Polymer International最新文献

{"title":"Fabrication of polylactide composites with silver nanoparticles by sputtering deposition and their antimicrobial and antiviral applications","authors":"Valeriy Demchenko,&nbsp;Yevgen Mamunya,&nbsp;Illia Sytnyk,&nbsp;Maksym Iurzhenko,&nbsp;Igor Krivtsun,&nbsp;Nataliya Rybalchenko,&nbsp;Krystyna Naumenko,&nbsp;Liubov Artiukh,&nbsp;Marek Kowalczuk,&nbsp;Olena Demchenko,&nbsp;Andrii Marynin","doi":"10.1002/pi.6707","DOIUrl":"https://doi.org/10.1002/pi.6707","url":null,"abstract":"<p>Silver-containing composites formed by sputtering deposition on the surface of polylactide (PLA) films have been developed; they contain a layer of silver nanoparticles of different thicknesses depending on the deposition time, namely 1, 3 and 5 min. It was found that with a deposition time of 5 min a layer with a thickness of <i>ca</i> 100 nm is formed. The average size of the Ag nanoparticles is 5.9 nm, and the average specific surface area <i>S</i>_sp is 97 m² g⁻¹. The samples obtained were characterized by wide-angle X-ray scattering, TEM, TGA and DSC and their antimicrobial, antiviral and cytotoxic properties were studied as well. It was found that the thinnest layer of silver (deposited for 1 min) has the greatest effect on the PLA's heat resistance and glass transition temperature. PLA-Ag composites formed by silver sputtering deposition show antimicrobial activity against the studied test cultures of <i>Staphylococcus aureus</i>, <i>Escherichia coli</i> and <i>Pseudomonas aeruginosa</i>, and the activity of the samples increases with increasing duration of silver deposition. PLA-Ag composites formed by silver deposition for 5 min had a weak virucidal effect against herpes simplex virus type 1 and influenza virus type A. Irrespective of the sputtering time of silver the composites obtained were not cytotoxic; at a dilution of 1:10 and more they did not significantly inhibit the viability of MDCK, BHK and Hep-2 cells. © 2025 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 3","pages":"207-216"},"PeriodicalIF":2.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anti-tumoural activity of 3D printed fluorohydroxyapatite–polylactic acid scaffolds combined with graphene oxide and doxorubicin","authors":"Maissa Agsous,&nbsp;Khireddine Hafit,&nbsp;Sabeha Yala,&nbsp;Busra Oktay,&nbsp;Ayşe Betül Bingöl,&nbsp;İlkay Şenel,&nbsp;Cem Bülent Üstündağ","doi":"10.1002/pi.6743","DOIUrl":"https://doi.org/10.1002/pi.6743","url":null,"abstract":"<p>This study focuses on the synthesis of fluorohydroxyapatite (FHA), and the realization of scaffolds by 3D printing using polylactic acid (PLA) as polymer and graphene oxide (GO). The synthesis of FHA was carried out by the usual sol–gel method. The realization of the 3D scaffold was achieved with the 3D printing method. Four scaffolds were printed with PLA: the first was made with FHA and PLA (FHA/PLA), the second was made with GO in addition to FHA and PLA (FHA/PLA/GO), and the third and fourth ones were the FHA/PLA and FHA/PLA/GO scaffolds coated with electrosprayed hydrogel solution of doxorubicin (DOX) and polyvinyl alcohol (PVA): FHA/PLA/DOX/PVA and FHA/PLA/GO/DOX/PVA. The FHA and GO powders were characterized using Fourier transform infrared analysis and X-ray diffraction analysis. A dissolution study was carried out with different contents of PVA (2.5%, 3% and 4%) to identify the scaffold with the best drug release profile. The 3% w/w PVA hydrogel solution was the best, so the drug release kinetics and drug release mechanism were studied using the most famous mathematical models: zero-order model, Higuchi's model and Korsmeyer–Peppas model (power law model). The porosity of the 3D printed scaffolds was assessed by SEM and, finally, the cellular response of each scaffold on the viability of CDD human fibroblast cells was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The sol–gel synthesis produces FHA, used in the realization of the scaffolds. The scaffolds have mixed porosity (macropores and micropores) promoting cell adhesion and proliferation, as shown by the results of the MTT assay. The addition of GO decreases the cell viability but keeps the scaffolds still biocompatible, and adding both DOX and GO to the FHA/PLA scaffolds has a negative impact on cell viability because DOX and GO remain toxic at the given percentages. © 2025 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 3","pages":"277-285"},"PeriodicalIF":2.9,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Special issue. Antimicrobial biopolymers: from synthesis to application","authors":"Ernesto Oyervides-Muñoz,&nbsp;Eder Iván Martínez-Mora","doi":"10.1002/pi.6719","DOIUrl":"https://doi.org/10.1002/pi.6719","url":null,"abstract":"","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 1","pages":"7-8"},"PeriodicalIF":2.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reinventing the wheel: the importance of knowing the literature","authors":"Timothy E Long","doi":"10.1002/pi.6731","DOIUrl":"https://doi.org/10.1002/pi.6731","url":null,"abstract":"","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 1","pages":"5-6"},"PeriodicalIF":2.