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Morariu S, Avadanei M, Nita LE. Effect of pH on the Poly(acrylic acid)/Poly(vinyl alcohol)/Lysozyme Complexes Formation. Molecules 2023; 29:208. [PMID: 38202791 PMCID: PMC10780248 DOI: 10.3390/molecules29010208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/20/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
The interactions between poly(acrylic acid) (PAA), poly(vinyl alcohol) (PVA), and lysozyme (Lys) in an aqueous environment at pHs of 2, 4, and 7.4 were discussed considering the experimental data obtained by turbidimetry, electrokinetic and rheological measurements, and FTIR analysis. It was found that the increase in PAA amount reduces the coacervation zone by shifting the critical pHcr1to higher values while the critical pHcr2 remains unchanged. The coacervation zone extended from 3.1-4.2 to 2.9-4.7 increasing the Lys concentration from 0.2% to 0.5%. The zeta potential measurements showed that the PAA-PVA-Lys mixture in water is the most stable in the pH range of 4.5-8. Zero shear viscosity exhibited deviations from additivity at both investigated pHs, and a maximum value corresponding to a maximum hydrodynamic volume was revealed at PAA weight fractions of 0.4 and 0.5 for pHs of 4 and 7.4, respectively. The binding affinity to Lys of PAA, established by molecular dynamics simulation, was slightly higher than that of PVA. The more stable complex was PAA-Lys formed in a very acidic environment; for that, a binding affinity of -7.1 kcal/mol was determined.
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Affiliation(s)
- Simona Morariu
- “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.A.); (L.E.N.)
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2
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Kononova SV, Kremnev RV, Gubanova GN, Vlasova EN, Popova EN, Vylegzhanina ME, Volkov AY. Effect of Phase Heterogeneity on the Properties of Poly(vinyl alcohol)-Based Composite Pervaporation Membranes. MEMBRANES 2022; 12:1185. [PMID: 36557092 PMCID: PMC9783672 DOI: 10.3390/membranes12121185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
The structure, thermophysical characteristics, and pervaporation properties of composite membranes based on poly(vinyl alcohol) (PVA) are studied in dependence of the film preparation conditions. It is shown that the nature of the supramolecular organization of the composite polymer film determines which of the components of the separated mixtures of toluene and heptane predominantly penetrate through the corresponding pervaporation membrane. The observed structural effects can become more pronounced if the second component of a polymer mixture is purposefully selected (in this case, poly(N,N-dimethylaminoethyl methacrylate) instead of poly(acrylic acid)) or a nano-sized filler that can be well dispersed in the polymer matrix is introduced. Multi-wall carbon nanotubes are introduced into binary PVA-containing polymer blends. The influence of these fillers on the structure and transport properties of the obtained membranes is studied.
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3
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Klivenko A, Orazzhanova L, Mussabayeva B, Yelemessova G, Kassymova Z. Soil structuring using interpolyelectrolyte complexes of water‐soluble polysaccharides. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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4
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Moustafine RI, Viktorova AS, Khutoryanskiy VV. Interpolymer complexes of carbopol® 971 and poly(2-ethyl-2-oxazoline): Physicochemical studies of complexation and formulations for oral drug delivery. Int J Pharm 2019; 558:53-62. [PMID: 30634031 DOI: 10.1016/j.ijpharm.2019.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 12/25/2022]
Abstract
Carbopol® 971 and poly(2-ethyl-2-oxazoline) form hydrogen-bonded interpolymer complexes in aqueous solutions and their complexation is strongly dependent on solution pH. This work investigated the complexation between these polymers in aqueous solutions. The compositions of interpolymer complexes as well as the critical pH values of complexation were determined. The structure of these complexes was studied in solutions using transmission electron microscopy and in solid state using elemental analysis, FTIR spectroscopy and differential scanning calorimetry. Solid compacts were prepared based on interpolymer complexes and physical blends of these polymers and their swelling behaviour was studied in aqueous solutions mimicking the fluids present in the gastrointestinal tract. These materials were used to prepare oral formulations of mesalazine and its release from solid matrices was studied in vitro. It was demonstrated that the complexation between Carbopol® 971 and poly(2-ethyl-2-oxazoline) has a profound effect on the drug release from matrix tablets.
