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Darroch C, Digeronimo F, Asaro G, Minsart M, Pien N, van Vlierberghe S, Monaghan MG. Melt electrowriting of poly( ϵ-caprolactone)-poly(ethylene glycol) backbone polymer blend scaffolds with improved hydrophilicity and functionality. Biomed Mater 2024; 19:055011. [PMID: 38914083 DOI: 10.1088/1748-605x/ad5b41] [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: 01/08/2024] [Accepted: 06/24/2024] [Indexed: 06/26/2024]
Abstract
Melt electrowriting (MEW) is an additive manufacturing technique that harnesses electro-hydrodynamic phenomena to produce 3D-printed fibres with diameters on the scale of 10s of microns. The ability to print at this small scale provides opportunities to create structures with incredibly fine resolution and highly defined morphology. The current gold standard material for MEW is poly(ϵ-caprolactone) (PCL), a polymer with excellent biocompatibility but lacking in chemical groups that can allow intrinsic additional functionality. To provide this functionality while maintaining PCL's positive attributes, blending was performed with a Poly(Ethylene Glycol) (PEG)-based Acrylate endcapped Urethane-based Precursor (AUP). AUPs are a group of polymers, built on a backbone of existing polymers, which introduce additional functionality by the addition of one or more acrylate groups that terminate the polymer chain of a backbone polymer. By blending with a 20kDa AUP-PEG in small amounts, it is shown that MEW attributes are preserved, producing high-quality meshes. Blends were produced in various PCL:AUP weight ratios (100:0, 90:10 and 0:100) and processed into both solvent-cast films and MEW meshes that were used to characterise the properties of the blends. It was found that the addition of AUP-PEG to PCL significantly increases the hydrophilicity of structures produced with these polymers, and adds swelling capability compared to the non-swelling PCL. The developed blend (90:10) is shown to be processable using MEW, and the quality of manufactured scaffolds is evaluated against pure PCL scaffolds by performing scanning electron microscopy image analysis, with the quality of the novel MEW blend scaffolds showing comparable quality to that of pure PCL. The presence of the functionalisable AUP material on the surface of the developed scaffolds is also confirmed using fluorescence labelling of the acrylate groups. Biocompatibility of the MEW-processable blend was confirmed through a cell viability study, which found a high degree of cytocompatibility.
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Affiliation(s)
- Conor Darroch
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland
| | - Francesco Digeronimo
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland
| | - Giuseppe Asaro
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland
- Advanced Materials and BioEngineering Research (AMBER) Centre at Trinity College Dublin and the Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Manon Minsart
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry (CMaC), Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
| | - Nele Pien
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry (CMaC), Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
- Faculty of Veterinary Medicine, Department of Translational Physiology, Infectiology and Public Health, Ghent University, Salisburylaan 133, 9280 Merelbeke, Belgium
| | - Sandra van Vlierberghe
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry (CMaC), Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
| | - Michael G Monaghan
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland
- Advanced Materials and BioEngineering Research (AMBER) Centre at Trinity College Dublin and the Royal College of Surgeons in Ireland, Dublin 2, Ireland
- CÚRAM, Centre for Research in Medical Devices, National University of Ireland, Galway, Newcastle Road, H91 W2TY Galway, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, Ireland
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2
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Zhang B, Liu S, Yin L, Tian M, Ning N, Zhang L, Wang W. Nanoscale analysis of the interface of dip layer/rubber in fiber/rubber composites. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125472] [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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3
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Inverardi N, Toselli M, Scalet G, Messori M, Auricchio F, Pandini S. Stress-Free Two-Way Shape Memory Effect of Poly(ethylene glycol)/Poly(ε-caprolactone) Semicrystalline Networks. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicoletta Inverardi
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25133 Brescia, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Via Giuseppe Giusti 9, 50121 Firenze, Italy
| | - Maurizio Toselli
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Via Giuseppe Giusti 9, 50121 Firenze, Italy