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transport of penetrants in polymeric materials","authors":"Chen Chen,&nbsp;Baicheng Mei,&nbsp;Kenneth S Schweizer,&nbsp;Christopher M Evans,&nbsp;Paul V Braun","doi":"10.1002/pi.6733","DOIUrl":"https://doi.org/10.1002/pi.6733","url":null,"abstract":"<p>Transport phenomena of chemical species in polymers underpin many applications. This mini-review discusses several key transport scenarios in polymer gels, melts and crosslinked polymer networks. Transport mechanisms of a wide variety of penetrant and polymer chemistries are discussed via activated hopping theory and cover across the rubbery, intermediate/deeply supercooled and glassy states of polymers. Moreover, we also discuss the ionic conductivity in polymer electrolytes, emphasizing the relationship between ion diffusion and the segmental relaxation of polymers and highlighting current challenges in the community. Finally, potential research directions are suggested concerning how external fields, such as mechanical force fields, active matter and self-propelling particles, affect the particle transport in polymers. This mini-review offers a general overview of motivations for studying penetrant transports in polymers and diverse mechanisms involved. © 2024 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 3","pages":"199-206"},"PeriodicalIF":2.9,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New insights into transreaction mechanism between poly (ethylene terephthalate) and bisphenol A polycarbonate in melt","authors":"Pavel A. Mikhaylov,&nbsp;Marina P. Filatova,&nbsp;Valeriy G. Kulichikhin","doi":"10.1002/pi.6727","DOIUrl":"https://doi.org/10.1002/pi.6727","url":null,"abstract":"<p>In the present study, the macromolecular chain composition of copolymers prepared by the reactive blending of poly(ethylene terephthalate) (PET) and bisphenol A polycarbonate (PC) in the presence of Ti(OBu)₄ catalyst was tested using ¹H and ¹³C NMR spectroscopy. The NMR spectra were meticulously analyzed across all regions, revealing unexpected results that provide new insights into the transreaction mechanism occurring between these two polymers in the melt phase. It was found that only two primary reactions occurred: the formation of a bisphenol A terephthalate bond accompanied by the release of ethylene carbonate and the formation of an aliphatic–aromatic ether bond with the release of CO₂. The release of ethylene carbonate during the PET-PC blending led to a loss of ethylene glycol (EG). The kinetics of EG loss and ether bond formation were examined. A new transreaction mechanism for PET-PC reactive blending is proposed. © 2024 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 4","pages":"346-352"},"PeriodicalIF":2.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid nanoparticle array fabricated using injection-molded nanostructure","authors":"Hwa Jin Oh,&nbsp;Zheng Min Huang,&nbsp;Chul Kang,&nbsp;Young Seok Song","doi":"10.1002/pi.6728","DOIUrl":"https://doi.org/10.1002/pi.6728","url":null,"abstract":"<p>Now that well-ordered nanoparticles can yield a promising performance in various fields, spatially regular arrangement of particles is a key requirement for nanoparticle-embedded engineering materials and devices. Here, we demonstrate a feasible, robust method where nanoparticles can be regularly distributed and encapsulated. Polymeric substrates with different sized nanoholes were injection-molded by controlling mold-wall temperature in a spatial and temporal manner. A hybrid structure of nanoparticles was constructed by binding quantum dots with metal nanoparticles, and they were filled into the nanoholes using the knife coating process. The morphology of the nanostructure prepared via the molding process and the nanoparticle array was analyzed using a scanning electron microscope and a transmission electron microscope. Fluorescence emission of the hybrid nanostructure was measured. The finding showed that the strategic approach introduced in this study could allow fabrication of hybrid nanoparticle structures with good processability and productivity. © 2024 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 4","pages":"371-376"},"PeriodicalIF":2.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shape memory polyurethane synthesis using glycerol as chain extender for biomedical applications","authors":"Serap Başkır,&nbsp;Alican Onur Cankaya,&nbsp;Emre Tekay,&nbsp;Berkay Erenay,&nbsp;Bora Garipcan,&nbsp;Özgür Kocatürk","doi":"10.1002/pi.6725","DOIUrl":"https://doi.org/10.1002/pi.6725","url":null,"abstract":"<p>Incorporation of shape memory polymers into biomedical devices is an attractive option due to their notable advantages of low cost, biocompatibility, tunable degradability, patient-specific design and adjustable mechanical and thermal properties. Shape memory polyurethanes are particularly attractive due to their extensive temperature range for shape recovery as well as the ability to fine-tune the glass transition