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Raut SA, Vinx N, Tromont D, Leclère P, Cossement D, Snyders R, Thiry D. Unlocking the Potential of Liquid Plasma Polymer Films: Characterizing Aging Effects and Their Impact on the Wrinkling Phenomenon. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14633-14640. [PMID: 38970486 DOI: 10.1021/acs.langmuir.4c01552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/08/2024]
Abstract
Here, we present the study of the intricate dynamics between the physicochemical properties of liquid propanethiol plasma polymer films (PPFs) and the formation of wrinkles in PPF/Al bilayers. The study investigates the effect of liquid PPF aging in the air before top Al layer deposition by magnetron sputtering on the wrinkling phenomenon for 4 days. Thanks to atomic force microscopy, the wrinkle dimensions were found to decrease by approximately 55% in amplitude and 66% in wavelength, correlated with an increase in the viscosity of the PPF over the aging duration (i.e., from less than 107 to 1010 Pa·s). This behavior is not linked to alterations in cross-linking degree as evidenced by time-of-flight secondary ion mass spectrometry experiments but rather to network densification driven by the inherent molecular chain mobility due to the viscous state of the PPF. X-ray photoelectron spectroscopy measurements emphasizing the absence of oxidation of the PPF over the aging duration support this, revealing a unique aging mechanism distinct from other plasma polymer families. Overall, this study offers valuable insights into the design and application of mechanically responsive PPFs involved in bilayer systems, paving the way for advancements in nanotechnology and related fields.
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Affiliation(s)
- Suyog A Raut
- Chimie des Interactions Plasma-Surface (ChIPS), Université de Mons, 20 Place du Parc, B-7000 Mons, Belgium
| | - Nathan Vinx
- Chimie des Interactions Plasma-Surface (ChIPS), Université de Mons, 20 Place du Parc, B-7000 Mons, Belgium
| | - David Tromont
- Chimie des Interactions Plasma-Surface (ChIPS), Université de Mons, 20 Place du Parc, B-7000 Mons, Belgium
| | - Philippe Leclère
- Laboratory for Physics of Nanomaterials and Energy (LPNE), Research Institute for Materials Science and Engineering, Université de Mons (UMONS), 7000 Mons, Belgium
| | - Damien Cossement
- Materia Nova Research Center, Parc Initialis, B-7000 Mons, Belgium
| | - Rony Snyders
- Chimie des Interactions Plasma-Surface (ChIPS), Université de Mons, 20 Place du Parc, B-7000 Mons, Belgium
- Materia Nova Research Center, Parc Initialis, B-7000 Mons, Belgium
| | - Damien Thiry
- Chimie des Interactions Plasma-Surface (ChIPS), Université de Mons, 20 Place du Parc, B-7000 Mons, Belgium
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Wang Y, Yi Z, Xie L, Mao Y, Ji W, Liu Z, Wei X, Su F, Chen CM. Releasing Free Radicals in Precursor Triggers the Formation of Closed Pores in Hard Carbon for Sodium-Ion Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401249. [PMID: 38529803 DOI: 10.1002/adma.202401249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/12/2024] [Indexed: 03/27/2024]
Abstract
Increasing closed pore volume in hard carbon is considered to be the most effective way to enhance the electrochemical performance in sodium-ion batteries. However, there is a lack of systematic insights into the formation mechanisms of closed pores at molecular level. In this study, a regulation strategy of closed pores via adjustment of the content of free radicals is reported. Sufficient free radicals are exposed by part delignification of bamboo, which is related to the formation of well-developed carbon layers and rich closed pores. In addition, excessive free radicals from nearly total delignification lead to more reactive sites during pyrolysis, which competes for limited precursor debris to form smaller microcrystals and therefore compact the material. The optimal sample delivers a large closed pore volume of 0.203 cm3 g-1, which leads to a high reversible capacity of 350 mAh g-1 at 20 mA g-1 and enhanced Na+ transfer kinetics. This work provides insights into the formation mechanisms of closed pores at molecular level, enabling rational design of hard carbon pore structures.
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Affiliation(s)
- Yilin Wang
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zonglin Yi
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Lijing Xie
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Yixuan Mao
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenjun Ji
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhanjun Liu
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Xianxian Wei
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Fangyuan Su
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Cheng-Meng Chen
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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3
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Kadela K, Grzybek G, Kotarba A, Stelmachowski P. Enhancing Graphene Nanoplatelet Reactivity through Low-Temperature Plasma Modification. ACS APPLIED MATERIALS & INTERFACES 2024; 16:19771-19779. [PMID: 38575853 DOI: 10.1021/acsami.4c01226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Graphene-based materials have great potential for applications in many fields, but their poor dispersion in polar solvents and chemical inertness require improvements. Low-temperature plasma allows the precise modification of materials, improving the physicochemical properties of the surface and thus creating the possibility of their potential use. Plasma treatment offers the possibility of introducing oxygen functional groups simply, rapidly, and in a controlled way. In this work, a systematic investigation of the effect of plasma modification on graphene nanoplatelets has been carried out to determine the optimal plasma parameters, especially the exposure time, for introducing the highest amount of oxygen functional groups on a surface. Different gases (O2, CO2, air, Ar, and C2H4) were used for this purpose. The chemical nature of the introduced oxygen-containing functionalities was characterized by X-ray photoelectron spectroscopy, and the structural properties of the materials were studied by Raman spectroscopy. The plasma-induced changes have been shown to evolve as the surface functionalities observed after plasma treatment are unstable. The immersion of the materials in liquids was carried out to check the reactivity of carbons in postplasma reactions. Stabilization of the material's surface after plasma treatment using CH3COOH was the most effective for introducing oxygen functional groups.
