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Qadikolaei ZM, Rabiee SM, Gholipour-Kanani A. Synthesis and characterization of mupirocin-LDH/PVA nanofibrous composite as a dual-carrier drug release system. Int J Biol Macromol 2024; 267:131378. [PMID: 38580023 DOI: 10.1016/j.ijbiomac.2024.131378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 03/13/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
Nowadays, nanofibrous structures based on organic and inorganic materials are considered a drug delivery system for the controlled release of antibiotics and other antibacterial agents. The main goal of this research is a combination of the special properties of nanofibrous structure and Mupirocin-loaded Layered double hydroxide (LDH) to obtain a dual-carrier drug release system to provide long term antibacterial properties in wound healing process. Regards, unloaded layered double hydroxide (LDH) and Mupirocin-loaded LDH, which were synthesized by co-precipitation method, were added to Polyvinyl alcohol (PVA) solution in different mass ratio and electrospun using different processing conditions. The physico-chemical characterizations were performed using SEM, FTIR and tensile strength tests. The biological properties of the fabricated nanocomposites were evaluated using antibacterial test and in vitro cell culturing followed by MTT assay. The SEM results showed a bead-less and uniform morphology of nanofibrous composite containing Mupirocin(2.3 wt%)-LDH(15 wt%)/PVA with an average fiber diameter of about 270 ± 58 nm. According to the release study, the maximum release of the mupirocin drug was about 54 % in the first 6 h. The antibiogram analysis exhibited good antibacterial activity of mupirocin-loaded nanocomposite against both bacteria, especially gram-positive one. Finally, MTT assay approved the biocompatibility of the mupirocin-loaded nanocomposite. Overall, the produced nanofibrous composites would be a promising dual-carrier system for controlled release of antibiotic.
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Affiliation(s)
- Zahra Majidi Qadikolaei
- Department of Materials Engineering, Babol University of Technology, P.O. Box: 47148711167, Babol, Iran
| | - Sayed Mahmood Rabiee
- Department of Materials Engineering, Babol University of Technology, P.O. Box: 47148711167, Babol, Iran..
| | - Adeleh Gholipour-Kanani
- Department of Textile Engineering, Science and Research Branch, Islamic Azad University, P.O. Box: 1477893855, Tehran, Iran..
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Asadi V, Marandi A, Kardanpour R, Tangestaninejad S, Moghadam M, Mirkhani V, Mohammadpoor-Baltork I, Mirzaei R. Carbonic Anhydrase-Embedded ZIF-8 Electrospun PVA Fibers as an Excellent Biocatalyst Candidate. ACS OMEGA 2023; 8:17809-17818. [PMID: 37251154 PMCID: PMC10210226 DOI: 10.1021/acsomega.3c00691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
There is a growing concern that the increasing concentration of CO2 in the atmosphere contributes to a potential negative impact on global climate change. To deal with this problem, developing a set of innovative, practical technologies is essential. In the present study, maximizing the CO2 utilization and precipitation as CaCO3 was evaluated. In this manner, bovine carbonic anhydrase (BCA) was embedded into the microporous zeolite imidazolate framework, ZIF-8, via physical absorption and encapsulation. Running as crystal seeds, these nanocomposites (enzyme-embedded MOFs) were in situ grown on the cross-linked electrospun polyvinyl alcohol (CPVA). The prepared composites displayed much higher stability against denaturants, high temperatures, and acidic media than free BCA, and BCA immobilized into or on ZIF-8. During 37 days of storage period study, BCA@ZIF-8/CPVA and BCA/ZIF-8/CPVA maintained more than 99 and 75% of their initial activity, respectively. The composition of BCA@ZIF-8 and BCA/ZIF-8 with CPVA improved stability for consecutive usage in recovery reactions, recycling easiness, and greater control over the catalytic process. The amounts of calcium carbonate obtained by one mg each of fresh BCA@ZIF-8/CPVA and BCA/ZIF-8/CPVA were 55.45 and 49.15 mg, respectively. The precipitated calcium carbonate by BCA@ZIF-8/CPVA reached 64.8% of the initial run, while this amount was 43.6% for BCA/ZIF-8/CPVA after eight cycles. These results indicated that the BCA@ZIF-8/CPVA and BCA/ZIF-8/CPVA fibers could be efficiently applied to CO2 sequestration.