| | - Giulia Scalet
- Department of Civil Engineering and Architecture, University of Pavia, via Ferrata 3, 27100 Pavia, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Via Giuseppe Giusti 9, 50121 Firenze, Italy
| | - Massimo Messori
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Via Giuseppe Giusti 9, 50121 Firenze, Italy
| | - Ferdinando Auricchio
- Department of Civil Engineering and Architecture, University of Pavia, via Ferrata 3, 27100 Pavia, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Via Giuseppe Giusti 9, 50121 Firenze, Italy
| | - Stefano Pandini
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25133 Brescia, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Via Giuseppe Giusti 9, 50121 Firenze, Italy
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4
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Hu J, Dong T, Bu H, Sun T, Zhang J, Xu C, Yun X. Construction of gas permeable channel in poly(l-lactic acid) membrane and its control of the micro atmosphere in okra packaging. Int J Biol Macromol 2022; 219:519-529. [DOI: 10.1016/j.ijbiomac.2022.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 11/05/2022]
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5
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Berger V, Luo Z, Leroux JC. 3D printing of a controlled fluoride delivery device for the prevention and treatment of tooth decay. J Control Release 2022; 348:870-880. [PMID: 35752251 DOI: 10.1016/j.jconrel.2022.06.032] [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: 11/03/2021] [Revised: 05/05/2022] [Accepted: 06/18/2022] [Indexed: 10/17/2022]
Abstract
Dental decay is a highly prevalent chronic disease affecting people from all ages. Clinically, fluoride supplementation is the primary strategy in the prevention of dental decay. However, the current existing self-application formulations such as gels or mouthwashes are rapidly cleared after administration, resulting in modest efficacy even after repeated applications. Therefore, a user-friendly formulation that can provide sustained fluoride release in the oral cavity is of great interest for dental decay prevention. Herein, we report the utilization of fused deposition modelling to fabricate personalised mouthguards, which allow local and prolonged fluoride elution. Composite filaments comprising sodium fluoride and polymers with tuneable hydrophobicity were produced using blends of poly(ε-caprolactone) (PCL) and poly(vinyl alcohol) or poly(ethylene glycol) (PEG). The materials exhibited suitable mechanical properties for dental devices as well as different release kinetics depending on their composition. Ex vivo studies were performed on decayed human teeth using the 3D printed tooth caps that precisely fit the complex geometries of each specimen. A significant elevation of fluoride content in the lesion mineral in contact with the PCL/PEG tooth caps was achieved compared to the ones in contact with solutions mimicking dental care products. In conclusion, this study suggested that a sustained localized drug release of fluoride from personalised 3D printed mouthguards at the device-enamel interface can improve the incorporation of fluoride in the tooth matrix and prevent lesion progression.
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Affiliation(s)
- Valentine Berger
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Zhi Luo
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland.
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6
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Li B, Zhao Y, Chen X, Wang Z, Xu J, Shi W. Polymer Crystallization with Configurable Birefringence in Double Emulsion Droplets. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Baihui Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yue Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaotong Chen
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhiqi Wang
- Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China
| | - Jun Xu
- Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China
| | - Weichao Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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7
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Ren J, Murray R, Wong CS, Qin J, Chen M, Totsika M, Riddell AD, Warwick A, Rukin N, Woodruff MA. Development of 3D Printed Biodegradable Mesh with Antimicrobial Properties for Pelvic Organ Prolapse. Polymers (Basel) 2022; 14:polym14040763. [PMID: 35215676 PMCID: PMC8877663 DOI: 10.3390/polym14040763] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/31/2022] [Accepted: 02/03/2022] [Indexed: 01/10/2023] Open
Abstract
