1
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Kandel DR, Poudel MB, Radoor S, Chang S, Lee J. Decoration of dandelion-like manganese-doped iron oxide microflowers on plasma-treated biochar for alleviation of heavy metal pollution in water. CHEMOSPHERE 2024; 357:141757. [PMID: 38583537 DOI: 10.1016/j.chemosphere.2024.141757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/05/2024] [Accepted: 03/17/2024] [Indexed: 04/09/2024]
Abstract
Carbon-based biowaste incorporated with inorganic oxides as a composite is an enticing option to mitigate heavy metal pollution in water resources due to its more economical and efficient performance. With this in mind, we constructed manganese-doped iron oxide microflowers resembling the dandelion-like structure on the surface of cold plasma-treated carbonized rice husk (MnFe2O3/PCRH). The prepared composite exhibited 45% and 19% higher removal rates for Cu2+ and Cd2+, respectively than the pristine CRH. The MnFe2O3/PCRH composite was characterized using XRD, FTIR, FESEM, EDX, HR-TEM, XPS, BET, TGA, and zeta potential, while the adsorption capacities were investigated as a function of pH, time, and initial concentration in batch trials. As for the kinetics, the pseudo-second-order was the rate-limiting over the pseudo-first-order and Elovich model, demonstrating that the chemisorption process governed the adsorption of Cu2+ and Cd2+. Additionally, the maximum adsorption capacities of the MnFe2O3/PCRH were found to be 122.8 and 102.5 mg/g for Cu2+ and Cd2+, respectively. Based on thorough examinations by FESEM-EDS, FTIR, and XPS, the possible mechanisms for the adsorption can be ascribed to surface complexation by oxygen-containing groups, a dissolution-precipitation of the ions with -OH groups, electrostatic attraction between metal ions and the adsorbent's partially charged surface, coordination of Cu2+ and Cd2+ with π electrons by aromatic/graphitic carbon in the MnFe2O3/PCRH, and pore filling and diffusion. Lastly, the adsorption efficiencies were maintained at about 70% of its initial adsorption even after five adsorption-desorption cycles, displaying its remarkable stability and reusability.
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Affiliation(s)
- Dharma Raj Kandel
- Department of Bionanotechnology and Bioconvergence Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea
| | - Milan Babu Poudel
- Department of Convergence Technology Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea
| | - Sabarish Radoor
- Department of Polymer-Nano Science and Technology, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea
| | - Seungwon Chang
- Department of Bionanotechnology and Bioconvergence Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea
| | - Jaewoo Lee
- Department of Bionanotechnology and Bioconvergence Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea; Department of Polymer-Nano Science and Technology, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea; Department of JBNU-KIST Industry-Academia Convergence Research, Polymer Materials Fusion Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea.
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2
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Rui J, Cheng S, Ren H, Cui S, Huang J. Electric Field Effect of the Plasma-Initiated Polymerization of Methyl Methacrylate: A Negatively Charged Long-Lived Radical. Polymers (Basel) 2024; 16:1497. [PMID: 38891444 PMCID: PMC11174972 DOI: 10.3390/polym16111497] [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: 04/29/2024] [Revised: 05/17/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Plasma-initiated polymerization (PIP) is generally attributed to a radical process due to its inhibiting property. However, its unique polymerization behaviors like long-lived radical and solvent effect do not comply well with the traditional radical mechanism. Herein, the PIP of methyl methacrylate (MMA) was conducted in a high-voltage DC electric field to investigate the charged nature of its radicals. Consequently, the polymerization presented a preferential distribution of polymers at the anode but not the cathode, revealing the negatively charged nature of the growing radicals. An acceleration phenomenon, accompanied by the growth in molecular weights and the reduction in molecular weight distributions (Ð), was observed at the voltages above 16 kV, suggesting the dissociation of ion pairs of growing radicals. The PIP yielded PMMA with analogous chemical and steric structures to those of PMMA from traditional radical initiation, whether in the presence or absence of the external electric field. This work offers new insights into the PIP of vinyl monomers, wherein a one-electron transfer reaction is inferred to be involved in the monomer activation.
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Affiliation(s)
- Jiayu Rui
- College of Materials Science and Engineering, Nanjing Tech University, No. 30 Puzhu Road (S), Nanjing 211816, China
| | - Siru Cheng
- College of Materials Science and Engineering, Nanjing Tech University, No. 30 Puzhu Road (S), Nanjing 211816, China
| | - He Ren
- College of Materials Science and Engineering, Nanjing Tech University, No. 30 Puzhu Road (S), Nanjing 211816, China
| | - Sheng Cui
- College of Materials Science and Engineering, Nanjing Tech University, No. 30 Puzhu Road (S), Nanjing 211816, China
| | - Jian Huang
- College of Materials Science and Engineering, Nanjing Tech University, No. 30 Puzhu Road (S), Nanjing 211816, China
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3
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Krysztofik A, Pula P, Pochylski M, Zaleski K, Gapinski J, Majewski P, Graczykowski B. Fast Photoactuation and Environmental Response of Humidity-Sensitive pDAP-Silicon Nanocantilevers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403114. [PMID: 38781555 DOI: 10.1002/adma.202403114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/26/2024] [Indexed: 05/25/2024]
Abstract
Multi-responsive nanomembranes are a new class of advanced materials that can be harnessed in complex architectures for micro and nano-manipulators, artificial muscles, energy harvesting, soft robotics, and sensors. The design and fabrication of responsive membranes must meet such challenges as trade-offs between responsiveness and mechanical durability, volumetric low-cost production ensuring low environmental impact, and compatibility with standard technologies or biological systems This work demonstrates the fabrication of multi-responsive, mechanically robust poly(1,3-diaminopropane) (pDAP) nanomembranes and their application in fast photoactuators. The pDAP films are developed using a plasma-assisted polymerization technique that offers large-scale production and versatility of potential industrial relevance. The pDAP layers exhibit high elasticity with the Young's modulus of ≈7 GPa and remarkable mechanical durability across 20-80 °C temperatures. Notably, pDAP membranes reveal immediate and reversible contraction triggered by light, rising temperature, or reducing relative humidity underpinned by a reversible water sorption mechanism. These features enable the fabrication of photoactuators composed of pDAP-coated Si nanocantilevers, demonstrating ms timescale response to light, tens of µm deflections, and robust performance up to kHz frequencies. These results advance fundamental research on multi-responsive nanomembranes and hold the potential to boost versatile applications in light-to-motion conversion and sensing toward the industrial level.
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Affiliation(s)
- Adam Krysztofik
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, Poznań, 61-614, Poland
| | - Przemyslaw Pula
- Faculty of Chemistry, University of Warsaw, Pasteur 1, Warsaw, 02-093, Poland
| | - Mikolaj Pochylski
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, Poznań, 61-614, Poland
| | - Karol Zaleski
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, Poznan, 61-614, Poland
| | - Jacek Gapinski
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, Poznań, 61-614, Poland
| | - Pawel Majewski
- Faculty of Chemistry, University of Warsaw, Pasteur 1, Warsaw, 02-093, Poland
| | - Bartlomiej Graczykowski
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, Poznań, 61-614, Poland
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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4
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Muramoto S, Graham DJ, Castner DG. ToF-SIMS analysis of ultrathin films and their fragmentation patterns. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY. A, VACUUM, SURFACES, AND FILMS : AN OFFICIAL JOURNAL OF THE AMERICAN VACUUM SOCIETY 2024; 42:023416. [PMID: 38328692 PMCID: PMC10846908 DOI: 10.1116/6.0003249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/10/2023] [Accepted: 01/05/2024] [Indexed: 02/09/2024]
Abstract
Organic thin films are of great interest due to their intriguing interfacial and functional properties, especially for device applications such as thin-film transistors and sensors. As their thickness approaches single nanometer thickness, characterization and interpretation of the extracted data become increasingly complex. In this study, plasma polymerization is used to construct ultrathin films that range in thickness from 1 to 20 nm, and time-of-flight secondary ion mass spectrometry coupled with principal component analysis is used to investigate the effects of film thickness on the resulting spectra. We demonstrate that for these cross-linked plasma polymers, at these thicknesses, the observed trends are different from those obtained from thicker films with lower degrees of cross-linking: contributions from ambient carbon contamination start to dominate the mass spectrum; cluster-induced nonlinear enhancement in secondary ion yield is no longer observed; extent of fragmentation is higher due to confinement of the primary ion energy; and the size of the primary ion source also affects fragmentation (e.g., Bi1 versus Bi5). These differences illustrate that care must be taken in choosing the correct primary ion source as well as in interpreting the data.
