1
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Ma F, Gao Y, Xie W, Wu D. Effect of hydrophobic modification of chitin nanocrystals on role as anti-nucleator in the crystallization of poly(ε-caprolactone)/polylactide blend. Int J Biol Macromol 2024; 269:132097. [PMID: 38710249 DOI: 10.1016/j.ijbiomac.2024.132097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/09/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Biodegradable polymer blends filled with rod-like polysaccharide nanocrystals have attracted much attention because each component in this type of ternary composites is biodegradable, and the final properties are more easily tailored comparing to those of binary composites. In this work, chitin nanocrystals (ChNCs) were used as nanofiller for the biodegradable poly(ε-caprolactone) (PCL)/polylactide (PLA) immiscible blend to prepare ternary composites for a crystallization study. The results revealed that the crystallization behavior of PCL/PLA blend matrices strongly depended on the surface properties of ChNCs. Non-modified ChNCs and modified ChNCs played completely different roles during crystallization of the ternary systems: the former was inert filler, while the latter acted as anti-nucleator to the PCL phase. This alteration was resulted from the improved ChNC-PCL affinity after modification of ChNCs, which was due to the 'interfacial dilution effect' and the preferential dispersion of ChNCs. This work presents a unique perspective on the nucleation role of ChNCs in the crystallization of immiscible PCL/PLA blends, and opens up a new application scenario for ChNCs as anti-nucleator.
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Affiliation(s)
- Fen Ma
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Yuxin Gao
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Wenyuan Xie
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China; Institute for Innovative Materials & Energy, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China.
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2
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In-situ reactive compatiblization modified poly(l-lactic acid) and poly (butylene adipate-co-terephthalate) blends with improved toughening and thermal characteristics. Int J Biol Macromol 2023; 231:123419. [PMID: 36709812 DOI: 10.1016/j.ijbiomac.2023.123419] [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: 11/15/2022] [Revised: 01/15/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023]
Abstract
Triglycidyl isocyanurate (TGIC) with multifunctional epoxy is used for reactive compatibilization of Poly (l-lactic acid) (PLLA)/Poly (butylene adipate-co-terephthalate) (PBAT) blends. Interfacial tension, FTIR and SEM results show that TGIC has greater affinity and stronger reactivity with PBAT. The mixing sequence of PLLA/PBAT/TGIC blends has a significant impact on the compatibility. The TGIC and PBAT are reactive blended first, followed by the PLLA, which is most advantageous to produce a substantial amounts of branched copolymers PLLA-g-PBAT at the interface for the (PBAT/4%T) /PLLA blend. The considerable improvement of interfacial compatibility and the thickening of interfacial layer promote the stress transfer from the matrix to the dispersed PBAT phase. In comparison to PLLA/PBAT blend, the breaking elongation of (PBAT/4%T)/PLLA blend is raised by 25.6 times up to 164.2 % and the tensile strength is enhanced up to 32.1 MPa. The present work offers valuable perspectives on how to encourage the efficient application of reactive compatibilizers with epoxy groups in polyester blends.
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3
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Sachan R, Warkar SG, Purwar R. An overview on synthesis, properties and applications of polycaprolactone copolymers, blends & composites. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2022.2113890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Radha Sachan
- Discipline of Polymer Science and Chemical Technology, Department of Applied Chemistry, Delhi Technological University, Delhi, India
| | - Sudhir G. Warkar
- Discipline of Polymer Science and Chemical Technology, Department of Applied Chemistry, Delhi Technological University, Delhi, India
| | - Roli Purwar
- Discipline of Polymer Science and Chemical Technology, Department of Applied Chemistry, Delhi Technological University, Delhi, India
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4
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Meng X, Qi Z, Yu L, Zhang Y. Catalytic System for Poly(lactic acid) Synthesis: Opportunities and Challenges. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202206051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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5
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Castillo-Santillan M, Torres-Lubian JR, Martínez-Richa A, Huerta-Marcial ST, Gutierrez MC, Loos K, Peréz-García MG, Mota-Morales JD. From polymer blends to a block copolymer: Ring-opening polymerization of L-lactide/ε-caprolactone eutectic system. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Oztemur J, Ozdemir S, Yalcin-Enis I. Effect of blending ratio on morphological, chemical, and thermal characteristics of PLA/PCL and PLLA/PCL electrospun fibrous webs. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2090356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Janset Oztemur
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Suzan Ozdemir
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Ipek Yalcin-Enis
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
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7
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Cui X, Meng X, Chen Y, Liu Y, Yu L. Preparation of L-Lactide with High Optical Purity via the Zinc-Doped Polypyrrole-Catalyzed Lactic Acid Condensation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202204045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Meng X, Yu L, Cao Y, Zhang X, Zhang Y. Progresses in synthetic technology development for the production of L-lactide. Org Biomol Chem 2021; 19:10288-10295. [PMID: 34788779 DOI: 10.1039/d1ob01918j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
L-Lactide is an intermediate for the industrial production of polylactic acid (PLA). The chemical and optical purities of lactide determine the quality of the prepared PLA. It is of great challenge to synthesize L-lactide efficiently with high chemical and optical purities under the conditions applicable for industrial production. With the national plastic reduction order issued, developing biodegradable materials such as PLA has gradually become a hot topic, and the production of upstream lactide is the key technique for the whole industrial chain. This mini-review aims to summarize typical works on the related synthetic technology development in recent years.
