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Veetil R, Soundiraraju B, Mathew D, Kalamblayil Sankaranarayanan SK. End-Terminated Poly(urethane-urea) Hybrid Approach toward Nanoporous/Microfilament Morphology. ACS OMEGA 2022; 7:6280-6291. [PMID: 35224390 PMCID: PMC8867484 DOI: 10.1021/acsomega.1c06888] [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: 12/06/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
In the present work, the effect of heteroatomic hydrogen bonding on the properties of -OH/-NH-terminated soft-segment-free polymers, viz, polyurethane (P-UT), polyurea (P-UR), and their hybrid (P-UT-UR), is explored. P-UT was synthesized from phloroglucinol and P-UR was synthesized from 1,3,5-triazine-2,4,6-triamine by employing hexamethylene diisocyanate as a counterpart. P-UT exhibited a spherulitic structure with varying sizes, whereas P-UR displayed a fibrillar structure characteristic as that of crystalline hard segments. The P-UT-UR hybrid exhibited a fine nanospherulitic structure with a high order of interconnectivity. Negative surface skewness values of -0.47 and -0.18 were measured (by AFM) for P-UT and P-UT-UR, respectively, which revealed that the surface is not smooth and is covered with features. Due to the increased H-bonding (-N-H···O-H) in P-UT-UR, its transparency decreased. A block copolymer hybrid of urethane-urea was synthesized, which preferred homoatomic H-bonding, whereas random urethane/urea bridges favored hetreoheteroatom H-bonding. A pentafluorophenyl end-functional hybrid (PFI-P-UT-UR) was synthesized, which displayed filaments of ∼2-3 μm length in contrast to the interconnected nanospherulitic structure observed for P-UT-UR. The self-aggregation and end folding led to the formation of a filament structure. By altering the chemical structure slightly, nano-ordered polyurethanes or their hybrids can be achieved.
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Affiliation(s)
- Rashmi
Edachery Veetil
- Polymers
and Special Chemicals Division, Vikram Sarabhai
Space Centre, Thiruvananthapuram 695022, India
| | - Bhuvaneswari Soundiraraju
- Analytical
and Spectroscopy Division, Vikram Sarabhai
Space Centre, Thiruvananthapuram 695022, India
| | - Dona Mathew
- Polymers
and Special Chemicals Division, Vikram Sarabhai
Space Centre, Thiruvananthapuram 695022, India
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Das S, Kalita H, Mohanty S, Nayak SK. Soybean Oil-Based Polyurethane-(Poly)acrylonitrile Interpenetrating Polymer Networks as Transparent Coating Materials. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21755] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Subhajit Das
- Laboratory for Advanced Research in Polymeric Materials (LARPM); Central Institute of Plastics Engineering and Technology (CIPET); B-25 CNI Complex Patia, Bhubaneswar Orissa India
| | - Hemjyoti Kalita
- Laboratory for Advanced Research in Polymeric Materials (LARPM); Central Institute of Plastics Engineering and Technology (CIPET); B-25 CNI Complex Patia, Bhubaneswar Orissa India
| | - Smita Mohanty
- Laboratory for Advanced Research in Polymeric Materials (LARPM); Central Institute of Plastics Engineering and Technology (CIPET); B-25 CNI Complex Patia, Bhubaneswar Orissa India
| | - Sanjay Kumar Nayak
- Laboratory for Advanced Research in Polymeric Materials (LARPM); Central Institute of Plastics Engineering and Technology (CIPET); B-25 CNI Complex Patia, Bhubaneswar Orissa India
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Acar H, Banerjee S, Shi H, Jamshidi R, Hashemi N, Cho MW, Montazami R. Transient Biocompatible Polymeric Platforms for Long-Term Controlled Release of Therapeutic Proteins and Vaccines. MATERIALS (BASEL, SWITZERLAND) 2016; 9:321. [PMID: 28546855 PMCID: PMC5441878 DOI: 10.3390/ma9050321] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/22/2016] [Indexed: 11/29/2022]
Abstract
Polymer-based interpenetrating networks (IPNs) with controllable and programmable degradation and release kinetics enable unique opportunities for physisorption and controlled release of therapeutic proteins or vaccines while their chemical and structural integrities are conserved. This paper presents materials, a simple preparation method, and release kinetics of a series of long-term programmable, biocompatible, and biodegradable polymer-based IPN controlled release platforms. Release kinetics of the gp41 protein was controlled over a 30-day period via tuning and altering the chemical structure of the IPN platforms. Post-release analysis confirmed structural conservation of the gp41 protein throughout the process. Cell viability assay confirmed biocompatibility and non-cytotoxicity of the IPNs.