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Affiliation(s)
- Shin Muramoto
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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5
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Khatibi M, Nahil MA, Williams PT. Improving the Quality of Bio-oil Using the Interaction of Plastics and Biomass through Copyrolysis Coupled with Nonthermal Plasma Processing. ENERGY & FUELS : AN AMERICAN CHEMICAL SOCIETY JOURNAL 2024; 38:1240-1257. [PMID: 38264623 PMCID: PMC10801694 DOI: 10.1021/acs.energyfuels.3c04082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 01/25/2024]
Abstract
Bio-oil produced from the pyrolysis of biomass is chemically complex, viscous, highly acidic, and highly oxygenated. Copyrolysis of biomass and plastics can enhance oil quality by raising the H/C ratio, leading to improved biofuel properties. In this work, copyrolysis of polystyrene and biomass was passed to a second-stage dielectric barrier discharge nonthermal plasma reactor with the aim to further improve the product bio-oil. Pyrolysis of the polystyrene and biomass produces volatiles that pass to the second stage to undergo cracking and autohydrogenation reactions under nonthermal plasma conditions. There was a synergistic interaction between biomass and polystyrene in terms of overall oil and gas yield and composition even in the absence of the nonthermal plasma. However, the introduction of the nonthermal plasma produced a marked increase in monocyclic aromatic hydrocarbons (e.g., ethylbenzene), whereas polycyclic aromatic compounds decreased in concentration. Most notably, the influence of the plasma markedly reduced the quantity of oxygenated compounds in the product oil. It is suggested that the unique reactive environment produced by the plasma involving high-energy electrons, excited radicals, ions, and intermediates increases the interaction of the polystyrene and biomass pyrolysis volatiles. Increasing input plasma power from 50 to 70 W further enhanced the effects of the nonthermal plasma.
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Affiliation(s)
- Maryam Khatibi
- School of Chemical & Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
| | - Mohamad A Nahil
- School of Chemical & Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
| | - Paul T Williams
- School of Chemical & Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
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6
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Lisovskiy V, Minenkov A, Dudin S, Bogatyrenko S, Platonov P, Yegorenkov V. Synthesis of Nanoparticles and Theoretical Model of Their Retention in Plasma of RF Capacitive Discharge with Vertically Arranged Electrodes in Acetylene. ACS OMEGA 2022; 7:47941-47955. [PMID: 36591135 PMCID: PMC9798781 DOI: 10.1021/acsomega.2c05846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
In the present research, experiments on the formation and retention of nanoparticles (NPs) in the plasma of radio frequency (RF) capacitive discharge in acetylene were carried out with vertically positioned internal electrodes. It has been shown via SEM and TEM techniques that NPs found on the horizontal tube wall after the discharge operation have a spherical shape with a predominant diameter of approximately 400-600 nm. HRTEM analysis reveals their amorphous structure. At the same time, such NPs were not found on vertical electrodes, only a polymer film was deposited. To elucidate the possibility of NPs leaving the plasma in the direction of vertical electrodes, a model of NP retention in the near-electrode sheath of an RF capacitive discharge was elaborated. The model has shown that nanometer- and even micrometer-sized particles formed in the plasma cannot cross the near-electrode sheath and reach the electrode surface. For the plasma consisting of three charged components (positive ions, electrons, and NPs), an analytical model of ambipolar diffusion was developed. Applying this model, it has been shown that the ambipolar electric field can keep the micrometer-sized NPs in the plasma if their concentration is low. However, in the case of a high concentration of NPs, they can be retained with a diameter of no more than a few hundred nanometers due to a significant decrease in the ambipolar electric field. The calculation results are in agreement with our experimental data.
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Affiliation(s)
- Valeriy Lisovskiy
- School
of Physics and Technology, V.N. Karazin
Kharkiv National University, Kharkiv61022, Ukraine
| | - Alexey Minenkov
- Christian
Doppler Laboratory for Nanoscale Phase Transformations, Center for
Surface and Nanoanalytics, Johannes Kepler
University Linz, Linz4040, Austria
| | - Stanislav Dudin
- School
of Physics and Technology, V.N. Karazin
Kharkiv National University, Kharkiv61022, Ukraine
| | - Sergiy Bogatyrenko
- School
of Physics and Technology, V.N. Karazin
Kharkiv National University, Kharkiv61022, Ukraine
| | - Pavel Platonov
- School
of Physics and Technology, V.N. Karazin
Kharkiv National University, Kharkiv61022, Ukraine
| | - Vladimir Yegorenkov
- School
of Physics and Technology, V.N. Karazin
Kharkiv National University, Kharkiv61022, Ukraine
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7
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Kravets LI, Altynov VA, Yarmolenko MA, Gainutdinov RV, Satulu V, Mitu B, Dinescu G. Deposition of Hydrophobic Polymer Coatings on the Surface of Track-Etched Membranes from an Active Gas Phase. MEMBRANES AND MEMBRANE TECHNOLOGIES 2022. [DOI: 10.1134/s251775162202007x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Dahiru UH, Saleem F, Zhang K, Harvey A. Plasma-assisted removal of methanol in N 2, dry and humidified air using a dielectric barrier discharge (DBD) reactor. RSC Adv 2022; 12:10997-11007. [PMID: 35425072 PMCID: PMC8989026 DOI: 10.1039/d2ra01097f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/30/2022] [Indexed: 11/21/2022] Open
Abstract
In this work, a non-thermal plasma dielectric barrier discharge (DBD) was used to remove methanol from ambient air. The effects of carrier gases (N2, dry and humidified air), power (2-10 W), inlet concentration (260-350 ppm), and residence time (1.2-3.3 s) were investigated to evaluate the performance of the plasma DBD reactor in terms of removal efficiency, product selectivity and reduction of unwanted by-products at ambient temperature and atmospheric pressure. It was found that the conversion of methanol increased with power and residence time regardless of the carrier gas used. However, the removal efficiency decreased with the increasing concentration of CH3OH. Almost complete removal of methanol (96.7%) was achieved at 10 W and a residence time of 3.3 s in dry air. The removal efficiency of methanol followed a sequence of dry air > humidified air > N2 carrier gas. This was due to the action of the O radical in dry air, which dominates the decomposition process of the plasma system. The introduction of water vapour into the DBD system decreased the removal efficiency but had a number of significant advantages: increased CO2 selectivity and yield of H2, it significantly reduced the formation of O3, CO and higher hydrocarbons. These influences are probably due to the presence of potent OH radicals, and the conversion pathways for the various effects are proposed. It is important to note that no solid residue was formed in the DBD reactor in any carrier gas. Overall, this research indicates that methanol can be almost completely removed with the correct operating parameters (96.7% removal; 10 W; 3.3 s) and shows that humidification of the gas stream is beneficial.
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Affiliation(s)
- Usman H Dahiru
- Department of Chemical Engineering, School of Engineering, Newcastle University Newcastle upon Tyne NE1 7RU UK .,Raw Materials Research and Development Council, Federal Ministry of Science and Technology Abuja Nigeria
| | - Faisal Saleem
- Department of Chemical Engineering, School of Engineering, Newcastle University Newcastle upon Tyne NE1 7RU UK .,Department of Chemical and Polymer Engineering, University of Engineering and Technology Lahore, Faisalabad Campus Pakistan
| | - Kui Zhang
- Department of Chemical Engineering, School of Engineering, Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Adam Harvey
- Department of Chemical Engineering, School of Engineering, Newcastle University Newcastle upon Tyne NE1 7RU UK
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9
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Ferrara V, Vandenabeele C, Cossement D, Snyders R, Satriano C. Enhanced plasmonic processes in amino-rich plasma polymer films for applications at the biointerface. Phys Chem Chem Phys 2021; 23:27365-27376. [PMID: 34854856 DOI: 10.1039/d1cp02271g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new plasmonic biosensor was developed in a planar chip-based format by coupling the plasmonic properties of gold nanoparticles (Au NPs) with the mechanical and bioadhesive features of unconventional organic thin films deposited from plasma, namely primary amine-based plasma polymer films (PPFs). A self-assembled layer of spherical Au NPs, 12 nm in diameter, was electrostatically immobilized onto optically transparent silanised glass. In the next step, the Au NP layer was coated with an 18 nm polymeric thick PPF layer via the simultaneous polymerization/deposition of a cyclopropylamine (CPA) precursor performed by radio frequency discharge, both in pulsed and in continuous wave modes. The CPA PFF surface plays the dual role of an adsorbent towards negatively charged chemical species as well as an enhancer of plasmonic signals. The biosensor was tested in a proof-of-concept series of experiments of human serum albumin physisorption, and chosen as a model system for blood serum. The peculiar surface features of CPA PPF, before and after the exposure to buffered solution of fluorescein isothiocyanate-labelled human serum albumin (FITC-HSA), were investigated by a multi-technique approach, including UV-visible and X-ray photoelectron spectroscopies, atomic force microscopy, scanning electron microscopy, contact angle and surface free energy measurements. The results showed the very promising potentialities from both bioanalytical and physicochemical points of view in scrutinizing the macromolecule behavior at the biointerface.
