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Malashin IP, Tynchenko VS, Nelyub VA, Borodulin AS, Gantimurov AP. Estimation and Prediction of the Polymers' Physical Characteristics Using the Machine Learning Models. Polymers (Basel) 2023; 16:115. [PMID: 38201778 PMCID: PMC10780762 DOI: 10.3390/polym16010115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/23/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
This article investigates the utility of machine learning (ML) methods for predicting and analyzing the diverse physical characteristics of polymers. Leveraging a rich dataset of polymers' characteristics, the study encompasses an extensive range of polymer properties, spanning compressive and tensile strength to thermal and electrical behaviors. Using various regression methods like Ensemble, Tree-based, Regularization, and Distance-based, the research undergoes thorough evaluation using the most common quality metrics. As a result of a series of experimental studies on the selection of effective model parameters, those that provide a high-quality solution to the stated problem were found. The best results were achieved by Random Forest with the highest R2 scores of 0.71, 0.73, and 0.88 for glass transition, thermal decomposition, and melting temperatures, respectively. The outcomes are intricately compared, providing valuable insights into the efficiency of distinct ML approaches in predicting polymer properties. Unknown values for each characteristic were predicted, and a method validation was performed by training on the predicted values, comparing the results with the specified variance values of each characteristic. The research not only advances our comprehension of polymer physics but also contributes to informed model selection and optimization for materials science applications.
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Affiliation(s)
- Ivan Pavlovich Malashin
- Artificial Intelligence Technology Scientific and Education Center, Bauman Moscow State Technical University, 105005 Moscow, Russia; (V.A.N.); (A.S.B.); (A.P.G.)
| | - Vadim Sergeevich Tynchenko
- Artificial Intelligence Technology Scientific and Education Center, Bauman Moscow State Technical University, 105005 Moscow, Russia; (V.A.N.); (A.S.B.); (A.P.G.)
- Information-Control Systems Department, Institute of Computer Science and Telecommunications, Reshetnev Siberian State University of Science and Technology, 660037 Krasnoyarsk, Russia
- Department of Technological Machines and Equipment of Oil and Gas Complex, School of Petroleum and Natural Gas Engineering, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - Vladimir Aleksandrovich Nelyub
- Artificial Intelligence Technology Scientific and Education Center, Bauman Moscow State Technical University, 105005 Moscow, Russia; (V.A.N.); (A.S.B.); (A.P.G.)
| | - Aleksei Sergeevich Borodulin
- Artificial Intelligence Technology Scientific and Education Center, Bauman Moscow State Technical University, 105005 Moscow, Russia; (V.A.N.); (A.S.B.); (A.P.G.)
| | - Andrei Pavlovich Gantimurov
- Artificial Intelligence Technology Scientific and Education Center, Bauman Moscow State Technical University, 105005 Moscow, Russia; (V.A.N.); (A.S.B.); (A.P.G.)
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Caputo M, Shi C, Tang X, Sardon H, Chen EYX, Müller AJ. Tailoring the Nucleation and Crystallization Rate of Polyhydroxybutyrate by Copolymerization. Biomacromolecules 2023; 24:5328-5341. [PMID: 37782027 PMCID: PMC10646943 DOI: 10.1021/acs.biomac.3c00808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/20/2023] [Indexed: 10/03/2023]
Abstract
In the polyester family, the biopolymer with the greatest industrial potential could be poly(3-hydroxybutyrate) (PHB), which can be produced nowadays biologically or chemically. The scarce commercial use of PHB derives from its poor mechanical properties, which can be improved by incorporating a flexible aliphatic polyester with good mechanical performance, such as poly(ε-caprolactone) (PCL), while retaining its biodegradability. This work studies the structural, thermal, and morphological properties of block and random copolymers of PHB and PCL. The presence of a comonomer influences the thermal parameters following nonisothermal crystallization and the kinetics of isothermal crystallization. Specifically, the copolymers exhibit lower melting and crystallization temperatures and present lower overall crystallization kinetics than neat homopolymers. The nucleation rates of the PHB components are greatly enhanced in the copolymers, reducing spherulitic sizes and promoting transparency with respect to neat PHB. However, their spherulitic growth rates are depressed so much that superstructural growth becomes the dominating factor that reduces the overall crystallization kinetics of the PHB component in the copolymers. The block and random copolymers analyzed here also display important differences in the structure, morphology, and crystallization that were examined in detail. Our results show that copolymerization can tailor the thermal properties, morphology (spherulitic size), and crystallization kinetics of PHB, potentially improving the processing, optical, and mechanical properties of PHB.
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Affiliation(s)
- Maria
Rosaria Caputo
- POLYMAT
and Department of Polymers and Advanced Materials: Physics, Chemistry
and Technology, Faculty of Chemistry, University
of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Changxia Shi
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United
States
| | - Xiaoyan Tang
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United
States
| | - Haritz Sardon
- POLYMAT
and Department of Polymers and Advanced Materials: Physics, Chemistry
and Technology, Faculty of Chemistry, University
of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Eugene Y.-X. Chen
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United
States
| | - Alejandro J. Müller
- POLYMAT
and Department of Polymers and Advanced Materials: Physics, Chemistry
and Technology, Faculty of Chemistry, University
of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
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3
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Elgoyhen J, Pirela V, Müller AJ, Tomovska R. Synthesis and Crystallization of Waterborne Thiol-ene Polymers: Toward Innovative Oxygen Barrier Coatings. ACS APPLIED POLYMER MATERIALS 2023; 5:8845-8858. [PMID: 37970532 PMCID: PMC10644330 DOI: 10.1021/acsapm.3c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 11/17/2023]
Abstract
The synthesis of waterborne thiol-ene polymer dispersions is challenging due to the high reactivity of thiol monomers and the premature thiol-ene polymerization that leads to high irreproducibility. By turning this challenge into an advantage, a synthesis approach of high solid content film-forming waterborne poly(thioether) prepolymers is reported based on initiator-free step growth sonopolymerization. Copolymerization of bifunctional thiol and ene monomers diallyl terephthalate, glycol dimercaptoacetate, glycol dimercaptopropionate, and 2,2-(ethylenedioxy)diethanethiol gave rise to linear poly(thioether) functional chains with molar mass ranging between 7 and 23 kDa when synthesized at 30% solid content and between 1 and 9 kDa at increased solid content of 50%. To further increase the polymers' molar mass, an additional photopolymerization step was performed in the presence of a water-soluble photoinitiator, i.e., lithium phenyl-2,4,6-trimethylbenzoylphosphinate, leading to high molar mass chains of up to 200 kDa, the highest reported so far for step grown poly(thioethers). The polymer dispersions presented good film-forming ability at room temperature, yielding semicrystalline films with a high potential for barrier coating applications. Nevertheless, affected by the polymer chemical repeating structure, which includes an aromatic ring, these thiol-ene chains can only crystallize very slowly from the molten state. Herein, for the first time, we present the successful implementation of a self-nucleation (SN) procedure for these types of poly(thioethers), which effectively accelerates their crystallization kinetics.
