725 - 1735"},"PeriodicalIF":2.4,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13726-024-01348-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comparative study on the impact performance of water-exposed balsa-cored sandwich structures 露水轻木芯夹层结构冲击性能比较研究
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-15 DOI: 10.1007/s13726-024-01346-1
Moslem Najafi, Jafar Eskandari Jam, Reza Ansari
{"title":"A comparative study on the impact performance of water-exposed balsa-cored sandwich structures","authors":"Moslem Najafi,&nbsp;Jafar Eskandari Jam,&nbsp;Reza Ansari","doi":"10.1007/s13726-024-01346-1","DOIUrl":"10.1007/s13726-024-01346-1","url":null,"abstract":"<div><p>This study aims to examine how moisture absorption affects the impact behavior of a recently developed sandwich structure designed for use as a water-resistant system in the marine industry. For this purpose, two types of balsa-cored sandwich systems were manufactured, one with conventional glass fiber-epoxy (GE) skins and the other with novel fiber metal laminates (FML) skins. Subsequently, the specimens were exposed to environmental aging through distilled water immersion for 100 days before impact testing. Low-velocity impact behavior was studied using Charpy tests, while high-velocity impact tests were conducted with a light gas gun. The experimental results showed that FML sandwich systems exhibited significantly better impact characteristics compared to GE systems. Before aging, the Charpy impact strength and high-velocity impact absorbed energy of FML systems were 187% and 49% higher than those of GE ones. Another main finding was the impact properties of the FML systems showed a lower decline due to moisture aging compared to the GE systems, for both low- and high-velocity impacts. The reduction of Charpy impact strength and high-velocity impact absorbed energy due to moisture aging in GE systems with sealed edges was about 15%, and 3%, respectively, and for sealed edges FML systems was less than 12% and 1%, respectively. The results also indicated that the high-velocity impact properties of both sandwich systems studied were not significantly affected by moisture aging. In general, the findings suggest that FML skins significantly enhance both the impact resistance and environmental durability in marine balsa-cored sandwich structures.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1677 - 1688"},"PeriodicalIF":2.4,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141336745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic effect between ammonium polyphosphate-functionalized poly(lactic acid) and phosphated avocado seed on the flame-retardant properties of poly(lactic acid)/ethylene–vinyl acetate copolymer composites 聚磷酸铵功能化聚(乳酸)和磷化鳄梨籽对聚(乳酸)/乙烯-醋酸乙烯共聚物复合材料阻燃性能的协同效应
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-14 DOI: 10.1007/s13726-024-01345-2
José David Zuluaga-Parra, Luis Francisco Ramos-de Valle, Saúl Sánchez-Valdéz, Rachel Faverzani-Magnago, Adriano da Silva, Luciano da Silva
{"title":"Synergistic effect between ammonium polyphosphate-functionalized poly(lactic acid) and phosphated avocado seed on the flame-retardant properties of poly(lactic acid)/ethylene–vinyl acetate copolymer composites","authors":"José David Zuluaga-Parra,&nbsp;Luis Francisco Ramos-de Valle,&nbsp;Saúl Sánchez-Valdéz,&nbsp;Rachel Faverzani-Magnago,&nbsp;Adriano da Silva,&nbsp;Luciano da Silva","doi":"10.1007/s13726-024-01345-2","DOIUrl":"10.1007/s13726-024-01345-2","url":null,"abstract":"<div><p>Composites of modified avocado seed with ammonium polyphosphate (APP)-functionalized poly(lactic acid) (PLA), in a PLA/ethylene–vinyl acetate copolymer (EVA) matrix, were prepared in an internal mixer and characterized. The results of flame retardancy tests show that the joint use of APP and modified avocado seeds in the polymer mixture can provide flame-retardant characteristics. We observed a decrease in the heat release peak and in the total energy released, in addition to the generation of a residual intumescent layer after cone calorimeter tests. On the other hand, APP-functionalized PLA and avocado seed in concentrations of 10% and 30% (by weight), respectively, have a synergistic effect when incorporated into the polymer mixture; reducing the peak of the heat release rate (pHRR) by 58% and the total energy released by 34%, resulting in an amount of waste of about 18%. In the same way, this synergistic effect allowed the material to be classified as V-0 in the UL-94 tests as well as achieving LOI values of 30%. The results show that this combination can be classified as a self-extinguishing material. Therefore, this research aims to promote the use of more sustainable and renewable feedstocks to produce flame retardants in polymeric materials.