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Morariu S, Brunchi CE, Honciuc M, Iftime MM. Development of Hybrid Materials Based on Chitosan, Poly(Ethylene Glycol) and Laponite ® RD: Effect of Clay Concentration. Polymers (Basel) 2023; 15:polym15040841. [PMID: 36850125 PMCID: PMC9959284 DOI: 10.3390/polym15040841] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
In the context of increasing interest in biomaterials with applicability in cosmetics and medicine, this research aims to obtain and characterize some hybrid materials based on chitosan (CS) (antibacterial, biocompatible, and biodegradable), poly(ethylene glycol) (PEG) (non-toxic and prevents the adsorption of protein and cell) and Laponite® RD (Lap) (bioactive). The rheological properties of the starting dispersions were investigated and discussed related to the interactions developed between components. All samples exhibited gel-like properties, and the storage modulus of CS/PEG dispersion increased from 6.6 Pa to 657.7 Pa by adding 2.5% Lap. Structural and morphological characterization of the films, prepared by solution casting method, was performed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and polarized light microscopy (POM). These analyses proved the incorporation of Lap into CS/PEG films and revealed the morphological changes of the films by the addition of clay. Thereby, at the highest Lap concentration (43.8%), the "house of cards" structure formed by Lap platelets, which incorporate chitosan chains, as evidenced by SEM and POM. Two stages of degradation between 200 °C and 410 °C were evidenced for the films with Lap concentration higher than 38.5%, explained by the existence of a clay-rich phase (given by the clay network) and chitosan-rich one (due to the intercalation of chitosan in the clay network). CS/PEG film with 43.8% Lap showed the highest swelling degree of 240.7%. The analysis of the obtained results led to the conclusion that the addition of clay to the CS/PEG films increases their stability in water and gives them greater thermal stability.
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Bercea M, Plugariu IA, Gradinaru LM, Avadanei M, Doroftei F, Gradinaru VR. Hybrid Hydrogels for Neomycin Delivery: Synergistic Effects of Natural/Synthetic Polymers and Proteins. Polymers (Basel) 2023; 15:polym15030630. [PMID: 36771933 PMCID: PMC9920321 DOI: 10.3390/polym15030630] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/28/2023] Open
Abstract
This paper reports new physical hydrogels obtained by the freezing/thawing method. They include pullulan (PULL) and poly(vinyl alcohol) (PVA) as polymers, bovine serum albumin (BSA) as protein, and a tripeptide, reduced glutathione (GSH). In addition, a sample containing PULL/PVA and lysozyme was obtained in similar conditions. SEM analysis evidenced the formation of networks with porous structure. The average pore size was found to be between 15.7 μm and 24.5 μm. All samples exhibited viscoelastic behavior typical to networks, the hydrogel strength being influenced by the protein content. Infrared spectroscopy analysis revealed the presence of intermolecular hydrogen bonds and hydrophobic interactions (more pronounced for BSA content between 30% and 70%). The swelling kinetics investigated in buffer solution (pH = 7.4) at 37 °C evidenced a quasi-Fickian diffusion for all samples. The hydrogels were loaded with neomycin trisulfate salt hydrate (taken as a model drug), and the optimum formulations (samples containing 10-30% BSA or 2% lysozyme) proved a sustained drug release over 480 min in simulated physiological conditions. The experimental data were analyzed using different kinetic models in order to investigate the drug release mechanism. Among them, the semi-empirical Korsmeyer-Peppas and Peppas-Sahlin models were suitable to describe in vitro drug release mechanism of neomycin sulfate from the investigated hybrid hydrogels. The structural, viscoelastic, and swelling properties of PULL/PVA/protein hybrid hydrogels are influenced by their composition and preparation conditions, and they represent important factors for in vitro drug release behavior.