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Affiliation(s)
- Justine Elgoyhen
- POLYMAT
and Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country UPV/EHU, Avda Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Valentina Pirela
- POLYMAT
and Department of Polymers and Advanced Materials: Physics Chemistry
and Technology, Faculty of Chemistry, University
of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal 3, 20018 Donostia-San Sebastián, Spain
| | - Alejandro J. Müller
- POLYMAT
and Department of Polymers and Advanced Materials: Physics Chemistry
and Technology, Faculty of Chemistry, University
of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Radmila Tomovska
- POLYMAT
and Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country UPV/EHU, Avda Tolosa 72, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
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4
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Gjerde N, Del Giudice A, Zhu K, Knudsen KD, Galantini L, Schillén K, Nyström B. Synthesis and Characterization of a Thermoresponsive Copolymer with an LCST-UCST-like Behavior and Exhibiting Crystallization. ACS OMEGA 2023; 8:31145-31154. [PMID: 37663484 PMCID: PMC10468772 DOI: 10.1021/acsomega.3c03162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/03/2023] [Indexed: 09/05/2023]
Abstract
In this work, the diblock copolymer methoxy-poly(ethylene glycol)-block-poly(ε-caprolactone) (MPEG-b-PCL) was synthesized with a block composition that allows this polymer in aqueous media to possess both an upper critical solution temperature (UCST) and a lower critical solution temperature (LCST) over a limited temperature interval. The value of the UCST, associated with crystallization of the PCL-block, depended on heating (H) or cooling (C) of the sample and was found to be CPUCSTH = 32 °C and CPUCSTC = 23 °C, respectively. The LCST was not affected by the heating or cooling scans; assumed a value of 52 °C (CPLCSTH = CPLCSTC). At intermediate temperatures (e.g., 45 °C), dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryo-TEM) showed that the solution consisted of a large population of spherical core-shell particles and some self-assembled rodlike objects. At low temperatures (below 32 °C), differential scanning calorimetry (DSC) and wide-angle X-ray scattering (WAXS) in combination with SAXS disclosed the formation of crystals with a cylindrical core-shell structure. Cryo-TEM supported a thread-like appearance of the self-assembled polymer chains. At temperatures above 52 °C, incipient phase separation took place and large aggregation complexes of amorphous morphology were formed. This work provides insight into the intricate interplay between UCST and LCST and the type of structures formed at these conditions in aqueous solutions of MPEG-b-PCL diblock copolymers.
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Affiliation(s)
- Natalie
Solfrid Gjerde
- Department
of Chemistry, “Sapienza” University
of Rome, P.O. Box 34-Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Alessandra Del Giudice
- Department
of Chemistry, “Sapienza” University
of Rome, P.O. Box 34-Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Kaizheng Zhu
- Faculty
of Engineering, Østfold University
College, P.O. Box 700, 1757 Halden, Norway
| | | | - Luciano Galantini
- Department
of Chemistry, “Sapienza” University
of Rome, P.O. Box 34-Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Karin Schillén
- Division
of Physical Chemistry, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Bo Nyström
- Department
of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
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5
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Radisavljevic A, Stojanovic DB, Petrovic M, Radojevic V, Uskokovic P, Rajilic-Stojanovic M. Electrospun polycaprolactone nanofibers functionalized with Achillea millefolium extract yield biomaterial with antibacterial, antioxidant and improved mechanical properties. J Biomed Mater Res A 2022; 111:962-974. [PMID: 36571468 DOI: 10.1002/jbm.a.37481] [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: 01/15/2022] [Revised: 09/21/2022] [Accepted: 12/06/2022] [Indexed: 12/27/2022]
Abstract
In this study, polycaprolactone (PCL), as a biocompatible polymer was functionalized by addition of medicinal plant extract- Achillea millefolium L. (yarrow). Nanofiber mats were fabricated from PCL solutions containing dry yarrow extract in four concentrations (5%, 10%, 15%, and 20% relative to the weight of the polymer) by using blend electrospinning method. The nanofibers were characterized for their biological, mechanical and drug release behavior. In vitro release of yarrow polyphenols from the electrospun PCL nanofibers over a period of 5 days showed the release of up to 98% of the total loaded polyphenols. The released polyphenols retained its antioxidant activity, which was determined by DPPH assay. Electrospun PCL/yarrow nanofiber mats exhibited the antibacterial effect against Staphylococcus aureus, but had no effect on the growth of Pseudomonas aeruginosa. All PCL/yarrow nanofiber mats had improved mechanical properties compared to the neat PCL nanofibers, as evident by an increase in Young's modulus of elasticity (up to 5.7 times), the tensile strength (up to 5.5 times), and the strain at break (up to 1.45 times). Based on our results, yarrow-loaded PCL nanofiber mats appeared to be multi-functional biomaterials suitable for the production of catheter-coating materials, patches, or gauzes with antibacterial and antioxidant properties.
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Affiliation(s)
- Andjela Radisavljevic
- Faculty of Technology and Metallurgy, University of Belgrade, Innovation Centre, Belgrade, Serbia
| | - Dusica B Stojanovic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Milos Petrovic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Vesna Radojevic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Petar Uskokovic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
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6
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Chaber P, Tylko G, Włodarczyk J, Nitschke P, Hercog A, Jurczyk S, Rech J, Kubacki J, Adamus G. Surface Modification of PHBV Fibrous Scaffold via Lithium Borohydride Reduction. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7494. [PMID: 36363086 PMCID: PMC9653721 DOI: 10.3390/ma15217494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/17/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
In this study, lithium borohydride (LiBH4) reduction was used to modify the surface chemistry of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) fibers. Although the most common reaction employed in the surface treatment of polyester materials is hydrolysis, it is not suitable for fiber modification of bacterial polyesters, which are highly resistant to this type of reaction. The use of LiBH4 allowed the formation of surface hydroxyl groups under very mild conditions, which was crucial for maintaining the fibers' integrity. The presence of these groups resulted in a noticeable improvement in the surface hydrophilicity of PHBV, as revealed by contact angle measurements. After the treatment with a LiBH4 solution, the electrospun PHBV fibrous mat had a significantly greater number of viable osteoblast-like cells (SaOS-2 cell line) than the untreated mat. Moreover, the results of the cell proliferation measurements correlated well with the observed cell morphology. The most flattened SaOS-2 cells were found on the surface that supported the best cell attachment. Most importantly, the results of our study indicated that the degree of surface modification could be controlled by changing the degradation time and concentration of the borohydride solution. This was of great importance since it allowed optimization of the surface properties to achieve the highest cell-proliferation capacity.
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Affiliation(s)
- Paweł Chaber
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland
| | - Grzegorz Tylko
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland
| | - Jakub Włodarczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland
| | - Paweł Nitschke
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland
| | - Anna Hercog
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland
| | - Sebastian Jurczyk
- Institute for Engineering of Polymer Materials and Dyes, Łukasiewicz Research Network, Marii Skłodowskiej-Curie 55, 87-100 Toruń, Poland
| | - Jakub Rech
- Department of Biotechnology and Genetic Engineering, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Poniatowskiego 15, 40-055 Katowice, Poland
| | - Jerzy Kubacki
- Faculty of Science and Technology, Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
| | - Grażyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland
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7
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Nanostructured Electrospun Polycaprolactone-Propolis Mats Composed of Different Morphologies for Potential Use in Wound Healing. Molecules 2022; 27:molecules27165351. [PMID: 36014590 PMCID: PMC9413572 DOI: 10.3390/molecules27165351] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
This study aimed to investigate different types of morphologies obtained using the electrospinning process to produce a material that enables wound healing while performing a controlled release. Using benign solvents, the authors prepared and characterised electrospun polycaprolactone mats loaded with propolis, a popular extract in traditional medicine with potential for skin repair. Different morphologies were obtained from distinct storage periods of the solution before electrospinning to investigate the effect of PCL hydrolysis (average diameters of fibres and beads: 159.2-280.5 nm and 1.9-5.6 μm, respectively). Phytochemical and FTIR analyses of the extract confirmed propolis composition. GPC and viscosity analyses showed a decrease in polymer molecular weight over the storage period (about a 70% reduction over 14 days) and confirmed that it was responsible for the nanostructure diversity. Moreover, propolis acted as a lubricant agent, affecting the spun solutions' viscosity and the thermal properties and hydrophilicity of the mats. All samples were within the value range of the water vapour transpiration rate of the commercial products (1263.08 to 2179.84 g/m2·day). Even though the presence of beads did not affect the propolis release pattern, an in vitro wound-healing assay showed that propolis-loaded mats composed of beaded fibres increased the cell migration process. Thus, these films could present the potential for use in wound dressing applications.