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Affiliation(s)
- Karolina Kadela
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Gabriela Grzybek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Paweł Stelmachowski
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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Le D, Pan J, Xing H. The Cell Adhesion and Proliferation Enhancement Impact of Low-Temperature Atmospheric Pressure Plasma-Polymerized Heptylamine on the Surface of Ti6Al4V Alloy. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6450. [PMID: 37834587 PMCID: PMC10573206 DOI: 10.3390/ma16196450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/11/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023]
Abstract
To chemically functionalize the Ti6Al4V alloy surface, a custom-made low-temperature atmospheric pressure plasma reactor device was used to polymerize heptylamine on it. The effect of different deposition times, an important process parameter, was also investigated. For each deposition time group, the surface morphology was observed via scanning electron microscopy (SEM). The surface chemical content was analyzed via X-ray photoelectron spectroscopy, and surface hydrophilicity was measured via water contact angle. The adhesion of bone marrow stromal cells (BMSCs) on the modified Ti6Al4V alloy surfaces was also observed via SEM. A quantitative evaluation of cell proliferation was performed via the Cell Counting Kit-8 assay. The results revealed that amino groups were introduced on the Ti6Al4V alloy surface via plasma-polymerized heptylamine (PPHA). The percentages of NH2/C for various deposition times (0 s, 30 s, 45 s, 60 s, 90 s, and 120 s) were 3.39%, 5.14%, 6.71%, 6.72%, 7.31%, and 7.65%. A 30 s, 45 s, and 60 s deposition time could significantly increase surface hydrophilicity with a mean water contact angle of 62.1 ± 1.6°, 65.7 ± 1.1°, and 88.2 ± 1.4°, respectively. Meanwhile, a 60 s, 90 s, and 120 s deposition time promoted BMSCs cell adhesion and proliferation. However, this promotion effect differed non-significantly among the three groups. In conclusion, the introduction of amino groups on the Ti6Al4V alloy surface exhibited surface modification and enhancement of cell adhesion and proliferation, which was partially associated with deposition time.
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Affiliation(s)
| | | | - Haixia Xing
- Department of General Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China; (D.L.); (J.P.)
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5
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Li G, Zhang Z, Xiao W, Wu T, Xu J. Synthesis of functional polyacrylamide (co)polymers by organocatalyzed post-polymerization modification of non-activated esters. RSC Adv 2023; 13:28931-28939. [PMID: 37795050 PMCID: PMC10545946 DOI: 10.1039/d3ra04667b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 09/16/2023] [Indexed: 10/06/2023] Open
Abstract
The broad application of polyacrylamides (PAMs) has greatly promoted the development of new synthetic methods to prepare PAM-based functional (co)polymers regarding their traditional preparation via the direct polymerization of various acrylamide monomers. Herein, we have explored the post-polymerization modification of the poly(2,2,2-trifluoroethyl acrylate) (PTFEA) homopolymer, a typical non-activated ester, and various amines using the organo-catalytic system involving 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and 1,2,4-triazole (TA). The reaction kinetics (e.g., the optimized reaction solvent, temperature, time, initial molar ratio of amines to esters and the molar ratio of DBU to TA) were carefully studied with the modulus substrate of iso-propylamine as the formed poly(iso-propyl acrylamide) (PNIPAM) representing the most investigated PAM. The full and partial amidation of the esters in PTFEA could be precisely regulated just by controlling the kinetic conditions to give (co)polymers with designable compositions and structures. We have demonstrated that the poly(N-acryloyl pyrrolidine) obtained by the post-polymerization modification of non-activated ester and pyrrolidine exhibited a noticeable phase transition, which confirmed the robustness and versatility of the post-polymerization modification. The described method paves the way for the synthesis of various (co)polymers with amide side chains from readily available polymer precursors.
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Affiliation(s)
- Guoqing Li
- Jiaxing Key Laboratory of Preparation and Application of Advanced Materials for Energy Conservation and Emission Reduction, College of Advanced Materials Engineering, Jiaxing Nanhu University Jiaxing 314001 P. R. China
| | - Zhiyi Zhang
- Jiangxi General Institute of Testing and Certification Nanchang 330052 P. R. China
| | - Wenhao Xiao
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Tongtong Wu
- Jiaxing Key Laboratory of Preparation and Application of Advanced Materials for Energy Conservation and Emission Reduction, College of Advanced Materials Engineering, Jiaxing Nanhu University Jiaxing 314001 P. R. China
| | - Jinbao Xu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology Guangzhou 510006 P. R. China
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6
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Chen Z, Zhao Z, Wu J. Application of Atmospheric-Pressure Plasma Treatment in Anti-Hairfalling of Polyester-Cotton Fleece Knitted Fabrics. Polymers (Basel) 2023; 15:polym15092097. [PMID: 37177242 PMCID: PMC10180652 DOI: 10.3390/polym15092097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/23/2023] [Accepted: 03/07/2023] [Indexed: 05/15/2023] Open
Abstract
In this study, atmospheric-pressure plasma (APP) was used to modify the surface of polyester-cotton fleece knitted fabrics to improve their anti-hairfalling properties. A series of treated samples were obtained by changing the power of plasma and treatment time. Scanning electron microscopy (SEM) and the surface roughness results reveal that the APP treatment can increase the roughness of fibers. The withdraw force and hairiness length of fibers results indicate that increasing withdraw force and decreasing hairiness length of fabrics can reduce hairfalling of the fibers. The values of weight loss rate confirm APP-treated powers and times can influence anti-hairfalling properties of fabrics. In addition, the best APP-treated time and electric power for the anti-hairfalling properties of the treated fabrics are respectively 15 s and 1.0 kW. Under this condition, the anti-hairfalling properties of the treated fabrics are improved by 48.3%, the contact angle decreased by 39.7%, and the wicking height increased by 18.3% compared with the untreated fabrics. It is notable that APP treatment does not affect the handle and tensile properties of fabrics.
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Affiliation(s)
- Zhipeng Chen
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430073, China
| | - Zhong Zhao
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430073, China
| | - Jihong Wu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430073, China
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Burmeister N, Vollstedt C, Kröger C, Friedrich T, Scharnagl N, Rohnke M, Zorn E, Wicha SG, Streit WR, Maison W. Zwitterionic surface modification of polyethylene via atmospheric plasma-induced polymerization of (vinylbenzyl-)sulfobetaine and evaluation of antifouling properties. Colloids Surf B Biointerfaces 2023; 224:113195. [PMID: 36758459 DOI: 10.1016/j.colsurfb.2023.113195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/05/2023]
Abstract
Zwitterionic polymer brushes were grafted from bulk polyethylene (PE) by air plasma activation of the PE surface followed by radical polymerization of the zwitterionic styrene derivative (vinylbenzyl)sulfobetaine (VBSB). Successful formation of dense poly-(VBSB)-brush layers was confirmed by goniometry, IR spectroscopy, XPS and ToF-SIMS analysis. The resulting zwitterionic layers are about 50-100 nm thick and cause extremely low contact angles of 10° (water) on the material. Correspondingly we determined a high density of > 1.0 × 1016 solvent accessible zwitterions/cm2 (corresponding to 2,0 *10-8 mol/cm2) by a UV-based ion-exchange assay with crystal violet. The elemental composition as determined by XPS and characteristic absorption bands in the IR spectra confirmed the presence of zwitterionic sulfobetaine polymer brushes. The antifouling properties of the resulting materials were evaluated in a bacterial adhesion test against gram-positive bacteria (S. aureus). We observed significantly reduced cellular adhesion of the zwitterionic material compared to pristine PE. These microbiological tests were complemented by tests in natural seawater. During a test period of 21 days, confocal microscopy revealed excellent antifouling properties and confirmed the operating antifouling mechanism. The procedure reported herein allows the efficient surface modification of bulk PE with zwitterionic sulfobetaine polymer brushes via a scalable approach. The resulting modified PE retains important properties of the bulk material and has excellent and durable antifouling properties.
