Article
Biochemistry & Molecular Biology
Dylan D. Edmundson, Richard R. Gustafson, Anthony B. Dichiara
Summary: In this research, monodisperse lignin nanoparticles (LNPs) were synthesized using acoustic irradiation. The particle size distribution and colloidal stability of LNPs were adjusted by varying solution pH and ultrasonication energy. The synthesized LNPs were incorporated into poly (vinyl) alcohol (PVA) to prepare thin and flexible nanocomposite films, which exhibited higher UV absorption ability and enhanced strength.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Materials Science, Composites
Linhong Li, Yue Qin, Hao Wang, Maohua Li, Guichen Song, Yuming Wu, Xianzhe Wei, Zulfiqar Ali, Jian Yi, Shulin Song, Cheng-Te Lin, Nan Jiang, Jinhong Yu
Summary: Highly thermal conductive polymer composites consisting of ND-OH and PVA were reported, with the interfacial properties influencing thermal conductivity. The interface strength between matrix and filler dominates thermal conductivity at low content, while filler-filler interaction dominates at high loadings. The PVA/ND-OH composite exhibited an ultrahigh thermal conductivity of 18.98 W m(-1) K-1 at 90 wt% ND-OH, showing potential for thermal management in next-generation electronic products.
COMPOSITES COMMUNICATIONS
(2021)
Article
Polymer Science
Tomoki Hayashi, Kenji Kinashi, Wataru Sakai, Naoto Tsutsumi, Ayaka Fujii, Seisuke Inada, Hiroshi Yamamoto
Summary: Spin-trapping ESR and GPC analyses were used to study the thermal degradation mechanisms of PVA, revealing the production of radical intermediates and the occurrence of cross-linking reactions at temperatures above 100°C. Main chain scission was also observed significantly around 200°C, indicating the importance of the elimination of .OH in PVA degradation.
Article
Nanoscience & Nanotechnology
Yi-Xing Sun, Qian Zou, Jing Zhao, Xin-Zheng Li, Han Jiang, Ya-Juan Cai, Xu Yang, Yang Liu, Yi-Bo Li, Ya-Ge Wu, Zi-Hao Yang, Jing-Gang Gai
Summary: In this study, a flexible Ag NPs/chitosan (CS)/PVA nanocomposite with three-dimensional conductive and thermally conductive network architectures was successfully prepared using a straightforward in situ reduction process and vacuum-drying method. The 3D silver pathways formed by attaching to the chitosan fibers endowed the material with simultaneous exceptional thermal conductivity and electromagnetic interference shielding effectiveness. The nanocomposite showed significantly improved thermal conductivity and electromagnetic shielding performance compared to traditional composites.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Andrea Dodero, Maila Castellano, Paola Lova, Massimo Ottonelli, Elisabetta Brunengo, Silvia Vicini, Marina Alloisio
Summary: Poly(vinyl alcohol) nanofibrous mats containing ad hoc synthesized gold nanostructures were prepared via a single-step electrospinning procedure and investigated for their potential applications. Various shapes and sizes of gold nanostructures were studied for their effects on the physical and chemical properties of the resulting mats. The type of nanostructure was found to influence the mesh morphology of the mats, with different shapes leading to thinner well defined or bigger defect-rich nanofibers.
Article
Materials Science, Characterization & Testing
Chul Min Yang, Kiramage Chathuranga, Jong Soo Lee, Won Ho Park
Summary: This study investigated the effect of polyphenolic additives on the thermal decomposition of polymers and compared the influence of different numbers of phenolic hydroxyl groups on the properties of the composite films.
Article
Polymer Science
Seong Baek Yang, Mohammad Rezaul Karim, Jungeon Lee, Jeong Hyun Yeum, Sabina Yeasmin
Summary: Novel poly(vinyl alcohol)/poly(vinyl butyral-vinyl alcohol) films with improved hydrophobicity were prepared by saponification of poly(vinyl acetate)/poly(vinyl butyral) blend films. The saponification process was confirmed by various analysis techniques. The hydrophobicity of the films increased with increasing poly(vinyl butyral) content. The saponified films exhibited improved mechanical properties and unique surface characteristics. These films have potential applications in biomaterials, filters, and medical devices.