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Affiliation(s)
- Xiangkun Meng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Lei Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Yitao Cao
- Royal Holloway, University of London, Egham, Surrey, TW20 0QR, UK
| | - Xu Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Yiyang Zhang
- Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan.
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9
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A bimetallic load-bearing bioceramics of TiO 2 @ ZrO 2 integrated polycaprolactone fibrous tissue construct exhibits anti bactericidal effect and induces osteogenesis in MC3T3-E1 cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112501. [PMID: 34857287 DOI: 10.1016/j.msec.2021.112501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/05/2021] [Accepted: 10/15/2021] [Indexed: 02/07/2023]
Abstract
Bioactive mesoporous binary metal oxide nanoparticles allied with polymeric scaffolds can mimic natural extracellular matrix because of their self-mineralized functional matrix. Herein, we developed fibrous scaffolds of polycaprolactone (PCL) integrating well-dispersed TiO2@ZrO2 nanoparticles (NPs) via electrospinning for a tissue engineering approach. The scaffold with 0.1 wt% of bioceramic (TiO2@ZrO2) shows synergistic effects on physicochemical and bioactivity suited to stem cell attachment/proliferation. The bioceramics-based scaffold shows excellent antibacterial activity that can prevent implant-associated infections. In addition, the TiO2@ZrO2 in scaffold serves as a stem cell microenvironment to accelerate cell-to-cell interactions, including cell growth, morphology/orientation, differentiation, and regeneration. The NPs in PCL exert superior biocompatibility on MC3T3-E1 cells inducing osteogenic differentiation. The ALP activity and ARS staining confirm the upregulation of bone-related proteins and minerals suggesting the scaffolds exhibit osteoinductive abilities and contribute to bone cell regeneration. Based on this result, the bimetallic oxide could become a novel bone ceramic tailor TiO2@ZrO2 composite tissue-construct and keep potential nanomaterials-based scaffold for bone tissue engineering strategy.
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10
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Sened N, Djahnit L, El-Miloudi K, Lopez-Manchado MA. Structural and Thermal Properties of Polycaprolactone/PEG-Coated Zinc Oxide Nanocomposites. POLYMER SCIENCE SERIES A 2021. [DOI: 10.1134/s0965545x21060110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Li L, Areson C, van der Straten A, Johnson LM. Effects of Polymer Blending on the Performance of a Subcutaneous Biodegradable Implant for HIV Pre-Exposure Prophylaxis (PrEP). Int J Mol Sci 2021; 22:ijms22126529. [PMID: 34207212 PMCID: PMC8235439 DOI: 10.3390/ijms22126529] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/04/2021] [Accepted: 06/13/2021] [Indexed: 12/16/2022] Open
Abstract
Long-acting (LA) HIV pre-exposure prophylaxis (PrEP) can mitigate challenges of adhering to daily or on-demand regimens of antiretrovirals (ARVs). We are developing a subcutaneous implant comprising polycaprolactone (PCL) for sustained delivery of ARVs for PrEP. Here we use tenofovir alafenamide (TAF) as a model drug. Previously, we demonstrated that the release rates of drugs are controlled by the implant surface area and wall thickness, and the molecular weight (MW) of PCL. Here, we further advance the implant design and tailor the release rates of TAF and the mechanical integrity of the implant through unique polymer blend formulations. In vitro release of TAF from the implant exhibited zero-order release kinetics for ~120 days. TAF release rates were readily controlled via the MW of the polymer blend, with PCL formulations of higher MW releasing the drug faster than implants with lower MW PCL. Use of polymer MW to tune drug release rates is partly explained by PCL crystallinity, as higher PCL crystalline material is often associated with a slower release rate. Moreover, results showed the ability to tailor mechanical properties via PCL blends. Blending PCL offers an effective approach for tuning the ARV release rates, implant duration, and integrity, and ultimately the biodegradation profiles of the implant.