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Affiliation(s)
- Nils Burmeister
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Christel Vollstedt
- Universität Hamburg, Department of Microbiology and Biotechnology, Ohnhorststrasse 18, 22609 Hamburg, Germany
| | - Cathrin Kröger
- Universität Hamburg, Department of Microbiology and Biotechnology, Ohnhorststrasse 18, 22609 Hamburg, Germany
| | - Timo Friedrich
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Nico Scharnagl
- Helmholtz-Zentrum Hereon GmbH, Institute of Surface Science, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Marcus Rohnke
- Justus-Liebig-Universität Gießen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Eilika Zorn
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Sebastian G Wicha
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Wolfgang R Streit
- Universität Hamburg, Department of Microbiology and Biotechnology, Ohnhorststrasse 18, 22609 Hamburg, Germany
| | - Wolfgang Maison
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany.
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8
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Kim JY, Jang H, Lee YR, Kim K, Suleiman HO, Park CS, Shin BJ, Jung EY, Tae HS. Nanostructured Polyaniline Films Functionalized through Auxiliary Nitrogen Addition in Atmospheric Pressure Plasma Polymerization. Polymers (Basel) 2023; 15:polym15071626. [PMID: 37050242 PMCID: PMC10096981 DOI: 10.3390/polym15071626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/22/2023] [Accepted: 03/22/2023] [Indexed: 04/14/2023] Open
Abstract
Polyaniline (PANI) was synthesized from liquid aniline, a nitrogen-containing aromatic compound, through the atmospheric pressure (AP) plasma process using a newly designed plasma jet array with wide spacing between plasma jets. To expand the area of the polymerized film, the newly proposed plasma jet array comprises three AP plasma jet devices spaced 7 mm apart in a triangular configuration and an electrodeless quartz tube capable of applying auxiliary gas in the center of the triangular plasma jets. The vaporized aniline monomer was synthesized into a PANI film using the proposed plasma array device. The effects of nitrogen gas addition on the morphological, chemical, and electrical properties of PANI films in AP argon plasma polymerization were examined. The iodine-doped PANI film was isolated from the atmosphere through encapsulation. The constant electrical resistance of the PANI film indicates that the conductive PANI film can achieve the desired resistance by controlling the atmospheric exposure time through encapsulation.
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Affiliation(s)
- Jae Young Kim
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hyojun Jang
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Ye Rin Lee
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kangmin Kim
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Habeeb Olaitan Suleiman
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Choon-Sang Park
- Department of Electrical Engineering, Milligan University, Johnson City, TN 37682, USA
| | - Bhum Jae Shin
- Department of Electronics Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Eun Young Jung
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
- The Institute of Electronic Technology, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Heung-Sik Tae
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
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Teixeira GTL, Gelamo RV, Mateus Santos Obata M, Andrade Silva LED, Silva MVD, Oliveira CJFD, Silva BPD, Aoki IV, Moreto JA, Slade NBL. Exploring the functionalization of Ti-6Al-4V alloy with the novel antimicrobial peptide JIChis-2 via plasma polymerization. BIOFOULING 2023; 39:47-63. [PMID: 36856008 DOI: 10.1080/08927014.2023.2183121] [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: 11/10/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
This study aimed to characterize the immobilization of the novel JIChis-2 peptide on the Ti-6Al-4V alloy, widely used in the biomedical sector. The antimicrobial activity of JIChis-2 was evaluated in the Gram-negative bacterium E. coli. Its immobilization occurred by inducing the formation of covalent bonds between the N-terminus of the peptides and the surface previously submitted to acrylic acid polymerization via the PECVD technique. Coated and uncoated surfaces were characterized by FTIR, AFM, SEM and EDX. Studies of global and localized corrosion were carried out, seeking to explore the effects triggered by surface treatment in an aggressive environment. Additionally, the ability of the functionalized material to prevent E. coli biofilm formation evidenced that the strategy to immobilize JIChis-2 in the Ti-6Al-4V alloy via PECVD of acrylic acid resulted in the development of a functional material with antibiofilm properties.