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Affiliation(s)
- Handan Acar
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
| | - Saikat Banerjee
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (S.B.); (H.S.); (M.W.C.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Heliang Shi
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (S.B.); (H.S.); (M.W.C.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Reihaneh Jamshidi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Nastaran Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
- Ames Laboratory, Department of Energy, Ames, IA 50011, USA
| | - Michael W. Cho
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (S.B.); (H.S.); (M.W.C.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
- Ames Laboratory, Department of Energy, Ames, IA 50011, USA
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Boppana R, Kulkarni RV, Mohan GK, Mutalik S, Aminabhavi TM. In vitro and in vivo assessment of novel pH-sensitive interpenetrating polymer networks of a graft copolymer for gastro-protective delivery of ketoprofen. RSC Adv 2016. [DOI: 10.1039/c6ra04218j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel pH-sensitive IPN microbeads exhibited drug release in response to changing pH and reduced side effects of ketoprofenin vivo.
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Affiliation(s)
- Rashmi Boppana
- Department of Pharmaceutical Technology
- BLDEA's College of Pharmacy
- Vijayapur (Bijapur) 586 103
- India
| | - Raghavendra V. Kulkarni
- Department of Pharmaceutical Technology
- BLDEA's College of Pharmacy
- Vijayapur (Bijapur) 586 103
- India
| | - G. Krishna Mohan
- Centre for Pharmaceutical Sciences
- Jawaharlal Nehru Technological University
- Hyderabad 500 585
- India
| | - Srinivas Mutalik
- Department of Pharmaceutics
- Manipal College of Pharmaceutical Sciences
- Manipal University
- Manipal
- India
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Balanuca B, Lungu A, Conicov I, Stan R, Vasile E, Vuluga DM, Iovu H. Novel bio-based IPNs obtained by simultaneous thermal polymerization of flexible methacrylate network based on a vegetable oil and a rigid epoxy. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Brindusa Balanuca
- Advanced Polymer Materials Group, Department of Bioresources and Polymer Science; University Politehnica of Bucharest; Romania
- Department of Organic Chemistry; University Politehnica of Bucharest; Romania
| | - Adriana Lungu
- Advanced Polymer Materials Group, Department of Bioresources and Polymer Science; University Politehnica of Bucharest; Romania
| | - Iulia Conicov
- Advanced Polymer Materials Group, Department of Bioresources and Polymer Science; University Politehnica of Bucharest; Romania
| | - Raluca Stan
- Department of Organic Chemistry; University Politehnica of Bucharest; Romania
| | - Eugeniu Vasile
- Advanced Polymer Materials Group, Department of Bioresources and Polymer Science; University Politehnica of Bucharest; Romania
| | - Dumitru Mircea Vuluga
- “Costin D. Nenitzescu” Center for Organic Chemistry of the Romanian Academy; Bucharest Romania
| | - Horia Iovu
- Advanced Polymer Materials Group, Department of Bioresources and Polymer Science; University Politehnica of Bucharest; Romania
- Academy of Romanian Scientists
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Kulkarni RV, Baraskar VV, Alange VV, Naikawadi AA, Sa B. Controlled Release of an Antihypertensive Drug through Interpenetrating Polymer Network Hydrogel Tablets of Tamarind Seed Polysaccharide and Sodium Alginate. J MACROMOL SCI B 2013. [DOI: 10.1080/00222348.2013.789327] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Raghavendra V. Kulkarni
- a Department of Pharmaceutical Technology , Bijapur Liberal District Education Association's College of Pharmacy , Bijapur , Karnataka , India
| | - Vaibhav V. Baraskar
- a Department of Pharmaceutical Technology , Bijapur Liberal District Education Association's College of Pharmacy , Bijapur , Karnataka , India