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 1","pages":"1 - 15"},"PeriodicalIF":2.4,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141340464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of polysulfone membranes and their application for removing rare earth ions from aqueous solutions by polyvinyl alcohol-enhanced ultrafiltration 聚砜膜的开发及其在通过聚乙烯醇增强超滤去除水溶液中稀土离子中的应用
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-13 DOI: 10.1007/s13726-024-01325-6
Nourhen Ben Kraiem, Asma Rhimi, Khira Zlaoui, Karima Horchani-Naifer, Amor Hafiane, Dorra Jellouli Ennigrou
{"title":"Development of polysulfone membranes and their application for removing rare earth ions from aqueous solutions by polyvinyl alcohol-enhanced ultrafiltration","authors":"Nourhen Ben Kraiem,&nbsp;Asma Rhimi,&nbsp;Khira Zlaoui,&nbsp;Karima Horchani-Naifer,&nbsp;Amor Hafiane,&nbsp;Dorra Jellouli Ennigrou","doi":"10.1007/s13726-024-01325-6","DOIUrl":"10.1007/s13726-024-01325-6","url":null,"abstract":"<div><p>A polymeric ultrafiltration membrane was synthesized from a homogeneous solution of polysulfone (16 and 18% by weights) using <i>N</i>-methyl-2-pyrrolidone as the solvent by employing a phase inversion technique. The prepared membranes were characterized by scanning electron microscopy, water contact angle, and Fourier-transform infrared spectroscopy. The membranes were tested for ultrafiltration properties such as yttrium and lanthanum retention, bovine serum albumin rejection, and ultrapure water permeation measurement. To increase the hydrophilicity of the polysulfone membranes, this study investigates how the amount of polysulfone affects the functions and structure of the membranes produced. Moreover, the addition of polyvinyl pyrrolidone improves the pore size of the membrane to become larger, which can increase its permeability and flux. Based on the results of retention and flux permeation results, a polysulfone membrane (16% by weights) showed the best performance. These membranes were subjected to ultrafiltration tests and the results showed an increased retention of yttrium ions and bovine serum albumin of 99.11% and 18%, respectively. The aim of this study is to evaluate the removal efficiency of yttrium and lanthanum ions (98%) at pH 6 under 4 bar transmembrane pressure using the polyelectrolyte-enhanced ultrafiltration process by incorporating polyvinyl alcohol as a polyelectrolyte chelating agent.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 10","pages":"1481 - 1491"},"PeriodicalIF":2.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141348478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green based composite polyurethane coatings for steel 用于钢材的绿色复合聚氨酯涂料
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-08 DOI: 10.1007/s13726-024-01341-6
Dmitry S. Konovalov, Natalia N. Saprykina, Vjacheslav V. Zuev
{"title":"Green based composite polyurethane coatings for steel","authors":"Dmitry S. Konovalov,&nbsp;Natalia N. Saprykina,&nbsp;Vjacheslav V. Zuev","doi":"10.1007/s13726-024-01341-6","DOIUrl":"10.1007/s13726-024-01341-6","url":null,"abstract":"<div><p>The polyurethane composites based on vegetable source were prepared and their properties were investigated. Castor oil was used as polyol and diatomite and birch flour were used as fillers. The introduction of diatomite led to development of ordered quasi-lamellar morphology of polyurethane matrix. This effect in combination with loading of birch flour with fiber structure allowed to obtain polymer composites with improved tensile strength (up to 14 MPa, an increase on five times in comparison with the neat polyurethane). The glass-transition temperatures of polymer composites increased more than 40 °C relative to the neat