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Affiliation(s)
- Gabriella Teresinha Lima Teixeira
- Institute of Exact and Natural Sciences and Education, Federal University of Triângulo Mineiro (UFTM), Univerdecidade, Uberaba, Minas Gerais, Brazil
- Department of Physics, Federal University of Triângulo Mineiro (UFTM), Uberaba, Minas Gerais, Brazil
| | - Rogério Valentim Gelamo
- Department of Physics, Federal University of Triângulo Mineiro (UFTM), Uberaba, Minas Gerais, Brazil
- Institute of Technological and Exact Sciences, Federal University of Triângulo Mineiro (UFTM), Univerdecidade, Uberaba, Minas Gerais, Brazil
| | - Malu Mateus Santos Obata
- Department of Immunology, Microbiology and Parasitology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | | - Marcos Vinícius da Silva
- Department of Immunology, Microbiology and Parasitology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Carlo José Freire de Oliveira
- Department of Immunology, Microbiology and Parasitology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Brunela Pereira da Silva
- Polytechnic School, Chemical Engineering Department, University of São Paulo, Av. Prof. Luciano Gualberto, São Paulo, São Paulo, Brazil
| | - Idalina Vieira Aoki
- Polytechnic School, Chemical Engineering Department, University of São Paulo, Av. Prof. Luciano Gualberto, São Paulo, São Paulo, Brazil
| | - Jeferson Aparecido Moreto
- Institute of Exact and Natural Sciences and Education, Federal University of Triângulo Mineiro (UFTM), Univerdecidade, Uberaba, Minas Gerais, Brazil
- Department of Physics, Federal University of Triângulo Mineiro (UFTM), Uberaba, Minas Gerais, Brazil
| | - Natália Bueno Leite Slade
- Institute of Exact and Natural Sciences and Education, Federal University of Triângulo Mineiro (UFTM), Univerdecidade, Uberaba, Minas Gerais, Brazil
- Department of Physics, Federal University of Triângulo Mineiro (UFTM), Uberaba, Minas Gerais, Brazil
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10
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Alia Abdulaziz Alfi, Alharbi A, Qurban J, Abualnaja MM, Abumelha HM, Saad FA, El-Metwaly NM. Molecular modeling and docking studies of new antioxidant pyrazole-thiazole hybrids. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Kitao Y, Kimura Y, Asamoto H, Minamisawa H, Yamada K. Enhancement of Cr(VI) ion adsorption by two-step grafting of methacrylamide (MAAm) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) onto polyethylene plate. ENVIRONMENTAL TECHNOLOGY 2022; 43:2033-2046. [PMID: 33315527 DOI: 10.1080/09593330.2020.1864481] [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: 10/23/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
Polyethylene (PE) plates grafted with a neutral hydrophilic monomer, methacrylamide (MAAm), and a cationic monomer, 2-(dimethylamino)ethyl methacrylate (DMAEMA), (PE-g-PMAAm)-g-PDMAEMA plates, were prepared by the two-step photografting. The Cr(VI) ion adsorption of the resultant (PE-g-PMAAm)-g-PDMAEMA plates was investigated as a function of the initial pH value, temperature, and grafted amounts of PMAAm and PDMAEMA. The adsorption capacity of the (PE-g-PMAAm)-g-PDMAEMA plates had the maximum at the initial pH value of 3.0 and the initial adsorption rate increased with the temperature and increased with the amount of grafted DMAEMA. This result suggests that protonated dimethylamino groups present in the inside of the grafted layer are increasingly involved in the Cr(VI) ion adsorption by the increase in the water absorptivity through the formation of the intermediate grafted layer of PMAAm. The maximum adsorption ratio of 0.510 was obtained for a (PE-g-PMAAm)-g-PDMAEMA plate with GMAAm = 30 μmol/cm2 and GDMAEMA = 1.7 μmol/cm2. The maximum adsorption capacity obtained in this study was comparable to or higher than those of other adsorbents for Cr(VI) ions. The adsorption behaviour obeyed the pseudo-second order kinetic model and was well described by the Langmuir isotherm model, suggesting that the adsorption of Cr(VI) ions occurs through the electrostatic interaction between protonated dimethylamino groups and HCrO4- ions. Cr(VI) ions were successfully desorbed in such eluents as NaCl, NaCl containing NaOH, NH4Cl, NH4Cl containing NaOH, and NaOH and (PE-g-PMAAm)-g-PDMAEMA plates were repeatedly used without considerable loss in the adsorption capacity.
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Affiliation(s)
- Yoshinori Kitao
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Yuji Kimura
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Hiromichi Asamoto
- Department of Basic Science, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Hiroaki Minamisawa
- Department of Basic Science, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Kazunori Yamada
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
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12
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Liao P, You L, Zheng WJ, Zou W, Yan J, Yang H, Yang F. Self-cleaning expanded polytetrafluoroethylene-based hybrid membrane for water filtration. RSC Adv 2022; 12:13228-13234. [PMID: 35527732 PMCID: PMC9067432 DOI: 10.1039/d2ra01026g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/22/2022] [Indexed: 01/11/2023] Open
Abstract
Membrane surface fouling is a key problem for water filtration. Compositing photocatalytic substances with a base membrane is a widely used strategy, but most of the membrane will be decomposed by photocatalysis. Herein, expanded polytetrafluoroethylene (ePTFE) with extremely stable chemical properties is grafted with polyacrylic acid (PAA) and then modified with titanium dioxide (TiO2) to realize a self-cleaning TiO2-PAA-ePTFE filtration membrane. It can recover its flux under UV irradiation after fouling. With 20 rounds of self-cleaning, the membrane microstructure still remains intact. Moreover, in addition to retaining bovine serum albumin, TiO2 particles on the membrane surface are capable of absorbing small organic pollutants and degrading them. Thus, this membrane is potentially used as an anti-fouling membrane for water filtration.
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Affiliation(s)
- Peng Liao
- Sichuan University of Science and Engineering Zigong 643000 PR China
| | - Lan You
- Sichuan University of Science and Engineering Zigong 643000 PR China
| | - Wen Jiang Zheng
- Sichuan University of Science and Engineering Zigong 643000 PR China
| | - Wei Zou
- Sichuan University of Science and Engineering Zigong 643000 PR China
| | - Jie Yan
- Sichuan University of Science and Engineering Zigong 643000 PR China
| | - Hu Yang
- Sichuan University of Science and Engineering Zigong 643000 PR China
| | - Fan Yang
- Organic Fluorine Material Key Laboratory of Sichuan Province, Zhonghao Chenguang Chemical Research Institute Zigong 643201 PR China
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13
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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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14
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Li B, Geoghegan B, Weinert HM, Wölper C, Cutsail III G, Schulz S. Synthesis and redox activity of carbene-coordinated group 13 metal radicals. Chem Commun (Camb) 2022; 58:4372-4375. [DOI: 10.1039/d2cc00216g] [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
Carbenes are known to stabilize main group element compounds with unusual electronic properties. Herein, we report the synthesis of carbene-stabilized group 13 metal radicals (cAAC)MX2(IPr) (M = Al, X =...
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15
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Kim JY, Jang HJ, Bae GT, Park CS, Jung EY, Tae HS. Improvement of Nanostructured Polythiophene Film Uniformity Using a Cruciform Electrode and Substrate Rotation in Atmospheric Pressure Plasma Polymerization. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 12:32. [PMID: 35009982 PMCID: PMC8746814 DOI: 10.3390/nano12010032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
In atmospheric pressure (AP) plasma polymerization, increasing the effective volume of the plasma medium by expanding the plasma-generating region within the plasma reactor is considered a simple method to create regular and uniform polymer films. Here, we propose a newly designed AP plasma reactor with a cruciform wire electrode that can expand the discharge volume. Based on the plasma vessel configuration, which consists of a wide tube and a substrate stand, two tungsten wires crossed at 90 degrees are used as a common powered electrode in consideration of two-dimensional spatial expansion. In the wire electrode, which is partially covered by a glass capillary, discharge occurs at the boundary where the capillary terminates, so that the discharge region is divided into fourths along the cruciform electrode and the discharge volume can successfully expand. It is confirmed that although a discharge imbalance in the four regions of the AP plasma reactor can adversely affect the uniformity of the polymerized, nanostructured polymer film, rotating the substrate using a turntable can significantly improve the film uniformity. With this AP plasma reactor, nanostructured polythiophene (PTh) films are synthesized and the morphology and chemical properties of the PTh nanostructure, as well as the PTh-film uniformity and electrical properties, are investigated in detail.