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Affiliation(s)
- Vittorio Ferrara
- Department of Chemical Sciences, University of Catania, viale Andrea Doria 6, 95125 Catania, Italy.
| | | | - Damien Cossement
- Materia Nova Research Center, avenue N. Copernic 1, 7000 Mons, Belgium
| | - Rony Snyders
- ChIPS, Université de Mons, Place du Parc 23, 7000 Mons, Belgium. .,Materia Nova Research Center, avenue N. Copernic 1, 7000 Mons, Belgium
| | - Cristina Satriano
- Department of Chemical Sciences, University of Catania, viale Andrea Doria 6, 95125 Catania, Italy.
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10
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Thomas HM, Ahangar P, Fitridge R, Kirby GTS, Mills SJ, Cowin AJ. Plasma-polymerized pericyte patches improve healing of murine wounds through increased angiogenesis and reduced inflammation. Regen Biomater 2021; 8:rbab024. [PMID: 34221447 PMCID: PMC8242226 DOI: 10.1093/rb/rbab024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/13/2021] [Accepted: 05/10/2021] [Indexed: 12/15/2022] Open
Abstract
Pericytes have the potential to be developed as a cell therapy for the treatment of wounds; however, the efficacy of any cell therapy relies on the successful delivery of intact and functioning cells. Here, the effect of delivering pericytes on wound repair was assessed alongside the development of a surface-functionalized pericyte patch. Plasma polymerization (PP) was used to functionalize the surface of silicone patches with heptylamine (HA) or acrylic acid (AA) monomers. Human pericytes were subsequently delivered to murine excisional wounds by intradermal injection or using the pericyte-laden patches and the comparative effects on wound healing, inflammation and revascularization determined. The AA surface provided the superior transfer of the cells to de-epidermized dermis. Excisional murine wounds treated either with pericytes injected directly into the wound or with the pericyte-laden AA patches showed improved healing with decreased neutrophil infiltration and reduced numbers of macrophages in the wounds. Pericyte delivery also enhanced angiogenesis through a mechanism independent of VEGF signalling. Pericytes, when delivered to wounds, improved healing responses by dampening inflammation and promoting angiogenesis. Delivery of pericytes using PP-AA-functionalized patches was equally as effective as direct injection of pericytes into wounds. Pericyte-functionalized dressings may therefore be a clinically relevant approach for the treatment of wounds.
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Affiliation(s)
- Hannah M Thomas
- Future Industries Institute, University of South Australia, Mawson Lakes SA 5095, Australia.,Cell Therapy Manufacturing Cooperative Research Centre, Adelaide SA 5000, Australia
| | - Parinaz Ahangar
- Future Industries Institute, University of South Australia, Mawson Lakes SA 5095, Australia.,Cell Therapy Manufacturing Cooperative Research Centre, Adelaide SA 5000, Australia
| | - Robert Fitridge
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide SA 5005, Australia
| | - Giles T S Kirby
- Future Industries Institute, University of South Australia, Mawson Lakes SA 5095, Australia
| | - Stuart J Mills
- Future Industries Institute, University of South Australia, Mawson Lakes SA 5095, Australia.,Cell Therapy Manufacturing Cooperative Research Centre, Adelaide SA 5000, Australia
| | - Allison J Cowin
- Future Industries Institute, University of South Australia, Mawson Lakes SA 5095, Australia.,Cell Therapy Manufacturing Cooperative Research Centre, Adelaide SA 5000, Australia
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11
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Abstract
Abstract
Plasma polymers are micro-, or more commonly, nano-sized coatings that can be deposited on a variety of substrates through different approaches. The versatility of these polymers is incremented by the possibility to use other precursors than conventional polymerization reactions and by potential changes in the polymerization mechanisms according to the intrinsic physical and chemical properties of the plasma. That flexibility offers a fruitful ground to a great range of scientific and engineering fields, but it also brings many challenges for universalization of empirical observations. In this review, the use of different precursors, substrates and changes in plasma external parameters were evaluated as common, but not necessarily ideal nor exhaustive, variables for the analysis of mechanical properties of plasma polymer films. The commonly reported trends are complemented with the exceptions, and a variety of hypothesis drawn by the empirical observations are shown. The techniques and methods used for determining the mechanical properties of plasma polymers, the effect of post-treatments on them and some applications are evaluated. Finally, a general conclusion highlighting the challenges of the field is provided.
Article highlights
The mechanical properties of plasma polymers are evaluated as a function of selected parameters.
The techniques of characterization of mechanical properties of plasma polymers are summarized.
A discussion of future and current demands for the analysis of mechanical properties of plasma polymers is done.
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12
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Hennekam BE, Al‐Bataineh SA, Michelmore A. Fabrication and characterization of biorenewable plasma polymer films using sandalwood oil precursor. J Appl Polym Sci 2020. [DOI: 10.1002/app.49288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Brent E. Hennekam
- School of Natural Built EnvironmentsUniversity of South Australia Mawson Lakes South Australia Australia
| | - Sameer A. Al‐Bataineh
- Future Industries InstituteUniversity of South Australia Mawson Lakes South Australia Australia
| | - Andrew Michelmore
- Future Industries InstituteUniversity of South Australia Mawson Lakes South Australia Australia
- School of EngineeringUniversity of South Australia Mawson Lakes South Australia Australia
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13
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Bachhuka A, Madathiparambil Visalakshan R, Law CS, Santos A, Ebendorff-Heidepriem H, Karnati S, Vasilev K. Modulation of Macrophages Differentiation by Nanoscale-Engineered Geometric and Chemical Features. ACS APPLIED BIO MATERIALS 2020; 3:1496-1505. [DOI: 10.1021/acsabm.9b01125] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Bachhuka
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - R. Madathiparambil Visalakshan
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, South Australia 5095, Australia
| | - C. S. Law
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
- School of Chemical Engineering, University of Adelaide, Engineering North Building, Adelaide, South Australia 5005, Australia
| | - A. Santos
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
- School of Chemical Engineering, University of Adelaide, Engineering North Building, Adelaide, South Australia 5005, Australia
| | - H. Ebendorff-Heidepriem
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - S. Karnati
- Institute for Anatomy and Cell Biology, Julius Maximilians University, Koellikerstrasse 6, Wuerzburg 97070, Germany
| | - K. Vasilev
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, South Australia 5095, Australia
- School of Engineering, University of South Australia, Mawson Lakes Campus, Adelaide, South Australia 5095, Australia
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14
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Michl TD, Tran DTT, Kuckling HF, Zhalgasbaikyzy A, Ivanovská B, González García LE, Visalakshan RM, Vasilev K. It takes two for chronic wounds to heal: dispersing bacterial biofilm and modulating inflammation with dual action plasma coatings. RSC Adv 2020; 10:7368-7376. [PMID: 35492196 PMCID: PMC9049834 DOI: 10.1039/c9ra09875e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/06/2020] [Indexed: 11/21/2022] Open
Abstract
Chronic wounds are affecting increasingly larger portions of the general population and their treatment has essentially remained unchanged for the past century. This lack of progress is due to the complex problem that chronic wounds are simultaneously infected and inflamed. Both aspects need to be addressed together to achieve a better healing outcome. Hence, we hereby demonstrate that the stable nitroxide radical (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) can be plasma polymerized into smooth coatings (TEMPOpp), as seen via atomic force microscopy, X-ray photoelectron spectroscopy and ellipsometry. Upon contact with water, these coatings leach nitroxides into aqueous supernatant, as measured via EPR. We then exploited the known cell-signalling qualities of TEMPO to change the cellular behaviour of bacteria and human cells that come into contact with the surfaces. Specifically, the TEMPOpp coatings not only suppressed biofilm formation of the opportunistic bacterium Staphylococcus epidermidis but also dispersed already formed biofilm in a dose-dependent manner; a crucial aspect in treating chronic wounds that contain bacterial biofilm. Thus the coatings' microbiological efficacy correlated with their thickness and the thickest coating was the most efficient. Furthermore, this dose-dependent effect was mirrored in significant cytokine reduction of activated THP-1 macrophages for the four cytokines TNF-α, IL-1β, IL-6 and IP-10. At the same time, the THP-1 cells retained their ability to adhere and colonize the surfaces, as verified via SEM imaging. Thus, summarily, we have exploited the unique qualities of plasma polymerized TEMPO coatings in targeting both infection and inflammation simultaneously; demonstrating a novel alternative to how chronic wounds could be treated in the future. We plasma polymerized the stable nitroxide radical TEMPO into thin coatings and exploited the coatings' unique qualities in targeting both infection and inflammation simultaneously; demonstrating a novel alternative as to how chronic wounds could be treated in the future.![]()
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Affiliation(s)
| | | | | | | | - Barbora Ivanovská
- School of Engineering
- University of South Australia
- Mawson Lakes
- Australia
| | | | | | - Krasimir Vasilev
- School of Engineering
- University of South Australia
- Mawson Lakes
- Australia
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15
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Saboohi S, Short RD, Coad BR, Griesser HJ, Michelmore A. The Physics of Plasma Ion Chemistry: A Case Study of Plasma Polymerization of Ethyl Acetate. J Phys Chem Lett 2019; 10:7306-7310. [PMID: 31710230 DOI: 10.1021/acs.jpclett.9b02855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Deposition chemistry from plasma is highly dependent on both the chemistry of the ions arriving at surfaces and the ion energy. Typically, when measuring the energy distribution of ions arriving at surfaces from plasma, it is assumed that the distributions are the same for all ionic species. Using ethyl acetate as a representative organic precursor molecule, we have measured the ion chemistry and ion energy as a function of pressure and power. We show that at low pressure (<2 Pa) this assumption is valid; however, at elevated pressures ion-molecule collisions close to the deposition surface affect both the energy and chemistry of these ions. Smaller ions are formed close to the surface and have lower energy than larger ionic species which are formed in the bulk of the plasma. The changes in plasma chemistry therefore are closely linked to the physics of the plasma-surface interface.