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Affiliation(s)
- Maria Bercea
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
- Correspondence:
| | - Ioana-Alexandra Plugariu
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Luiza Madalina Gradinaru
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Mihaela Avadanei
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Florica Doroftei
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Vasile Robert Gradinaru
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Bd., 700506 Iasi, Romania
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Bercea M. Bioinspired Hydrogels as Platforms for Life-Science Applications: Challenges and Opportunities. Polymers (Basel) 2022; 14:polym14122365. [PMID: 35745941 PMCID: PMC9229923 DOI: 10.3390/polym14122365] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 12/13/2022] Open
Abstract
Hydrogels, as interconnected networks (polymer mesh; physically, chemically, or dynamic crosslinked networks) incorporating a high amount of water, present structural characteristics similar to soft natural tissue. They enable the diffusion of different molecules (ions, drugs, and grow factors) and have the ability to take over the action of external factors. Their nature provides a wide variety of raw materials and inspiration for functional soft matter obtained by complex mechanisms and hierarchical self-assembly. Over the last decade, many studies focused on developing innovative and high-performance materials, with new or improved functions, by mimicking biological structures at different length scales. Hydrogels with natural or synthetic origin can be engineered as bulk materials, micro- or nanoparticles, patches, membranes, supramolecular pathways, bio-inks, etc. The specific features of hydrogels make them suitable for a wide variety of applications, including tissue engineering scaffolds (repair/regeneration), wound healing, drug delivery carriers, bio-inks, soft robotics, sensors, actuators, catalysis, food safety, and hygiene products. This review is focused on recent advances in the field of bioinspired hydrogels that can serve as platforms for life-science applications. A brief outlook on the actual trends and future directions is also presented.
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Affiliation(s)
- Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iasi, Romania
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Bercea M. Self-Healing Behavior of Polymer/Protein Hybrid Hydrogels. Polymers (Basel) 2021; 14:130. [PMID: 35012155 PMCID: PMC8747654 DOI: 10.3390/polym14010130] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/20/2021] [Accepted: 12/27/2021] [Indexed: 12/17/2022] Open
Abstract
The paper presents the viscoelastic properties of new hybrid hydrogels containing poly(vinyl alcohol) (PVA), hydroxypropylcellulose (HPC), bovine serum albumin (BSA) and reduced glutathione (GSH). After heating the mixture at 55 °C, in the presence of GSH, a weak network is formed due to partial BSA unfolding. By applying three successive freezing/thawing cycles, a stable porous network structure with elastic properties is designed, as evidenced by SEM and rheology. The hydrogels exhibit self-healing properties when the samples are cut into two pieces; the intermolecular interactions are reestablished in time and therefore the fragments repair themselves. The effects of the BSA content, loaded deformation and temperature on the self-healing ability of hydrogels are presented and discussed through rheological data. Due to their versatile viscoelastic behavior, the properties of PVA/HPC/BSA hydrogels can be tuned during their preparation in order to achieve suitable biomaterials for targeted applications.