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Affiliation(s)
- Jae Young Kim
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (J.Y.K.); (H.J.J.); (G.T.B.)
| | - Hyo Jun Jang
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (J.Y.K.); (H.J.J.); (G.T.B.)
| | - Gyu Tae Bae
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (J.Y.K.); (H.J.J.); (G.T.B.)
| | - Choon-Sang Park
- Department of Electrical and Computer Engineering, College of Engineering, Kansas State University, Manhattan, KS 66506, USA;
| | - Eun Young Jung
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (J.Y.K.); (H.J.J.); (G.T.B.)
| | - Heung-Sik Tae
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (J.Y.K.); (H.J.J.); (G.T.B.)
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea
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16
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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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17
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Potential Application of Pin-to-Liquid Dielectric Barrier Discharge Structure in Decomposing Aqueous Phosphorus Compounds for Monitoring Water Quality. MATERIALS 2021; 14:ma14247559. [PMID: 34947158 PMCID: PMC8706503 DOI: 10.3390/ma14247559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/30/2022]
Abstract
Here, we proposed a pin-to-liquid dielectric barrier discharge (DBD) structure that used a water-containing vessel body as a dielectric barrier for the stable and effective treatment of aqueous solutions in an open atmosphere. To obtain an intense pin-to-liquid alternating current discharge using a dielectric barrier, discharge characteristics, including the area and shape of a ground-plate-type electrode, were investigated after filling the vessel with equivalent amounts of water. Consequently, as the area of the ground electrode increased, the discharge current became stronger, and its timing became faster. Moreover, we proposed that the pin-to-liquid DBD reactor could be used to decompose phosphorus compounds in water in the form of phosphate as a promising pretreatment method for monitoring total phosphorus in water. The decomposition of phosphorus compounds using the pin-to-liquid DBD reactor demonstrated excellent performance—comparable to the thermochemical pretreatment method—which could be a standard pretreatment method for decomposing phosphorus compounds in water.
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18
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Xu N, Tao Y, Wang X, Luo Z. Construction of a Novel Substrate of Unfigured Islands-in-Sea Microfiber Synthetic Leather Based on Waste Collagen. ACS OMEGA 2021; 6:26086-26097. [PMID: 34660969 PMCID: PMC8515376 DOI: 10.1021/acsomega.1c03061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
This study is to introduce waste collagen into an unfigured islands-in-sea microfiber nonwoven material, replacing the polyurethane impregnation section of the traditional manufacturing process with the collagen impregnation process. The modified collagen was first impregnated in polyamide/low-density polyethylene (PA/LDPE) fiber nonwoven to form a film. Then the low-density polyethylene component was extracted and dissolved in toluene, resulting in a collagen-based microfiber nonwoven substrate. Waste collagen was first modified to introduce C=C into the molecular chain to obtain vinyl collagen (CMA), and then the following film formation conditions for CMA were studied: 73% degree of substitution (DS), 3 h cross-linking time, and 0.005-0.01 wt % initiator concentration. Then, the preparation of CMA-PA/LDPE and toluene extraction processes were investigated. The optimum toluene extraction conditions were obtained as an extraction temperature of 85 °C and an extraction time of 110 min. The properties of the nonwoven materials were compared before (CMA-PA/LDPE) and after (PA-CMA) extraction. It was found that the homogeneity, tensile strength, and static moisture permeability of the PA-CMA materials prepared by CMA with 50 and 73% DS were all superior to those of PA/LDPE. In particular, the static moisture permeability of PA-CMA (691.6 mg/10 cm2·24 h) increased by 36.2% compared to the microfiber synthetic leather substrate currently in the market. Using scanning electron microscopy (SEM), the continuity of a film of PA-CMA with 73% DS was observed to be better and the fibers were differentiated and relatively tighter fiber-to-fiber gap. The studied novel green process can eliminate the large amount of dimethylformamide (DMF) pollution caused by the current solvent-based polyurethane impregnation process.
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19
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Zhang Y, Wu H, Yuan B, Zhu X, Zhang K, Zhang X. Enhanced osteogenic activity and antibacterial performance in vitro of polyetheretherketone by plasma-induced graft polymerization of acrylic acid and incorporation of zinc ions. J Mater Chem B 2021; 9:7506-7515. [PMID: 34551053 DOI: 10.1039/d1tb01349a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Polyetheretherketone (PEEK) has been widely used in the fields of orthopedics and trauma, but weak osteointegration and bacterial infection affect its long-term stability and repair effects. Surface modification is an effective way to improve the osteogenic and antibacterial activity of PEEK implants. In the present study, a layer of acrylic acid (AA) polymer coating loaded with zinc ions (Zn2+) was constructed on the surface of PEEK (PEEK-AA-Zn) using a strategy of combining plasma-induced graft polymerization with a chemical immersion technique. Successful construction of the AA coating remarkably enhanced the hydrophilicity of PEEK, and effectively loaded and released Zn2+. In vitro cell culture using MC3T3-E1 preosteoblasts showed that the Zn2+ released from PEEK-AA-Zn promoted cell proliferation and elevated gene expression levels of alkaline phosphatase (ALP), osteocalcin (OCN) and bone sialoprotein (BSP). Antibacterial tests revealed that PEEK-AA-Zn efficiently inhibited the proliferation of Staphylococcus aureus (S. aureus). These results suggest that the combined method of graft polymerization and ion incorporation endows PEEK with excellent osteogenic and antibacterial activity, which provides a wide range of possibilities for developing PEEK implants with multifunctional properties for bone tissue repair.