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Affiliation(s)
- Solmaz Saboohi
- Future Industries Institute , University of South Australia , Mawson Lakes Campus, Mawson Lakes , Australia , 5095
| | - Robert D Short
- Materials Science Institute and Department of Chemistry , University of Lancaster , City of Lancaster LA1 4YW , U.K
| | - Bryan R Coad
- School of Agriculture, Food and Wine , University of Adelaide , Adelaide , SA 5005 , Australia
| | - Hans J Griesser
- Future Industries Institute , University of South Australia , Mawson Lakes Campus, Mawson Lakes , Australia , 5095
| | - Andrew Michelmore
- Future Industries Institute , University of South Australia , Mawson Lakes Campus, Mawson Lakes , Australia , 5095
- School of Engineering , University of South Australia , Mawson Lakes Campus, Mawson Lakes , Australia , 5095
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16
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Exploiting Reactor Geometry to Manipulate the Properties of Plasma Polymerized Acrylic Acid Films. MATERIALS 2019; 12:ma12162597. [PMID: 31443201 PMCID: PMC6720200 DOI: 10.3390/ma12162597] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 11/17/2022]
Abstract
A number of different reactor geometries can be used to deposit plasma polymer films containing specific functional groups and result in films with differing properties. Plasma polymerization was carried out in a low-pressure custom-built stainless steel T-shaped reactor using a radio frequency generator. The internal aluminium disk electrode was positioned in two different geometries: parallel and perpendicular to the samples at varying distances to demonstrate the effect of varying the electrode position and distance from the electrode on the properties of plasma polymerized acrylic acid (ppAAc) films. The surface chemistry and film thickness before and after aqueous immersion were analysed via X-ray photoelectron spectroscopy and spectroscopic ellipsometry, respectively. For a perpendicular electrode, the ppAAc film thicknesses and aqueous stability decreased while the COOH/R group concentrations increased as the distance from the electrode increased due to decreased fragmentation. For films deposited at similar distances from the electrode, those deposited with the parallel electrode were thicker, had lower COOH/R group concentrations and greater aqueous stability. These results demonstrate the necessity of having a well characterized plasma reactor to enable the deposition of films with specific properties and how reactor geometry can be exploited to tailor film properties.
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17
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Abstract
Inspired by nature, tunable wettability has attracted a lot of attention in both academia and industry. Various methods of polymer surface tailoring have been studied to control the changes in wetting behavior. Polymers with a precisely controlled wetting behavior in a specific environment are blessed with a wealth of opportunities and potential applications exploitable in biomaterial engineering. Controlled wetting behavior can be obtained by combining surface chemistry and morphology. Plasma assisted polymer surface modification technique has played a significant part to control surface chemistry and morphology, thus improving the surface wetting properties of polymers in many applications. This review focuses on plasma polymerization and investigations regarding surface chemistry, surface wettability and coating kinetics, as well as coating stability. We begin with a brief overview of plasma polymerization; this includes growth mechanisms of plasma polymerization and influence of plasma parameters. Next, surface wettability and theoretical background structures and chemistry of superhydrophobic and superhydrophilic surfaces are discussed. In this review, a summary is made of recent work on tunable wettability by tailoring surface chemistry with physical appearance (i.e. substrate texture). The formation of smart polymer coatings, which adjust their surface wettability according to outside environment, including, pH, light, electric field and temperature, is also discussed. Finally, the applications of tunable wettability and pH responsiveness of polymer coatings in real life are addressed. This review should be of interest to plasma surface science communality particularly focused controlled wettability of smart polymer surfaces.
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18
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Surface Functionalization of Exposed Core Glass Optical Fiber for Metal Ion Sensing. SENSORS 2019; 19:s19081829. [PMID: 30999613 PMCID: PMC6515075 DOI: 10.3390/s19081829] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 11/28/2022]
Abstract
One of the biggest challenges associated with exposed core glass optical fiber-based sensing is the availability of techniques that can be used to generate reproducible, homogeneous and stable surface coating. We report a one step, solvent free method for surface functionalization of exposed core glass optical fiber that allows achieving binding of fluorophore of choice for metal ion sensing. The plasma polymerization-based method yielded a homogeneous, reproducible and stable coating, enabling high sensitivity aluminium ion sensing. The sensing platform reported in this manuscript is versatile and can be used to bind different sensing molecules opening new avenues for optical fiber-based sensing.
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19
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Plasma Modification and Synthesis of Membrane Materials-A Mechanistic Review. MEMBRANES 2018; 8:membranes8030056. [PMID: 30081505 PMCID: PMC6160937 DOI: 10.3390/membranes8030056] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/25/2018] [Accepted: 07/25/2018] [Indexed: 12/27/2022]
Abstract
Although commercial membranes are well established materials for water desalination and wastewater treatment, modification on commercial membranes is still necessary to deliver high-performance with enhanced flux and/or selectivity and fouling resistance. A modification method with plasma techniques has been extensively applied for high-performance membrane production. The paper presents a mechanistic review on the impact of plasma gas and polymerization, at either low pressure or atmospheric pressure on the material properties and performance of the modified membranes. At first, plasma conditions at low-pressure such as plasma power, gas or monomer flow rate, reactor pressure, and treatment duration which affect the chemical structure, surface hydrophilicity, morphology, as well as performance of the membranes have been discussed. The underlying mechanisms of plasma gas and polymerization have been highlighted. Thereafter, the recent research in plasma techniques toward membrane modification at atmospheric environment has been critically evaluated. The research focuses of future plasma-related membrane modification, and fabrication studies have been predicted to closely relate with the implementation of the atmospheric-pressure processes at the large-scale.
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20
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Thiry D, Pouyanne M, Cossement D, Hemberg A, Snyders R. Surface Engineering of Bromine-Based Plasma Polymer Films: A Step toward High Thiol Density Containing Organic Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7655-7662. [PMID: 29799206 DOI: 10.1021/acs.langmuir.8b01045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nowadays, the development of synthetic methods regarding the fabrication of -SH containing organic coatings continues to attract a considerable attention. Among the potential techniques, the plasma polymerization appears as one of the most promising method but the difficulty to control the chemical composition of the layers is highly limiting. In this context, in this work, we report on an original method combining dry and wet chemistry approaches in view of selectively incorporating -SH functions in organic coatings. Our strategy is based on the (i) synthesis of a bromine-containing plasma polymer film, followed by (ii) a selective grafting of dithiol-based molecule on C-Br bond. Investigating the plasma polymerization process has revealed that, in our experimental window, the load of energy in the discharge has little influence on the chemical composition as well as on the cross-linking degree of the layers. This behavior is explained by considering the concomitant influence of the gas-phase reactions and the supply of energy to the growing film through ion bombardment. With regard to the functionalization strategy, based on comparative X-ray photoelectron spectroscopy measurements, it has been unambiguously demonstrated that a selective reaction between propanedithiol and the C-Br bond acting as the reactive center takes place resulting in the removing of the bromine atom and the incorporation of -SH groups in the PPF. Depending on the grafting reaction duration, the relative proportion of carbon bearing the -SH group is found to evolve from 4 to 6%. On the other hand, the dissolution of unbounded bromine-based species in the liquid medium during the grafting procedure is also evidenced. The whole set of our results clearly demonstrates the attractiveness of our strategy paving the way for new development in the fabrication of -SH-rich-containing organic thin films.
