Iranian Polymer Journal最新文献

{"title":"Improved thermal conductivity of immiscible polyamide 6 (PA6)/polyolefin elastomer (POE) blend by controlling selective localization of aluminum nitride (AlN)","authors":"Marjan Shahmir, Shervin Ahmadi, Hassan Arabi","doi":"10.1007/s13726-024-01352-3","DOIUrl":"https://doi.org/10.1007/s13726-024-01352-3","url":null,"abstract":"<p>The effect of selective localization of aluminum nitride (AlN) on the thermal conductivity of immiscible polyamide 6/polyolefin elastomer (PA6/POE/70/30) was studied. Morphological characterization proved that the neat blend had droplet-matrix morphology, and adding 10% (by wt) AlN to the minor phase resulted in stable co-continuous morphology formation. We have shown that the localization of AlN depends on the interfacial tensions between different blend components. AlN, which was first wetted by POE phase, tended to migrate to the interface due to thermodynamic tendency. AlN was first wetted by the PA6 phase following its dispersion in this phase. The rheological results confirmed the strong peculated structure formed in 70/30/10 (PA6/POE/AlN) sample and better thermal conductivity compared to pure blend. The thermogravimetric measurement revealed that the thermal stability of the composite with a double percolation structure increased by 8 °C compared to the pure sample. DSC analysis results showed that the crystallinity of 70/30/10 (PA6/POE/AlN) sample decreased nearly 25% due to increased interfacial area. The impact strength of 70-30-AO₁₀ reached 8.8 kJ.mm^–2, which was about 2 times higher than the pure PA6. The thermal conductivity of PA6/POE composite with 10% (by wt) AlN was enhanced to 3.76 W.(mK)⁻¹, nearly nine times higher than the pure blend. In summary, a stable co-continuous morphology with high thermal conductivity, fairly good mechanical properties, and low percolation threshold were obtained in immiscible (PA6/POE/70/30) blend by controlling the selective localization of 10% (by wt) AlN particles which can be a perspective for designing and producing composites especially in electronic devices.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"36 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141568103","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}

{"title":"Mercerized flax-g-poly(polyvinyl alcohol + acrylic acid) reinforced polyester resin derived from waste plastic bottles: dynamic mechanical analysis and chemical-thermal resistance","authors":"Himani Sharma, Susmriti Dolui, Saksham, Divyansh Saini, Raman Bedi, Balbir Singh Kaith","doi":"10.1007/s13726-024-01356-z","DOIUrl":"https://doi.org/10.1007/s13726-024-01356-z","url":null,"abstract":"<p>The aim of present work is to fabricate a polyester composite reinforced with mercerized flax-<i>g</i>-poly(polyvinyl alchol + acrylic acid) copolymer. In addition, a comparative study of mechanical properties using dynamic mechanical analysis (DMA) technique was made as a function of reinforcement of matrix with raw flax (rFlax) and mercerized flax (mFlax) in order to be able to use such composites in water resistant wall panelling, cupboards and furniture tops. Polyester resin was derived from waste plastic bottles. Binary vinyl monomer mixture of polyvinyl alcohol (PVA) and acrylic acid (AA) was graft copolymerized onto mFlax and a graft yield of 118.3% was obtained. Grafted mFlax showed higher acid–base, solvent and thermal resistance. Composites prepared were studied for different mechanical parameters like storage modulus, loss modulus and damping. The mFlax-<i>g</i>-poly(PVA + AA) reinforced composite showed higher storage modulus (E’) and exhibited higher Tanδ value which indicated superior damping properties. A higher glass transition temperature was also observed, which was further supported by thermal studies. The novelty of the present work is the approach of waste to wealth, in which chemically modified textile waste and recycled plastic resins were used in the preparation of composites. The mechanical properties obtained through DMA showed that the composite reinforced with chemically modified flax had better storage modulus, loss modulus and damping properties.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"24 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552307","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}