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Affiliation(s)
- Yuxiang Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
| | - Hongfeng Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
| | - Bo Yuan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
| | - Xiangdong Zhu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
| | - Kai Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
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20
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Jang HJ, Jung EY, Parsons T, Tae HS, Park CS. A Review of Plasma Synthesis Methods for Polymer Films and Nanoparticles under Atmospheric Pressure Conditions. Polymers (Basel) 2021; 13:polym13142267. [PMID: 34301024 PMCID: PMC8309454 DOI: 10.3390/polym13142267] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 02/06/2023] Open
Abstract
In this paper, we present an overview of recent approaches in the gas/aerosol-through-plasma (GATP) and liquid plasma methods for synthesizing polymer films and nanoparticles (NPs) using an atmospheric-pressure plasma (APP) technique. We hope to aid students and researchers starting out in the polymerization field by compiling the most commonly utilized simple plasma synthesis methods, so that they can readily select a method that best suits their needs. Although APP methods are widely employed for polymer synthesis, and there are many related papers for specific applications, reviews that provide comprehensive coverage of the variations of APP methods for polymer synthesis are rarely reported. We introduce and compile over 50 recent papers on various APP polymerization methods that allow us to discuss the existing challenges and future direction of GATP and solution plasma methods under ambient air conditions for large-area and mass nanoparticle production.
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Affiliation(s)
- Hyo Jun Jang
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (H.J.J.); (E.Y.J.)
| | - Eun Young Jung
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (H.J.J.); (E.Y.J.)
| | - Travis Parsons
- GBS (Global Business Services) IT, The Procter & Gamble Company, Cincinnati, OH 45202, USA;
| | - Heung-Sik Tae
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea; (H.J.J.); (E.Y.J.)
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea
- Correspondence: (H.-S.T.); (C.-S.P.)
| | - Choon-Sang Park
- Department of Electronics and Computer Engineering, College of Engineering, Kansas State University, Manhattan, KS 66506, USA
- Correspondence: (H.-S.T.); (C.-S.P.)
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21
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Mitev DP, Alsharabasy AM, Morrison L, Wittig S, Diener C, Pandit A. Plasma & Microwaves as Greener Options for Nanodiamond Purification: Insight Into Cytocompatibility. Front Bioeng Biotechnol 2021; 9:637587. [PMID: 34277579 PMCID: PMC8278578 DOI: 10.3389/fbioe.2021.637587] [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: 12/12/2020] [Accepted: 05/17/2021] [Indexed: 11/29/2022] Open
Abstract
The potential biomedical applications of nanodiamond have been considered over the last few decades. However, there is still uncertainty regarding the extent to which the surface characteristics of this material can influence potential applications. The present study investigated the effects of surface characteristics alongside the prospective of improving nanodiamond production using cold plasma and microwave technologies for the surface tailoring of the nanocarbons. Numerous approaches were applied to purify, refine and modify a group of nanosized diamonds at each step of their production cycle: from the detonation soot as the initial raw material to already certified samples. The degree of surface changes were deliberately performed slowly and kept at different non-diamond carbon presence stages, non-carbon elemental content, and amount converted superficial moieties. In total, 21 treatment procedures and 35 types of nanosize diamond products were investigated. In addition cultures of human fibroblast cells showed enhanced viability in the presence of many of the processed nanodiamonds, indicating the potential for dermal applications of these remarkable nanomaterials.
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Affiliation(s)
- Dimitar P Mitev
- CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Amir M Alsharabasy
- CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Liam Morrison
- Earth and Ocean Sciences and Ryan Institute, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | | | | | - Abhay Pandit
- CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway, Ireland
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22
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Promising grafting strategies on cellulosic backbone through radical polymerization processes – A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110448] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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23
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Yamada K, Takada A, Konishi A, Kimura Y, Asamoto H, Minamisawa H. Hexavalent Cr ion adsorption and desorption behaviour of expanded poly(tetrafluoro)ethylene films grafted with 2-(dimethylamino)ethyl methacrylate. ENVIRONMENTAL TECHNOLOGY 2021; 42:1885-1898. [PMID: 31631793 DOI: 10.1080/09593330.2019.1683612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
A new polymeric adsorbent for Cr(VI) ions based on an expanded poly(tetrafluoroethylene) (ePTFE) film was prepared by the combined use of the pretreatment with oxygen plasma and photografting of 2-(dimethylamino)ethyl methacrylate (DMAEMA). The grafting of DMAEMA was characterized by XPS and FT-IR spectroscopic measurements. The adsorption behaviour of DMAEMA-grafted ePTFE (ePTFE-g-PDMAEMA) films was investigated as a function of the experimental parameters, such as the initial pH value, temperature, and grafted amount. The adsorption capacity and initial adsorption rate had the maximum values at the initial pH value of 3.0. On the other hand, the adsorption capacity became almost constant at temperatures higher than 30°C, although the adsorption rate increased over the temperature. The adsorption behaviour obeyed the pseudo-second-order kinetic model and well expressed by the Langmuir isotherm equation with higher correlation coefficients. These results indicate that the adsorption of Cr(VI) ions occurs through the electrostatic interaction between protonated dimethylamino groups on a grafted PDMAEMA chain and HCrO4- ions. Cr(VI) ions were successfully desorbed from Cr(VI)-loaded ePTFE-g-PDMAEMA films in the eluents, such as NaCl at 0.50 M, NH4Cl at 0.50M, and NaOH at 1.0 mM, and ePTFE-g-PDMAEMA films were repeatedly used for adsorption of Cr(VI) ions without appreciable loss in the adsorption capacity. It should be noted that Cr(VI) ion adsorptivity with a high initial rate was conferred to the ePTFE films. The results obtained in this study emphasize that ePTFE-g-PDMAEMA films can be applied as an adsorbent for Cr(VI) ions.
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Affiliation(s)
- Kazunori Yamada
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Asumi Takada
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Ayako Konishi
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Yuji Kimura
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Hiromichi Asamoto
- Department of Basic Science, College of Industrial Technology, Nihon University, Narashino, Japan
| | - Hiroaki Minamisawa
- Department of Basic Science, College of Industrial Technology, Nihon University, Narashino, Japan
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24
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Ma C, Nikiforov A, De Geyter N, Dai X, Morent R, Ostrikov KK. Future antiviral polymers by plasma processing. Prog Polym Sci 2021; 118:101410. [PMID: 33967350 PMCID: PMC8085113 DOI: 10.1016/j.progpolymsci.2021.101410] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/11/2021] [Accepted: 04/22/2021] [Indexed: 12/31/2022]
Abstract
Coronavirus disease 2019 (COVID-19) is largely threatening global public health, social stability, and economy. Efforts of the scientific community are turning to this global crisis and should present future preventative measures. With recent trends in polymer science that use plasma to activate and enhance the functionalities of polymer surfaces by surface etching, surface grafting, coating and activation combined with recent advances in understanding polymer-virus interactions at the nanoscale, it is promising to employ advanced plasma processing for smart antiviral applications. This trend article highlights the innovative and emerging directions and approaches in plasma-based surface engineering to create antiviral polymers. After introducing the unique features of plasma processing of polymers, novel plasma strategies that can be applied to engineer polymers with antiviral properties are presented and critically evaluated. The challenges and future perspectives of exploiting the unique plasma-specific effects to engineer smart polymers with virus-capture, virus-detection, virus-repelling, and/or virus-inactivation functionalities for biomedical applications are analysed and discussed.