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Affiliation(s)
- Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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8
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Chitosan-anthracene hydrogels as controlled stiffening networks. Int J Biol Macromol 2021; 185:165-175. [PMID: 34146562 DOI: 10.1016/j.ijbiomac.2021.06.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/24/2021] [Accepted: 06/03/2021] [Indexed: 12/12/2022]
Abstract
In this study, we report the synthesis of single and dual-crosslinked anthracene-functional chitosan-based hydrogels in the absence of toxic initiators. Single crosslinking was achieved through dimerization of anthracene, whereas dual-crosslinked hydrogel was formed through dimerization of anthracene and free radical photopolymerization of methacrylated-chitosan in the presence of non-toxic initiator riboflavin, a well-known vitamin B2. Both single and dual-crosslinked hydrogels were found to be elastic, as was determined through rheological analysis. We observed that the dual-crosslinked hydrogels exhibited higher Young's modulus than the single-crosslinked hydrogels, where the modulus for single and dual-crosslinked hydrogels were measured as 9.2 ± 1.0 kPa and 26 ± 2.8 kPa, respectively resulting in significantly high volume of cells in dual-crosslinked hydrogel (2.2 × 107 μm3) compared to single-crosslinked (4.9 × 106 μm3). Furthermore, we investigated the cytotoxicity of both hydrogels towards 3T3-J2 fibroblast cells through CellTiter-Glo assay. Finally, immunofluorescence staining was carried out to evaluate the impact of hydrogel modulus on cell morphology. This study comprehensively presents functionalization of chitosan with anthracene, uses nontoxic initiator riboflavin, modulates the degree of crosslinking through dimerization of anthracene and free radical photopolymerization, and further modulates cell behavior through the alterations of hydrogel properties.
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Associative interactions between pullulan and negatively charged bovine serum albumin in physiological saline solutions. Carbohydr Polym 2020; 246:116630. [DOI: 10.1016/j.carbpol.2020.116630] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 01/18/2023]
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10
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Palacio DA, Urbano BF, Rivas BL. Polyelectrolyte nanocomposite hydrogels filled with cationic and anionic clays. Carbohydr Polym 2020; 232:115824. [DOI: 10.1016/j.carbpol.2019.115824] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/27/2019] [Accepted: 12/31/2019] [Indexed: 12/11/2022]
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Mandru M, Bercea M, Gradinaru LM, Ciobanu C, Drobota M, Vlad S, Albulescu R. Polyurethane/poly(vinyl alcohol) hydrogels: Preparation, characterization and drug delivery. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.049] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Ren S, Li C, Tan Z, Hou Y, Jia S, Cui J. Carbonic Anhydrase@ZIF-8 Hydrogel Composite Membrane with Improved Recycling and Stability for Efficient CO 2 Capture. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3372-3379. [PMID: 30807136 DOI: 10.1021/acs.jafc.8b06182] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In this study, carbonic anhydrase (CA, EC 4.2.1.1) molecules were embedded into metal-organic frameworks (MOFs) via co-precipitation (CA@ZIF-8), and then these CA@ZIF-8 nanocomposites were encapsulated in the poly(vinyl alcohol) (PVA)-chitosan (CS) hydrogel networks to prepare CA@ZIF-8-PVA-CS composite hydrogels (PVA/CS/CA@ZIF-8) with high activity, stability, and reusability. The immobilization efficiency of CA was greater than 70%, suggesting the high immobilization efficiency. The prepared PVA/CS/CA@ZIF-8 composite membranes displayed excellent higher stability against a high temperature, denaturants, and acid than free CA and CA@ZIF-8. Furthermore, these membranes exhibited an excellent performance for CO2 capture. The amount of calcium carbonate obtained by PVA/CS/CA@ZIF-8 hydrogel membranes was 20- and 1.63-fold than free CA and CA@ZIF-8 composites, respectively. Furthermore, the hydrogel membranes exhibited superior reusability and mechanical strength. The hydrogel membrane maitained 50% of its original activity after 11 cycles. However, CA@ZIF-8 completely lost activity. These results indicated that the PVA/CS/CA@ZIF-8 membranes can be efficiently applied to capture CO2 sequestration.