To address the increasing demand for safe and effective treatment options for pelvic organ prolapse (POP) due to the worldwide ban of the traditional polypropylene meshes, this study introduced degradable polycaprolactone (PCL)/polyethylene glycol (PEG) composite meshes fabricated with melt-electrowriting (MEW). Two PCL/PEG mesh groups: 90:10 and 75:25 (PCL:PEG, wt%) were fabricated and characterized for their degradation rate and mechanical properties, with PCL meshes used as a control. The PCL/PEG composites showed controllable degradation rates by adjusting the PEG content and produced mechanical properties, such as maximal forces, that were higher than PCL alone. The antibacterial properties of the meshes were elicited by coating them with a commonly used antibiotic: azithromycin. Two dosage levels were used for the coating: 0.5 mg and 1 mg per mesh, and both dosage levels were found to be effective in suppressing the growth of S. aureus bacteria. The biocompatibility of the meshes was assessed using human immortalized adipose derived mesenchymal stem cells (hMSC). In vitro assays were used to assess the cell viability (LIVE/DEAD assay), cell metabolic activity (alamarBlue assay) and cell morphology on the meshes (fluorescent and electron microscopy). The cell attachment was found to decrease with increased PEG content. The freshly drug-coated meshes showed signs of cytotoxicity during the cell study process. However, when pre-released for 14 days in phosphate buffered saline, the initial delay in cell attachment on the drug-coated mesh groups showed full recovery at the 14-day cell culture time point. These results indicated that the PCL/PEG meshes with antibiotics coating will be an effective anti-infectious device when first implanted into the patients, and, after about 2 weeks of drug release, the mesh will be supporting cell attachment and proliferation. These meshes demonstrated a potential effective treatment option for POP that may circumvent the issues related to the traditional polypropylene meshes.
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Affiliation(s)
- Jiongyu Ren
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (J.R.); (M.C.)
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
| | - Rebecca Murray
- Herston Biofabrication Institute, Metro North Health, Brisbane, QLD 4029, Australia; (R.M.); (N.R.)
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- Redcliffe Hospital, Metro North Health, Redcliffe, QLD 4020, Australia; (A.D.R.); (A.W.)
| | - Cynthia S. Wong
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent’s Hospital, Melbourne, VIC 3065, Australia;
| | - Jilong Qin
- Centre for Immunology and Infection Control, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia; (J.Q.); (M.T.)
| | - Michael Chen
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (J.R.); (M.C.)
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Herston Biofabrication Institute, Metro North Health, Brisbane, QLD 4029, Australia; (R.M.); (N.R.)
| | - Makrina Totsika
- Centre for Immunology and Infection Control, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia; (J.Q.); (M.T.)
| | - Andrew D. Riddell
- Redcliffe Hospital, Metro North Health, Redcliffe, QLD 4020, Australia; (A.D.R.); (A.W.)
- Northside Clinical Unit, School of Clinical Medicine, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Andrea Warwick
- Redcliffe Hospital, Metro North Health, Redcliffe, QLD 4020, Australia; (A.D.R.); (A.W.)
| | - Nicholas Rukin
- Herston Biofabrication Institute, Metro North Health, Brisbane, QLD 4029, Australia; (R.M.); (N.R.)
- Redcliffe Hospital, Metro North Health, Redcliffe, QLD 4020, Australia; (A.D.R.); (A.W.)
| | - Maria A. Woodruff
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (J.R.); (M.C.)
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Correspondence:
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8
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Goh CF, Lane ME. Advanced structural characterisation of pharmaceuticals using nano-thermal analysis (nano-TA). Adv Drug Deliv Rev 2022; 180:114077. [PMID: 34896130 DOI: 10.1016/j.addr.2021.114077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 11/12/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022]
Abstract
The production of drug delivery systems fabricated at the nano scale comes with the challenges of identifying reliable characterisation tools, especially for solid dosage forms. A full understanding of physicochemical properties of solid-state systems at a high spatial resolution is essential to monitor their manufacturability, processability, performance (dissolution) and stability. Nano-thermal analysis (nano-TA), a hybrid of atomic force microscopy (AFM) and thermal analysis, has emerged as a solution to address the need for complete characterisation of samples with surface heterogeneity. Nano-TA provides not only physical information using conventional AFM but also the thermal behaviour of these systems as an additional chemical dimension. In this review, the principles and techniques of nano-TA are discussed with emphasis on recent pharmaceutical applications. Building on nano-TA, the combination of this approach with infrared spectroscopic analysis is briefly introduced. The challenges and considerations for future development of nano-TA characterisation are also outlined.