polymer. Adhesion to steel increased more than in five times in comparison with the neat polyurethane for composite containing 20 wt% diatomite additives). The SEM and FTIR spectroscopy techniques were used to evaluate the microphase structure of the polyurethane composites. SEM micrographs showed that the diatomite particles served as nucleation centers for formation of lamellar-like structure of PU matrix. At the optimal loading (20 wt%) the almost uniform lamellar-like structure of PU matrix was formed, that provided the best mechanical performance of PU composites. However, as FTIR study showed, formation of lamellar-like structure of PU matrix did not induce its inner microphase transformation. The presence of wood fibers in composites, despite their better mechanical performance, led to the decrease of their adhesion to steel.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1627 - 1636"},"PeriodicalIF":2.4,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141368756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphology and surface properties of polystyrene-block-poly(N-isopropylacrylamide) films 聚苯乙烯-块状-聚(N-异丙基丙烯酰胺)薄膜的形态和表面特性
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-08 DOI: 10.1007/s13726-024-01332-7
Elham Sabzi Dizajyekan, Morteza Nasiri, Farhang Abbasi
{"title":"Morphology and surface properties of polystyrene-block-poly(N-isopropylacrylamide) films","authors":"Elham Sabzi Dizajyekan,&nbsp;Morteza Nasiri,&nbsp;Farhang Abbasi","doi":"10.1007/s13726-024-01332-7","DOIUrl":"10.1007/s13726-024-01332-7","url":null,"abstract":"<div><p>The self-assembly of diblock copolymers in thin films offers a promising method for developing innovative products in biomedical and engineering applications. In this study, we utilized amphiphilic polystyrene-<i>block</i>-poly(<i>N</i>-isopropylacrylamide) (PS-<i>b</i>-PNIPAM) diblock copolymers to explore and analyze the distinctive properties exhibited by their thin films when formed on the substrate. PS-<i>b</i>-PNIPAM copolymers, with different molecular weights (MWs) and narrow MW distributions, were synthesized via atom transfer radical polymerization. The subsequent fabrication of thin films, achieved through the spin coating method, revealed microphase separation phenomena. The interplay of MW and composition exerted a notable influence on the ordered structures, giving rise to a diverse array of morphologies within the thin films. This intricate relationship between molecular characteristics and the resulting material structures highlights the importance of tailoring both MW and composition for the precise control and manipulation of thin film properties in the context of PS-<i>b</i>-PNIPAM copolymers. We also examined the impact of conducting the direct immersion annealing (DIA) on surfaces created with the amphiphilic PS-<i>b</i>-PNIPAM copolymer. The thermo-responsivity of amphiphilic PS-<i>b</i>-PNIPAM copolymer and the effect of DIA on the surface properties were examined. Our results showed that the surface morphology could be controlled by the DIA process. Furthermore, it was observed that the MW of the diblock copolymers played a significant role in influencing the orientation of the separated microdomains, further emphasizing the multifaceted interplay of parameters in tailoring the properties of surfaces created with PS-<i>b</i>-PNIPAM copolymers.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1637 - 1649"},"PeriodicalIF":2.4,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141370621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of sea sand reinforcement on the static and dynamic properties of functionally graded epoxy composites 海砂加固对功能分级环氧树脂复合材料静态和动态性能的影响
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-06 DOI: 10.1007/s13726-024-01340-7
T. S. Mohan Kumar, Sharnappa Joladarashi, S. M. Kulkarni, Saleemsab Doddamani