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Affiliation(s)
- Sizhu Ren
- Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Conghai Li
- Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Zhilei Tan
- Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Ying Hou
- Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Shiru Jia
- Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Jiandong Cui
- Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
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Baron RI, Bercea M, Avadanei M, Lisa G, Biliuta G, Coseri S. Green route for the fabrication of self-healable hydrogels based on tricarboxy cellulose and poly(vinyl alcohol). Int J Biol Macromol 2019; 123:744-751. [DOI: 10.1016/j.ijbiomac.2018.11.107] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/25/2018] [Accepted: 11/12/2018] [Indexed: 12/31/2022]
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14
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Bercea M, Gradinaru LM, Mandru M, Tigau DL, Ciobanu C. Intermolecular interactions and self-assembling of polyurethane with poly(vinyl alcohol) in aqueous solutions. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Bercea M, Wolf BA. Intrinsic Viscosities of Polymer Blends: Sensitive Probes of Specific Interactions between the Counterions of Polyelectrolytes and Uncharged Macromolecules. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01422] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Maria Bercea
- “Petru
Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Bernhard A. Wolf
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
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16
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Morariu S, Bercea M, Brunchi CE. Influence of Laponite RD on the properties of poly(vinyl alcohol) hydrogels. J Appl Polym Sci 2018. [DOI: 10.1002/app.46661] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Simona Morariu
- ″Petru Poni″ Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley; Iasi 700487 Romania
| | - Maria Bercea
- ″Petru Poni″ Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley; Iasi 700487 Romania
| | - Cristina-Eliza Brunchi
- ″Petru Poni″ Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley; Iasi 700487 Romania
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17
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Palacio DA, Urbano BF, Rivas BL. Hydrogels based on alkylated chitosan and polyelectrolyte copolymers. J Appl Polym Sci 2018. [DOI: 10.1002/app.46556] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Daniel A. Palacio
- Polymer Department, Faculty of Chemistry; University of Concepcion; Casilla 160-C, Concepción Chile
| | - Bruno F. Urbano
- Polymer Department, Faculty of Chemistry; University of Concepcion; Casilla 160-C, Concepción Chile
| | - Bernabé L. Rivas
- Polymer Department, Faculty of Chemistry; University of Concepcion; Casilla 160-C, Concepción Chile
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18
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Affiliation(s)
- Mirela Teodorescu
- Laboratory of Electroactive Polymers and Plasmochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, Iasi, Romania
| | - Maria Bercea
- Laboratory of Electroactive Polymers and Plasmochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, Iasi, Romania
| | - Simona Morariu
- Laboratory of Electroactive Polymers and Plasmochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, Iasi, Romania
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19
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Morariu S, Bercea M, Teodorescu M, Avadanei M. Tailoring the properties of poly(vinyl alcohol)/poly(vinylpyrrolidone) hydrogels for biomedical applications. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.09.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Rheological investigation of poly(vinyl alcohol)/poly(N-vinyl pyrrolidone) mixtures in aqueous solution and hydrogel state. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-1040-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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21
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Teodorescu M, Morariu S, Bercea M, Săcărescu L. Viscoelastic and structural properties of poly(vinyl alcohol)/poly(vinylpyrrolidone) hydrogels. RSC Adv 2016. [DOI: 10.1039/c6ra04319d] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Physical hydrogels were obtained by freezing/thawing of aqueous solutions of 15% poly(vinyl alcohol) (PVA)/poly(vinylpyrrolidone) (PVP) mixtures with different ratios between the polymers.
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Affiliation(s)
- Mirela Teodorescu
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- 700487 Iasi
- Romania
| | - Simona Morariu
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- 700487 Iasi
- Romania
| | - Maria Bercea
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- 700487 Iasi
- Romania
| | - Liviu Săcărescu
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- 700487 Iasi
- Romania
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Morariu S, Bercea M, Brunchi CE. Effect of Cryogenic Treatment on the Rheological Properties of Chitosan/Poly(vinyl alcohol) Hydrogels. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b03088] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Simona Morariu
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Maria Bercea
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Cristina-Eliza Brunchi
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487, Iasi, Romania
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23
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Bercea M, Bibire EL, Morariu S, Teodorescu M, Carja G. pH influence on rheological and structural properties of chitosan/poly(vinyl alcohol)/layered double hydroxide composites. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.07.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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