{"title":"Compatibility and miscibility of recycled polyethylene terephthalate/polyamide 11 blends with and without Joncryl® compatibilizer: a comprehensive study of mechanical, thermal, and thermomechanical properties","authors":"Unsia Habib,&nbsp;Zahid Iqbal Khan,&nbsp;Zurina Binti Mohamad","doi":"10.1007/s13726-024-01357-y","DOIUrl":"10.1007/s13726-024-01357-y","url":null,"abstract":"<div><p>This innovative study explores the enhanced compatibility and miscibility of recycled polyethylene terephthalate and polyamide 11 (RPET/PA-11), particularly when modified with Joncryl^®, a compatibilizer. This investigation marks the first venture into the detailed thermal and thermo-mechanical properties of the blends. Remarkably, the addition of 20% (by weight) PA-11 to RPET significantly boosts tensile strength from 18.5 ± 2.64 to 32.20 ± 4.95 MPa, flexural strength from 27.90 ± 3.17 to 46.75 ± 0.78 MPa, and impact strength from 110.53 to 147.12 J/m. Furthermore, introducing 2 phr Joncryl^® further fortifies these strengths to 46.24 ± 0.87 MPa, 63.12 ± 4.75 MPa, and 667.68 ± 130.74 J/m, respectively. The study revealed a rise in the storage modulus of RPET from 1128 to 1298.5 MPa with 20% (by weight) of PA-11. Compatibility and miscibility assessments through Fourier transformation infrared (FTIR), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM) validate the blend's uniformity. DSC reveals that the melting temperatures for RPET/PA-11 blends with varying PA-11 concentrations closely match the melting temperature of pure RPET, signifying stable thermal properties. DSC results confirmed that the T_m1 temperature for cold crystallization drops with the addition of Joncryl^® content, suggesting improved interaction and miscibility between RPET and PA-11. TGA results disclosed that Joncryl^® compatibilizer, especially at 2 phr, boosts the thermal stability of RPET/PA-11 blends by improving miscibility. The 2 phr Joncryl^® blend was identified as the most robust in properties. This ground-breaking research highlights the potential of RPET in automotive and future advancements in polymer science.</p><h3>Graphical abstract</h3><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":"1313 - 1326"},"PeriodicalIF":2.4,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552306","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}

{"title":"A comparative study of the physiochemical and biological properties of tetracycline-loaded polypropylene sutures prepared through different plasma treatments","authors":"Nader kasiri, Marziyeh Mousazadeh, Faezeh Mousazadeh, Maryam Nikkhah, Hamid Keshvari","doi":"10.1007/s13726-024-01353-2","DOIUrl":"https://doi.org/10.1007/s13726-024-01353-2","url":null,"abstract":"<p>In this work, a comparative investigation was done on the physiochemical and biological properties of tetracycline-loaded polypropylene sutures prepared through nitrogen, oxygen, and/or argon plasma treatment/grafting method. Two types of multi- and monofilament polypropylene sutures were treated by various plasma gases followed by acrylonitrile and acrylic acid grafting. Nitrogen and oxygen plasmas compared to argon plasma showed higher efficiencies in functionalization and wettability of the filaments. Tetracycline hydrochloride loading on the plasma-treated/grafted filaments was done through immersion method. The prepared filaments were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and attenuated total reflection–Fourier transform infrared spectroscopy (ATR-FTIR) and their mechanical properties were determined, accordingly. The antibacterial effect of tetracycline hydrochloride was studied over two different Gram-positive and Gram-negative bacteria. No cytotoxicity was observed for these filaments on the L929 fibroblast cell line using MTT assay. The release profile of the tetracycline hydrochloride-loaded sutures reached the stationary phase in 25 h. Nitrogen plasma-treated sutures showed the highest drug release profile among the others. The current work showed the effects of different plasma treatments on the biological, mechanical, and chemical properties of the tetracycline-loaded polypropylene sutures. The nitrogen plasma was superior to oxygen plasma in the opinion of grafting rate, mechanical properties, and antibacterial activities.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"66 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524994","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}