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Key Words
- ACE2, angiotensin-converting enzyme 2
- Antiviral polymers
- BSA, bovine serum albumin
- CF4, tetrafluoromethane
- COVID-19, coronavirus disease 2019
- DC, direct current
- H2, hydrogen
- HBV, hepatitis B virus
- HMDSO, hexamethyldisiloxane
- IPNpp, plasma polymerized isopentyl nitrite
- MERS-CoV, middle east respiratory syndrome
- MW, microwave
- NO, nitric oxide
- PC, polycarbonate
- PDMS, polydimethylsiloxane
- PECVD, plasma-enhanced chemical vapour deposition
- PEG, polyethene glycol
- PET, polyethene terephthalate
- PFM, pentafluorophenyl methacrylate
- PP, polypropylene
- PPE, personal protective equipment
- PS, polystyrene
- PTFE, polytetrafluoroethylene
- PVC, polyvinyl chloride
- REF, reference
- RF, radio frequency
- RONS, reactive oxygen and nitrogen species
- RSV, respiratory syncytial virus
- RT-PCR, reverse transcription-polymerase chain reaction
- RV, rhinovirus
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- SEM, scanning electron microscopy
- TEOS-O2, tetraethyl orthosilicate and oxygen
- UV, ultraviolet
- WCA, water contact angle
- plasma processing
- surface modification
- ΔD, the variation of the dissipation
- Δf, the frequency shift
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Affiliation(s)
- Chuanlong Ma
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Xiaofeng Dai
- Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), 4000 Brisbane, Australia
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25
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Turkoglu Sasmazel H, Alazzawi M, Kadim Abid Alsahib N. Atmospheric Pressure Plasma Surface Treatment of Polymers and Influence on Cell Cultivation. Molecules 2021; 26:molecules26061665. [PMID: 33802663 PMCID: PMC8002466 DOI: 10.3390/molecules26061665] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 12/31/2022] Open
Abstract
Atmospheric plasma treatment is an effective and economical surface treatment technique. The main advantage of this technique is that the bulk properties of the material remain unchanged while the surface properties and biocompatibility are enhanced. Polymers are used in many biomedical applications; such as implants, because of their variable bulk properties. On the other hand, their surface properties are inadequate which demands certain surface treatments including atmospheric pressure plasma treatment. In biomedical applications, surface treatment is important to promote good cell adhesion, proliferation, and growth. This article aim is to give an overview of different atmospheric pressure plasma treatments of polymer surface, and their influence on cell-material interaction with different cell lines.
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Affiliation(s)
- Hilal Turkoglu Sasmazel
- Department of Metallurgical and Materials Engineering, Atilim University, Incek, Golbasi, 06830 Ankara, Turkey
- Correspondence: ; Tel.: +90-(312)-586-8844
| | - Marwa Alazzawi
- Department of Biomedical Engineering, Al Nahrain University, Al Jadriya Bridge, Baghdad 64074, Iraq; (M.A.); (N.K.A.A.)
| | - Nabeel Kadim Abid Alsahib
- Department of Biomedical Engineering, Al Nahrain University, Al Jadriya Bridge, Baghdad 64074, Iraq; (M.A.); (N.K.A.A.)
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26
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Verma M, Chan YH, Saha S, Liu MH. Recent Developments in Semiconducting Polymer Dots for Analytical Detection and NIR-II Fluorescence Imaging. ACS APPLIED BIO MATERIALS 2021; 4:2142-2159. [PMID: 35014343 DOI: 10.1021/acsabm.0c01185] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In recent years, semiconducting polymer dots (Pdots) have attracted enormous attention in applications from fundamental analytical detection to advanced deep-tissue bioimaging due to their ultrahigh fluorescence brightness with excellent photostability and minimal cytotoxicity. Pdots have therefore been widely adopted for a variety types of molecular sensing for analytical detection. More importantly, the recent development of Pdots for use in the optical window between 1000 and 1700 nm, popularly known as the "second near-infrared window" (NIR-II), has emerged as a class of optical transparent imaging technology in the living body. The advantages of the NIR-II region over the traditional NIR-I (700-900 nm) window in fluorescence imaging originate from the reduced autofluorescence, minimal absorption and scattering of light, and improved penetration depths to yield high spatiotemporal images for biological tissues. Herein, we discuss and summarize the recent developments of Pdots employed for analytical detection and NIR-II fluorescence imaging. Starting with their preparation, the recent developments for targeting various analytes are then highlighted. After that, the importance of and latest progress in NIR-II fluorescence imaging using Pdots are reported. Finally, perspectives and challenges associated with the emergence of Pdots in different fields are given.
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Affiliation(s)
- Meenakshi Verma
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Yang-Hsiang Chan
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan.,Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30050, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Ming-Ho Liu
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
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Biazar E, Kamalvand M, Avani F. Recent advances in surface modification of biopolymeric nanofibrous scaffolds. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2020.1857383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Esmaeil Biazar
- Department of Biomaterials Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Mahshad Kamalvand
- Department of Biomaterials Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Farzaneh Avani
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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Plasma-enhanced modification of polysaccharides for wastewater treatment: A review. Carbohydr Polym 2021; 252:117195. [PMID: 33183635 DOI: 10.1016/j.carbpol.2020.117195] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/29/2020] [Accepted: 10/03/2020] [Indexed: 01/23/2023]
Abstract
In this work, novel polysaccharide-based sorbents modified with plasma technologies are discussed. Plasma selectively modifies the surface properties by generating specific moieties, enhancing adsorption performance, and the physical-chemical properties of the material without modifying its bulk properties. Among plasma technologies, cold plasma is more suitable and energy-efficient, since thermal-sensitive materials could be modified using this technology. Besides, atmospheric-pressure plasma systems possess the required features to scale-up plasma technologies for surface modification of sorbents. Moreover, a big challenge is the semi-continuous operation to modify sorbents as it would decrease overall process costs. Due to its low-cost and extensive availability, polysaccharide-based sorbents are promising substrates for plasma-enhanced modification to develop highly efficient adsorbents. The development of polysaccharide-based materials includes modified cellulose, chitosan, or lignocellulosic materials with functionalities that increase adsorption capacity and selectivity towards a specific organic or inorganic pollutant.