| | - Vijaykumar V. Alange
- a Department of Pharmaceutical Technology , Bijapur Liberal District Education Association's College of Pharmacy , Bijapur , Karnataka , India
| | - Akram A. Naikawadi
- b Department of Pharmacology, Shri. B.M. Patil Medical College , Bijapur Liberal District Education University , Bijapur , Karnataka , India
| | - Biswanath Sa
- c Division of Pharmaceutics, Department of Pharmaceutical Technology , Jadavpur University , Kolkata , India
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Giri TK, Thakur D, Alexander A, Badwaik H, Tripathy M, Tripathi DK. Biodegradable IPN hydrogel beads of pectin and grafted alginate for controlled delivery of diclofenac sodium. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1179-1190. [PMID: 23423649 DOI: 10.1007/s10856-013-4884-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 02/04/2013] [Indexed: 06/01/2023]
Abstract
A novel diclofenac sodium (DS) loaded interpenetrating polymer network (IPN) beads of pectin and hydrolyzed polyacrylamide-graft-sodium alginate (PAAm-g-SA) was developed through ionotropic gelation and covalent cross-linking. The graft copolymer was synthesized by free radical polymerization under the nitrogen atmosphere followed by alkaline hydrolysis. The grafting, alkaline hydrolysis, and characterization of beads were confirmed by Fourier transforms infrared spectroscopy. The crystalline structure of drug after encapsulation into IPN beads were evaluated by differential scanning colorimetry and X-ray diffraction analyses. DS encapsulation was up to 96.45 %. The effect of hydrolyzed graft copolymer/pectin ratios and glutaraldehyde concentration on drug release in acidic and phosphate buffer solutions were investigated. The release of drug was significantly increased with increase of pH. The release of drug depends on the extent of cross-linking. The results indicated that IPN beads of hydrolyzed PAAm-g-SA and pectin could be used for sustained release of DS.
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Affiliation(s)
- Tapan Kumar Giri
- Rungta College of Pharmaceutical Sciences and Research, Kohka Road, Kurud, Bhilai 491024, India.
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Kulkarni RV, Mutalik S, Mangond BS, Nayak UY. Novel interpenetrated polymer network microbeads of natural polysaccharides for modified release of water soluble drug: in-vitro and in-vivo evaluation. ACTA ACUST UNITED AC 2011; 64:530-40. [PMID: 22420659 DOI: 10.1111/j.2042-7158.2011.01433.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The objective of this work was to prepare novel interpenetrating polymer network (IPN) microbeads of tamarind seed polysaccharide and sodium alginate for controlled release of the water soluble drug, diltiazem hydrochloride. METHODS The diltiazem-Indion 254(®) (a cation exchange resin) complex was prepared and the resulting complex was entrapped within IPN microbeads prepared by ionotropic gelation and covalent crosslinking. Microbeads were characterized by scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) analyses, and evaluated for swelling, in-vitro release and preclinical pharmacokinetics. KEY FINDINGS The unformulated drug showed complete dissolution within 60min, while drug release from diltiazem-ion-exchange resin complex was extended for 2.5h but IPN microbeads extended the release for longer period. The ionically crosslinked microbeads released the drug for 6h, while dual crosslinked microbeads extended the release for 9h. The microbeads containing a higher amount of glutaraldehyde released the drug very slowly. The results of in-vivo pharmacokinetics of pure drug and drug-loaded IPN microbeads showed that the microbeads demonstrated prolonged release supporting the findings of in-vitro studies. CONCLUSIONS Prepared IPN microbeads showed prolonged in-vitro and in-vivo release for diltiazem, indicating that this IPN would be a versatile delivery system for water soluble drugs.