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8
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Electro-conductive 3D printed polycaprolactone/gold nanoparticles nanocomposite scaffolds for myocardial tissue engineering. J Mech Behav Biomed Mater 2022; 132:105271. [DOI: 10.1016/j.jmbbm.2022.105271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/07/2022] [Accepted: 05/11/2022] [Indexed: 12/13/2022]
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9
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Crystallization behavior and structure of metallocene polyethylene with long-chain branch. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-021-04925-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Chain scission by ultrasonication of polycaprolactone with different initial molecular weight and concentration. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02982-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Leite MJ, Agner T, Machado F, Neto BAD, Araujo PHH, Sayer C. ε-caprolactone ring-opening polymerization catalyzed by imidazolium-based ionic liquid under mild reaction conditions. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02891-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Morinval A, Averous L. Systems Based on Biobased Thermoplastics: From Bioresources to Biodegradable Packaging Applications. POLYM REV 2021. [DOI: 10.1080/15583724.2021.2012802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Alexis Morinval
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, Strasbourg, Cedex 2, France
| | - Luc Averous
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, Strasbourg, Cedex 2, France
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14
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Leone ER, Ferraraccio LS, Damonte G, Lova P, Bertoncello P, Monticelli O. On the development of electrochemical sensors coated with polycaprolactone. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.107089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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15
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Optimization of Layered Dissolving Microneedle for Sustained Drug Delivery Using Heat-Melted Poly(Lactic-Co-glycolic Acid). Pharmaceutics 2021; 13:pharmaceutics13071058. [PMID: 34371749 PMCID: PMC8309023 DOI: 10.3390/pharmaceutics13071058] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 11/17/2022] Open
Abstract
Dissolving microneedles (DMNs) have been used as an alternative drug delivery system to deliver therapeutics across the skin barrier in a painless manner. In this study, we propose a novel heat-melting method for the fabrication of hydrophobic poly(lactic-co-glycolic acid) (PLGA) DMNs, without the use of potentially harmful organic solvents. The drug-loaded PLGA mixture, which consisted of a middle layer of the DMN, was optimized and successfully implanted into ex vivo porcine skin. Implanted HMP-DMNs separated from the patch within 10 min, enhancing user compliance, and the encapsulated molecules were released for nearly 4 weeks thereafter. In conclusion, the geometry of HMP-DMNs was successfully optimized for safe and effective transdermal sustained drug delivery without the use of organic solvents. This study provides a strategy for the innovative utilization of PLGA as a material for transdermal drug delivery systems.
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16
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Fuoco T. Degradation in Order: Simple and Versatile One‐Pot Combination of Two Macromolecular Concepts to Encode Diverse and Spatially Regulated Degradability Functions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tiziana Fuoco
- Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry, Biotechnology and Health KTH Royal Institute of Technology Teknikringen, 56–58 100-44 Stockholm Sweden
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17
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Fuoco T. Degradation in Order: Simple and Versatile One-Pot Combination of Two Macromolecular Concepts to Encode Diverse and Spatially Regulated Degradability Functions. Angew Chem Int Ed Engl 2021; 60:15482-15489. [PMID: 33951273 PMCID: PMC8361945 DOI: 10.1002/anie.202103143] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 01/20/2023]
Abstract
The clever one-pot combination of two macromolecular concepts, ring-opening polymerization (ROP) and step-growth polymerization (SGP), is demonstrated to be a simple, yet powerful tool to design a library of sequence-controlled polymers with diverse and spatially regulated degradability functions. ROP and SGP occur sequentially at room temperature when the organocatalytic conditions are switched from basic to acidic, and each allows the encoding of specific degradable bonds. ROP controls the sequence length and position of the degradability functions, while SGP between the complementary vinyl ether and hydroxyl chain-ends enables the formation of acetal bonds and high-molar-mass copolymers. The result is the rational combination of cleavable bonds prone to either bulk or surface erosion within the same macromolecule. The strategy is versatile and offers higher chemical diversity and level of control over the primary structure than current aliphatic polyesters or polycarbonates, while being simple, effective, and atom-economical and having potential for scalability.
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Affiliation(s)
- Tiziana Fuoco
- Department of Fibre and Polymer TechnologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of TechnologyTeknikringen, 56–58100-44StockholmSweden
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18
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López de Dicastillo C, Garrido L, Velásquez E, Rojas A, Gavara R. Designing Biodegradable and Active Multilayer System by Assembling an Electrospun Polycaprolactone Mat Containing Quercetin and Nanocellulose between Polylactic Acid Films. Polymers (Basel) 2021; 13:polym13081288. [PMID: 33920864 PMCID: PMC8071261 DOI: 10.3390/polym13081288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/04/2021] [Accepted: 04/13/2021] [Indexed: 01/23/2023] Open
Abstract
The design of multilayer systems is an innovative strategy to improve physical properties of biodegradable polymers and introduce functionality to the materials through the incorporation of an active compound into some of these layers. In this work, a trilayer film based on a sandwich of electrospun polycaprolactone (PCL) fibers (PCLé) containing quercetin (Q) and cellulose nanocrystals (CNC) between extruded polylactic acid (PLA) films was designed with the purpose of improving thermal and barrier properties and affording antioxidant activity to packaged foods. PCLé was successfully electrospun onto 70 µm-thick extruded PLA film followed by the assembling of a third 25 µm-thick commercial PLA film through hot pressing. Optical, morphological, thermal, and barrier properties were evaluated in order to study the effect of PCL layer and the addition of Q and CNC. Bilayer systems obtained after the electrospinning process of PCL onto PLA film were also evaluated. The release of quercetin from bi- and trilayer films to food simulants was also analyzed. Results evidenced that thermal treatment during thermo-compression melted PCL polymer and resulted in trilayer systems with barrier properties similar to single PLA film. Quercetin release from bi- and trilayer films followed a similar profile, but achieved highest value through the addition of CNC.
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Affiliation(s)
- Carol López de Dicastillo
- Packaging Innovation Center (LABEN-Chile), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile; (L.G.); (E.V.); (A.R.)
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile
- Correspondence: ; Tel.: +56-951377492
| | - Luan Garrido
- Packaging Innovation Center (LABEN-Chile), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile; (L.G.); (E.V.); (A.R.)
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile
| | - Eliezer Velásquez
- Packaging Innovation Center (LABEN-Chile), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile; (L.G.); (E.V.); (A.R.)
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile
| | - Adrián Rojas
- Packaging Innovation Center (LABEN-Chile), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile; (L.G.); (E.V.); (A.R.)
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago of Chile (USACH), Obispo Umaña 050, Santiago 9170201, Chile
| | - Rafael Gavara
- Packaging Laboratory, Institute of Agrochemistry and Food Technology, IATA-CSIC, Av. Agustín Escardino 7, 46980 Paterna, Spain;
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19
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A study on the physical, mechanical, thermal properties and soil biodegradation of HDPE blended with PBS/HDPE-g-MA. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03623-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Eum J, Kim Y, Um DJ, Shin J, Yang H, Jung H. Solvent-Free Polycaprolactone Dissolving Microneedles Generated via the Thermal Melting Method for the Sustained Release of Capsaicin. MICROMACHINES 2021; 12:167. [PMID: 33567577 PMCID: PMC7914501 DOI: 10.3390/mi12020167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 12/24/2022]
Abstract
(1) Background: Dissolving microneedles (DMNs), a transdermal drug delivery system, have been developed to treat various diseases in a minimally invasive, painless manner. However, the currently available DMNs are based on burst release systems due to their hydrophilic backbone polymer. Although hydrophobic biodegradable polymers have been employed on DMNs for sustained release, dissolution in an organic solvent is required for fabrication of such DMNs. (2) Method: To overcome the aforementioned limitation, novel separable polycaprolactone (PCL) DMNs (SPCL-DMNs) were developed to implant a PCL-encapsulated drug into the skin. PCL is highly hydrophobic, degrades over a long time, and has a low melting point. Under thermal melting, PCL encapsulated capsaicin and could be fabricated into a DMN without the risk of toxicity from an organic solvent. (3) Results: Optimized SPCL-DMNs, containing PCL (height 498.3 ± 5.8 µm) encapsulating 86.66 ± 1.13 µg capsaicin with a 10% (w/v) polyvinyl alcohol and 20% (w/v) polyvinylpyrrolidone mixture as a base polymer, were generated. Assessment of the drug release profile revealed that this system could sustainably release capsaicin for 15 days from PCL being implanted in porcine skin. (4) Conclusion: The implantable SPCL-DMN developed here has the potential for future development of toxicity-free, sustained release DMNs.