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Affiliation(s)
- Rouslan I Moustafine
- Institute of Pharmacy, Kazan State Medical University, 16 Fatykh Amirkhan Street, 420126 Kazan, Russian Federation.
| | - Anastasiya S Viktorova
- Institute of Pharmacy, Kazan State Medical University, 16 Fatykh Amirkhan Street, 420126 Kazan, Russian Federation
| | - Vitaliy V Khutoryanskiy
- Institute of Pharmacy, Kazan State Medical University, 16 Fatykh Amirkhan Street, 420126 Kazan, Russian Federation; Reading School of Pharmacy, University of Reading, Whiteknights, PO box 224, Reading RG66AD, United Kingdom.
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5
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Khutoryanskiy VV, Smyslov RY, Yakimansky AV. Modern Methods for Studying Polymer Complexes in Aqueous and Organic Solutions. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18050085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Tavakoli J, Mirzaei S, Tang Y. Cost-Effective Double-Layer Hydrogel Composites for Wound Dressing Applications. Polymers (Basel) 2018; 10:E305. [PMID: 30966340 PMCID: PMC6415111 DOI: 10.3390/polym10030305] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/07/2018] [Accepted: 03/08/2018] [Indexed: 12/13/2022] Open
Abstract
Although poly vinyl alcohol-poly acrylic acid (PVA-PAA) composites have been widely used for biomedical applications, their incorporation into double-layer assembled thin films has been limited because the interfacial binding materials negatively influence the water uptake capacity of PVA. To minimize the effect of interfacial binding, a simple method for the fabrication of a double-layered PVA-PAA hydrogel was introduced, and its biomedical properties were evaluated in this study. Our results revealed that the addition of PAA layers on the surface of PVA significantly increased the swelling properties. Compared to PVA, the equilibrium swelling ratio of the PVA-PAA hydrogel increased (p = 0.035) and its water vapour permeability significantly decreased (p = 0.04). Statistical analysis revealed that an increase in pH value from 7 to 10 as well as the addition of PAA at pH = 7 significantly increased the adhesion force (p < 0.04). The mechanical properties-including ultimate tensile strength, modulus, and elongation at break-remained approximately untouched compared to PVA. A significant increase in biocompatibility was found after day 7 (p = 0.016). A higher release rate for tetracycline was found at pH = 8 compared to neutral pH.
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Affiliation(s)
- Javad Tavakoli
- Centre for NanoScale Science and Technology, College of Science and Engineering, Flinders University, Tonsley, SA 5042, Australia.
- The Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley, SA 5042, Australia.
| | - Samaneh Mirzaei
- Stem Cell Technology Research Centre (STRC), 199777555 Tehran, Iran.
| | - Youhong Tang
- Centre for NanoScale Science and Technology, College of Science and Engineering, Flinders University, Tonsley, SA 5042, Australia.
- The Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley, SA 5042, Australia.
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7
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Zuo X, Morlet-Savary F, Schmitt M, Le Nouën D, Blanchard N, Goddard JP, Lalevée J. Novel applications of fluorescent brighteners in aqueous visible-light photopolymerization: high performance water-based coating and LED-assisted hydrogel synthesis. Polym Chem 2018. [DOI: 10.1039/c8py00584b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Commercial fluorescent brighteners are shown to be active photoinitiators in aqueous visible-light photopolymerization.