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Affiliation(s)
- Raghavendra V Kulkarni
- Department of Pharmaceutics, BLDEA's College of Pharmacy, BLDE University Campus, Bijapur, India.
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Kulkarni RV, Boppana R, Krishna Mohan G, Mutalik S, Kalyane NV. pH-responsive interpenetrating network hydrogel beads of poly(acrylamide)-g-carrageenan and sodium alginate for intestinal targeted drug delivery: synthesis, in vitro and in vivo evaluation. J Colloid Interface Sci 2011; 367:509-17. [PMID: 22047923 DOI: 10.1016/j.jcis.2011.10.025] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 10/07/2011] [Accepted: 10/08/2011] [Indexed: 10/16/2022]
Abstract
In the present work, we synthesized pH-responsive interpenetrating network (IPN) hydrogel beads of polyacrylamide grafted κ-carrageenan (PAAm-g-CG) and sodium alginate (SA) for targeting ketoprofen to the intestine. The PAAm-g-CG was synthesized by free radical polymerization followed by alkaline hydrolysis under nitrogen gas. The PAAm-g-CG was characterized by elemental analysis, FTIR spectroscopy and thermogravimetric analysis (TGA). The drug-loaded IPN hydrogel beads were prepared by simple ionotropic gelation/covalent crosslinking method. The amorphous nature of drug in the beads was confirmed by differential scanning calorimetry and X-ray diffraction studies. The spherical shape of the beads was confirmed by scanning electron microscopic analysis. The beads exhibited ample pH-responsive behavior in the pulsatile swelling study. The ketoprofen release was significantly increased when pH of the medium was changed from acidic to alkaline. The beads showed maximum of 10% drug release in acidic medium of pH 1.2, and about 90% drug release was recorded in alkaline medium of pH 7.4. Stomach histopathology of albino rats indicated that the prepared beads were able to retard the drug release in stomach leading to the reduced ulceration, hemorrhage and erosion of gastric mucosa.
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Affiliation(s)
- Raghavendra V Kulkarni
- Department of Pharmaceutics, BLDEA's College of Pharmacy, BLDE University Campus, Bijapur 586 103, Karnataka, India.
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Ray R, Maity S, Mandal S, Chatterjee TK, Sa B. Studies on the release of ibuprofen from Al3+ ion cross-linked homopolymeric and interpenetrating network hydrogel beads of carboxymethyl xanthan and sodium alginate. ADVANCES IN POLYMER TECHNOLOGY 2011. [DOI: 10.1002/adv.20199] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Interpenetrating network hydrogel membranes of sodium alginate and poly(vinyl alcohol) for controlled release of prazosin hydrochloride through skin. Int J Biol Macromol 2010; 47:520-7. [DOI: 10.1016/j.ijbiomac.2010.07.009] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 07/21/2010] [Accepted: 07/26/2010] [Indexed: 11/22/2022]
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Mandal S, Basu SK, Sa B. Ca2+ ion cross-linked interpenetrating network matrix tablets of polyacrylamide-grafted-sodium alginate and sodium alginate for sustained release of diltiazem hydrochloride. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.06.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Boppana R, Kulkarni RV, Mutalik SS, Setty CM, Sa B. Interpenetrating network hydrogel beads of carboxymethylcellulose and egg albumin for controlled release of lipid lowering drug. J Microencapsul 2010; 27:337-44. [DOI: 10.3109/02652040903191842] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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14
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Yue Y, Wang P, Chen Q, Guang Liu X. Preparation and characterization of nanostructured and high transparent hydrogel films with pH sensitivity and application. J Appl Polym Sci 2009. [DOI: 10.1002/app.29773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Yue Y, Sheng X, Wang P. Fabrication and characterization of microstructured and pH sensitive interpenetrating networks hydrogel films and application in drug delivery field. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2008.10.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kulkarni RV, Sa B. Evaluation of pH-Sensitivity and Drug Release Characteristics of (Polyacrylamide-Grafted-Xanthan)–Carboxymethyl Cellulose-Based pH-Sensitive Interpenetrating Network Hydrogel Beads. Drug Dev Ind Pharm 2008; 34:1406-14. [DOI: 10.1080/03639040802130079] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Peng HT, Martineau L, Shek PN. Hydrogel-elastomer composite biomaterials: 3. Effects of gelatin molecular weight and type on the preparation and physical properties of interpenetrating polymer networks. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:997-1007. [PMID: 17665128 DOI: 10.1007/s10856-007-0167-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Accepted: 02/08/2007] [Indexed: 05/16/2023]