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Affiliation(s)
- Jaehong Eum
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | - Youseong Kim
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | - Daniel Junmin Um
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | - Jiwoo Shin
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | | | - Hyungil Jung
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
- JUVIC Inc., Seoul 08389, Korea;
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21
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Halevas E, Kokotidou C, Zaimai E, Moschona A, Lialiaris E, Mitraki A, Lialiaris T, Pantazaki A. Evaluation of the Hemocompatibility and Anticancer Potential of Poly( ε-Caprolactone) and Poly(3-Hydroxybutyrate) Microcarriers with Encapsulated Chrysin. Pharmaceutics 2021; 13:109. [PMID: 33467090 PMCID: PMC7831015 DOI: 10.3390/pharmaceutics13010109] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 01/18/2023] Open
Abstract
In this work, novel chrysin-loaded poly(ε-caprolactone) and poly(3-hydroxybutyrate) microcarriers were synthesized according to a modified oil-in-water single emulsion/solvent evaporation method, utilizing poly(vinyl alcohol) surfactant as stabilizer and dispersing agent for the emulsification, and were evaluated for their physico-chemical and morphological properties, loading capacity and entrapment efficiency and in vitro release of their load. The findings suggest that the novel micro-formulations possess a spherical and relatively wrinkled structure with sizes ranging between 2.4 and 24.7 µm and a highly negative surface charge with z-potential values between (-18.1)-(-14.1) mV. The entrapment efficiency of chrysin in the poly(ε-caprolactone) and poly(3-hydroxybutyrate) microcarriers was estimated to be 58.10% and 43.63%, whereas the loading capacity was found to be 3.79% and 15.85%, respectively. The average release percentage of chrysin was estimated to be 23.10% and 18.01%, respectively. The novel micromaterials were further biologically evaluated for their hemolytic activity through hemocompatibility studies over a range of hematological parameters and cytoxicity against the epithelial human breast cancer cell line MDA-MB 231. The poly(ε-caprolactone) and poly(3-hydroxybutyrate) microcarriers reached an IC50 value with an encapsulated chrysin content of 149.19 µM and 312.18 µM, respectively, and showed sufficient blood compatibility displaying significantly low (up to 2%) hemolytic percentages at concentrations between 5 and 500 µg·mL-1.
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Affiliation(s)
- Eleftherios Halevas
- Institute of Biosciences & Applications, National Centre for Scientific Research “Demokritos”, 15310 Athens, Greece
- Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Chrysoula Kokotidou
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 70013 Heraklion, Greece; (C.K.); (A.M.)
- Institute for Electronic Structure and Laser FORTH, N. Plastira 100, 70013 Heraklion, Greece
| | - Elda Zaimai
- Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Alexandra Moschona
- Laboratory of Organic Chemistry, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Laboratory of Natural Resources and Renewable Energies, Chemical Process and Energy Resources Institute, Centre for Research and Technology-Hellas (CERTH), 6th km Harilaou-Thermis, 57001 Thermi, Greece
| | - Efstratios Lialiaris
- Laboratory of Genetics, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece; (E.L.); (T.L.)
| | - Anna Mitraki
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 70013 Heraklion, Greece; (C.K.); (A.M.)
- Institute for Electronic Structure and Laser FORTH, N. Plastira 100, 70013 Heraklion, Greece
| | - Theodore Lialiaris
- Laboratory of Genetics, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece; (E.L.); (T.L.)
| | - Anastasia Pantazaki
- Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
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22
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Sun CY, Gránásy L, Stifler CA, Zaquin T, Chopdekar RV, Tamura N, Weaver JC, Zhang JAY, Goffredo S, Falini G, Marcus MA, Pusztai T, Schoeppler V, Mass T, Gilbert PUPA. Crystal nucleation and growth of spherulites demonstrated by coral skeletons and phase-field simulations. Acta Biomater 2021; 120:277-292. [PMID: 32590171 PMCID: PMC7116570 DOI: 10.1016/j.actbio.2020.06.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 01/07/2023]
Abstract
Spherulites are radial distributions of acicular crystals, common in biogenic, geologic, and synthetic systems, yet exactly how spherulitic crystals nucleate and grow is still poorly understood. To investigate these processes in more detail, we chose scleractinian corals as a model system, because they are well known to form their skeletons from aragonite (CaCO3) spherulites, and because a comparative study of crystal structures across coral species has not been performed previously. We observed that all 12 diverse coral species analyzed here exhibit plumose spherulites in their skeletons, with well-defined centers of calcification (CoCs), and crystalline fibers radiating from them. In 7 of the 12 species, we observed a skeletal structural motif not observed previously: randomly oriented, equant crystals, which we termed "sprinkles". In Acropora pharaonis, these sprinkles are localized at the CoCs, while in 6 other species, sprinkles are either layered at the growth front (GF) of the spherulites, or randomly distributed. At the nano- and micro-scale, coral skeletons fill space as much as single crystals of aragonite. Based on these observations, we tentatively propose a spherulite formation mechanism in which growth front nucleation (GFN) of randomly oriented sprinkles, competition for space, and coarsening produce spherulites, rather than the previously assumed slightly misoriented nucleations termed "non-crystallographic branching". Phase-field simulations support this mechanism, and, using a minimal set of thermodynamic parameters, are able to reproduce all of the microstructural variation observed experimentally in all of the investigated coral skeletons. Beyond coral skeletons, other spherulitic systems, from aspirin to semicrystalline polymers and chocolate, may also form according to the mechanism for spherulite formation proposed here. STATEMENT OF SIGNIFICANCE: Understanding the fundamental mechanisms of spherulite nucleation and growth has broad ranging applications in the fields of metallurgy, polymers, food science, and pharmaceutical production. Using the skeletons of reef-building corals as a model system for investigating these processes, we propose a new spherulite growth mechanism that can not only explain the micro-structural diversity observed in distantly related coral species, but may point to a universal growth mechanism in a wide range of biologically and technologically relevant spherulitic materials systems.
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Affiliation(s)
- Chang-Yu Sun
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA; Materials Science Program, University of Wisconsin, Madison, WI 53706, USA
| | - László Gránásy
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, PO Box 49, 1525 Budapest, Hungary
| | - Cayla A Stifler
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA
| | - Tal Zaquin
- University of Haifa, Marine Biology Department, Mt. Carmel, Haifa 31905, Israel
| | - Rajesh V Chopdekar
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Nobumichi Tamura
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - James C Weaver
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
| | - Jun A Y Zhang
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA
| | - Stefano Goffredo
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Selmi 3, I-40126 Bologna, Italy; Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032 Fano, Pesaro Urbino, Italy
| | - Giuseppe Falini
- Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - University of Bologna, Via Selmi 2, 40126 Bologna, Italy; Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032 Fano, Pesaro Urbino, Italy
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Tamás Pusztai
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, PO Box 49, 1525 Budapest, Hungary
| | - Vanessa Schoeppler
- B CUBE-Center for Molecular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Tali Mass
- University of Haifa, Marine Biology Department, Mt. Carmel, Haifa 31905, Israel
| | - Pupa U P A Gilbert
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA; Departments of Chemistry, Geoscience, Materials Science, University of Wisconsin, Madison, WI 53706, USA.