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Affiliation(s)
- Damien Thiry
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP , Université de Mons , 20 Place du Parc , B-7000 Mons , Belgium
| | - Matthias Pouyanne
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP , Université de Mons , 20 Place du Parc , B-7000 Mons , Belgium
| | - Damien Cossement
- Materia-Nova Research Center, Parc Initialis , B-7000 Mons , Belgium
| | - Axel Hemberg
- Materia-Nova Research Center, Parc Initialis , B-7000 Mons , Belgium
| | - Rony Snyders
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP , Université de Mons , 20 Place du Parc , B-7000 Mons , Belgium
- Materia-Nova Research Center, Parc Initialis , B-7000 Mons , Belgium
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21
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Pleskunov P, Nikitin D, Tafiichuk R, Shelemin A, Hanuš J, Khalakhan I, Choukourov A. Carboxyl-Functionalized Nanoparticles Produced by Pulsed Plasma Polymerization of Acrylic Acid. J Phys Chem B 2018; 122:4187-4194. [PMID: 29578707 DOI: 10.1021/acs.jpcb.8b01648] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carboxyl-enriched and size-selected polymer nanoparticles (NPs) may prove to be very useful in biomedical applications for linker-free binding of biomolecules and their transport to cells. In this study, we report about the synthesis of such NPs by low-pressure low-temperature pulsed plasma polymerization of acrylic acid. Gas aggregation cluster source was adapted to operate plasma with a constant pulse period of 50 μs and with varying duty cycle. The NPs were produced with the size ranging from 31 ± 5 to 93 ± 14 nm and with retention of the carboxyl groups ranging from 4.0 to 12.0 atom %. Two regimes of the NP formation were identified. In the large duty cycle regime, the NP growth was interfered with by positive ion bombardment which resulted in the ion-driven detachment of the carboxyl species and in the formation of carboxyl-deficient NPs. In the small duty cycle regime, the NP growth was accompanied by the radical-driven chain propagation with the attachment of intact monomer molecules. Improved efficacy of the monomer retention resulted in increased concentration of the carboxyl groups.
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22
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Shirazi HS, Rogers N, Michelmore A, Whittle JD. Particle aggregates formed during furfuryl methacrylate plasma polymerization affect human mesenchymal stem cell behaviour. Colloids Surf B Biointerfaces 2018; 161:261-268. [PMID: 29096370 DOI: 10.1016/j.colsurfb.2017.10.065] [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: 06/27/2017] [Revised: 09/22/2017] [Accepted: 10/26/2017] [Indexed: 10/18/2022]
Abstract
Human Mesenchymal Stem cells (hMSCs) are becoming a major focus in biomedical fields. Application of in vitro expanded hMSCs to treat numerous ailments has led to a commercial emphasis on improving hMSC growth ex vivo. Production of substrate independent, novel thin films is one potential tool for production of commercial viable hMSC expansion. Plasma polymerization allow controlled chemical optimisation of large scale surface areas in a substrate independent manner. Previous study shown that plasma polymerized Furfuryl Methacrylate (ppFMA) surfaces allowed primary fibroblast cells adhesion and proliferation. However, under some deposition conditions, particle aggregates formation was observed. These aggregates had the effect of disrupting cell attachment, despite being chemically indistinguishable from the underlying surface. Herein, hMSCs were cultured on ppFMA surfaces to determine their suitability for stem cell culture and observe the effect of particle aggregates on hMSC attachment and growth. Both metabolic and DNA quantification assays showed that surfaces with particle aggregates had lower numbers of attached cells and slower growth. Uniform surfaces without aggregates showed higher cell attachment and growth levels, which were comparable to Thermanox. Phenotypic analysis showed that there was no change to hMSCs phenotype after 7 & 14days of culture on uniform ppFMA surface. Further investigation using time-lapse image analysis indicated that particle aggregates reduced cell attachment by presenting a physically weak boundary layer, which was damaged by intracellular tension during cell spreading. ppFMA surface can provide a stable substrate independent hMSCs expansion interface that could be applied to larger scale bioreactors, beads or scaffolds.
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Affiliation(s)
- Hanieh Safizadeh Shirazi
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia.
| | - Nicholas Rogers
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia
| | - Andrew Michelmore
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia; School of Engineering, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
| | - Jason D Whittle
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia; School of Engineering, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
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23
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Kirby GTS, Mills SJ, Vandenpoel L, Pinxteren J, Ting A, Short RD, Cowin AJ, Michelmore A, Smith LE. Development of Advanced Dressings for the Delivery of Progenitor Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3445-3454. [PMID: 28068055 DOI: 10.1021/acsami.6b14725] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Culture surfaces that substantially reduce the degree of cell manipulation in the delivery of cell sheets to patients are described. These surfaces support the attachment, culture, and delivery of multipotent adult progenitor cells (MAPC). It was essential that the processes of attachment/detachment to the surface did not affect cell phenotype nor the function of the cultured cells. Both acid-based and amine-based surface coatings were generated from acrylic acid, propanoic acid, diaminopropane, and heptylamine precursors, respectively. While both functional groups supported cell attachment/detachment, amine coated surfaces gave optimal performance. X-ray photoelectron spectroscopy (XPS) showed that at a primary amine to carbon surface ratio of between 0.01 and 0.02, greater than 90% of attached cells were effectively transferred to a model wound bed. A dependence on primary amine concentration has not previously been reported. After 48 h of culture on the optimized amine surface, PCR, functional, and viability assays showed that MAPC retained their stem cell phenotype, full metabolic activity, and biological function. Consequently, in a proof of concept experiment, it was shown that this amine surface when coated onto a surgical dressing provides an effective and simple technology for the delivery of MAPC to murine dorsal excisional wounds, with MAPC delivery verified histologically. By optimizing for cell delivery using a combination of in vitro and in vivo techniques, we developed an effective surface for the delivery of MAPC in a clinically relevant format.
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Affiliation(s)
- Giles T S Kirby
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Stuart J Mills
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Liesbeth Vandenpoel
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- ReGenesys BVBA, Bio-Incubator Leuven , Gaston Geenslaan 1, 3001 Heverlee, Belgium
| | - Jef Pinxteren
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- ReGenesys BVBA, Bio-Incubator Leuven , Gaston Geenslaan 1, 3001 Heverlee, Belgium
| | - Anthony Ting
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Athersys, Inc. , Cleveland, Ohio 44115-2634, United States
| | - Robert D Short
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Allison J Cowin
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Andrew Michelmore
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
- School of Engineering, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Louise E Smith
- Cooperative Research Centre for Cell Therapy Manufacturing , North Terrace, Adelaide, South Australia 5000, Australia
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
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25
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Smith LE, Bryant C, Krasowska M, Cowin AJ, Whittle JD, MacNeil S, Short RD. Haptotatic Plasma Polymerized Surfaces for Rapid Tissue Regeneration and Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32675-32687. [PMID: 27934156 DOI: 10.1021/acsami.6b11320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Skin has a remarkable capacity for regeneration; however, with an ever aging population, there is a growing burden to the healthcare system from chronic wounds. Novel therapies are required to address the problems associated with nonhealing chronic wounds. Novel wound dressings that can encourage increased reepithelialization could help to reduce the burden of chronic wounds. A suite of chemically defined surfaces have been produced using plasma polymerization, and the ability of these surfaces to support the growth of primary human skin cells has been assessed. Additionally, the ability of these surfaces to modulate cell migration and morphology has also been investigated. Keratinocytes and endothelial cells were extremely sensitive to surface chemistry showing increased viability and migration with an increased number of carboxylic acid functional groups. Fibroblasts proved to be more tolerant to changes in surface chemistry; however, these cells migrated fastest over amine-functionalized surfaces. The novel combination of comprehensive chemical characterization coupled with the focus on cell migration provides a unique insight into how a material's physicochemical properties affect cell migration.
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Affiliation(s)
- Louise E Smith
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Christian Bryant
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
| | - Marta Krasowska
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
- School of Information Technology and Mathematical Sciences, University of South Australia , Adelaide, 5095, South Australia, Australia
| | - Allison J Cowin
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Jason D Whittle
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- School of Engineering, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Sheila MacNeil
- Kroto Research Institute, University of Sheffield , Sheffield S3 7HQ, South Yorkshire, United Kingdom
| | - Robert D Short
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
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26
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Akhavan B, Wise SG, Bilek MMM. Substrate-Regulated Growth of Plasma-Polymerized Films on Carbide-Forming Metals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10835-10843. [PMID: 27676094 DOI: 10.1021/acs.langmuir.6b02901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Although plasma polymerization is traditionally considered as a substrate-independent process, we present evidence that the propensity of a substrate to form carbide bonds regulates the growth mechanisms of plasma polymer (PP) films. The manner by which the first layers of PP films grow determines the adhesion and robustness of the film. Zirconium, titanium, and silicon substrates were used to study the early stages of PP film formation from a mixture of acetylene, nitrogen, and argon precursor gases. The correlation of initial growth mechanisms with the robustness of the films was evaluated through incubation of coated substrates in simulated body fluid (SBF) at 37° for 2 months. It was demonstrated that the excellent zirconium/titanium-PP film adhesion is linked to the formation of metallic carbide and oxycarbide bonds during the initial stages of film formation, where a 2D-like, layer-by-layer (Frank-van der Merwe) manner of growth was observed. On the contrary, the lower propensity of the silicon surface to form carbides leads to a 3D, island-like (Volmer-Weber) growth mode that creates a sponge-like interphase near the substrate, resulting in inferior adhesion and poor film stability in SBF. Our findings shed light on the growth mechanisms of the first layers of PP films and challenge the property of substrate independence typically attributed to plasma polymerized coatings.