Abstract
To optimize the preparation of a gelatin-HydroThane Interpenetrating Polymer Network (IPN) and obtain optimum physical properties for its use as a wound dressing, we studied IPN films prepared with two types of gelatin having different molecular weights. The effects of the gelatin molecular weight and type on the IPN film's structure, morphology, swelling and mechanical properties were determined. While FTIR did not reveal any noticeable differences between the IPNs prepared using different gelatin, light microscopy showed a lesser phase separation of the film prepared with a high-molecular-weight type A gelatin. Furthermore, these films displayed slightly less swelling, higher strength and lower strain, compared to the IPNs prepared with either low-molecular-weight type A or type B gelatin. The IPN prepared with type B gelatin showed higher swelling in serum-containing medium than those prepared with type A gelatin, because of its ionic charges under the condition. Increases in viscosity were observed with increasing molecular weight, type A being more viscous than type B gelatin despite having a lower bloom number. The viscosity of the high-molecular-weight gelatin was in the same magnitude as that of HydroThane, which might lead to less phase separation. A better understanding of the effects of alterations in the gelatin molecular weight and type on the formation and properties of the gelatin-HydroThane IPN should facilitate the development of promising composite biomaterials for wound dressing applications.
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Affiliation(s)
- Henry T Peng
- Defence Research and Development Canada-Toronto, 1133 Sheppard Avenue West, P.O. Box 2000, Toronto, ON, Canada M3M 3B9.
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Hsieh KH, Liao KH, Lai EHH, Lee BS, Lee CY, Lin CP. A Novel Polyurethane-based Root Canal–obturation Material and Urethane Acrylate–based Root Canal Sealer—Part I: Synthesis and Evaluation of Mechanical and Thermal Properties. J Endod 2008; 34:303-5. [DOI: 10.1016/j.joen.2007.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2007] [Revised: 12/12/2007] [Accepted: 12/19/2007] [Indexed: 10/22/2022]
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Lin CY, Liao KH, Su CF, Kuo CH, Hsieh KH. Smart temperature-controlled water vapor permeable polyurethane film. J Memb Sci 2007. [DOI: 10.1016/j.memsci.2007.04.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peng HT, Mok M, Martineau L, Shek PN. Hydrogel-elastomer composite biomaterials: 2. Effects of aging methacrylated gelatin solutions on the preparation and physical properties of interpenetrating polymer networks. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 18:1025-35. [PMID: 17243004 DOI: 10.1007/s10856-006-0072-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2005] [Accepted: 01/04/2006] [Indexed: 05/13/2023]
Abstract
This study was conducted to understand the effects of aging methacrylated gelatin solutions on the properties of gelatin-HydroThane Interpenetrating Polymer Network (IPN) films. The latter were prepared from methacrylated gelatin solutions that were either freshly made or stored at different concentrations and temperatures for various periods. The morphology, swelling stability and mechanical properties of the IPNs were then accordingly characterized. The IPNs prepared with aged solutions showed a reduced phase separation; changed from a network-like structure to a continuous phase structure; and demonstrated higher swelling stabilities and higher elasticity under optimal aging conditions, compared to the IPN prepared with a fresh methacrylated gelatin solution. An increase in viscosity and a change in phase transition of aged methacrylated gelatin solutions were also observed, presumably due to the physical structuring of methacrylated gelatin chains (e.g., by the formation of a helix structure), thus altering the resulting IPN characteristics. A better understanding of the effects of aging methacrylated gelatin solution on the formation and properties of gelatin-HydroThane IPNs should enable us to further develop our composite biomaterials for different dressing applications.