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Affiliation(s)
- Linying Li
- Engineered Systems RTI International, Durham, NC 27709, USA; (L.L.); (C.A.)
| | - Christine Areson
- Engineered Systems RTI International, Durham, NC 27709, USA; (L.L.); (C.A.)
| | - Ariane van der Straten
- Center for AIDS Prevention Studies, Department of Medicine, University of California San Francisco, San Francisco, CA 94104, USA;
- ASTRA Consulting, Kensington, CA 94708, USA
| | - Leah M. Johnson
- Engineered Systems RTI International, Durham, NC 27709, USA; (L.L.); (C.A.)
- Correspondence: ; Tel.: +1-919-541-7233
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12
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Oztemur J, Yalcin-Enis I. Development of biodegradable webs of PLA/PCL blends prepared via electrospinning: Morphological, chemical, and thermal characterization. J Biomed Mater Res B Appl Biomater 2021; 109:1844-1856. [PMID: 33847451 DOI: 10.1002/jbm.b.34846] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/23/2021] [Accepted: 03/31/2021] [Indexed: 01/02/2023]
Abstract
Biodegradable polymers have a mean role to mimic native tissues and allow cells to penetrate, grow, and proliferate with their advanced features in tissue engineering applications. The physiological, chemical, mechanical, and biological qualities of the surfaces, which are presented from biodegradable polymers, affect the final properties of the scaffolds. In this study, it is aimed to produce fibrous webs by electrospinning method for tissue engineering applications using two different biopolymers, polylactic acid (PLA) and polycaprolactone (PCL). These polymers are used either alone or in a blended form (PLA/PCL, 1/1 wt.). Within the scope of the study, polymer concentrations (6, 8 and 10%) and solvent types (used for chloroform/ethanol/acetic acid mixture, PCL and PLA/PCL mixtures, and chloroform/acetone, PLA) vary as solution parameters. Fibrous webs are investigated in terms of morphological, chemical, and thermal characteristics. Results show continuous fibers are examined for 8 or 10% polymer concentrations with an average fiber diameter of 1.3-2.7 μm and pore area of 4-9 μm2 . No fiber formation is observed in sample groups with a polymer concentration of 6% and beaded structures are formed. Water contact angle analysis proves the hydrophobic properties of PLA and PCL, whereas Fourier-transform infrared results show there is no solution residue on the surfaces, so there is no toxic effect. Also, in differential scanning calorimetry analysis, the characteristic crystallization peaks of the polymers are recognized, and when the polymers are in a blend, it beholds that they have effects on each other's crystallization.
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Affiliation(s)
- Janset Oztemur
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Ipek Yalcin-Enis
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
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13
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Confined crystallization of Poly(ethylene glycol) in spherulites of Poly(L-lactic acid) in a PLLA/PEG blend. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123370] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Nucleation modalities in poly(lactide), poly(butylene succinate), and poly(ε‐caprolactone) ternary blends with partial wetting morphology. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Radhakrishnan S, Nagarajan S, Belaid H, Farha C, Iatsunskyi I, Coy E, Soussan L, Huon V, Bares J, Belkacemi K, Teyssier C, Balme S, Miele P, Cornu D, Kalkura N, Cavaillès V, Bechelany M. Fabrication of 3D printed antimicrobial polycaprolactone scaffolds for tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111525. [PMID: 33255078 DOI: 10.1016/j.msec.2020.111525] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/25/2020] [Accepted: 09/12/2020] [Indexed: 01/11/2023]
Abstract
Synthetic polymers are widely employed for bone tissue engineering due to their tunable physical properties and biocompatibility. Inherently, most of these polymers display poor antimicrobial properties. Infection at the site of implantation is a major cause for failure or delay in bone healing process and the development of antimicrobial polymers is highly desired. In this study, silver nanoparticles (AgNps) were synthesized in polycaprolactone (PCL) solution by in-situ reduction and further extruded into PCL/AgNps filaments. Customized 3D structures were fabricated using the PCL/AgNps filaments through 3D printing technique. As demonstrated by scanning electron microscopy, the 3D printed scaffolds exhibited interconnected porous structures. Furthermore, X-ray photoelectron spectroscopy analysis revealed the reduction of silver ions. Transmission electron microscopy along with energy-dispersive X-ray spectroscopy analysis confirmed the formation of silver nanoparticles throughout the PCL matrix. In vitro enzymatic degradation studies showed that the PCL/AgNps scaffolds displayed 80% degradation in 20 days. The scaffolds were cytocompatible, as assessed using hFOB cells and their antibacterial activity was demonstrated on Escherichia coli. Due to their interconnected porous structure, mechanical and antibacterial properties, these cytocompatible multifunctional 3D printed PCL/AgNps scaffolds appear highly suitable for bone tissue engineering.