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Affiliation(s)
- Behnam Akhavan
- School of Physics, University of Sydney , Sydney, New South Wales 2006, Australia
| | - Steven G Wise
- The Heart Research Institute , Sydney, New South Wales 2042, Australia
- Sydney Medical School, University of Sydney , Sydney, New South Wales 2006, Australia
| | - Marcela M M Bilek
- School of Physics, University of Sydney , Sydney, New South Wales 2006, Australia
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Abstract
Furfuryl methacrylate (FMA) is a promising precursor for producing polymers for biomedical and cell therapy applications. Herein, FMA plasma polymer coatings were prepared with different powers, deposition times, and flow rates. The plasma polymer coatings were characterized using atomic force microscopy (AFM), scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The results from AFM and SEM show the early growth of the coatings and the existence of particle aggregates on the surfaces. XPS results indicated no measureable chemical differences between the deposited films produced under different power and flow rate conditions. ToF-SIMS analysis demonstrated differing amounts of C5H5O (81 m/z) and C10H9O2 (161 m/z) species in the coatings which are related to the furan ring structure. Through judicious choice of plasma polymerization parameters, the quantity of the particle aggregates was reduced, and the fabricated plasma polymer coatings were chemically uniform and smooth. Primary human fibroblasts were cultured on FMA plasma polymer surfaces to determine the effect of surface chemical composition and the presence of particle aggregates on cell culture. Particle aggregates were shown to inhibit fibroblast attachment and proliferation.
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28
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Saboohi S, Coad BR, Michelmore A, Short RD, Griesser HJ. Hyperthermal Intact Molecular Ions Play Key Role in Retention of ATRP Surface Initiation Capability of Plasma Polymer Films from Ethyl α-Bromoisobutyrate. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16493-16502. [PMID: 27304927 DOI: 10.1021/acsami.6b04477] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a systematic study of the plasma polymerization of ethyl α-bromoisobutyrate (EBIB) to produce thin film coatings capable of serving as ATRP initiation surfaces, for which they must contain α-bromoisobutyryl functional groups. In the deposition of polymeric coatings by plasma polymerization there generally occurs considerable fragmentation of precursor ("monomer") molecules in the plasma; and the retention of larger structural elements is challenging, particularly when they are inherently chemically labile. Empirical principles such as low plasma power and low pressure are usually utilized. However, we show that the α-bromoisobutyryl structural moiety is labile in a plasma gas phase and in low pressure plasma conditions, below the collisional threshold, there is little retention. At higher pressure, in contrast, fragmentation of this structural motif appears to be reduced substantially, and coatings useful for ATRP initiation were obtained. Mass spectrometry analysis of the composition of the plasma phase revealed that the desired structural moiety can be retained through the plasma, if the plasma conditions are steered toward ions of the precursor molecule. Whereas at low pressure the plasma polymer assembles mainly from various neutral (radical) fragments, at higher pressure the deposition occurs from hyperthermal ions, among which the protonated intact molecular ion is the most abundant. At higher pressure, a substantial population of ions has low kinetic energy, leading to "soft landing" and thus less fragmentation. This study demonstrates that relatively complex structural motifs in precursor molecules can be retained in plasma polymerization if the chemical and physical processes occurring in the plasma phase are elucidated and controlled such that desirable larger structural elements play a key role in the film deposition.
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Affiliation(s)
- Solmaz Saboohi
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Bryan R Coad
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Andrew Michelmore
- School of Engineering, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Robert D Short
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Hans J Griesser
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
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29
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Akhavan B, Menges B, Förch R. Inhomogeneous Growth of Micrometer Thick Plasma Polymerized Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4792-4799. [PMID: 27111265 DOI: 10.1021/acs.langmuir.6b01050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Plasma polymerization is traditionally recognized as a homogeneous film-forming technique. It is nevertheless reasonable to ask whether micrometer thick plasma polymerized structures are really homogeneous across the film thickness. Studying the properties of the interfacial, near-the-substrate (NTS) region in plasma polymer films represents particular experimental challenges due to the inaccessibility of the buried layers. In this investigation, a novel non-destructive approach has been utilized to evaluate the homogeneity of plasma polymerized acrylic acid (PPAc) and 1,7-octadiene (PPOD) films in a single measurement. Studying the variations of refractive index throughout the depth of the films was facilitated by a home-built surface plasmon resonance (SPR)/optical waveguide (OWG) spectroscopy setup. It has been shown that the NTS layer of both PPAc and PPOD films exhibits a significantly lower refractive index than the bulk of the film that is believed to indicate a higher concentration of internal voids. Our results provide new insights into the growth mechanisms of plasma polymer films and challenge the traditional view that considers plasma polymers as homogeneous and continuous structures.
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Affiliation(s)
- Behnam Akhavan
- School of Physics, A28, University of Sydney , Sydney, NSW 2006, Australia
- School of Engineering, University of South Australia , Mawson Lakes, SA 5095, Australia
| | - Bernhard Menges
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Renate Förch
- Fraunhofer ICT-IMM, Carl-Zeiss-Str. 18-20, Mainz 55129, Germany
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30
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Wen J, Jiang F, Yeh CK, Sun Y. Controlling fungal biofilms with functional drug delivery denture biomaterials. Colloids Surf B Biointerfaces 2016; 140:19-27. [PMID: 26731194 PMCID: PMC5706542 DOI: 10.1016/j.colsurfb.2015.12.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/03/2015] [Accepted: 12/14/2015] [Indexed: 11/18/2022]
Abstract
Candida-associated denture stomatitis (CADS), caused by colonization and biofilm-formation of Candida species on denture surfaces, is a significant clinical concern. We show here that modification of conventional denture materials with functional groups can significantly increase drug binding capacity and control drug release rate of the resulting denture materials for potentially managing CADS. In our approach, poly(methyl methacrylate) (PMMA)-based denture resins were surface grafted with three kinds of polymers, poly(1-vinyl-2-pyrrolidinone) (PNVP), poly(methacrylic acid) (PMAA), and poly(2-hydroxyethyl methacrylate) (PHEMA), through plasma-initiated grafting polymerization. With a grafting yield as low as 2 wt%, the three classes of new functionalized denture materials showed significantly higher drug binding capacities toward miconazole, a widely used antifungal drug, than the original PMMA denture resin control, leading to sustained drug release and potent biofilm-controlling effects against Candida. Among the three classes of functionalized denture materials, PNVP-grafted resin provided the highest miconazole binding capability and the most powerful antifungal and biofilm-controlling activities. Drug binding mechanisms were studied. These results demonstrated the importance of specific interactions between drug molecules and functional groups on biomaterials, shedding lights on future design of CADS-managing denture materials and other related devices for controlled drug delivery.
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Affiliation(s)
- Jianchuan Wen
- Department of Chemistry, University of Massachusetts, Lowell, MA 01854, USA
| | - Fuguang Jiang
- Department of Chemistry, University of Massachusetts, Lowell, MA 01854, USA
| | - Chih-Ko Yeh
- Geriatric Research, Education and Clinical Center, Audie L. Murphy Division, South Texas Veterans Health Care System, San Antonio, TX 78229, USA; Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Yuyu Sun
- Department of Chemistry, University of Massachusetts, Lowell, MA 01854, USA.
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31
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Khelifa F, Ershov S, Habibi Y, Snyders R, Dubois P. Free-Radical-Induced Grafting from Plasma Polymer Surfaces. Chem Rev 2016; 116:3975-4005. [PMID: 26943005 DOI: 10.1021/acs.chemrev.5b00634] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With the advances in science and engineering in the second part of the 20th century, emerging plasma-based technologies continuously find increasing applications in the domain of polymer chemistry, among others. Plasma technologies are predominantly used in two different ways: for the treatment of polymer substrates by a reactive or inert gas aiming at a specific surface functionalization or for the synthesis of a plasma polymer with a unique set of properties from an organic or mixed organic-inorganic precursor. Plasma polymer films (PPFs), often deposited by plasma-enhanced chemical vapor deposition (PECVD), currently attract a great deal of attention. Such films are widely used in various fields for the coating of solid substrates, including membranes, semiconductors, metals, textiles, and polymers, because of a combination of interesting properties such as excellent adhesion, highly cross-linked structures, and the possibility of tuning properties by simply varying the precursor and/or the synthesis parameters. Among the many appealing features of plasma-synthesized and -treated polymers, a highly reactive surface, rich in free radicals arising from deposition/treatment specifics, offers a particular advantage. When handled carefully, these reactive free radicals open doors to the controllable surface functionalization of materials without affecting their bulk properties. The goal of this review is to illustrate the increasing application of plasma-based technologies for tuning the surface properties of polymers, principally through free-radical chemistry.