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Affiliation(s)
- Henry T Peng
- Defence Research and Development Canada - Toronto, 1133 Sheppard Avenue West, P. O. Box 2000, Toronto, ON, Canada M3M 3B9.
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Effects of polydimethylsiloxane concentration on properties of polyurethane/polydimethylsiloxane hybrid dispersions. J Appl Polym Sci 2006. [DOI: 10.1002/app.24666] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Jones DS, McLaughlin DWJ, McCoy CP, Gorman SP. Physicochemical characterisation and biological evaluation of hydrogel-poly(epsilon-caprolactone) interpenetrating polymer networks as novel urinary biomaterials. Biomaterials 2005; 26:1761-70. [PMID: 15576150 DOI: 10.1016/j.biomaterials.2004.06.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2003] [Accepted: 06/01/2004] [Indexed: 11/23/2022]
Abstract
Hydrogels are frequently employed as medical device biomaterials due to their advantageous biological properties, e.g. resistance to infection and encrustation, biocompatibility; however, their poor mechanical properties generally limit the scope of application to coatings of medical devices. To address this limitation, this study described the formulation of sequential interpenetrating polymer networks (IPN) of poly(-caprolactone) (PCL) and poly(hydroxyethylmethacrylate) (p(HEMA)). IPN containing 20% w/w PCL, p(HEMA), both in the presence or absence of ethyleneglycol dimethacrylate (EGDMA 1% w/w), were prepared by free radical polymerisation. Following preparation the degradation and the mechanical and surface properties of the biomaterials and, in addition, the resistances to microbial adherence and encrustation in vitro were examined. In comparison to p(HEMA) the various IPN exhibited substantially greater tensile properties (ultimate tensile strength, % elongation, Young's modulus) that were accredited to the discrete distribution of PCL within the hydrogel network. The IPN exhibited two glass transition temperatures that were statistically similar to those of the individual components, thereby providing evidence of the immiscible nature of the two polymers. The IPN possessed higher receding contact angles and lower equilibrium water contents in comparison to p(HEMA), whereas the limited degradation of the IPN at both pH 7 and 9 was deemed suitable for clinical usage for periods of at least 4 weeks. The resistances of the various IPN to bacterial adherence and urinary encrustation were examined using in vitro models. Importantly the resistance of the IPN to encrustation was, in general, similar to that of p(HEMA) but greater than that of PCL whereas, the resistance of the IPN to bacterial adherence was frequently greater than that of p(HEMA) and PCL. Therefore, this study has shown that the mechanical properties of p(HEMA) may be substantially increased by the formation of IPN with PCL whilst maintaining other appropriate physicochemical properties and resistances to urinary encrustation and bacterial adherence. It is suggested that these IPN may be suitable for device fabrication thereby expanding the manufacturing application of hydrogels without compromising their potential clinical efficacy.
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Affiliation(s)
- David S Jones
- Medical Devices Unit, School of Pharmacy, The Queen's University of Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK.
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Zeng M, Zhang L, Kennedy JF. Intermolecular interaction and properties of cross-linked materials from poly(ester-urethane) and nitrochitosan. Carbohydr Polym 2005. [DOI: 10.1016/j.carbpol.2005.02.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim SJ, Lee KJ, Kim IY, An KH, Kim SI. Preparation and characteristics of poly(propylene glycol) and poly(acrylic acid) interpenetrating polymer network hydrogels. J Appl Polym Sci 2003. [DOI: 10.1002/app.12842] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kim SJ, Lee KJ, Kim SI, Lee KB, Park YD. Sorption characterization of poly(vinyl alcohol)/chitosan interpenetrating polymer network hydrogels. J Appl Polym Sci 2003. [DOI: 10.1002/app.12540] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Liu H, Zhang L. Structure and properties of semiinterpenetrating polymer networks based on polyurethane and nitrochitosan. J Appl Polym Sci 2001. [DOI: 10.1002/app.2167] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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