temperature. This study aimed to synthesize a shape memory polyurethane using glycerol as chain extender with a glass transition temperature within a suitable temperature range for biomedical applications. The results showed that the triggering temperatures for the synthesized samples change between 63.95 °C and 88.21 °C. Shape memory properties were investigated for the temperature range 40–75 °C. Shape recovery times were found to be substantial with increasing temperature with ~102 s at 40 °C and ~1 s at 75 °C. Shape fixity and shape recovery rates for the same temperature ranges were 77.8% and 85.6% at 40 °C and 100% and 100% for 75 °C. The cytotoxicity assay indicates promising biocompatibility of the synthesized material for biomedical purposes. Overall, the synthesized polymers were found to be a potential candidate for biomedical applications such as stents, aneurysm filling or occlusion devices. © 2024 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 4","pages":"336-345"},"PeriodicalIF":2.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfocontaining polyelectrolyte cryogels as metamaterials for energy storage devices","authors":"Olga D Iakobson,&nbsp;Natalia N Shevchenko,&nbsp;Svetlana G Laishevkina,&nbsp;Elena M Ivan'kova,&nbsp;Alexey I Volkov,&nbsp;Veniamin V Kondratiev","doi":"10.1002/pi.6729","DOIUrl":"https://doi.org/10.1002/pi.6729","url":null,"abstract":"<p>A set of ionic cryogels based on the biocompatible zwitterionic polyelectrolyte <i>N</i>-(3-sulfopropyl)-<i>N</i>-(methacryloxyethyl)-<i>N</i>,<i>N</i>-dimethylammonium betaine and a second comonomer of a different nature (from the class of acrylates, acetates or sulfonic acids) is successfully synthesized. The variation of the nature of the comonomer used allows a material to be obtained with controlled pore sizes and hierarchical porosity as proved by SEM, optical microscopy and N₂ adsorption–desorption experiments. The compositions of cryogels with good adhesive properties to the electrode, as well as effective ion exchange during an electrochemical reaction inside the cryogels, which is shown by reversible copper recharge processes after doping a cryogel with copper ions, are determined. Thus, cryogels that meet the primary requirements for a material for use as polymer electrolytes for batteries are synthesized and characterized. © 2024 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 4","pages":"377-385"},"PeriodicalIF":2.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified guaiacol-based benzoxazines for optical, aggregation-induced emission and corrosion-resistant coating applications","authors":"Arjitha Saravanamuthu,&nbsp;Mohamed Mydeen Khaja Najimudeen,&nbsp;Krishnasamy Balaji,&nbsp;Kailasam Saravana Mani,&nbsp;Rathika Govindasamy,&nbsp;Alagar Muthukaruppan","doi":"10.1002/pi.6726","DOIUrl":"https://doi.org/10.1002/pi.6726","url":null,"abstract":"<p>Two new kinds of modified bifunctional and trifunctional guaiacol, namely 4,4′-(bis(4-fluorophenyl)methylene)bis(2-methoxyphenol) (BBM) and 4,4′-((2-hydroxy-4-methoxyphenyl)(phenyl)methylene)bis(2-methoxyphenol) (HBM), were synthesized using guaiacol with respective keto derivatives under appropriate experimental conditions. Two series of benzoxazines were developed with BBM and HBM using various amines (dodecylamine (dda), octadecylamine (oda), furfurylamine (ffa), aniline (a) and 4-fluoroaniline (fa)) with paraformaldehyde through Mannich condensation with a view to utilize them for anticorrosive and optical resistant coating applications. The molecular structures of the synthesized precursors and benzoxazine monomers were characterized using appropriate analytical techniques. The polymerization temperature of the benzoxazines was assessed using differential scanning calorimetry. Among the benzoxazine monomers synthesized, the monomer HBM-fa exhibits the lowest curing temperature (217 °C). Data obtained from thermogravimetric analysis indicated that the polybenzoxazines poly(BBM-ffa) and poly(HBM-ffa) possess higher thermal stability (455 and 425 °C) and higher char yield (54% and 60%) than the other polybenzoxazines. In both series, octadecylamine-based polybenzoxazines (BBM-oda and HBM-oda) exhibited the highest values of water contact angle of 148° and 149° respectively. Additionally, the benzoxazines showed aggregation-induced emission properties during fluorescence studies. Morphological analyses using different analytical techniques on selected polybenzoxazines were carried out before and after the corrosion process. Results from corrosion studies, i.e. Tafel and Nyquist plots, implied that the polybenzoxazines can be used as effective coating material to protect mild steels from corrosion. Data from different studies suggest that the developed benzoxazines can be used in the form of optical and anticorrosion coatings under thermally harsh and moist environments. © 2024 Society of Chemical Industry.</p>","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 4","pages":"353-370"},"PeriodicalIF":2.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}