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Affiliation(s)
- Xiaoling Zuo
- Université de Haute-Alsace
- CNRS
- IS2M UMR 7361
- F-68100 Mulhouse
- France
| | | | - Michael Schmitt
- Université de Haute-Alsace
- CNRS
- IS2M UMR 7361
- F-68100 Mulhouse
- France
| | - Didier Le Nouën
- Université de Haute-Alsace
- Université de Strasbourg
- CNRS
- LIMA
- UMR 7042
| | | | | | - Jacques Lalevée
- Université de Haute-Alsace
- CNRS
- IS2M UMR 7361
- F-68100 Mulhouse
- France
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8
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Swift T, Seaton CC, Rimmer S. Poly(acrylic acid) interpolymer complexes. SOFT MATTER 2017; 13:8736-8744. [PMID: 29119179 DOI: 10.1039/c7sm01787a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Interpolymer complex formation of poly(acrylic acid) with other macromolecules can occur via several mechanisms that vary depending on the pH. At low pH the protonated acid functional group can form bonds with both donor and acceptor moieties, resulting in desolvated structures consisting of two polymers. Complexes were formed in dilute solutions of PAA, functionalised with acenaphthylene, with a range of other polymers including: poly(NIPAM); poly(ethylene oxide) (PEO); poly(dimethylacrylamide) (PDMA); poly(diethyl acrylamide) (PDEAM) poly(vinyl alcohol) (PVA) and poly(vinyl pyrolidinone) (PVP). Fluorescence anisotropy was used to demonstrate complex formation in each case by monitoring the reductions in segmental motion of the chain as the complexes formed. Considerations of the molecular structures of the complexing moieties suggest that solvation energies and pKas play an important role in complex formation.
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Affiliation(s)
- Thomas Swift
- School of Chemistry and Biosciences, University of Bradford, Bradford, West Yorkshire BD7 1DP, UK.
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9
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Caló E, Barros J, Ballamy L, Khutoryanskiy VV. Poly(vinyl alcohol)–Gantrez® AN cryogels for wound care applications. RSC Adv 2016. [DOI: 10.1039/c6ra24573k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cryotropic gelation is a low cost, well-known technique that has been used for decades for the preparation of cryogels based on poly(vinyl alcohol).
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Affiliation(s)
- Enrica Caló
- Reading School of Pharmacy
- University of Reading
- Reading
- UK
| | - Joao Barros
- Reading School of Pharmacy
- University of Reading
- Reading
- UK
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10
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Nurpeissova ZA, Alimkhanova SG, Mangazbayeva RA, Shaikhutdinov YM, Mun GA, Khutoryanskiy VV. Redox- and glucose-responsive hydrogels from poly(vinyl alcohol) and 4-mercaptophenylboronic acid. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Rohatgi CV, Dutta NK, Choudhury NR. Separator Membrane from Crosslinked Poly(Vinyl Alcohol) and Poly(Methyl Vinyl Ether-alt-Maleic Anhydride). NANOMATERIALS 2015; 5:398-414. [PMID: 28347019 PMCID: PMC5312902 DOI: 10.3390/nano5020398] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/08/2015] [Accepted: 03/12/2015] [Indexed: 11/24/2022]
Abstract
In this work, we report separator membranes from crosslinking of two polymers, such as poly vinyl alcohol (PVA) with an ionic polymer poly(methyl vinyl ether-alt-maleic anhydride) (PMVE-MA). Such interpolymer-networked systems were extensively used for biomedical and desalination applications but they were not examined for their potential use as membranes or separators for batteries. Therefore, the chemical interactions between these two polymers and the influence of such crosslinking on physicochemical properties of the membrane are systematically investigated through rheology and by critical gel point study. The hydrogen bonding and the chemical interaction between PMVE-MA and PVA resulted in highly cross-linked membranes. Effect of the molecular weight of PVA on the membrane properties was also examined. The developed membranes were extensively characterized by studying their physicochemical properties (water uptake, swelling ratio, and conductivity), thermal and electrochemical properties using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), thermo-gravimetric analysis (TGA) and electrochemical impedance spectroscopy (EIS). The DSC study shows the presence of a single Tg in the membranes indicating compatibility of the two polymers in flexible and transparent films. The membranes show good stability and ion conductivity suitable for separator applications.
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Affiliation(s)
| | - Naba K Dutta
- Ian Wark Institute, University of South Australia, Mawson Lakes 5095, Australia.
| | - Namita Roy Choudhury
- Ian Wark Institute, University of South Australia, Mawson Lakes 5095, Australia.
