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Tsou CH, Yao WH, Hung WS, Suen MC, De Guzman M, Chen J, Tsou CY, Wang RY, Chen JC, Wu CS. Innovative Plasma Process of Grafting Methyl Diallyl Ammonium Salt onto Polypropylene to Impart Antibacterial and Hydrophilic Surface Properties. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04693] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chi-Hui Tsou
- Material
Corrosion and Protection Key Laboratory of Sichuan Province, College
of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Wei-Hua Yao
- Department
of Materials and Textiles, Oriental Institute of Technology, Pan-Chiao 22064, Taiwan (R.O.C)
| | - Wei-Song Hung
- Graduate
Institute of Applied Science and Technology, Department of Materials
Science and Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan (R.O.C)
| | - Maw-Cherng Suen
- Department
of Fashion Business Administration, Taishan, Lee-Ming Institute of Technology, New Taipei City 24305, Taiwan (R.O.C.)
| | - Manuel De Guzman
- Material
Corrosion and Protection Key Laboratory of Sichuan Province, College
of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Jian Chen
- Material
Corrosion and Protection Key Laboratory of Sichuan Province, College
of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Chih-Yuan Tsou
- Graduate
Institute of Applied Science and Technology, Department of Materials
Science and Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan (R.O.C)
| | - Ruo Yao Wang
- Graduate
Institute of Applied Science and Technology, Department of Materials
Science and Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan (R.O.C)
| | - Jui-Chin Chen
- Department
of Materials and Textiles, Oriental Institute of Technology, Pan-Chiao 22064, Taiwan (R.O.C)
| | - Chin-San Wu
- Department
of Applied Cosmetology, Kao Yuan University, Kaohsiung 82101, Taiwan (R.O.C.)
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Griffin M, Ibrahim A, Seifalian A, Butler P, Kalaskar D, Ferretti P. Chemical group-dependent plasma polymerisation preferentially directs adipose stem cell differentiation towards osteogenic or chondrogenic lineages. Acta Biomater 2017; 50:450-461. [PMID: 27956359 PMCID: PMC5331891 DOI: 10.1016/j.actbio.2016.12.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/25/2016] [Accepted: 12/07/2016] [Indexed: 12/17/2022]
Abstract
Human adipose derived stem cells (ADSCs) are being explored for the repair of craniofacial defects due to their multi-differentiation potential and ease of isolation and expansion. Crucial to using ADSCs for craniofacial repair is the availability of materials with appropriate biomechanical properties that can support their differentiation into bone and cartilage. We tested the hypothesis that different modifications of chemical groups on the surface of a nanocomposite polymer could increase human ADSC adhesion and selectively enhance their osteogenic and chondrogenic differentiation. We show that the COOH modification significantly promoted initial cell adhesion and proliferation over 14 days compared to NH2 surfaces. Expression of focal adhesion kinase and vinculin was enhanced after plasma surface polymerisation at 24 h. The COOH modification significantly enhanced chondrogenic differentiation as indicated by up-regulation of aggrecan and collagen II transcripts. In contrast, NH2 group functionalised scaffolds promoted osteogenic differentiation with significantly enhanced expression of collagen I, alkaline phosphatase and osteocalcin both at the gene and protein level. Finally, chorioallantoic membrane grafting demonstrated that both NH2 and COOH functionalised scaffolds seeded with ADSCs were biocompatible and supported vessel ingrowth apparently to a greater degree than unmodified scaffolds. In summary, our study shows the ability to direct ADSC chondrogenic and osteogenic differentiation by deposition of different chemical groups through plasma surface polymerisation. Hence this approach could be used to selectively enhance bone or cartilage formation before implantation in vivo to repair skeletal defects. Statement of Significance Human adipose derived stem cells (hADSCs) are an exciting stem cell source for regenerative medicine due to their plentiful supply and ease of isolation. However, the optimal environmental cues to direct stem cells towards certain lineages change have to has not been identified. We have shown that by modifying the surface of the scaffold with specific chemical groups using plasma surface polymerisation techniques we can control ADSCs differentiation. This study shows that ADSCs can be differentiated towards osteogenic and chondrogenic lineages on amine (NH2) and carboxyl (COOH) modified scaffolds respectively. Plasma polymerisation can be easily applied to other biomaterial surfaces to direct stem cell differentiation for the regeneration of bone and cartilage.