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23
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Blanchard A, Melis F, Gouanvé F, Brouillat J, Espuche E. Influence of the PVOHmolar mass on the morphology and functional properties of EVOH/ PVOHfilms prepared by melt blending. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anthony Blanchard
- Ingénierie des Matériaux Polymères Univ Lyon, Université Claude Bernard Lyon1, UMR CNRS 5223 Lyon France
| | - Flavien Melis
- Ingénierie des Matériaux Polymères Univ Lyon, Université Claude Bernard Lyon1, UMR CNRS 5223 Lyon France
| | - Fabrice Gouanvé
- Ingénierie des Matériaux Polymères Univ Lyon, Université Claude Bernard Lyon1, UMR CNRS 5223 Lyon France
| | | | - Eliane Espuche
- Ingénierie des Matériaux Polymères Univ Lyon, Université Claude Bernard Lyon1, UMR CNRS 5223 Lyon France
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24
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Guenoun G, Schmitt N, Roux S, Régnier G. Crystalline orientation assessment in transversely isotropic semicrystalline polymer: Application to oedometric compaction of
PTFE. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gabriel Guenoun
- LMT, ENS‐Paris‐Saclay/CNRS Université Paris‐Saclay Cachan France
- PIMM, Arts et Métiers, CNRS, CNAM HESAM Université Paris France
- Saint‐Gobain Research Paris Aubervilliers France
| | - Nicolas Schmitt
- LMT, ENS‐Paris‐Saclay/CNRS Université Paris‐Saclay Cachan France
- INSPE Université Paris‐Est Créteil Val‐de‐Marne Saint‐Denis France
| | - Stéphane Roux
- LMT, ENS‐Paris‐Saclay/CNRS Université Paris‐Saclay Cachan France
| | - Gilles Régnier
- PIMM, Arts et Métiers, CNRS, CNAM HESAM Université Paris France
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25
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Rykowska I, Nowak I, Nowak R. Drug-Eluting Stents and Balloons-Materials, Structure Designs, and Coating Techniques: A Review. Molecules 2020; 25:E4624. [PMID: 33050663 PMCID: PMC7594099 DOI: 10.3390/molecules25204624] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/25/2020] [Accepted: 09/27/2020] [Indexed: 12/19/2022] Open
Abstract
Controlled drug delivery is a matter of interest to numerous scientists from various domains, as well as an essential issue for society as a whole. In the treatment of many diseases, it is crucial to control the dosing of a drug for a long time and thus maintain its optimal concentration in the tissue. Heart diseases are particularly important in this aspect. One such disease is an obstructive arterial disease affecting millions of people around the world. In recent years, stents and balloon catheters have reached a significant position in the treatment of this condition. Balloon catheters are also successfully used to manage tear ducts, paranasal sinuses, or salivary glands disorders. Modern technology is continually striving to improve the results of previous generations of stents and balloon catheters by refining their design, structure, and constituent materials. These advances result in the development of both successive models of drug-eluting stents (DES) and drug-eluting balloons (DEB). This paper presents milestones in the development of DES and DEB, which are a significant option in the treatment of coronary artery diseases. This report reviews the works related to achievements in construction designs and materials, as well as preparation technologies, of DES and DEB. Special attention was paid to the polymeric biodegradable materials used in the production of the above-mentioned devices. Information was also collected on the various methods of producing drug release coatings and their effectiveness in releasing the active substance.
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Affiliation(s)
- I. Rykowska
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;
| | - I. Nowak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;
| | - R. Nowak
- Eye Department, J. Strus City Hospital, Szwajcarska 3, 61-285 Poznań, Poland;
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26
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Zhang P, Zhao Y, Yu R, Liao J. Confined crystallization and degradation of six-arm star PCL with core of cyclotriphosphazene in epoxy thermosets. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Martins C, Chauhan VM, Araújo M, Abouselo A, Barrias CC, Aylott JW, Sarmento B. Advanced polymeric nanotechnology to augment therapeutic delivery and disease diagnosis. Nanomedicine (Lond) 2020; 15:2287-2309. [PMID: 32945230 DOI: 10.2217/nnm-2020-0145] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Therapeutic and diagnostic payloads are usually associated with properties that compromise their efficacy, such as poor aqueous solubility, short half-life, low bioavailability, nonspecific accumulation and diverse side effects. Nanotechnological solutions have emerged to circumvent some of these drawbacks, augmenting therapeutic and/or diagnostic outcomes. Nanotechnology has benefited from the rise in polymer science research for the development of novel nanosystems for therapeutic and diagnostic purposes. Polymers are a widely used class of biomaterials, with a considerable number of regulatory approvals for application in clinics. In addition to their versatility in production and functionalization, several synthetic and natural polymers demonstrate biocompatible properties that dictate their successful biological performance. This article highlights the physicochemical characteristics of a variety of natural and synthetic biocompatible polymers, as well as their role in the manufacture of nanotechnology-based systems, state-of-art applications in disease treatment and diagnosis, and current challenges in finding a way to clinics.
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Affiliation(s)
- Cláudia Martins
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal.,School of Pharmacy, Boots Science Building, University of Nottingham, Nottingham, NG7 2RD, UK.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Ruade Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Veeren M Chauhan
- School of Pharmacy, Boots Science Building, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Marco Araújo
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal
| | - Amjad Abouselo
- School of Pharmacy, Boots Science Building, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Cristina C Barrias
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal
| | - Jonathan W Aylott
- School of Pharmacy, Boots Science Building, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Bruno Sarmento
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-393, Porto, Portugal.,CESPU - Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116, Gandra, Portugal
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28
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Stewart S, Domínguez-Robles J, McIlorum VJ, Gonzalez Z, Utomo E, Mancuso E, Lamprou DA, Donnelly RF, Larrañeta E. Poly(caprolactone)-Based Coatings on 3D-Printed Biodegradable Implants: A Novel Strategy to Prolong Delivery of Hydrophilic Drugs. Mol Pharm 2020; 17:3487-3500. [PMID: 32672976 PMCID: PMC7482401 DOI: 10.1021/acs.molpharmaceut.0c00515] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/14/2020] [Accepted: 07/16/2020] [Indexed: 01/18/2023]
Abstract
Implantable devices are versatile and promising drug delivery systems, and their advantages are well established. Of these advantages, long-acting drug delivery is perhaps the most valuable. Hydrophilic compounds are particularly difficult to deliver for prolonged times. This work investigates the use of poly(caprolactone) (PCL)-based implant coatings as a novel strategy to prolong the delivery of hydrophilic compounds from implantable devices that have been prepared by additive manufacturing (AM). Hollow implants were prepared from poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVA) using fused filament fabrication (FFF) AM and subsequently coated in a PCL-based coating. Coatings were prepared by solution-casting mixtures of differing molecular weights of PCL and poly(ethylene glycol) (PEG). Increasing the proportion of low-molecular-weight PCL up to 60% in the formulations decreased the crystallinity by over 20%, melting temperature by over 4 °C, and water contact angle by over 40°, resulting in an increased degradation rate when compared to pure high-molecular-weight PCL. Addition of 30% PEG to the formulation increased the porosity of the formulation by over 50% when compared to an equivalent PCL-only formulation. These implants demonstrated in vitro release rates for hydrophilic model compounds (methylene blue and ibuprofen sodium) ranging from 0.01 to 34.09 mg/day, depending on the drug used. The versatility of the devices produced in this work and the range of release rates achievable show great potential. Implants could be specifically developed in order to match the specific release rate required for a number of drugs for a wide range of conditions.
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Affiliation(s)
- Sarah
A. Stewart
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
| | - Juan Domínguez-Robles
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
| | - Victoria J. McIlorum
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
| | - Zoilo Gonzalez
- Instituto
De Cerámica y Vidrio, CSIC, c/Kelsen, 5, 28049 Madrid, Spain
| | - Emilia Utomo
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
| | - Elena Mancuso
- Nanotechnology
and Integrated Bio-Engineering Centre (NIBEC), Ulster University, Jordanstown BT37 0QB, U.K.
| | - Dimitrios A. Lamprou
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
| | - Ryan F. Donnelly
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
| | - Eneko Larrañeta
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
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29
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Pan J, Chen F, Cabrera ED, Min Z, Ruan S, Wu M, Zhang D, Castro JM, Lee LJ. Carbon particulate and controlled-hydrolysis assisted extrusion foaming of semi-crystalline polyethylene terephthalate for the enhanced thermal insulation property. J CELL PLAST 2020. [DOI: 10.1177/0021955x20952751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This work presents a facile method to produce low-density PET foams using pristine semi-crystalline resin by moisture-induced controlled-hydrolysis in a tight processing window (moisture content ∼ 0.12 wt.%). We investigated the effect of moisture and moisture containing activated carbon (AC) on the foam expansion ratio, cell morphology, and PET resin degradation and crystallization properties. Controlled-hydrolysis increased the melt-flow rate of PET resin (intrinsic viscosity: 0.52 to 0.54 dL/g) without losing crystallinity, and thus the PET foams possess better tensile properties (∼2 MPa stress and ∼100% strain) and higher thermal stability (>200°C) than chemically modified PET foams. The foam density could be made as low as ∼ 0.15 g/cm3 using a lab scale twin-screw extruder. A strand array die was also designed to produce plate-shaped foam samples. AC allowed easier control of the moisture content and delayed resin degradation in extrusion. Both AC and micrographite (mGr) could stabilize the PET foam morphology in extrusion and serve as good infrared attenuation agents (IAAs) in a simulated housing thermal insulation experiment.