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Affiliation(s)
- Socrates Radhakrishnan
- Crystal Growth Centre, Anna University, Chennai 600025, India; Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Sakthivel Nagarajan
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Habib Belaid
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France; IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université Montpellier, Montpellier F-34298, France
| | - Cynthia Farha
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Igor Iatsunskyi
- NanoBioMedical Centre, Adam Mickiewicz University, 3 Wszechnicy Piastowskiej str., 61-614 Poznan, Poland
| | - Emerson Coy
- NanoBioMedical Centre, Adam Mickiewicz University, 3 Wszechnicy Piastowskiej str., 61-614 Poznan, Poland
| | - Laurence Soussan
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Vincent Huon
- LMGC, Laboratoire de Mécanique et Génie Civil, Université Montpellier, CNRS, Montpellier, France
| | - Jonathan Bares
- LMGC, Laboratoire de Mécanique et Génie Civil, Université Montpellier, CNRS, Montpellier, France
| | - Kawthar Belkacemi
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université Montpellier, Montpellier F-34298, France
| | - Catherine Teyssier
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université Montpellier, Montpellier F-34298, France
| | - Sébastien Balme
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Philippe Miele
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France; Institut Universitaire de France (IUF), 1 rue Descartes, Paris F-73231, France
| | - David Cornu
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Vincent Cavaillès
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université Montpellier, Montpellier F-34298, France
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
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16
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Fenni SE, Wang J, Haddaoui N, Favis BD, Müller AJ, Cavallo D. Nucleation of Poly(lactide) Partially Wet Droplets in Ternary Blends with Poly(butylene succinate) and Poly(ε-caprolactone). Macromolecules 2020; 53:1726-1735. [PMID: 33814614 PMCID: PMC8016171 DOI: 10.1021/acs.macromol.9b02295] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/28/2019] [Indexed: 02/01/2023]
Abstract
This work presents the first investigation on the crystallization behavior of partially wet droplets in immiscible ternary blends. Poly(lactide), poly(ε-caprolactone), and poly(butylene succinate) (PLA, PCL, and PBS, respectively) were melt blended in a 10/45/45 weight ratio to produce a "partial wetting" morphology with droplets of the PLA minor phase located at the interface between the other two major components. The crystallization process of the higher melting PLA droplets was studied by polarized light optical microscopy, while the other components remain in the molten state. We found that neighboring partially wet droplets nucleate in close sequence. This is unexpected since partially wet droplets display points of three-phase contact and, hence, should not touch each other. Moreover, the onset of poly(lactide) crystallization is frequently observed at the interface with molten PCL or PBS, with a significant preference for the former polymer. The observed sequential droplet-to-droplet crystallization is attributed to the weak partial wetting behavior of the PCL/PLA/PBS ternary system. In fact, the contact between the interfacially confined droplets during crystallization due to their mobility can lead to a transition from a partial to a completely wet state, with the formation of thin continuous layers bridging larger partially wet droplets. This allows crystallization to spread sequentially between neighboring domains. Using a simple heterogeneous nucleation model, it is shown that the nucleation of PLA on either PCL or PBS melts is energetically feasible. This study establishes a clear relationship between the unique partial wetting morphology of ternary blends and the nucleation of the minor component, paving the way to the understanding and control of crystallization in multiphasic polymer blends for advanced applications.
