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Dodda JM, Azar MG, Bělský P, Šlouf M, Gajdošová V, Kasi PB, Anerillas LO, Kovářík T. Bioresorbable films of polycaprolactone blended with poly(lactic acid) or poly(lactic-co-glycolic acid). Int J Biol Macromol 2023; 248:126654. [PMID: 37659482 DOI: 10.1016/j.ijbiomac.2023.126654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/26/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Recent complications on the use of polypropylene meshes for hernia repair has led to the development of meshes or films, which were based on resorbable polymers such as polycaprolactone (PCL), polylactic acid (PLA) and poly(lactic-co-glycolic acid) (PLGA). These materials are able to create suitable bioactive environment for the growth and development of cells. In this research, we mainly focused on the relations among structure, mechanical performance and biocompatiblity of PCL/PLA and PCL/PLGA and blends prepared by solution casting. The films were characterized regarding the chemical structure, morphology, physicochemical properties, cytotoxicity, biocompatibility and cell growth. All the films showed high tensile strength ranging from 9.5 to 11.8 MPa. SAXS showed that the lamellar stack structure typical for PCL was present even in the blend films while the morphological parameters of the stacks varied slightly with the content of PLGA or PLA in the blends. WAXS indicated preferential orientation of crystallites (and thus, also the lamellar stacks) in the blend films. In vitro studies revealed that PCL/PLGA films displayed better cell adhesion, spreading and proliferation than PCL/PLA and PCL films. Further the effect of blending on the degradation was investigated, to understand the significant variable within the process that could provide further control of cell adhesion. The results showed that the investigated blend films are promising materials for biomedical applications.
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Affiliation(s)
- Jagan Mohan Dodda
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech Republic.
| | - Mina Ghafouri Azar
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech Republic
| | - Petr Bělský
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech Republic
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Veronika Gajdošová
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Phanindra Babu Kasi
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine in Pilsen, Charles University, Karlovarská 48, 301 66 Plzeň, Czech Republic
| | | | - Tomáš Kovářík
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech Republic
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Wang Z, Schaller M, Petzold A, Saalwächter K, Thurn-Albrecht T. How entanglements determine the morphology of semicrystalline polymers. Proc Natl Acad Sci U S A 2023; 120:e2217363120. [PMID: 37379326 PMCID: PMC10319027 DOI: 10.1073/pnas.2217363120] [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: 10/12/2022] [Accepted: 05/27/2023] [Indexed: 06/30/2023] Open
Abstract
Crystallization of polymers from entangled melts generally leads to the formation of semicrystalline materials with a nanoscopic morphology consisting of stacks of alternating crystalline and amorphous layers. The factors controlling the thickness of the crystalline layers are well studied; however, there is no quantitative understanding of the thickness of the amorphous layers. We elucidate the effect of entanglements on the semicrystalline morphology by the use of a series of model blends of high-molecular-weight polymers with unentangled oligomers leading to a reduced entanglement density in the melt as characterized by rheological measurements. Small-angle X-ray scattering experiments after isothermal crystallization reveal a reduced thickness of the amorphous layers, while the crystal thickness remains largely unaffected. We introduce a simple, yet quantitative model without adjustable parameters, according to which the measured thickness of the amorphous layers adjusts itself in such a way that the entanglement concentration reaches a specific maximum value. Furthermore, our model suggests an explanation for the large supercooling that is typically required for crystallization of polymers if entanglements cannot be dissolved during crystallization.