Article
Nanoscience & Nanotechnology
Jinghao Huo, Guoqiang Zhang, Xinyi Zhang, Xiaoyan Yuan, Shouwu Guo
Summary: Graphene is widely used in heat dissipation due to its high in-plane thermal conductivity and excellent mechanical properties. However, its poor cross-plane thermal conductivity limits its use in certain electronic applications. In this study, fluorinated graphene oxide (FG) with high thermal conductivity is prepared by grafting F atoms onto the surface of graphene oxide using poly(vinylidene fluoride) as a fluorine source. By avoiding the use of dangerous substances such as HF and F-2, FG can be synthesized effectively. The FG is then used to create a FG/PVA composite film with enhanced thermal conductivity, suitable for thermal management in flexible electronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Nicolas Torasso, Alicia Vergara-Rubio, Patricia Rivas-Rojas, Cristian Huck-Iriart, Aitor Larranaga, Alicia Fernandez-Cirelli, Silvina Cerveny, Silvia Goyanes
Summary: This study presents a novel green method to confine and disperse SPIONs inside PVA nanofibers, enhancing arsenic adsorption capacity. Heat treatment rendered the membrane water insoluble while maintaining the active sites of SPIONs. Analysis using electron microscopies and X-ray scattering confirmed the excellent dispersion of SPIONs within the nanofibers.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Ming Hang Tai, Babu Cadiam Mohan, Zhiyi Yao, Chi-Hwa Wang
Summary: The superhydrophobic composite aerogel prepared from industrial waste-derived leached carbon black waste and polyvinyl alcohol showed excellent oil-water separation performance and selective adsorption capabilities, making it an effective solution for the remediation of oil spills.
Article
Materials Science, Ceramics
Zhila Shaterabadi, Gholamreza Nabiyouni, Zakye Mirali Asadi, Guillermo R. Iglesias, Meysam Soleymani
Summary: This study investigates the effect of zinc substitution on the magnetic properties and heat-generating ability of PVA-coated zinc-substituted cobalt ferrite nanoparticles (PZC NPs). The results reveal the significant impact of the interrelation between chemical composition and magnetic field strength on the heating efficiency of the nanoparticles.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Monalisa Halder, Shubhadip Atta, Ranjita Sinha, Ajit Kumar Meikap
Summary: Investigation on charge transport mechanism in manganese ferrite loaded polyvinyl alcohol nanocomposite film reveals enhanced conductivity, higher dielectric constant, and low tangent loss. The current voltage characteristics can be explained using the thermionic emission and Schottky emission models, with presence of oxygen-related defect states in the polymeric system.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Yingxu Song, Sumei Zhang, Jian Kang, Jinyao Chen, Ya Cao
Summary: Annealing PVA films at different temperatures affects the water absorption, leading to changes in the formation of PVA-iodine complexes. The amount of PVA segments with moderate hydration has a significant impact on the complexation process.
Article
Chemistry, Multidisciplinary
Phasit Petisiwaveth, Rujira Wanotayan, Nuanpen Damrongkijudom, Sumalee Ninlaphruk, Sumana Kladsomboon
Summary: A colorimetric liquid sensor based on a PVA/AgNPs hybrid nanomaterial was developed for gamma radiation detection in the range of 0-100 Gy. The sensor showed excellent accuracy, sensitivity, and stability, and has the potential to be an alternative gamma sensor for routine dose monitoring.
Article
Polymer Science
Hamid Reza Hedayati, Manounchehr Khorasani, Mostafa Ahmadi, Nicholas Ballard
Summary: In this study, well-defined and linear PVAc was synthesized using RAFT polymerization method, overcoming the difficulties in controlling molecular weight distribution during the hydrolysis of PVAc. This offers a potential route to the production of PVAc and PVA products with uniform properties.
Article
Electrochemistry
Mihaela Tertis, Petra-Lia Sirbu, Maria Suciu, Diana Bogdan, Ovidiu Pana, Cecilia Cristea, Ioan Simon
Summary: In this study, a biomimetic electrochemical sensor based on molecularly imprinted polymer (MIP) containing chitosan and graphene oxide was developed for the direct and selective detection of serotonin. The sensor exhibited a wide dynamic range, good stability, reusability, and excellent selectivity, making it promising for biomedical applications.
Article
Chemistry, Physical
Willi Andrei Uriciuc, Adina Bianca Bosca, Anida-Maria Babtan, Horatiu Vermesan, Cecilia Cristea, Mihaela Tertis, Petru Pascuta, Gheorghe Borodi, Maria Suciu, Lucian Barbu-Tudoran, Catalin Ovidiu Popa, Aranka Ilea
Summary: This study explores the correct processing of Co-Cr alloys to preserve their properties and safely use them in contact with oral cavity tissues. The electrochemical behavior of five commercial Co-Cr dental alloys with different compositions was analyzed, and their characteristics were determined. The study found that alloys with higher tungsten and iron content exhibited a stronger tendency for anodization, and new oxide compounds appeared after heat treatment. In conclusion, processing Co-Cr alloys through melting and casting remains a viable method that can support innovation in the context of digitalization of the manufacturing process.