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Hegemann D, Lorusso E, Butron-Garcia MI, Blanchard NE, Rupper P, Favia P, Heuberger M, Vandenbossche M. Suppression of Hydrophobic Recovery by Plasma Polymer Films with Vertical Chemical Gradients. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:651-654. [PMID: 26716609 DOI: 10.1021/acs.langmuir.5b03913] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Vertical chemical gradients extending over a few nanometers were explored. The gradients are based on plasma-polymerized oxygen-containing ethylene (ppOEt) films. Using plasma conditions with low CO2/C2H4 ratio and high energy input, cross-linked films were deposited as base layer, while increasing CO2 and lowering energy input resulted in less cross-linked yet highly functional films as applied as top layer. Aging studies indicate that, in particular, for very thin gradient structures, the cross-linked subsurface zone effectively hinders reorientation of the surface functional groups, thus restricting hydrophobic recovery and oxidation effects.
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Affiliation(s)
- Dirk Hegemann
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Emanuela Lorusso
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Department of Chemistry, University of Bari , Via Orabona 4, 70126 Bari, Italy
| | - Maria-Isabel Butron-Garcia
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Noémi E Blanchard
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Patrick Rupper
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Pietro Favia
- Department of Chemistry, University of Bari , Via Orabona 4, 70126 Bari, Italy
| | - Manfred Heuberger
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Marianne Vandenbossche
- Laboratory of Advanced Fibers, Swiss Federal Laboratories for Materials Science and Technology, Empa , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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Simaite A, Tondu B, Souères P, Bergaud C. Hybrid PVDF/PVDF-graft-PEGMA Membranes for Improved Interface Strength and Lifetime of PEDOT:PSS/PVDF/Ionic Liquid Actuators. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19966-19977. [PMID: 26289948 DOI: 10.1021/acsami.5b04578] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
UNLABELLED The exploitation of soft conducting polymer-based actuators suffers from two main shortcomings: their short life cycle and the reproducibility of the fabrication techniques. The short life cycle usually results from the delamination of the components due to stresses at the interface during the actuation. In this work, to achieve strong adhesion to poly(3,4- ethylenedioxythiophene) poly(styrenesulfonate) ( PEDOT PSS) electrodes, the wetting properties of the surface of a polyvinylidene fluoride (PVDF) membrane are improved using argon-plasma-induced surface polymerization of poly(ethylene glycol) monomethyl ether methacrylate (PEGMA). Hybrid membranes are created with hydrophilic PVDF-graft-PEGMA outer surfaces and hydrophobic bulk. The width of each layer is controlled by spray coating, as it allows for the deposition of the reaction precursor to a certain depth. Subsequently, a PEDOT PSS water solution fills the pores of the functionalized part of the membrane and a mixing layer between PEDOT PSS and PVDF is created. We also show that PVDF-graft-PEGMA copolymers play an important role in binding the membrane to the electrodes and that direct mechanical interlocking in the pores can further improve the adhesion. Finally, PEDOT PSS/PVDF-graft-PEGMA/PEDOT:PSS actuators are made by simple solution casting. They are capable of producing high strains of 0.6% and show no signs of delamination after more than 150 h or 10(4) actuation cycles. Furthermore, the preservation of the hydrophobic membrane in between two PEDOT PSS layers increases the resistance between them from 0.36 Ω to 0.16 MΩ, thus drastically modifying the power dissipation of the actuators.