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Affiliation(s)
- Seif Eddine Fenni
- Department
of Chemistry and Industrial Chemistry, University
of Genova, via Dodecaneso, 31, 16146 Genova, Italy
- Laboratory
of Physical-Chemistry of High Polymers (LPCHP), Faculty of Technology, University of Ferhat ABBAS Sétif-1, 19000 Sétif, Algeria
| | - Jun Wang
- CREPEC,
Department of Chemical Engineering, École
Polytechnique de Montréal, Montréal, Québec H3C3A7, Canada
| | - Nacerddine Haddaoui
- Laboratory
of Physical-Chemistry of High Polymers (LPCHP), Faculty of Technology, University of Ferhat ABBAS Sétif-1, 19000 Sétif, Algeria
| | - Basil D. Favis
- CREPEC,
Department of Chemical Engineering, École
Polytechnique de Montréal, Montréal, Québec H3C3A7, Canada
| | - Alejandro J. Müller
- POLYMAT
and Polymer Science and Technology Department, 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, 48013 Bilbao, Spain
| | - Dario Cavallo
- Department
of Chemistry and Industrial Chemistry, University
of Genova, via Dodecaneso, 31, 16146 Genova, Italy
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17
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Awasthi GP, Maharjan B, Shrestha S, Bhattarai DP, Yoon D, Park CH, Kim CS. Synthesis, characterizations, and biocompatibility evaluation of polycaprolactone–MXene electrospun fibers. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124282] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Johnson LM, Krovi SA, Li L, Girouard N, Demkovich ZR, Myers D, Creelman B, van der Straten A. Characterization of a Reservoir-Style Implant for Sustained Release of Tenofovir Alafenamide (TAF) for HIV Pre-Exposure Prophylaxis (PrEP). Pharmaceutics 2019; 11:pharmaceutics11070315. [PMID: 31277461 PMCID: PMC6680758 DOI: 10.3390/pharmaceutics11070315] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/21/2019] [Accepted: 06/29/2019] [Indexed: 11/29/2022] Open
Abstract
Long-acting (LA) HIV pre-exposure prophylaxis (PrEP) offers the potential to improve adherence by lowering the burden of daily or on-demand regimens of antiretroviral (ARV) drugs. This paper details the fabrication and in vitro performance of a subcutaneous and trocar-compatible implant for the LA delivery of tenofovir alafenamide (TAF). The reservoir-style implant comprises an extruded tube of a biodegradable polymer, poly(ε-caprolactone) (PCL), filled with a formulation of TAF and castor oil excipient. Parameters that affect the daily release rates of TAF are described, including the surface area of the implant, the thickness of the PCL tube walls (between 45 and 200 µm), and the properties of the PCL (e.g., crystallinity). In vitro studies show a linear relationship between daily release rates and surface area, demonstrating a membrane-controlled release mechanism from extruded PCL tubes. Release rates of TAF from the implant are inversely proportional to the wall thickness, with release rates between approximately 0.91 and 0.15 mg/day for 45 and 200 µm, respectively. The sustained release of TAF at 0.28 ± 0.06 mg/day over the course of 180 days in vitro was achieved. Progress in the development of this implant platform addresses the need for new biomedical approaches to the LA delivery of ARV drugs.
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Affiliation(s)
- Leah M Johnson
- Engineered Systems, RTI International, 3040 E. Cornwallis Road, Research Triangle Park, NC 27709, USA.