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Affiliation(s)
- Choon Fu Goh
- Discipline of Pharmaceutical Technology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
| | - Majella E Lane
- Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom.
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9
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Guennec A, Brelle L, Balnois E, Linossier I, Renard E, Langlois V, Faÿ F, Chen GQ, Simon-Colin C, Vallée-Réhel K. Antifouling properties of amphiphilic poly(3-hydroxyalkanoate): an environmentally-friendly coating. BIOFOULING 2021; 37:894-910. [PMID: 34579623 DOI: 10.1080/08927014.2021.1981298] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/06/2021] [Accepted: 09/11/2021] [Indexed: 06/13/2023]
Abstract
The development of biofouling is a major problem for marine industries. The conception of antifouling and fouling release coatings, with controlled physical-chemical properties is a promising strategy. Among them, amphiphilic systems, such as those composed of a hydrophobic polydimethylsiloxane matrix and a hydrophilic polyethyleneglycol additive are the most efficient and up to date. Despite their effectiveness, these systems are questioned due to the petrochemical origin of PDMS. The aim of this project was to substitute the PDMS matrix with a biopolymer, poly(3-hydroxybuyrate-co-3-hydroxyvalerate) and to improve its anti-adhesion properties through the elaboration of an amphiphilic system, via the addition of PEG or PHBHHx-b-PEG copolymer. The results, including the physico-chemical properties of PHBHV based coatings and static adhesion tests on a marine bacterium, Bacillus 4J6 and a diatom, Phaeodactylum tricornutum are compared with those of PDMS and PEG-modified PDMS coatings. Real antiadhesion activity was obtained for the PHBHV/PHBHHx-b-PEG system for a promising eco-friendly strategy.
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Affiliation(s)
- A Guennec
- Laboratoire de Biotechnologie et de Chimie Marines, EA 3884, Université Bretagne Sud, Lorient Cedex, France
| | - L Brelle
- CNRS, ICMPE, UMR 7182, Université Paris Est Créteil, Thiais, France
| | - E Balnois
- Laboratoire de Biotechnologie et de Chimie Marines, EA 3884, Université de Brest, Quimper, France
| | - I Linossier
- Laboratoire de Biotechnologie et de Chimie Marines, EA 3884, Université Bretagne Sud, Lorient Cedex, France
| | - E Renard
- CNRS, ICMPE, UMR 7182, Université Paris Est Créteil, Thiais, France
| | - V Langlois
- CNRS, ICMPE, UMR 7182, Université Paris Est Créteil, Thiais, France
| | - F Faÿ
- Laboratoire de Biotechnologie et de Chimie Marines, EA 3884, Université Bretagne Sud, Lorient Cedex, France
| | - G Q Chen
- Center of Synthetic and Systems Biology, School of Life Science, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing, China
| | - C Simon-Colin
- LM2E, CNRS, IFREMER, Université de Brest, Plouzané, France
| | - K Vallée-Réhel
- Laboratoire de Biotechnologie et de Chimie Marines, EA 3884, Université Bretagne Sud, Lorient Cedex, France
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10
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Peñas MI, Ocando C, Penott-Chang E, Safari M, Ezquerra TA, Rebollar E, Nogales A, Hernández R, Müller AJ. Nanostructural organization of thin films prepared by sequential dip-coating deposition of poly(butylene succinate), poly(ε-caprolactone) and their copolyesters (PBS-ran-PCL). POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Arbade GK, Dongardive V, Rath SK, Tripathi V, Patro TU. Effect of poly(ethylene glycol) on drug delivery, antibacterial, biocompatible, physico-chemical and thermo-mechanical properties of PCL-chloramphenicol electrospun nanofiber scaffolds. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1817020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Gajanan Kashinathrao Arbade
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Pune- 411025, Maharashtra, India
| | - Vikas Dongardive
- National Centre for Cell Science, Pune- 411007, Maharashtra, India