Article
Biophysics
Loredana F. Leopold, Cristina Coman, Doina Clapa, Ioana Oprea, Alexandra Toma, Stefania D. Iancu, Lucian Barbu-Tudoran, Maria Suciu, Alexandra Ciorita, Adrian I. Cadis, Laura Elena Muresan, Ioana Mihaela Perhaita, Lucian Copolovici, Dana M. Copolovici, Florina Copaciu, Nicolae Leopold, Dan C. Vodnar, Vasile Coman
Summary: This study evaluated the effects of large-scale TiO2 and ZnO nanoparticles on in vitro-grown soybean plants. The results showed that ZnO nanoparticles exhibited higher toxicity compared to TiO2, leading to negative effects on plant growth and metabolic processes.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Multidisciplinary Sciences
Geza Lazar, Fran Nekvapil, Sanja Matic-Skoko, Calin Firta, Dario Vrdoljak, Hana Uvanovic, Lucian Barbu-Tudoran, Maria Suciu, Luka Glamuzina, Branko Glamuzina, Regina Mertz-Kraus, Simona Cinta Pinzaru
Summary: This study evaluated the correlation between spectroscopic and chemical data with the lifetime development and movement pattern of gilthead seabream otoliths from different environments. Raman spectroscopy provided characteristic bands that were used to track the signal variability. The results showed that the Raman spectra can be used as a complementary tool for inferring fish migration or origin.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Klara Magyari, Alexandra Dreanca, Istvan Szekely, Andra Popescu, Alexandra Feraru, Emoke Pall, Tamas Gyulavari, Maria Suciu, Mihai Cenariu, Emma Bobu, Lucian Baia, Monica Baia
Summary: Alginate-pullulan composites with good biocompatibility and bioactivity were synthesized and evaluated in vitro. The composite promoted cell growth, but its application was limited by the appearance of calcium oxalate on the surface.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Pharmacology & Pharmacy
Daria Stoia, Madalina Nistor, Maria Suciu, Raluca Borlan, Andreea Campu, Dumitrita Rugina, Dana Maniu, Simion Astilean, Monica Focsan
Summary: Diabetic retinopathy (DR) is a serious complication of diabetes that can cause blindness. In this study, a light-responsive targeted polymeric microcapsule was developed to encapsulate a near infrared (NIR) photoactive fluorophore - Indocyanine Green, and conjugated with Avastin to form an efficient in vitro targeted drug delivery system. The microcapsules showed biocompatibility and the ability to generate heat under NIR laser irradiation, leading to the release of Avastin. The Avastin-conjugated microcapsules were validated for in vitro targeted drug delivery and release under simulated DR conditions.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Chemistry, Multidisciplinary
Anca D. Stoica, Bogdan Sevastre, Maria Suciu, Alina Elena Parvu, Marcel Parvu, Vlad Alexandru Toma, Ioana Roman, Camelia Dobre
Summary: This study aimed to investigate the antioxidant and protective effects of Plantago sempervirens extract on the follicular pool. The results showed that the extract could alleviate the reduction of follicular reserve, decrease in FSH and estrogen levels caused by cyclophosphamide, and maintain a normal estrus cycle.
APPLIED SCIENCES-BASEL
(2023)
Article
Pharmacology & Pharmacy
Geza Lazar, Fran Nekvapil, Branko Glamuzina, Tudor Tamas, Lucian Barbu-Tudoran, Maria Suciu, Simona Cinta Pinzaru
Summary: Researchers proposed a new drug formulation for slow release by using a biogenic carrier from blue crab carapace. The drug showed a slow-releasing pattern in acidic pH environments similar to neutral conditions, indicating its viability as an oral delivery alternative for anticancer drugs to reach the lower gastrointestinal tract.
Article
Microbiology
Alexandra Ciorita, Maria Suciu, Maria Coros, Codruta Varodi, Florina Pogacean, Lidia Magerusan, Valentin Mirel, Raluca-Ioana Stefan-van Staden, Stela Pruneanu
Summary: Bacterial infections pose a major threat due to antibiotic resistance, driving the need for new drugs or improved resources. Nanomaterials with high surface area and bactericidal properties show promise in combatting microbial infections. In this study, graphene decorated with silver nanoparticles (5 wt% Ag) exhibited inhibitory capacity against S. aureus and E. coli. The hybrid material was incubated with a high-efficiency particulate air (HEPA) filter, resulting in a modified filter with enhanced antibacterial properties, particularly against Gram-negative bacteria. The modified HEPA filter significantly affected the colony forming unit capacity of bacteria, suggesting its potential to improve existing technology.