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12
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Luo W, Zhang S, Li P, Xu R, Zhang Y, Liang L, Wood CD, Lu Q, Tan B. Surfactant-free CO2-in-water emulsion-templated poly (vinyl alcohol) (PVA) hydrogels. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.02.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Luo W, Xu R, Liu Y, Hussain I, Lu Q, Tan B. Emulsion-templated poly(acrylamide)s by using polyvinyl alcohol (PVA) stabilized CO2-in-water emulsions and their applications in tissue engineering scaffolds. RSC Adv 2015. [DOI: 10.1039/c5ra14345d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Commercially available polymer i.e., polyvinyl alcohol (PVA), is used to produce stable CO2/water emulsions. These emulsions were then used to produce emulsion templated hierarchically porous materials with interesting tissue engineering applications.
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Affiliation(s)
- Wei Luo
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Ran Xu
- Key Laboratory of Molecular Biophysics of Ministry of Education
- School of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yunfei Liu
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Irshad Hussain
- Department of Chemistry
- SBA School of Science & Engineering
- Lahore University of Management Sciences (LUMS)
- Pakistan
| | - Qunwei Lu
- Key Laboratory of Molecular Biophysics of Ministry of Education
- School of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Bien Tan
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
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14
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Khutoryanskaya OV, Morrison PWJ, Seilkhanov SK, Mussin MN, Ozhmukhametova EK, Rakhypbekov TK, Khutoryanskiy VV. Hydrogen-bonded complexes and blends of poly(acrylic acid) and methylcellulose: nanoparticles and mucoadhesive films for ocular delivery of riboflavin. Macromol Biosci 2013; 14:225-34. [PMID: 24106128 DOI: 10.1002/mabi.201300313] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 08/09/2013] [Indexed: 11/08/2022]
Abstract
Poly(acrylic acid) (PAA) and methylcellulose (MC) are able to form hydrogen-bonded interpolymer complexes (IPCs) in aqueous solutions. In this study, the complexation between PAA and MC is explored in dilute aqueous solutions under acidic conditions. The formation of stable nanoparticles is established, whose size and colloidal stability are greatly dependent on solution pH and polymers ratio in the mixture. Poly(acrylic acid) and methylcellulose are also used to prepare polymeric films by casting from aqueous solutions. It is established that uniform films can be prepared by casting from polymer mixture solutions at pH 3.4-4.5. At lower pHs (pH < 3.0) the films have inhomogeneous morphology resulting from strong interpolymer complexation and precipitation of polycomplexes, whereas at higher pHs (pH 8.3) the polymers form fully immiscible blends because of the lack of interpolymer hydrogen-bonding. The PAA/MC films cast at pH 4 are shown to be non-irritant to mucosal surfaces. These films provide a platform for ocular formulation of riboflavin, a drug used for corneal cross-linking in the treatment of keratoconus. An in vitro release of riboflavin as well as an in vivo retention of the films on corneal surfaces can be controlled by adjusting PAA/MC ratio in the formulations.
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Affiliation(s)
- Olga V Khutoryanskaya
- School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, Berkshire, UK
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15
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Cook JP, Goodall GW, Khutoryanskaya OV, Khutoryanskiy VV. Microwave-Assisted Hydrogel Synthesis: A New Method for Crosslinking Polymers in Aqueous Solutions. Macromol Rapid Commun 2012; 33:332-6. [DOI: 10.1002/marc.201100742] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 11/25/2011] [Indexed: 12/29/2022]
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16
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Gopishetty V, Tokarev I, Minko S. Biocompatible stimuli-responsive hydrogel porous membranes via phase separation of a polyvinyl alcohol and Na-alginate intermolecular complex. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31778h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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17
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Khutoryanskiy VV. Advances in Mucoadhesion and Mucoadhesive Polymers. Macromol Biosci 2010; 11:748-64. [DOI: 10.1002/mabi.201000388] [Citation(s) in RCA: 385] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Indexed: 12/25/2022]
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18
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Vasheghani F B, Rajabi FH, Ahmadi MH, Zenooz N. Effect of various types of interaction on the stability of some ternary interpolymer complexes involving poly(ethylene imine), poly(acrylic acid) and poly(ethylene glycol). POLYM INT 2010. [DOI: 10.1002/pi.2941] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Deng L, Wang C, Li ZC, Liang D. Re-examination of the “Zipper Effect” in Hydrogen-Bonding Complexes. Macromolecules 2010. [DOI: 10.1021/ma902601d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lin Deng