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Affiliation(s)
- Farid Khelifa
- University of Mons (UMONS) , Institute of Research in Science and Engineering of Materials, Place du Parc, 23, 7000 Mons, Belgium
| | - Sergey Ershov
- University of Mons (UMONS) , Institute of Research in Science and Engineering of Materials, Place du Parc, 23, 7000 Mons, Belgium.,Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST) , Rue du Brill 41, 4422 Belvaux, Luxembourg
| | - Youssef Habibi
- Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST) , Rue du Brill 41, 4422 Belvaux, Luxembourg
| | - Rony Snyders
- University of Mons (UMONS) , Institute of Research in Science and Engineering of Materials, Place du Parc, 23, 7000 Mons, Belgium
| | - Philippe Dubois
- University of Mons (UMONS) , Institute of Research in Science and Engineering of Materials, Place du Parc, 23, 7000 Mons, Belgium.,Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST) , Rue du Brill 41, 4422 Belvaux, Luxembourg
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32
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Nam E, Wong EHH, Tan S, Guntari SN, Fu Q, Kim J, Delalat B, Blencowe A, Qiao GG. Spatial-controlled nanoengineered films prepared via rapid catalyst induced cross-linking. Polym Chem 2016. [DOI: 10.1039/c6py00530f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Puliyalil H, Filipič G, Kovač J, Mozetič M, Thomas S, Cvelbar U. Tackling chemical etching and its mechanisms of polyphenolic composites in various reactive low temperature plasmas. RSC Adv 2016. [DOI: 10.1039/c6ra15923k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
We report a systematic study on the selective polymer composite etching and unravelling the mechanisms in various RF gas plasmas.
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Affiliation(s)
- H. Puliyalil
- Jozef Stefan Institute
- 1000 Ljubljana
- Slovenia
- Jozef Stefan International Postgraduate School
- 1000 Ljubljana
| | - G. Filipič
- Jozef Stefan Institute
- 1000 Ljubljana
- Slovenia
| | - J. Kovač
- Jozef Stefan Institute
- 1000 Ljubljana
- Slovenia
- Jozef Stefan International Postgraduate School
- 1000 Ljubljana
| | - M. Mozetič
- Jozef Stefan Institute
- 1000 Ljubljana
- Slovenia
- Jozef Stefan International Postgraduate School
- 1000 Ljubljana
| | - S. Thomas
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
| | - U. Cvelbar
- Jozef Stefan Institute
- 1000 Ljubljana
- Slovenia
- Jozef Stefan International Postgraduate School
- 1000 Ljubljana
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34
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Ryssy J, Prioste-Amaral E, Assuncao DFN, Rogers N, Kirby GTS, Smith LE, Michelmore A. Chemical and physical processes in the retention of functional groups in plasma polymers studied by plasma phase mass spectroscopy. Phys Chem Chem Phys 2016; 18:4496-504. [DOI: 10.1039/c5cp05850c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Retention of functional groups in plasma polymers depend on plasma chemistry and physical surface processes.
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Affiliation(s)
- Joonas Ryssy
- School of Information Technology and Mathematical Sciences
- University of South Australia
- Mawson Lakes
- Australia
| | - Eloni Prioste-Amaral
- Department of Industrial Engineering
- Universidade Federal de Sao Carlos
- Sao Paulo
- Brazil
| | - Daniela F. N. Assuncao
- Department of Materials Engineering
- Centro Federal de Educacao Tecnologica de Minas Gerais
- Belo Horizonte
- Brazil
| | - Nicholas Rogers
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
- Cooperative Research Centre for Cell Therapy Manufacturing
| | - Giles T. S. Kirby
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
- Cooperative Research Centre for Cell Therapy Manufacturing
| | - Louise E. Smith
- Cooperative Research Centre for Cell Therapy Manufacturing
- University of South Australia
- Adelaide
- Australia
- School of Engineering
| | - Andrew Michelmore
- Cooperative Research Centre for Cell Therapy Manufacturing
- University of South Australia
- Adelaide
- Australia
- School of Engineering
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Saboohi S, Jasieniak M, Coad BR, Griesser HJ, Short RD, Michelmore A. Comparison of Plasma Polymerization under Collisional and Collision-Less Pressure Regimes. J Phys Chem B 2015; 119:15359-69. [PMID: 26567805 DOI: 10.1021/acs.jpcb.5b07309] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
While plasma polymerization is used extensively to fabricate functionalized surfaces, the processes leading to plasma polymer growth are not yet completely understood. Thus, reproducing processes in different reactors has remained problematic, which hinders industrial uptake and research progress. Here we examine the crucial role pressure plays in the physical and chemical processes in the plasma phase, in interactions at surfaces in contact with the plasma phase, and how this affects the chemistry of the resulting plasma polymer films using ethanol as the gas precursor. Visual inspection of the plasma reveals a change from intense homogeneous plasma at low pressure to lower intensity bulk plasma at high pressure, but with increased intensity near the walls of the chamber. It is demonstrated that this occurs at the transition from a collision-less to a collisional plasma sheath, which in turn increases ion and energy flux to surfaces at constant RF power. Surface analysis of the resulting plasma polymer films show that increasing the pressure results in increased incorporation of oxygen and lower cross-linking, parameters which are critical to film performance. These results and insights help to explain the considerable differences in plasma polymer properties observed by different research groups using nominally similar processes.
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Affiliation(s)
- Solmaz Saboohi
- Mawson Institute, and ‡School of Engineering, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Australia 5095
| | - Marek Jasieniak
- Mawson Institute, and ‡School of Engineering, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Australia 5095
| | - Bryan R Coad
- Mawson Institute, and ‡School of Engineering, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Australia 5095
| | - Hans J Griesser
- Mawson Institute, and ‡School of Engineering, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Australia 5095
| | - Robert D Short
- Mawson Institute, and ‡School of Engineering, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Australia 5095
| | - Andrew Michelmore
- Mawson Institute, and ‡School of Engineering, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Australia 5095
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36
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Bachhuka A, Christo SN, Cavallaro A, Diener KR, Mierczynska A, Smith LE, Marian R, Manavis J, Hayball JD, Vasilev K. Hybrid core/shell microparticles and their use for understanding biological processes. J Colloid Interface Sci 2015; 457:9-17. [DOI: 10.1016/j.jcis.2015.06.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 06/23/2015] [Accepted: 06/25/2015] [Indexed: 11/27/2022]
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37
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Bachhuka A, Hayball J, Smith LE, Vasilev K. Effect of Surface Chemical Functionalities on Collagen Deposition by Primary Human Dermal Fibroblasts. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23767-23775. [PMID: 26457649 DOI: 10.1021/acsami.5b08249] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Surface modification has been identified as an important technique that could improve the response of the body to implanted medical devices. Collagen production by fibroblasts is known to play a vital role in wound healing and device fibrous encapsulation. However, how surface chemistry affects collagen I and III deposition by these cells has not been systematically studied. Here, we report how surface chemistry influences the deposition of collagen I and III by primary human dermal fibroblasts. Amine (NH3), carboxyl acid (COOH), and hydrocarbon (CH3) surfaces were generated by plasma deposition. This is a practically relevant tool to deposit a functional coating on any type of substrate material. We show that fibroblasts adhere better and proliferate faster on amine-rich surfaces. In addition, the initial collagen I and III production is greater on this type of coating. These data indicates that surface modification can be a promising route for modulating the rate and level of fibrous encapsulation and may be useful in informing the design of implantable biomedical devices to produce more predictable clinical outcomes.
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Affiliation(s)
| | - John Hayball
- Experimental Therapeutics Laboratory, Sansom Institute and Hanson Institute, School of Pharmacy and Medical Science, University of South Australia , Adelaide, South Australia 5000, Australia
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38
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Brioude MM, Roucoules V, Haidara H, Vonna L, Laborie MP. Role of Cellulose Nanocrystals on the Microstructure of Maleic Anhydride Plasma Polymer Thin Films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14079-14088. [PMID: 26035334 DOI: 10.1021/acsami.5b03302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recently, it was shown that the microstructure of a maleic anhydride plasma polymer (MAPP) could be tailored ab initio by adjusting the plasma process parameters. In this work, we aim to investigate the ability of cellulose nanocrystals (CNCs) to induce topographical structuration. Thus, a new approach was designed based on the deposition of MAPP on CNCs model surfaces. The nanocellulosic surfaces were produced by spin-coating the CNC suspension on a silicon wafer substrate and on a hydrophobic silicon wafer substrate patterned with circular hydrophilic microsized domains (diameter of 86.9 ± 4.9 μm), resulting in different degrees of CNC aggregation. By depositing the MAPP over these surfaces, it was possible to observe that the surface fraction of nanostructures increased from 20% to 35%. This observation suggests that CNCs can act as nucleation points resulting in more structures, although a critical density of the CNCs is required.