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Affiliation(s)
- Junjie Pan
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Feng Chen
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, P. R. China
- State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, P. R. China
| | - Eusebio Duarte Cabrera
- Department of Integrated Systems and Engineering, The Ohio State University, Columbus, OH, USA
| | - Zhiyu Min
- School of Material Science and Engineering, Luoyang Institute of Science and Technology, Luoyang, P. R. China
| | - Shilun Ruan
- State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, P. R. China
| | - Min Wu
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Dan Zhang
- Department of Integrated Systems and Engineering, The Ohio State University, Columbus, OH, USA
| | - Jose M Castro
- Department of Integrated Systems and Engineering, The Ohio State University, Columbus, OH, USA
| | - L James Lee
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
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Poly(ε-caprolactone) Titanium Dioxide and Cefuroxime Antimicrobial Scaffolds for Cultivation of Human Limbal Stem Cells. Polymers (Basel) 2020; 12:polym12081758. [PMID: 32781567 PMCID: PMC7465675 DOI: 10.3390/polym12081758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/23/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022] Open
Abstract
Limbal Stem Cell Deficiency (LSCD) is a very serious and painful disease that often results in impaired vision. Cultivation of limbal stem cells for clinical application is usually performed on carriers such as amniotic membrane or surgical fibrin gel. Transplantation of these grafts is associated with the risk of local postoperative infection that can destroy the graft and devoid therapeutic benefit. For this reason, electrospun scaffolds are good alternatives, as proven to mimic the natural cells surroundings, while their fabrication technique is versatile with regard to polymer functionalization and scaffolds architecture. This study considers the development of poly(ε-caprolactone) (PCL) immune-compatible and biodegradable electrospun scaffolds, comprising cefuroxime (CF) or titanium dioxide (TiO2) active components, that provide both bactericidal activity against eye infections and support of limbal stem cells growth in vitro. The PCL/CF scaffolds were prepared by blend electrospinning, while functionalization with the TiO2 particles was performed by ultrasonic post-processing treatment. The fabricated scaffolds were evaluated in regard to their physical structure, wetting ability, static and dynamic mechanical behaviour, antimicrobial efficiency and drug release, through scanning electron microscopy, water contact angle measurement, tensile testing and dynamic mechanical analysis, antimicrobial tests and UV-Vis spectroscopy, respectively. Human limbal stem cells, isolated from surgical remains of human cadaveric cornea, were cultured on the PCL/CF and PCL/TiO2 scaffolds and further identified through immunocytochemistry in terms of cell type thus were stained against p63 marker for limbal stem cells, a nuclear transcription factor and cytokeratin 3 (CK3), a corneal epithelial differentiation marker. The electrospun PCL/CF and PCL/TiO2 successfully supported the adhesion, proliferation and differentiation of the cultivated limbal cells and provided the antimicrobial effect against Pseudomonas aeruginosa, Staphylococcus aureus and Candida albicans.
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31
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Hamideh RA, Akbari B, Fathi P, Misra SK, Sutrisno A, Lam F, Pan D. Biodegradable MRI Visible Drug Eluting Stent Reinforced by Metal Organic Frameworks. Adv Healthc Mater 2020; 9:e2000136. [PMID: 32548977 DOI: 10.1002/adhm.202000136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/13/2020] [Indexed: 12/18/2022]
Abstract
Metal-organic frameworks (MOFs) have applications in numerous fields. However, the development of MOF-based "theranostic" macroscale devices is not achieved. Here, heparin-coated biocompatible MOF/poly(ε-caprolactone) (PCL) "theranostic" stents are developed, where NH2 -Materials of Institute Lavoisier (MIL)-101(Fe) encapsulates and releases rapamycin (an immunosuppressive drug). These stents also act as a remarkable source of contrast in ex vivo magnetic resonance imaging (MRI) compared to the invisible polymeric stent. The in vitro release patterns of heparin and rapamycin respectively can ensure a type of programmed model to prevent blood coagulation immediately after stent placement in the artery and stenosis over a longer term. Due to the presence of hydrolysable functionalities in MOFs, the stents are shown to be highly biodegradable in degradation tests under various conditions. Furthermore, there is no compromise of mechanical strength or flexibility with MOF compositing. The system described here promises many biomedical applications in macroscale theranostic devices. The use of MOF@PCL can render a medical device MRI-visible while simultaneously acting as a carrier for therapeutic agents.
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Affiliation(s)
- Rezvani Alanagh Hamideh
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, P.O. Box 14395-1561, Tehran, Iran
- Department of Bioengineering, Beckman Institute of Advanced Science and Technology, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 611 West Park Street, Urbana, IL, 61801, USA
| | - Babak Akbari
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, P.O. Box 14395-1561, Tehran, Iran
| | - Parinaz Fathi
- Department of Bioengineering, Beckman Institute of Advanced Science and Technology, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 611 West Park Street, Urbana, IL, 61801, USA
| | - Santosh K Misra
- Department of Bioengineering, Beckman Institute of Advanced Science and Technology, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 611 West Park Street, Urbana, IL, 61801, USA
| | - Andre Sutrisno
- NMR/EPR Laboratory, School of Chemical Sciences, University of Illinois at Urbana-Champaign, IL, USA
| | - Fan Lam
- Department of Bioengineering, Beckman Institute of Advanced Science and Technology, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 611 West Park Street, Urbana, IL, 61801, USA
| | - Dipanjan Pan
- Department of Bioengineering, Beckman Institute of Advanced Science and Technology, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 611 West Park Street, Urbana, IL, 61801, USA
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Baltimore, Health Sciences Facility III, 670 W Baltimore St., Baltimore, MD, 21201, USA
- Department of Pediatrics, University of Maryland Baltimore, Health Sciences Facility III, 670 W Baltimore St., Baltimore, MD, 21201, USA
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary Health Sciences Facility, 1000 Hilltop Circle, Baltimore, MD, 21250, USA
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Van de Voorde KM, Pokorski JK, Korley LTJ. Exploring Morphological Effects on the Mechanics of Blended Poly(lactic acid)/Poly(ε-caprolactone) Extruded Fibers Fabricated Using Multilayer Coextrusion. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00289] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kris M. Van de Voorde
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Jonathan K. Pokorski
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
- Institute for Materials Discovery and Design, University of California San Diego, La Jolla, California 92093, United States
| | - LaShanda T. J. Korley
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
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33
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Meng Z, He J, Cai Z, Zhang M, Zhang J, Ling R, Li D. In-situ re-melting and re-solidification treatment of selective laser sintered polycaprolactone lattice scaffolds for improved filament quality and mechanical properties. Biofabrication 2020; 12:035012. [PMID: 32240988 DOI: 10.1088/1758-5090/ab860e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Selective laser sintering (SLS) is a promising additive manufacturing technique that produces biodegradable tissue-engineered scaffolds with highly porous architectures without additional supporting. However, SLS process inherently results in partially melted microstructures which significantly impair the mechanical properties of the resultant scaffolds for potential applications in tissue engineering and regenerative medicine. Here, a novel post-treatment strategy was developed to endow the SLS-fabricated polycaprolactone (PCL) scaffolds with dense morphology and enhanced mechanical properties by embedding them in dense NaCl microparticles for in-situ re-melting and re-solidification. The effects of re-melting temperature and dwelling time on the microstructures of the SLS-fabricated filaments were studied. The results demonstrated that the minimum requirements of re-melting temperature and dwelling time for sufficient treatment were 65 °C and 5 min respectively and the size of the SLS-fabricated filaments was reduced from 683.3 ± 28.0 μm to 601.6 ± 17.4 μm. This method was also highly effective in treating three-dimensional (3D) PCL lattice scaffolds, which showed improved filament quality and mechanical properties after post-treatment. The treated PCL scaffolds with an initial compressive modulus and strength of 3027.8 ± 204.2 kPa and 208.8 ± 14.5 kPa can maintain their original shapes after implantation in vivo for 24 weeks. Extensive newly-grown tissues were found to gradually penetrate into the porous regions along the PCL filaments. Although degradation occurred, the mechanical properties of the implanted constructs stably maintained. The presented method provides an innovative, green and general post-treatment strategy to improve both the filament quality and mechanical properties of SLS-fabricated PCL scaffolds for various tissue engineering applications.