{"title":"Synergistic effect of a new binary accelerator system on curing characteristics and properties of styrene–butadiene rubber vulcanizates","authors":"Fahima M. Helaly,&nbsp;Adel A. Koriem,&nbsp;Samaa R. Salem,&nbsp;Sanaa M. El-Sawy,&nbsp;Fikry A. Abdel-Mohdy,&nbsp;Aman I. Khalaf","doi":"10.1007/s13726-024-01344-3","DOIUrl":"10.1007/s13726-024-01344-3","url":null,"abstract":"<div><p>Enhancing the vulcanization rate of elastomers is a common objective for optimizing their performance. Styrene–butadiene rubber (SBR) was vulcanized employing several conventional systems designed with various amounts of sulfur and activators/accelerators. Herein, it was an attempt to synthesize a copolymer from glycidyl methacrylate (GMA) and diethylaminoethyl methacrylate (DEAEMA)-(GMA-<i>co</i>-DEAEMA) and study its effect as a secondary accelerator on the curing characteristics and vulcanizate properties of SBR. The copolymer GMA-<i>co</i>-DEAEMA (III) was grafted with three different functional groups (R) including thioglycolic acid, 2-aminothiophenol, and 2-amino-5-mercaptothiazole, to yield III/S/1, IIII/S/2, and III/S/3 copolymers, respectively. The three-modified copolymers with an added conventional accelerator <i>N</i>-cyclohexyl-2-benzothiazole sulfenamide (CBS) were used to accelerate the efficiency of the vulcanizing agent (sulfur). Additional characterization of the synthesized copolymer and the obtained cured elastomer were carried out through different techniques, including mass and Fourier-transform infrared spectroscopy and thermogravimetric analysis (TGA), in addition to the rheological and mechanical studies. The results revealed that all the subject copolymers, when applied as a secondary accelerator for the SBR vulcanization reaction, enhanced the rate and the state of the cross-linking process. The findings of this study eruditely recommended that large rubber articles, like tires, could be cured more efficiently and cost-effectively when employing the presented copolymer as a secondary accelerator.</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":"1737 - 1749"},"PeriodicalIF":2.4,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508919","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}

{"title":"Polylactide/polyvinyl acetate blends containing different molecular weights of poly(ethylene glycol)","authors":"Wenxi Cheng,&nbsp;Yuanhang Cao,&nbsp;Wei Miao,&nbsp;Yongjian Zhang,&nbsp;Li Tian,&nbsp;Haowei Lin,&nbsp;Weiqiang Song,&nbsp;Yike Zhang,&nbsp;Tao Wang","doi":"10.1007/s13726-024-01350-5","DOIUrl":"10.1007/s13726-024-01350-5","url":null,"abstract":"<div><p>Polylactide (PLA)/polyvinyl acetate (PVAc)/poly(ethylene glycol) (PEG) blends with different molecular weights of PEG (4000, 10000, and 20000 g/mol) were prepared, and the weight ratio was fixed at 72/18/10 (g/g/g) after the tensile analysis of PLA/PVAc and PLA/PEG blends, and finally the samples were characterized by various methods. The tensile and impact results showed that all the ternary blends were well toughened by PEG, and with the increase of PEG molecular weight, the tensile strength and impact strength increased. Scanning electron microscopy and energy-dispersive X-ray spectroscopy results indicated that 20% (by weight) of PVAc exceeded its solubility limit with PLA, and therefore the excess PVAc was dispersed as nanoparticles in the matrix. When PEG was added, the insoluble amount of PVAc decreased, indicating that the miscibility between PLA and PVAc could be increased by PEG. Differential Scanning Calorimetry results showed that T_m optical microscopy results showed that the number and size of PLA spherulites was peak areas of PLA in PLA/PVAc/PEG blends were smaller than that in PLA/PVAc blend, showing that the crystallinity of PLA was decreased with the addition of PEG in the presence of PVAc, which was confirmed by X-ray diffraction results. Polarization was the smallest in PLA/PVAc/PEG blends. All the ternary blends were transparent and had better visible light transmissions than PLA/PVAc blend. Thermal gravimetric analysis results showed that PLA and its blends had similar thermal stability. Overall, a low-cost PLA-modified material that combined high toughness, strength, and transparency without the need for customization was provided.</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":"1689 - 1699"},"PeriodicalIF":2.4,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529810","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}

{"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 SiO₂ 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 SiO₂ nanoparticles) and cross-linking network between chitosan and SiO₂ nanoparticles. The ultra-fast setting process is attributed to the rapid polymerization of cyanoacrylate and the physical interaction of SiO₂ 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}

{"title":"Synergistic effect of graphene and carbon black on the mechanical and vibration damping characteristics of styrene-butadiene rubber","authors":"Sivakumar Chandramohan, Muralidharan Vaithiyanathan, Bikash Chandra Chakraborty, Murali Manohar Dharmaraj","doi":"10.1007/s13726-024-01349-y","DOIUrl":"https://doi.org/10.1007/s13726-024-01349-y","url":null,"abstract":"<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 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"18 1","pages":""},"PeriodicalIF":3.1,"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}

{"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}

{"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}