| | - Sangram K. Rath
- Department of Polymer Science and Technology Directorate, Naval Materials Research Laboratory, Ambernath- 421506, Maharashtra, India
| | - Vidisha Tripathi
- National Centre for Cell Science, Pune- 411007, Maharashtra, India
| | - T. Umasankar Patro
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Pune- 411025, Maharashtra, India
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12
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Nguyen-Tri P, Carrière P, Duong A, Nanda S. Graphene Oxide-Induced Interfacial Transcrystallization of Single-Fiber Milkweed/Polycaprolactone/Polyvinylchloride Composites. ACS OMEGA 2020; 5:22430-22439. [PMID: 32923801 PMCID: PMC7482230 DOI: 10.1021/acsomega.0c02913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Understanding the interfacial crystallization is crucial for semi-crystalline polymer/natural fiber composites because it links to the final properties. This work reports, for the first time, the interfacial crystallization of a miscible blend between polycaprolactone (PCL) and polyvinylchloride (PVC) with milkweed fibers. We have first described the morphology of the fibers and the chemical composition of waxes covered on its surface. Our findings show that the transcrystallization (TC) layer of PCL/PVC could appear at the interface by simply coating with a layer of graphene oxide (GO) on the milkweed fiber. In our study, atomic force microscopy-infrared spectroscopy analysis shows that the crystallinity of the blends is higher at the vicinity of the interface compared to that in the bulk. The kinetic of the interfacial crystallization in terms of spherulite morphology and crystal growth rates at the nanoscale is examined. X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy were used to analyze the prepared GO and evaluate its relationship with the interfacial crystallization behavior of the blends.
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Affiliation(s)
- Phuong Nguyen-Tri
- Department
of Chemistry, Biochemistry and Physics, University du Québec à Trois-Rivières, Trois-Rivieres G9A 5H7, Québec, Canada
| | - Pascal Carrière
- Laboratoire
des Matériaux, Polymères, Interfaces et Environnement
Marin (MAPIEM), Université de Toulon, La Garde 83130 France
| | - Adam Duong
- Department
of Chemistry, Biochemistry and Physics, University du Québec à Trois-Rivières, Trois-Rivieres G9A 5H7, Québec, Canada
| | - Sonil Nanda
- Department
of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon S7N 5A9, Saskatchewan, Canada
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13
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Morsch S, Lyon S, Edmondson S, Gibbon S. Reflectance in AFM-IR: Implications for Interpretation and Remote Analysis of the Buried Interface. Anal Chem 2020; 92:8117-8124. [PMID: 32412736 PMCID: PMC7467426 DOI: 10.1021/acs.analchem.9b05793] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AFM-IR combines the chemical sensitivity of infrared spectroscopy with the lateral resolution of scanning probe microscopy, allowing nanoscale chemical analysis of almost any organic material under ambient conditions. As a result, this versatile technique is rapidly gaining popularity among materials scientists. Here, we report a previously overlooked source of data and artifacts in AFM-IR analysis; reflection from the buried interface. Periodic arrays of gold on glass are used to show that the overall signal in AFM-IR is affected by the wavelength-dependent reflectivity and thermal response of the underlying substrate. Excitingly, this demonstrates that remote analysis of heterogeneities at the buried interface is possible alongside that of an overlying organic film. On the other hand, AFM-IR users should carefully consider the composition and topography of underlying substrates when interpreting nanoscale infrared data. The common practice of generating ratio images, or indeed the normalization of AFM-IR spectra, should be approached with caution in the presence of substrate heterogeneity or variable sample thickness.