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Affiliation(s)
- Zijie Meng
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China. Rapid manufacturing research center of Shaanxi Province, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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34
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Gaihre B, Liu X, Lee Miller A, Yaszemski M, Lu L. Poly(Caprolactone Fumarate) and Oligo[Poly(Ethylene Glycol) Fumarate]: Two Decades of Exploration in Biomedical Applications. POLYM REV 2020. [DOI: 10.1080/15583724.2020.1758718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Michael Yaszemski
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
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35
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Barletta M, Aversa C, Puopolo M. Recycling of
PLA
‐based bioplastics: The role of chain‐extenders in twin‐screw extrusion compounding and cast extrusion of sheets. J Appl Polym Sci 2020. [DOI: 10.1002/app.49292] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Clizia Aversa
- Dipartimento di IngegneriaUniversità degli Studi Roma Tre Rome Italy
| | - Michela Puopolo
- Dipartimento di IngegneriaUniversità degli Studi Roma Tre Rome Italy
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Abstract
BACKGROUND Orbital fractures are one of the most common sequelae of facial trauma. OBJECTIVE The objective of this study was to summarize published data for resorbable implants in orbital reconstruction, including polymer composition, degradation characteristics, osteoconductivity, and complications such as enophthalmos, diplopia, and peri-implant inflammation. A literature search of the National Library of Medicine was performed via PubMed using the keyword resorbable orbital implant. A total of 27 studies were reviewed. Strength of data was assessed according to the Oxford Centre criteria. RESULTS Most commercially available implants provide adequate tensile strength for up to 6 months (with the exception of polydioxanone, which loses strength within 1 month, and poly(D,L-lactide) within 3 months). This is sufficient for the isolated orbital floor or medial wall (tensile strength, ~300 MPa) but insufficient for reconstruction of load-bearing areas (eg, the inferior orbital rim with tensile strength of ~1.2 GPa). Thicker products (>1 mm) have increased risk for delayed inflammation than thinner products. Postoperative complications including delayed inflammation (0%-9%), eyelid malposition (0%-5%), enophthalmos (5%-16%), diplopia (0%-16%), infection (0%-2%), and infraorbital nerve hypesthesia (2%-18%) are variably distributed across implants with several notable exceptions: poly(L-lactide) has an increased risk of delayed inflammation, and polydioxanone has a risk of delayed enophthalmos and hematoma. CONCLUSIONS Resorbable implants are suitable for isolated medial wall or floor fractures with intact bony buttresses and function as a barrier rather than a load-bearing support.
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Jain S, Fuoco T, Yassin MA, Mustafa K, Finne-Wistrand A. Printability and Critical Insight into Polymer Properties during Direct-Extrusion Based 3D Printing of Medical Grade Polylactide and Copolyesters. Biomacromolecules 2019; 21:388-396. [DOI: 10.1021/acs.biomac.9b01112] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shubham Jain
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden
| | - Tiziana Fuoco
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden
| | - Mohammed A. Yassin
- Tissue Engineering Group, Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Norway, Årstadveien 19, 5009 Bergen, Norway
| | - Kamal Mustafa
- Tissue Engineering Group, Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Norway, Årstadveien 19, 5009 Bergen, Norway
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden
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39
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Optimal mechanical properties of biodegradable natural rubber-toughened PHBV bioplastics intended for food packaging applications. Food Packag Shelf Life 2019. [DOI: 10.1016/j.fpsl.2019.100348] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Fuoco T, Finne-Wistrand A. Enhancing the Properties of Poly(ε-caprolactone) by Simple and Effective Random Copolymerization of ε-Caprolactone with p-Dioxanone. Biomacromolecules 2019; 20:3171-3180. [PMID: 31268691 DOI: 10.1021/acs.biomac.9b00745] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We have developed a straightforward strategy to obtain semicrystalline and random copolymers of ε-caprolactone (CL) and p-dioxanone (DX) with thermal stabilities similar to poly(ε-caprolactone), PCL, but with a faster hydrolytic degradation rate. CL/DX copolymers are promising inks when printing scaffolds aimed for tissue engineering. Such copolymers behave similar to PCL and resorb faster. The copolymers were synthesized by bulk ring-opening copolymerization, achieving a high yield; a molecular weight, Mn, of 57-176 kg mol-1; and an inherent viscosity of 1.7-1.9 dL g-1. The copolymer microstructure consisted of long CL blocks that are separated by isolated DX units. The block length and the melting point were a linear function of the DX content. The copolymers crystallize as an orthorhombic lattice that is typical for PCL, and they formed more elastic, softer, and less hydrophobic films with faster degradation rates than PCL. Relatively high thermal degradation temperatures (above 250 °C), similar to PCL, were estimated by thermogravimetric analysis, and copolymer filaments for three-dimensional printing and scaffolds were produced without thermal degradation.
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Affiliation(s)
- Tiziana Fuoco
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen, 56-58 , SE 100-44 Stockholm , Sweden
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen, 56-58 , SE 100-44 Stockholm , Sweden
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41
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Effects of nanoparticle addition to poly(ε-caprolactone) electrolytes: Crystallinity, conductivity and ambient temperature battery cycling. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.117] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Mahalakshmi S, Alagesan T, Parthasarathy V, Anbarasan R. Micro structural and non-isothermal crystallization and degradation kinetics studies on manganese thioglycolate end capped poly(ε-caprolactone). POLYM ENG SCI 2019. [DOI: 10.1002/pen.24979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- S. Mahalakshmi
- Department of Physics; Anand Institute of Higher Technology; Kazhipattur, 603 103, Chennai Tamilnadu India
| | - T. Alagesan
- Department of Physics; Presidency College; Chennai 600 005 Tamilnadu India
| | - V. Parthasarathy
- Departmentof Physics; Hindustan Institute of Technology and Science; Padur, 603 103, Chennai Tamilnadu India
| | - R. Anbarasan
- Department of Chemical Engineering; Membrane Filtration Lab, National Taiwan University; Taipei 10617 Taiwan, Republic of China
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43
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Espinoza SM, Patil HI, San Martin Martinez E, Casañas Pimentel R, Ige PP. Poly-ε-caprolactone (PCL), a promising polymer for pharmaceutical and biomedical applications: Focus on nanomedicine in cancer. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2018.1539990] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sergio Miguel Espinoza
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Legaria 694, Col. Irrigación, 11500 Ciudad de México
| | - Harshal Indrabhan Patil
- Department of Pharmaceutics, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Dhule, Maharashtra 425405, India
| | - Eduardo San Martin Martinez
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Legaria 694, Col. Irrigación, 11500 Ciudad de México
| | - Rocio Casañas Pimentel
- CONACYT-Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Legaria 694, Col. Irrigación, 11500 Ciudad de México
| | - Pradum Pundlikrao Ige
- Department of Pharmaceutics, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Dhule, Maharashtra 425405, India
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44
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Cajero-Zul LR, López-Dellamary FA, Gómez-Salazar S, Vázquez-Lepe M, Vera-Graziano R, Torres-Vitela MR, Olea-Rodríguez MA, Nuño-Donlucas SM. Evaluation of the resistance to bacterial growth of star-shaped poly(ε-caprolactone)-co-poly(ethylene glycol) grafted onto functionalized carbon nanotubes nanocomposites. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 30:163-189. [PMID: 30556772 DOI: 10.1080/09205063.2018.1558487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nanocomposites of functionalized carbon nanotubes (CNTsf) as nanofillers, and a copolymer of star-shaped poly(ε-caprolactone) (stPCL) and poly(ethylene glycol) (PEG) as a polymeric matrix were synthesized, characterized, and their resistance to the growth of Staphylococcus aureus and Pseudomonas aeruginosa was evaluated. CNTsf contain hydroxyl, carboxyl and acyl chloride groups attached to their surface. Nanocomposites were prepared by mixing CNTsf to a solution of stPCL-PEG copolymer. Raman and FT-IR spectroscopies confirm the functionalization of carbon nanotubes (CNTs). Star-shaped PCL-PEG copolymer was characterized by Gel permeation chromatography (GPC), and 1H-NMR and 13C-NMR spectroscopies. X-ray photoelectron spectroscopy (XPS) shows that CNTsf are grafted to the stPCL-PEG copolymer. Crystallization behavior of the nanocomposites depends on the amount of CNTsf used in their preparation, detecting nucleation (nanocomposites prepared with 0.5 wt.% of CNTsf) or anti-nucleation (nanocomposites prepared with 1.0 wt.% of CNTsf) effects. Young's Moduli and thermal stability of nanocomposites were higher, but their resistence to the proliferation of Staphylococcus aureus and Pseudomonas aeruginosa was lower than the observed for their pure polymer matrix.