{"title":"Influence of sea sand reinforcement on the static and dynamic properties of functionally graded epoxy composites","authors":"T. S. Mohan Kumar,&nbsp;Sharnappa Joladarashi,&nbsp;S. M. Kulkarni,&nbsp;Saleemsab Doddamani","doi":"10.1007/s13726-024-01340-7","DOIUrl":"10.1007/s13726-024-01340-7","url":null,"abstract":"<div><p>This study aims to study the static and dynamic properties of the functionally graded epoxy composites with sea sand particles as reinforcement. In this study, functionally graded polymer composites (FGPC) were fabricated by dispersing sea sand throughout the epoxy, exhibiting a spatially varying composition profile within the material. Physio-mechanical properties and high strain rate compression responses were determined for the prepared FGPC by varying the composition of sea sand [0%, 10%, 20%, and 30% (by weight)]. The gradience analysis was performed using the burn-out test and weight method, and the results significantly matched, as well as the variation in gradation could be identified. The density and void content are increased with increased sea sand composition. Tensile and specific strength for neat epoxy shows a 2.41 times increase compared to 30% sea sand-filled epoxy. When loaded from the composite side of FGPC, flexural strength increased by 27.93%, hardness increased by 12.47%, and impact strength increased by 2.35 times for 30% sea sand-filled epoxy compared to neat epoxy. Under dynamic compression loading, FGPC was subjected to split-Hopkinson pressure bar experiments for neat and filled epoxy. These samples were deformed at strain rates in the 10<sup>3</sup> s<sup>−1</sup> while subjected to pressures of 2, 3, and 4 bar. Stress–strain curves and the strain rate were computed using the raw data. High strain rates improve compressive strength, which increases exponentially as the strain rates increase. Scanning electron microscopy micrographs of the fractured specimen are employed to analyze the fracture characteristics.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1609 - 1626"},"PeriodicalIF":2.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141379577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of heat assisted friction stir processing on the mechanical properties and cell viability in PLA/basalt/graphene nanocomposites 热辅助摩擦搅拌加工对聚乳酸/沥青/石墨烯纳米复合材料机械性能和细胞活力的影响
IF 2.4 3区 化学
Iranian Polymer Journal Pub Date : 2024-06-06 DOI: 10.1007/s13726-024-01343-4
Arun Nallathambi, Prakash Muniyandi
{"title":"Influence of heat assisted friction stir processing on the mechanical properties and cell viability in PLA/basalt/graphene nanocomposites","authors":"Arun Nallathambi,&nbsp;Prakash Muniyandi","doi":"10.1007/s13726-024-01343-4","DOIUrl":"10.1007/s13726-024-01343-4","url":null,"abstract":"<div><p>Polylactic acid (PLA) composites have been widely used in biomedical implants because of biocompatibility and improved mechanical properties. The aim of this study is to produce the polymer nanocomposite with the graphene nanoparticles as a filler through heat-assisted shoulder less friction stir processing (FSP) and to investigate the effect of the process parameter on the microstructural and mechanical characteristics. Rotational speed of 600 rpm is kept constant, tool feed rate of 10, 15 and 20 mm/min, volume fraction of 5%, 10% and 15% of graphene nanopowder and shoulder temperature of 35, 40 and 45 °C are taken as parameters to conduct the FSP. Response surface methodology (RSM) is performed to identify the process parameters which significantly affect the process. Microstructural observations have been conducted to confirm the presence of graphene nanoparticles along the direction of the FSP. In addition, the tensile and microhardness tests have been carried out to analyze the mechanical properties of the prepared samples. The results of methyl thiazol tetrazolium (MTT) assay analysis conducted on human osteoblastic cell line (MG63) show that the sample fabricated with 10% and 15% of graphene nanoparticles is nontoxic and holds a better survivability after a 48 h of study under in vitro culture conditions for tissue in-growth and confirms that this could be applicable for bone implants. The findings of the ANOVA verify that the temperature is the least important factor for producing a composite with better performance, while the volume percentage and feed rate are the most important factors.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 9","pages":"1293 - 1312"},"PeriodicalIF":2.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141380246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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