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Affiliation(s)
- Suzanne Morsch
- School of Materials, The University of Manchester, The Mill, Sackville St, Manchester M13 9PL, United Kingdom
| | - Stuart Lyon
- School of Materials, The University of Manchester, The Mill, Sackville St, Manchester M13 9PL, United Kingdom
| | - Steve Edmondson
- School of Materials, The University of Manchester, The Mill, Sackville St, Manchester M13 9PL, United Kingdom
| | - Simon Gibbon
- AkzoNobel, Stoneygate Lane, Felling, Gateshead, Tyne and Wear NE10 0JY, United Kingdom
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14
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Nguyen-Tri P, Ghassemi P, Carriere P, Nanda S, Assadi AA, Nguyen DD. Recent Applications of Advanced Atomic Force Microscopy in Polymer Science: A Review. Polymers (Basel) 2020; 12:E1142. [PMID: 32429499 PMCID: PMC7284686 DOI: 10.3390/polym12051142] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 12/26/2022] Open
Abstract
Atomic force microscopy (AFM) has been extensively used for the nanoscale characterization of polymeric materials. The coupling of AFM with infrared spectroscope (AFM-IR) provides another advantage to the chemical analyses and thus helps to shed light upon the study of polymers. This paper reviews some recent progress in the application of AFM and AFM-IR in polymer science. We describe the principle of AFM-IR and the recent improvements to enhance its resolution. We also discuss the latest progress in the use of AFM-IR as a super-resolution correlated scanned-probe infrared spectroscopy for the chemical characterization of polymer materials dealing with polymer composites, polymer blends, multilayers, and biopolymers. To highlight the advantages of AFM-IR, we report several results in studying the crystallization of both miscible and immiscible blends as well as polymer aging. Finally, we demonstrate how this novel technique can be used to determine phase separation, spherulitic structure, and crystallization mechanisms at nanoscales, which has never been achieved before. The review also discusses future trends in the use of AFM-IR in polymer materials, especially in polymer thin film investigation.
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Affiliation(s)
- Phuong Nguyen-Tri
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières (UQTR), Trois-Rivières, QC G8Z 4M3, Canada;
| | - Payman Ghassemi
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières (UQTR), Trois-Rivières, QC G8Z 4M3, Canada;
| | - Pascal Carriere
- Laboratoire MAPIEM (EA 4323), Matériaux Polymères Interfaces Environnement Marin, Université de Toulon, CEDEX 9, 83041 Toulon, France;
| | - Sonil Nanda
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A2, Canada;
| | - Aymen Amine Assadi
- ENSCR—Institut des Sciences Chimiques de Rennes (ISCR)—UMR CNRS 6226, Univ Rennes, 35700 Rennes, France;
| | - Dinh Duc Nguyen
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam;
- Department of Environmental Energy Engineering, Kyonggi University, Suwon 16227, Korea
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Long-Term Evaluation of Dip-Coated PCL-Blend-PEG Coatings in Simulated Conditions. Polymers (Basel) 2020; 12:polym12030717. [PMID: 32213843 PMCID: PMC7183267 DOI: 10.3390/polym12030717] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/04/2020] [Accepted: 03/07/2020] [Indexed: 11/17/2022] Open
Abstract
Our study focused on the long-term degradation under simulated conditions of coatings based on different compositions of polycaprolactone-polyethylene glycol blends (PCL-blend-PEG), fabricated for titanium implants by a dip-coating technique. The degradation behavior of polymeric coatings was evaluated by polymer mass loss measurements of the PCL-blend-PEG during immersion in SBF up to 16 weeks and correlated with those yielded from electrochemical experiments. The results are thoroughly supported by extensive compositional and surface analyses (FTIR, GIXRD, SEM, and wettability investigations). We found that the degradation behavior of PCL-blend-PEG coatings is governed by the properties of the main polymer constituents: the PEG solubilizes fast, immediately after the immersion, while the PCL degrades slowly over the whole period of time. Furthermore, the results evidence that the alteration of blend coatings is strongly enhanced by the increase in PEG content. The biological assessment unveiled the beneficial influence of PCL-blend-PEG coatings for the adhesion and spreading of both human-derived mesenchymal stem cells and endothelial cells.