Article
Chemistry, Multidisciplinary
Cigdem Tuc Altaf, Tuluhan Olcayto Colak, Arpad Mihai Rostas, Adriana Popa, Dana Toloman, Maria Suciu, Nurdan Demirci Sankir, Mehmet Sankir
Summary: Three different morphologies of ZnO nanostructures, nanoflower (NF), nano sponge (NS), and nano urchin (NU), were successfully synthesized via a mild hydrothermal method. Annealing at different temperatures showed that ZnO NS performed significantly better in terms of degradation kinetics compared to the other morphologies. The photocatalytic activity of ZnO nanocatalysts was found to be influenced by defect structure, pore diameter, and crystallinity. The ZnO NS-800 ? nanocatalyst exhibited a rate constant of 35.6 x 10(-3) min(-1) and excellent stability after a 5-cycle photocatalytic degradation of RhB.
Article
Pharmacology & Pharmacy
Ioana Madalina Buhazi, Ioana-Georgeta Grosu, Xenia Filip, Anca Petran, Septimiu Cassian Tripon, Calin Gabriel Floare, Maria Suciu
Summary: This study aimed to analyze the potential use of SiO2 nanoparticles coated with biocompatible polydopamine (SiO2@PDA) as a potential chemotherapeutic drug carrier. The results showed that concentrations above 10-100 μg/mL SiO2@PDA exhibited the best biocompatibility on human melanoma cells and could serve as a potential drug carrier template for targeted melanoma cancer treatment.
THERAPEUTIC DELIVERY
(2023)
Article
Chemistry, Analytical
Florina Truta, Alvaro Garcia Cruz, Mihaela Tertis, Christopher Zaleski, Gyako Adamu, Natalie S. Allcock, Maria Suciu, Maria-Georgia Stefan, Bela Kiss, Elena Piletska, Karolien De Wael, Sergey A. Piletsky, Cecilia Cristea
Summary: A highly sensitive and portable electrochemical sensor based on molecularly imprinted nanoparticles (nanoMIPs) was developed for the selective determination of amphetamine in street samples. The sensor employed nanoMIPs designed to specifically recognize amphetamine, which were then synthesized using solid phase synthesis. The nanoMIPs were immobilized onto screen-printed carbon electrodes using a composite film containing chitosan, nanoMIPs, and graphene oxide. Incorporation of ferrocenylmethyl methacrylate in nanoMIPs enabled electrochemical detection, with the signal dependent on the interaction between amphetamine and nanoMIPs. The sensor exhibited high sensitivity and satisfactory recoveries when tested with street samples, and the results were validated using UPL-MS/MS.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Mihaela Tertis, Manuela Za, Alexandra Pusta, Maria Suciu, Diana Bogdan, Cecilia Cristea
Summary: In this study, a nanostructured platform based on graphite and gold was developed for the rapid and reliable detection of gluten in food samples. The platform was used to construct an aptasensor for the selective detection of gliadin, the component of gluten responsible for triggering celiac disease. The aptasensor was able to detect this analyte in a concentration range of 10-50000 ng/L with a limit of detection of 3.4 ng/L. It proved to be sensitive and selective, detecting gluten even in gluten-free products such as rice flour, carob flour, soy flour, starch, and gluten-free breakfast cereals.
MICROCHEMICAL JOURNAL
(2023)
Article
Medicine, General & Internal
Codruta Eliza Ille, Elena-Alina Moaca, Maria Suciu, Lucian Barbu-Tudoran, Meda-Lavinia Negrutiu, Anca Jivanescu
Summary: Three CAD/CAM materials, Cerasmart (CS), Straumann Nice (SN), and Tetric CAD (TC), were assessed for biocompatibility and sustainability on human fibroblasts and keratinocytes cells. After being exposed to an acidic environment, CS and SN induced decreased mitochondrial activity and plasma membrane damage in fibroblasts, while TC showed necrotic effects. Oxidative stress was not observed in the cells treated with these materials. SEM analysis revealed that fibroblasts adhered well to all tested CAD/CAM materials, with CS and SN exhibiting weaker adhesion compared to TC. Overall, these materials are biocompatible and support cell attachment and dispersion.
MEDICINA-LITHUANIA
(2023)
Article
Polymer Science
Maximilian George Dindelegan, Violeta Pascalau, Maria Suciu, Bogdan Neamtu, Maria Perde-Schrepler, Cristina Maria Blebea, Alma Aurelia Maniu, Violeta Necula, Anca Dana Buzoianu, Miuta Filip, Alexandra Csapai, Catalin Popa
Summary: This study investigates a biopolymer-lipid hybrid microcarrier for the treatment of sensorineural hearing loss. Dexamethasone-loaded microparticles were prepared using a combination of biopolymers and lipid components, exhibiting physical and chemical stability. The results demonstrate sustained release of dexamethasone and protective effects on inner ear sensory cells.