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Affiliation(s)
- L R Cajero-Zul
- a Departamento de Ingeniería Química , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias , Guadalajara , México
| | - F A López-Dellamary
- b Departamento de Madera Celulosa y Papel , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias. Carretera a Nogales , Zapopan , México
| | - S Gómez-Salazar
- a Departamento de Ingeniería Química , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias , Guadalajara , México
| | - M Vázquez-Lepe
- c Departamento de Ingeniería de Proyectos , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias , Zapopan , México
| | - R Vera-Graziano
- d Instituto de Investigaciones en Materiales , Universidad Nacional Autónoma de México , CDMX , México
| | - M R Torres-Vitela
- e Departamento de Farmacobiología , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias , Guadalajara , México
| | - M A Olea-Rodríguez
- e Departamento de Farmacobiología , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias , Guadalajara , México
| | - S M Nuño-Donlucas
- a Departamento de Ingeniería Química , Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierias , Guadalajara , México
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Stewart SA, Domínguez-Robles J, Donnelly RF, Larrañeta E. Implantable Polymeric Drug Delivery Devices: Classification, Manufacture, Materials, and Clinical Applications. Polymers (Basel) 2018; 10:E1379. [PMID: 30961303 PMCID: PMC6401754 DOI: 10.3390/polym10121379] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 12/10/2018] [Indexed: 12/27/2022] Open
Abstract
The oral route is a popular and convenient means of drug delivery. However, despite its advantages, it also has challenges. Many drugs are not suitable for oral delivery due to: first pass metabolism; less than ideal properties; and side-effects of treatment. Additionally, oral delivery relies heavily on patient compliance. Implantable drug delivery devices are an alternative system that can achieve effective delivery with lower drug concentrations, and as a result, minimise side-effects whilst increasing patient compliance. This article gives an overview of classification of these drug delivery devices; the mechanism of drug release; the materials used for manufacture; the various methods of manufacture; and examples of clinical applications of implantable drug delivery devices.
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Affiliation(s)
- Sarah A Stewart
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Juan Domínguez-Robles
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Eneko Larrañeta
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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46
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Chang D, Li T, Li L, Jakowski J, Huang J, Keum JK, Lee B, Bonnesen PV, Zhou M, Garashchuk S, Sumpter BG, Hong K. Selectively Deuterated Poly(ε-caprolactone)s: Synthesis and Isotope Effects on the Crystal Structures and Properties. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01851] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Dongsook Chang
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Tianyu Li
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Lengwan Li
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jacek Jakowski
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jingsong Huang
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jong Kahk Keum
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Chemical and Engineering Materials Division, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Byeongdu Lee
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Peter V. Bonnesen
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Mi Zhou
- College of Materials Science and Engineering, Zhejiang University of Technology, Zhejiang 310014, China
| | - Sophya Garashchuk
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Kunlun Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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47
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Balali S, Davachi SM, Sahraeian R, Shiroud Heidari B, Seyfi J, Hejazi I. Preparation and Characterization of Composite Blends Based on Polylactic Acid/Polycaprolactone and Silk. Biomacromolecules 2018; 19:4358-4369. [DOI: 10.1021/acs.biomac.8b01254] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shiva Balali
- Department of Chemical and Polymer Engineering, Faculty of Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Mohammad Davachi
- Department of Chemical and Polymer Engineering, Faculty of Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
- Soft Tissue Engineering Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Razi Sahraeian
- Composites Department, Faculty of Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14975/112, Tehran, Iran
| | - Behzad Shiroud Heidari
- Applied Science Nano Research Group, ASNARKA, Tehran, Iran
- Vascular Engineering Laboratory, Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands and Centre for Medical Research, The University of Western Australia, Perth, Australia
- School of Engineering, The University of Western Australia, Perth, Australia
| | - Javad Seyfi
- Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, P.O. Box 36155-163, Shahrood, Iran
| | - Iman Hejazi
- Applied Science Nano Research Group, ASNARKA, Tehran, Iran
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Yang Y, Chen M, Li H, Li H. The degree of crystallinity exhibiting a spatial distribution in polymer films. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Arbade GK, Jathar S, Tripathi V, Patro TU. Antibacterial, sustained drug release and biocompatibility studies of electrospun poly(
ε
-caprolactone)/chloramphenicol blend nanofiber scaffolds. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aac1a4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Synthesis, Characterization, and Visible Light Curing Capacity of Polycaprolactone Acrylate. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8719624. [PMID: 29854803 PMCID: PMC5964557 DOI: 10.1155/2018/8719624] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 02/13/2018] [Accepted: 03/27/2018] [Indexed: 11/18/2022]
Abstract
Polycaprolactone (PCL) is drawing increasing attention in the field of medical 3D printing and tissue engineering because of its biodegradability. This study developed polycaprolactone prepolymers that can be cured using visible light. Three PCL acrylates were synthesized: polycaprolactone-530 diacrylate (PCL530DA), glycerol-3 caprolactone triacrylate (Glycerol-3CL-TA), and glycerol-6 caprolactone triacrylate (Glycerol-6CL-TA). PCL530DA has two acrylates, whereas Glycerol-3CL-TA and Glycerol-6CL-TA have three acrylates. The Fourier transform infrared and nuclear magnetic resonance spectra suggested successful synthesis of all PCL acrylates. All are liquid at room temperature and can be photopolymerized into a transparent solid after exposure to 470 nm blue LED light using 1% camphorquinone as photoinitiator and 2% dimethylaminoethyl methacrylate as coinitiator. The degree of conversion for all PCL acrylates can reach more than 80% after 1 min of curing. The compressive modulus of PCL530DA, Glycerol-3CL-TA, and Glycerol-6CL-TA is 65.7 ± 12.7, 80.9 ± 6.1, and 32.1 ± 4.1 MPa, respectively, and their compressive strength is 5.3 ± 0.29, 8.3 ± 0.18, and 3.0 ± 0.53 MPa, respectively. Thus, all PCL acrylates synthesized in this study can be photopolymerized and because of their solid structure and low viscosity, they are applicable to soft tissue engineering and medical 3D printing.
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