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Affiliation(s)
- Zefan Wang
- Institut für Physik—Martin-Luther-Universität, Halle-Wittenberg, Halle06099, Germany
- School of Chemistry and Environmental Engineering, Shenzen University, 518060, China
| | - Mareen Schaller
- Institut für Physik—Martin-Luther-Universität, Halle-Wittenberg, Halle06099, Germany
- Institut für Angewandte Materialien, Karlsruher Institut für Technologie, Eggenstein-Leopoldshafen, 76344Germany
| | - Albrecht Petzold
- Institut für Physik—Martin-Luther-Universität, Halle-Wittenberg, Halle06099, Germany
| | - Kay Saalwächter
- Institut für Physik—Martin-Luther-Universität, Halle-Wittenberg, Halle06099, Germany
| | - Thomas Thurn-Albrecht
- Institut für Physik—Martin-Luther-Universität, Halle-Wittenberg, Halle06099, Germany
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3
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Entanglement on Nucleation Barrier of Polymer Crystal. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2780-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Liu M, Chen J, Luo J, Min J, Fu Q, Zhang J. Investigating the disentanglement of long chain branched polypropylene under different shear fields. J Appl Polym Sci 2022. [DOI: 10.1002/app.51642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mingjin Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Jin Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Jiaxu Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Jie Min
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Qiang Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Jie Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
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Nile R, Rajput H, Sims C, Jin K. Sensing the melting transition of semicrystalline polymers via a novel fluorescence technique. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Campa-Siqueiros PI, Madera-Santana TJ, Castillo-Ortega MM, López-Cervantes J, Ayala-Zavala JF, Ortiz-Vazquez EL. Electrospun and co-electrospun biopolymer nanofibers for skin wounds on diabetic patients: an overview. RSC Adv 2021; 11:15340-15350. [PMID: 35424077 PMCID: PMC8698239 DOI: 10.1039/d1ra02986j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 04/19/2021] [Indexed: 12/13/2022] Open
Abstract
Wound healing treatment in diabetic patients worldwide represents around 2.1 trillion dollars to global health sectors. This is because of the complications presented in the wound healing process of skin ulcers, such as a lack of macrophage and fibroblast growth factors (TGF-β1 and PDGF, respectively) that are both needed for extracellular matrix (ECM) synthesis. Therefore, there is a need for research on new and cost-effective materials to enable ECM synthesis. Such materials include co-electrospun nanofibers used as wound dressings, since they have a similar morphology to the ECM, and therefore, possess the advantage of using different materials to accelerate the wound healing process. Co-electrospun nanofibers have a unique structural configuration, formed by a core and a shell. This configuration allows the protection and gradual liberation of healing agent compounds, which could be included in the core. Some of the materials used in nanofibers are polymers, including natural compounds, such as chitosan (which has been proven to possess antimicrobial and therapeutic activity) and gelatin (for its cell growth, adhesion, and organisational capacity in the wound healing process). Synthetics such as polyvinyl-alcohol (PVA) (mainly as a co-spinning agent to chitosan) can also be used. Another bioactive compound that can be used to enhance the wound healing process is eugenol, a terpenoid present in different medicinal plant tissues that have scarring properties. Therefore, the present review analyses the potential use of co-electrospun nanofibers, with chitosan-PVA-eugenol in the core and gelatin in the shell as a wound dressing for diabetic skin ulcers.
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Affiliation(s)
| | | | | | | | - Jesús F Ayala-Zavala
- Centro de Investigación en Alimentación y Desarrollo 83304 Hermosillo Sonora Mexico
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Affiliation(s)
- Xiang Liu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, and State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wei Yu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, and State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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Liu M, Wang Y, Chen J, Luo J, Fu Q, Zhang J. The retarded recovery of disentangled state by blending HDPE with ultra-high molecular weight polyethylene. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Wang B, Cavallo D, Zhang X, Zhang B, Chen J. Evolution of chain entanglements under large amplitude oscillatory shear flow and its effect on crystallization of isotactic polypropylene. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.121899] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Wang Y, Fu J, Liu M, Fu Q, Zhang J. Understanding the effect of chain entanglement state on melt crystallization of the polymer freeze-extracted from solution: The role of critical overlap concentration. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhao H, Zhang Q, Ali S, Li L, Lv F, Ji Y, Su F, Meng L, Li L. A real-time WAXS and SAXS study of the structural evolution of LLDPE bubble. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/polb.24727] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Haoyuan Zhao
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Qianlei Zhang
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Samard Ali
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Lifu Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Fei Lv
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Youxin Ji
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Fengmei Su
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Lingpu Meng
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
| | - Liangbin Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film; University of Science and Technology of China; Hefei 230026 China
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