- Beijing National Laboratory for Molecular Sciences and the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Chunhao Wang
- Beijing National Laboratory for Molecular Sciences and the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences and the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Dehai Liang
- Beijing National Laboratory for Molecular Sciences and the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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20
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Okubo T, Okamoto J, Tsuchida A. Convectional, sedimentary, and drying dissipative patterns of colloidal suspensions of polymer complexes of poly(acrylic acid) with poly(ethylene glycol) and poly(vinyl pyrrolidone). Colloid Polym Sci 2009. [DOI: 10.1007/s00396-009-2152-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Nita LE, Chiriac AP, Neamtu I, Bercea M. Study of a binary interpenetrated polymeric complex by correlation of rheological parameters with zeta potential and conductivity. Colloids Surf B Biointerfaces 2009; 76:70-5. [PMID: 19896809 DOI: 10.1016/j.colsurfb.2009.10.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 10/07/2009] [Accepted: 10/08/2009] [Indexed: 11/20/2022]
Abstract
The interpenetrated macromolecular chains complexation between poly(aspartic acid) and poly(vinyl alcohol) in aqueous solution it was investigated. The interpolymer complexation process was evaluated through dynamic rheology. The aspects concerning the stability of the tested homopolymers and the prepared interpolymeric complex there were achieved from the evaluation of the aqueous solutions'zeta potential and also by determining the pH influence upon the zeta potential and the conductivity. The data obtained through the rheological dynamic measurements were correlated with the composition of the polymeric mixture, the dependence of zeta potential and conductivity. The study reveals the conditions for the formation of interpenetrated polymeric complex as being a ratio of 70wt.% PAS to 30wt.% PVA at 22 degrees C and 50/50 PAS/PVA ratio at 37 degrees C temperature. From the pH influence upon the zeta potential values it was evidenced the PAS aqueous solution does not reach the isoelectric point. At the same time, PVA solution and the complex PAS/PVA reaches the isoelectric point at strongly acid pH. The better stability of PAS, PVA and their mixture in solution is recorded in the alkaline domain (7.5<or=pH>or=12). The conductivity increases with the rising of the PAS content, pH and temperature. Other characteristics of the prepared interpenetrated polymeric structure, as for example thermal stability, there are also presented.
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Affiliation(s)
- Loredana Elena Nita
- Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, IASI, Romania
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22
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Voets IK, Keizer AD, Leermakers FA, Debuigne A, Jérôme R, Detrembleur C, Cohen Stuart MA. Electrostatic hierarchical co-assembly in aqueous solutions of two oppositely charged double hydrophilic diblock copolymers. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Labuschagne PW, Germishuizen WA, C. Verryn SM, Moolman FS. Improved oxygen barrier performance of poly(vinyl alcohol) films through hydrogen bond complex with poly(methyl vinyl ether-co-maleic acid). Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.04.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Vasheghani FB, Rajabi FH, Ahmadi MH. Thermodynamic Study of Multi‐Component Polymer Complexes of Varying Composition in a Mixed Solvent. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320601044674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Vasheghani F. B, Rajabi F, Ahmadi M. Influence of solvent on thermodynamic parameters and stability of some multicomponent polymer complexes involving an acrylic polymer, poly (ethylene imine) and poly (vinyl pyrrolidone). Polym Bull (Berl) 2006. [DOI: 10.1007/s00289-006-0693-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Abstract
A composite hydrogel with interpenetrating network structure was prepared via in-situ synthesis of calcium phosphates during the physical-chemical crosslinking of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA). The hydrogel water content was tested. Fourier transform
infrared absorption spectrum (FT-IR), X-ray diffraction and scanning electron microscopy were employed to evaluate the characteristics of the composite hydrogel. The results showed that the composite hydrogel had high water content and that the inorganic phase was poorly crystalline
calcium phosphates. FT-IR confirmed that the interpenetrating network structure was formed between PVA and PAA. The chemical interactions between inorganic and organic phases were further investigated and discussed. The composite hydrogel with an interpenetrating network achieved using the present novel method could be a promising material for tissue engineering.