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Affiliation(s)
- Aiva Simaite
- CNRS, Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), 7 avenue du Colonel Roche, F-31031, Toulouse, France
- Université de Toulouse , Institut National des Sciences Appliquées (INSA), Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), F-31400, Toulouse, France
| | - Bertrand Tondu
- CNRS, Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), 7 avenue du Colonel Roche, F-31031, Toulouse, France
- Université de Toulouse , Institut National des Sciences Appliquées (INSA), Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), F-31400, Toulouse, France
| | - Philippe Souères
- CNRS, Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), 7 avenue du Colonel Roche, F-31031, Toulouse, France
- Université de Toulouse , Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), F-31400, Toulouse, France
| | - Christian Bergaud
- CNRS, Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), 7 avenue du Colonel Roche, F-31031, Toulouse, France
- Université de Toulouse , Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS), F-31400, Toulouse, France
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Gandhiraman RP, Nordlund D, Jayan V, Meyyappan M, Koehne JE. Scalable low-cost fabrication of disposable paper sensors for DNA detection. ACS APPLIED MATERIALS & INTERFACES 2014; 6:22751-22760. [PMID: 25423585 PMCID: PMC4278686 DOI: 10.1021/am5069003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 11/25/2014] [Indexed: 06/04/2023]
Abstract
Controlled integration of features that enhance the analytical performance of a sensor chip is a challenging task in the development of paper sensors. A critical issue in the fabrication of low-cost biosensor chips is the activation of the device surface in a reliable and controllable manner compatible with large-scale production. Here, we report stable, well-adherent, and repeatable site-selective deposition of bioreactive amine functionalities and biorepellant polyethylene glycol-like (PEG) functionalities on paper sensors by aerosol-assisted, atmospheric-pressure, plasma-enhanced chemical vapor deposition. This approach requires only 20 s of deposition time, compared to previous reports on cellulose functionalization, which takes hours. A detailed analysis of the near-edge X-ray absorption fine structure (NEXAFS) and its sensitivity to the local electronic structure of the carbon and nitrogen functionalities. σ*, π*, and Rydberg transitions in C and N K-edges are presented. Application of the plasma-processed paper sensors in DNA detection is also demonstrated.
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Affiliation(s)
- Ram P. Gandhiraman
- NASA Ames Research Center, Moffett
Field, California 94035, United States
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National
Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Vivek Jayan
- NASA Ames Research Center, Moffett
Field, California 94035, United States
| | - M. Meyyappan
- NASA Ames Research Center, Moffett
Field, California 94035, United States
| | - Jessica E. Koehne
- NASA Ames Research Center, Moffett
Field, California 94035, United States
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Zhao Z, He Y, Yang H, Qu X, Lu X, Luo J. Aminosilanization nanoadhesive layer for nanoelectric circuits with porous ultralow dielectric film. ACS APPLIED MATERIALS & INTERFACES 2013; 5:6097-6107. [PMID: 23749192 DOI: 10.1021/am4009192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An ultrathin layer is investigated for its potential application of replacing conventional diffusion barriers and promoting interface adhesion for nanoelectric circuits with porous ultralow dielectrics. The porous ultralow dielectric (k ≈ 2.5) substrate is silanized by 3-aminopropyltrimethoxysilane (APTMS) to form the nanoadhesive layer by performing oxygen plasma modification and tailoring the silanization conditions appropriately. The high primary amine content is obtained in favor of strong interaction between amino groups and copper. And the results of leakage current measurements of metal-oxide-semiconductor capacitor structure demonstrate that the aminosilanization nanoadhesive layer can block copper diffusion effectively and guarantee the performance of devices. Furthermore, the results of four-point bending tests indicate that the nanoadhesive layer with monolayer structure can provide the satisfactory interface toughness up to 6.7 ± 0.5 J/m(2) for Cu/ultralow-k interface. Additionally, an annealing-enhanced interface toughness effect occurs because of the formation of Cu-N bonding and siloxane bridges below 500 °C. However, the interface is weakened on account of the oxidization of amines and copper as well as the breaking of Cu-N bonding above 500 °C. It is also found that APTMS nanoadhesive layer with multilayer structure provides relatively low interface toughness compared with monolayer structure, which is mainly correlated to the breaking of interlayer hydrogen bonding.
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Affiliation(s)
- Zhongkai Zhao
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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Petersen J, Becker C, Fouquet T, Addiego F, Toniazzo V, Dinia A, Ruch D. Nano-ordered thin films achieved by soft atmospheric plasma polymerization. RSC Adv 2013. [DOI: 10.1039/c2ra21833j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Petersen J, Michel M, Toniazzo V, Ruch D, Schmerber G, Ihiawakrim D, Muller D, Dinia A, Ball V. Atmospheric plasma polymer films as templates for inorganic synthesis to yield functional hybrid coatings. RSC Adv 2012. [DOI: 10.1039/c2ra21028b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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