| | - Sai Archana Krovi
- Engineered Systems, RTI International, 3040 E. Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Linying Li
- Engineered Systems, RTI International, 3040 E. Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Natalie Girouard
- Engineered Systems, RTI International, 3040 E. Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Zach R Demkovich
- Women's Global Health Imperative, RTI International, 351 California Street, Suite 500, San Francisco, CA 94104, USA
| | - Daniel Myers
- PATH, 2201 Westlake Ave, Suite 200, Seattle, WA 98121, USA
| | - Ben Creelman
- PATH, 2201 Westlake Ave, Suite 200, Seattle, WA 98121, USA
| | - Ariane van der Straten
- Women's Global Health Imperative, RTI International, 351 California Street, Suite 500, San Francisco, CA 94104, USA
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19
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Zhao N, Lv Z, Ma J, Zhu C, Li Q. Fabrication of hydrophilic small diameter vascular foam scaffolds of poly(ε-caprolactone)/polylactic blend by sodium hydroxide solution. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Lv Z, Zhao N, Wu Z, Zhu C, Li Q. Fabrication of Novel Open-Cell Foams of Poly(ε-caprolactone)/Poly(lactic acid) Blends for Tissue-Engineering Scaffolds. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02233] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zirui Lv
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Na Zhao
- School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Zeming Wu
- School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Changwei Zhu
- Sirade Technologies,
Inc., Toronto L4E 0S7, Canada
| | - Qian Li
- School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
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21
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Dorneles MF, Oréfice RL. Aluminosilicate nanofibers with ordered pores derived from block copolymer electrospun nanofibers. J Appl Polym Sci 2018. [DOI: 10.1002/app.46868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M. F. Dorneles
- School of Engineering; Federal University of Minas Gerais (UFMG); Av. Antônio Carlos, 6627 - Pampulha, Belo Horizonte Minas Gerais 31270-901 Brazil
| | - R. L. Oréfice
- School of Engineering; Federal University of Minas Gerais (UFMG); Av. Antônio Carlos, 6627 - Pampulha, Belo Horizonte Minas Gerais 31270-901 Brazil
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22
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Rogina A, Antunović M, Milovac D. Biomimetic design of bone substitutes based on cuttlefish bone‐derived hydroxyapatite and biodegradable polymers. J Biomed Mater Res B Appl Biomater 2018; 107:197-204. [DOI: 10.1002/jbm.b.34111] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/21/2018] [Accepted: 02/28/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Anamarija Rogina
- Department of Physical ChemistryFaculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, p.p.177, 10001 Zagreb Croatia
| | - Maja Antunović
- Department of Molecular BiologyFaculty of Science, University of Zagreb, Horvatovac102a10001Zagreb Croatia
| | - Dajana Milovac
- Department of Inorganic Chemical Technology and Non‐MetalsFaculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, p.p.17710001Zagreb Croatia
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23
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Preparation and characterization of poly(ethylene carbonate)/poly(lactic acid) blends. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1451-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Wang P, Xu P, Wei H, Fang H, Ding Y. Effect of block copolymer containing ionic liquid moiety on interfacial polarization in PLA/PCL blends. J Appl Polym Sci 2018. [DOI: 10.1002/app.46161] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ping Wang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Pei Xu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Haibing Wei
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Huagao Fang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Yunsheng Ding
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
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25
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Huang J, Xu C, Wu D, Lv Q. Transcrystallization of polypropylene in the presence of polyester/cellulose nanocrystal composite fibers. Carbohydr Polym 2017; 167:105-114. [DOI: 10.1016/j.carbpol.2017.03.046] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/13/2017] [Accepted: 03/13/2017] [Indexed: 11/26/2022]
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26
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Lv Q, Ying Z, Wu D, Wang Z, Zhang M. Nucleation Role of Basalt Fibers during Crystallization of Poly(ε-caprolactone) Composites. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04510] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiaolian Lv
- School of Chemistry & Chemical Engineering, ‡Provincial Key Laboratories of Environmental Engineering & Materials, and §Testing Center, Yangzhou University, Jiangsu 225002, China
| | - Zeren Ying
- School of Chemistry & Chemical Engineering, ‡Provincial Key Laboratories of Environmental Engineering & Materials, and §Testing Center, Yangzhou University, Jiangsu 225002, China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, ‡Provincial Key Laboratories of Environmental Engineering & Materials, and §Testing Center, Yangzhou University, Jiangsu 225002, China
| | - Zhifeng Wang
- School of Chemistry & Chemical Engineering, ‡Provincial Key Laboratories of Environmental Engineering & Materials, and §Testing Center, Yangzhou University, Jiangsu 225002, China
| | - Ming Zhang
- School of Chemistry & Chemical Engineering, ‡Provincial Key Laboratories of Environmental Engineering & Materials, and §Testing Center, Yangzhou University, Jiangsu 225002, China
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27
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Sangeetha VH, Valapa RB, Nayak SK, Varghese TO. Super toughened renewable poly(lactic acid) based ternary blends system: effect of degree of hydrolysis of ethylene vinyl acetate on impact and thermal properties. RSC Adv 2016. [DOI: 10.1039/c6ra13366e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effect of hydrolysed EVA on PLA ternary blend systems.
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Affiliation(s)
- V. H. Sangeetha
- Centre for Biopolymer Science and Technology (CBPST)
- Kochi
- India
| | | | - S. K. Nayak
- Central Institute of Plastics Engineering and Technology (CIPET)
- Chennai-600032
- India
| | - T. O. Varghese
- Centre for Biopolymer Science and Technology (CBPST)
- Kochi
- India
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