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27
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Dubolazov AV, Nurkeeva ZS, Mun GA, Khutoryanskiy VV. Design of Mucoadhesive Polymeric Films Based on Blends of Poly(acrylic acid) and (Hydroxypropyl)cellulose. Biomacromolecules 2006; 7:1637-43. [PMID: 16677049 DOI: 10.1021/bm060090l] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mixing of aqueous solutions of poly(acrylic acid) and (hydroxypropyl)cellulose results in formation of hydrogen-bonded interpolymer complexes, which precipitate and do not allow preparation of homogeneous polymeric films by casting. In the present work the effect of pH on the complexation between poly(acrylic acid) and (hydroxypropyl)cellulose in solutions and miscibility of these polymers in solid state has been studied. The pH-induced complexation-miscibility-immiscibility transitions in the polymer mixtures have been observed. The optimal conditions for preparation of homogeneous polymeric films based on blends of these polymers have been found, and the possibility of radiation cross-linking of these materials has been demonstrated. Although the gamma-radiation treatment of solid polymeric blends was found to be inefficient, successful cross-linking was achieved by addition of N,N'-methylenebis(acrylamide). The mucoadhesive potential of both soluble and cross-linked films toward porcine buccal mucosa is evaluated. Soluble films adhered to mucosal tissues undergo dissolution within 30-110 min depending on the polymer ratio in the blend. Cross-linked films are retained on the mucosal surface for 10-40 min and then detach.
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Affiliation(s)
- Artem V Dubolazov
- Department of Chemical Physics & Macromolecular Chemistry, Kazakh National University, Karasai Batyra 95, 050012 Almaty, Kazakhstan
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Hadj-Hamou AS, Djadoun S. Interpolymer-specific interactions and miscibility in poly(styrene-co-acrylic acid)/poly(styrene-co-N,N-dimethylacrylamide) blends. J Appl Polym Sci 2006. [DOI: 10.1002/app.25292] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lin WC, Yu DG, Yang MC. Blood compatibility of novel poly(γ-glutamic acid)/polyvinyl alcohol hydrogels. Colloids Surf B Biointerfaces 2006; 47:43-9. [PMID: 16386882 DOI: 10.1016/j.colsurfb.2005.11.013] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2005] [Revised: 11/03/2005] [Accepted: 11/17/2005] [Indexed: 11/30/2022]
Abstract
Sodium poly(gamma-glutamic acid) (PGA), a water-soluble and biodegradable polypeptide, was reacted with polyvinyl alcohol (PVA) to form hydrogel without any chemical treatment. The gelation occurred probably due to physical cross-linking of polymer chains by interpenetrating hydrogen bonding. From the results of thermal analysis, PGA/PVA exhibited better thermal stability than native PVA. Although the swelling ratio decreased with the increase of PGA content, however, the water resistance and retention were improved. The tensile strength of the PGA/PVA hydrogel membranes was about 15-30% lower than that of the native PVA, whereas the elongation was increased 2.0-2.6 times. The amount of protein adsorbed and platelets adhered on the PGA/PVA membranes were significantly curtailed with increasing PGA content, thereby showing improved blood compatibility. The as-fabricated hydrogels were proven to be non-cytotoxic evaluated in vitro by L-929 fibroblast incubation. Overall results demonstrate that the non-cytotoxic PGA/PVA hydrogels, due to better water resistance, mechanical properties and blood compatibility could be very promising candidates for blood-contacting medical devices.
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Affiliation(s)
- Wen-Ching Lin
- Department of Polymer Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
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Mangazbaeva RA, Mun GA, Nurkeeva ZS, Khutoryanskiy VV. Interpolymer complexes of hydroxypropylmethylcellulose with polycarboxylic acids in aqueous solutions. POLYM INT 2006. [DOI: 10.1002/pi.2012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Selectivity in interpolymer complex formation between phenolic copolymer, polyelectrolyte, non-ionic polymer and metal ions. Polym Bull (Berl) 2005. [DOI: 10.1007/s00289-005-0455-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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