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Affiliation(s)
- Michel M Brioude
- †Chair of Forest Biomaterials, Faculty of Environment and Natural Resources, University of Freiburg, Werthmannstrasse 6, Freiburg 79098, Germany
- ‡Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Strasse 21, Freiburg 79104, Germany
| | - Vincent Roucoules
- §Institut de Science de Matériaux de Mulhouse CNRS UMR7361, Université de Haute-Alsace, 15 rue Jean Starcky, PB 2488, Mulhouse Cedex 68057, France
| | - Hamidou Haidara
- §Institut de Science de Matériaux de Mulhouse CNRS UMR7361, Université de Haute-Alsace, 15 rue Jean Starcky, PB 2488, Mulhouse Cedex 68057, France
| | - Laurent Vonna
- §Institut de Science de Matériaux de Mulhouse CNRS UMR7361, Université de Haute-Alsace, 15 rue Jean Starcky, PB 2488, Mulhouse Cedex 68057, France
| | - Marie-Pierre Laborie
- †Chair of Forest Biomaterials, Faculty of Environment and Natural Resources, University of Freiburg, Werthmannstrasse 6, Freiburg 79098, Germany
- ‡Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Strasse 21, Freiburg 79104, Germany
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39
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Qi P, Yang Y, Xiong K, Wang J, Tu Q, Yang Z, Wang J, Chen J, Huang N. Multifunctional Plasma-Polymerized Film: Toward Better Anticorrosion Property, Enhanced Cellular Growth Ability, and Attenuated Inflammatory and Histological Responses. ACS Biomater Sci Eng 2015; 1:513-524. [DOI: 10.1021/ab5001595] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pengkai Qi
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Ying Yang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Kaiqin Xiong
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Juan Wang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Qiufen Tu
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhilu Yang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Jin Wang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Junying Chen
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Nan Huang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
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40
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Bazaka K, Jacob MV, Chrzanowski W, Ostrikov K. Anti-bacterial surfaces: natural agents, mechanisms of action, and plasma surface modification. RSC Adv 2015. [DOI: 10.1039/c4ra17244b] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This article reviews antibacterial surface strategies based on reactive plasma chemistry, focusing on how plasma-assisted processing of natural antimicrobial agents can produce antifouling and antibacterial materials for biomedical devices.
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Affiliation(s)
- K. Bazaka
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
| | - M. V. Jacob
- College of Science, Technology and Engineering
- James Cook University
- Townsville
- Australia
| | | | - K. Ostrikov
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
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41
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Ershov S, Khelifa F, Druart ME, Habibi Y, Olivier MG, Snyders R, Dubois P. Free radical-induced grafting from plasma polymers for the synthesis of thin barrier coatings. RSC Adv 2015. [DOI: 10.1039/c4ra16424e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Enhanced barrier properties of Al substrate coated by plasma polymer film grafted with radical-induced polymer.
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Affiliation(s)
- S. Ershov
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
- Material Research and Technology (MRT) Department
| | - F. Khelifa
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
| | - M.-E. Druart
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
| | - Y. Habibi
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
- Department of Advanced Materials and Structures (AMS)
| | - M.-G. Olivier
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
| | - R. Snyders
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
| | - P. Dubois
- University of Mons
- Institute of Research in Science and Engineering of Materials
- 7000 Mons
- Belgium
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42
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Qi P, Yan W, Yang Y, Li Y, Fan Y, Chen J, Yang Z, Tu Q, Huang N. Immobilization of DNA aptamers via plasma polymerized allylamine film to construct an endothelial progenitor cell-capture surface. Colloids Surf B Biointerfaces 2014; 126:70-9. [PMID: 25575347 DOI: 10.1016/j.colsurfb.2014.12.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 11/25/2014] [Accepted: 12/01/2014] [Indexed: 02/06/2023]
Abstract
The endothelial progenitor cells (EPCs) capture stent has drawn increasing attentions and become one of the most promising concepts for the next generation vascular stent. In this regard, it is of great significance to immobilize a molecule with the ability to bind EPC for rapid in vivo endothelialization with high specificity. In this work, a facile two-step method aimed at constructing a coating with specific EPC capturing aptamers is reported. The processes involves as the first-step deposition of plasma polymerized allylamine (PPAam) on a substrate to introduce amine groups, followed by the electrostatic adsorption of a 34 bases single strand DNA sequence to the PPAam surface as a second step (PPAam-DNA). Grazing incidence attenuated total reflection Fourier transform infrared spectroscopy (GATR-FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed the successful immobilization of the aptamers. Quartz crystal microbalance with dissipation (QCM-D) real time monitoring result shows that about 175 ng/cm(2) aptamers were conjugated onto the PPAam surface. The interactions between the modified surfaces and human umbilical vein endothelial cells (ECs), smooth muscle cells (SMCs), and murine induced EPCs derived from mesenchymal stem cells (MSCs) were also investigated. It was demonstrated that PPAam-DNA samples could capture more EPCs, and present a cellular friendly surface for the proliferation of both EPCs and ECs but no effect on the hyperplasia of SMCs. Also, the co-culture results of 3 types of cells confirmed that the aptamer could specifically bond EPCs rather than ECs and SMCs, suggesting the competitive adhesion advantage of EPCs to ECs and SMCs. These data demonstrate that the EPC aptamer has large potential for designing an EPC captured stent and other vascular grafts with targeted in situ endothelialization.
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Affiliation(s)
- Pengkai Qi
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Wei Yan
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Ying Yang
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yalong Li
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Yi Fan
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Junying Chen
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhilu Yang
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Qiufen Tu
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China.
| | - Nan Huang
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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43
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Zuber AA, Robinson DE, Short RD, Steele DA, Whittle JD. Development of a surface to increase retinal pigment epithelial cell (ARPE-19) proliferation under reduced serum conditions. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1367-1373. [PMID: 24493476 DOI: 10.1007/s10856-014-5163-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 01/23/2014] [Indexed: 06/03/2023]
Abstract
Age related macular degeneration of the eye is brought about by damage to the retinal pigment epithelium (RPE) and is a major cause of adult blindness. One potential treatment method is transplantation of RPE cells grown in vitro. Maintaining RPE cell viability and physiological function in vitro is a challenge, and this must also be achieved using materials that can be subsequently used to deliver an intact cell sheet into the eye. In this paper, plasma polymerisation has been used to develop a chemically modified surface for maintaining RPE cells in vitro. Multiwell plates modified with a plasma copolymer of allylamine and octadiene maintained RPE cell growth at a level similar to that of TCPS. However, the addition of bound glycosaminoglycans (GAGs) to the plasma polymerised surface significantly enhanced RPE proliferation. Simply adding GAG to the culture media had no positive effect. It is shown that a combination of plasma polymer and GAG is a promising method for developing suitable surfaces for cell growth and delivery, that can be applied to any substrate material.
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Affiliation(s)
- Agnieszka A Zuber
- Mawson Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
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44
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Gross-Kosche P, Low SP, Guo R, Steele DA, Michelmore A. Deposition of nonfouling plasma polymers to a thermoplastic silicone elastomer for microfluidic and biomedical applications. J Appl Polym Sci 2014. [DOI: 10.1002/app.40500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Petra Gross-Kosche
- School of Applied Chemistry, Reutlingen University; 72762 Reutlingen Germany
| | - Suet P. Low
- Mawson Institute, University of South Australia; Mawson Lakes SA 5095 Adelaide Australia
| | - Rui Guo
- School of Pharmacy; Nottingham University, University Park; Nottingham NG7 2RD United Kingdom
| | - David A. Steele
- Mawson Institute, University of South Australia; Mawson Lakes SA 5095 Adelaide Australia
| | - Andrew Michelmore
- Mawson Institute, University of South Australia; Mawson Lakes SA 5095 Adelaide Australia
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45
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Nam E, Kim J, Guntari SN, Seyler H, Fu Q, Wong EHH, Blencowe A, Jones DJ, Caruso F, Qiao GG. Continuous assembly of polymers via solid phase reactions. Chem Sci 2014. [DOI: 10.1039/c4sc01240b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The formation of cross-linked polymer films, with tunable thickness, proceeds directionally from the substrate surface by controlled polymerization in the solid state.
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Affiliation(s)
- Eunhyung Nam
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
| | - Jinguk Kim
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
| | - Stefanie N. Guntari
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
| | - Helga Seyler
- School of Chemistry
- Bio21 Institute
- The University of Melbourne
- Parkville, Australia
| | - Qiang Fu
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
| | - Edgar H. H. Wong
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
| | - Anton Blencowe
- Mawson Institute
- Division of Information Technology
- Engineering and the Environment
- University of South Australia
- Mawson Lakes, Australia
| | - David J. Jones
- School of Chemistry
- Bio21 Institute
- The University of Melbourne
- Parkville, Australia
| | - Frank Caruso
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
| | - Greg G. Qiao
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville, Australia
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