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16
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Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles. JOURNAL OF COMPOSITES SCIENCE 2019. [DOI: 10.3390/jcs3020061] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This work emphasizes the use of the silver decorative method to enhance the antibacterial activity of TiO2 and ZnO nanoparticles. These silver-decorated nanoparticles (hybrid nanoparticles) were synthesized using sodium borohydride as a reducing agent, with the weight ratio of Ag precursors/oxide nanoparticles = 1:30. The morphology and optical properties of these hybrid nanoparticles were investigated using transmission electron microscopy (TEM), X-ray diffraction (XRD) patterns, and UV-Vis spectroscopy. The agar-well diffusion method was used to evaluate their antibacterial activity against both Staphylococcus aureus and Escherichia coli bacteria, with or without light irradiation. The TEM images indicated clearly that silver nanoparticles (AgNPs, 5–10 nm) were well deposited on the surface of nano-TiO2 particles (30–60 nm). In addition to this, bigger AgNPs (<20 nm) were dispersed on the surface of nano-ZnO particles (30–50 nm). XRD patterns confirmed the presence of AgNPs in both Ag-decorated TiO2 and Ag-decorated ZnO nanoparticles. UV-Vis spectra confirmed that the hybridization of Ag and oxide nanoparticles led to a shift in the absorption edge of oxide nanoparticles to the lower energy region (visible region). The antibacterial tests indicated that both oxide pure nanoparticles did not exhibit inhibitory effects against bacteria, with or without light irradiation. However, the presence of AgNPs in their hybrids, even at low content (<40 mg/mL), leads to a good antibacterial activity, and higher inhibition zones under light irradiation as compared to those in dark were observed.
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17
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Butyl Rubber-Based Composite: Thermal Degradation and Prediction of Service Lifetime. JOURNAL OF COMPOSITES SCIENCE 2019. [DOI: 10.3390/jcs3020048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Butyl rubber-based composite (BRC) is one of the most popular materials for the fabrication of protective gloves against chemical and mechanical risks. However, in many workplaces, such as metal manufacturing or automotive mechanical services, its mechanical hazards usually appear together with metalworking fluids (MWFs). The presence of these contaminants, particularly at high temperatures, could modify its properties due to the scission, the plasticization and the crosslinking of the polymer network and thus lead to severe modification of the mechanical and physicochemical properties of material. This work aims to determine the effect of temperature and a metalworking fluid on the mechanical behavior of butyl rubber composite, dealing with crosslinking density, cohesion forces and the elastic constant of BRC, based on Mooney–Rivlin’s theory. The effect of temperature with and without MWFs on the thermo-dynamical properties and morphology of butyl membranes was also investigated. The prediction of service lifetime was then evaluated from the extrapolation of the Arrhenius plot at different temperatures.
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18
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Biological Activity and Nanostructuration of Fe3O4-Ag/High Density Polyethylene Nanocomposites. JOURNAL OF COMPOSITES SCIENCE 2019. [DOI: 10.3390/jcs3020034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report here the synthesis of uniform nanospheres-like silver nanoparticles (Ag NPs, 5–10 nm) and the dumbbell-like Fe3O4-Ag hybrid nanoparticles (FeAg NPs, 8–16 nm) by the use of a seeding growth method in the presence of oleic acid (OA)/oleylamine (OLA) as surfactants. The antibacterial activity of pure nanoparticles and nanocomposites by monitoring the bacterial lag–log growth has been investigated. The electron transfer from Ag NPs to Fe3O4 NPs which enhances the biological of silver nanoparticles has been proven by nanoscale Raman spectroscopy. The lamellae structure in the spherulite of FeAg NPs/High Density Polyethylene (HDPE) nanocomposites seems to play the key role in the antibacterial activity of nanocomposites, which has been proven by nanoscale AFM-IR. An atomic force microscopy coupled with nanoscale infrared microscopy (AFM-IR) is used to highlight the distribution of nanoparticles on the surface of nanocomposite at the nanoscale. The presence of FeAg NPs in PE nanocomposites has a better antibacterial activity than that reinforced by Ag NPs due to the faster Ag+ release rate from the Fe3O4-Ag hybrid nanoparticles and the ionization of Ag NPs in hybrid nanostructure.
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19
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Nguyen-Tri P, Prud'homme RE. Nanoscale analysis of the photodegradation of polyester fibers by AFM-IR. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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