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Nathanael AJ, Oh TH. Biopolymer Coatings for Biomedical Applications. Polymers (Basel) 2020; 12:E3061. [PMID: 33371349 PMCID: PMC7767366 DOI: 10.3390/polym12123061] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 02/06/2023] Open
Abstract
Biopolymer coatings exhibit outstanding potential in various biomedical applications, due to their flexible functionalization. In this review, we have discussed the latest developments in biopolymer coatings on various substrates and nanoparticles for improved tissue engineering and drug delivery applications, and summarized the latest research advancements. Polymer coatings are used to modify surface properties to satisfy certain requirements or include additional functionalities for different biomedical applications. Additionally, polymer coatings with different inorganic ions may facilitate different functionalities, such as cell proliferation, tissue growth, repair, and delivery of biomolecules, such as growth factors, active molecules, antimicrobial agents, and drugs. This review primarily focuses on specific polymers for coating applications and different polymer coatings for increased functionalization. We aim to provide broad overview of latest developments in the various kind of biopolymer coatings for biomedical applications, in order to highlight the most important results in the literatures, and to offer a potential outline for impending progress and perspective. Some key polymer coatings were discussed in detail. Further, the use of polymer coatings on nanomaterials for biomedical applications has also been discussed, and the latest research results have been reported.
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Affiliation(s)
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
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Ashfaq A, Clochard MC, Coqueret X, Dispenza C, Driscoll MS, Ulański P, Al-Sheikhly M. Polymerization Reactions and Modifications of Polymers by Ionizing Radiation. Polymers (Basel) 2020; 12:E2877. [PMID: 33266261 PMCID: PMC7760743 DOI: 10.3390/polym12122877] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 01/30/2023] Open
Abstract
Ionizing radiation has become the most effective way to modify natural and synthetic polymers through crosslinking, degradation, and graft polymerization. This review will include an in-depth analysis of radiation chemistry mechanisms and the kinetics of the radiation-induced C-centered free radical, anion, and cation polymerization, and grafting. It also presents sections on radiation modifications of synthetic and natural polymers. For decades, low linear energy transfer (LLET) ionizing radiation, such as gamma rays, X-rays, and up to 10 MeV electron beams, has been the primary tool to produce many products through polymerization reactions. Photons and electrons interaction with polymers display various mechanisms. While the interactions of gamma ray and X-ray photons are mainly through the photoelectric effect, Compton scattering, and pair-production, the interactions of the high-energy electrons take place through coulombic interactions. Despite the type of radiation used on materials, photons or high energy electrons, in both cases ions and electrons are produced. The interactions between electrons and monomers takes place within less than a nanosecond. Depending on the dose rate (dose is defined as the absorbed radiation energy per unit mass), the kinetic chain length of the propagation can be controlled, hence allowing for some control over the degree of polymerization. When polymers are submitted to high-energy radiation in the bulk, contrasting behaviors are observed with a dominant effect of cross-linking or chain scission, depending on the chemical nature and physical characteristics of the material. Polymers in solution are subject to indirect effects resulting from the radiolysis of the medium. Likewise, for radiation-induced polymerization, depending on the dose rate, the free radicals generated on polymer chains can undergo various reactions, such as inter/intramolecular combination or inter/intramolecular disproportionation, b-scission. These reactions lead to structural or functional polymer modifications. In the presence of oxygen, playing on irradiation dose-rates, one can favor crosslinking reactions or promotes degradations through oxidations. The competition between the crosslinking reactions of C-centered free radicals and their reactions with oxygen is described through fundamental mechanism formalisms. The fundamentals of polymerization reactions are herein presented to meet industrial needs for various polymer materials produced or degraded by irradiation. Notably, the medical and industrial applications of polymers are endless and thus it is vital to investigate the effects of sterilization dose and dose rate on various polymers and copolymers with different molecular structures and morphologies. The presence or absence of various functional groups, degree of crystallinity, irradiation temperature, etc. all greatly affect the radiation chemistry of the irradiated polymers. Over the past decade, grafting new chemical functionalities on solid polymers by radiation-induced polymerization (also called RIG for Radiation-Induced Grafting) has been widely exploited to develop innovative materials in coherence with actual societal expectations. These novel materials respond not only to health emergencies but also to carbon-free energy needs (e.g., hydrogen fuel cells, piezoelectricity, etc.) and environmental concerns with the development of numerous specific adsorbents of chemical hazards and pollutants. The modification of polymers through RIG is durable as it covalently bonds the functional monomers. As radiation penetration depths can be varied, this technique can be used to modify polymer surface or bulk. The many parameters influencing RIG that control the yield of the grafting process are discussed in this review. These include monomer reactivity, irradiation dose, solvent, presence of inhibitor of homopolymerization, grafting temperature, etc. Today, the general knowledge of RIG can be applied to any solid polymer and may predict, to some extent, the grafting location. A special focus is on how ionizing radiation sources (ion and electron beams, UVs) may be chosen or mixed to combine both solid polymer nanostructuration and RIG. LLET ionizing radiation has also been extensively used to synthesize hydrogel and nanogel for drug delivery systems and other advanced applications. In particular, nanogels can either be produced by radiation-induced polymerization and simultaneous crosslinking of hydrophilic monomers in "nanocompartments", i.e., within the aqueous phase of inverse micelles, or by intramolecular crosslinking of suitable water-soluble polymers. The radiolytically produced oxidizing species from water, •OH radicals, can easily abstract H-atoms from the backbone of the dissolved polymers (or can add to the unsaturated bonds) leading to the formation of C-centered radicals. These C-centered free radicals can undergo two main competitive reactions; intramolecular and intermolecular crosslinking. When produced by electron beam irradiation, higher temperatures, dose rates within the pulse, and pulse repetition rates favour intramolecular crosslinking over intermolecular crosslinking, thus enabling a better control of particle size and size distribution. For other water-soluble biopolymers such as polysaccharides, proteins, DNA and RNA, the abstraction of H atoms or the addition to the unsaturation by •OH can lead to the direct scission of the backbone, double, or single strand breaks of these polymers.
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Affiliation(s)
- Aiysha Ashfaq
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA;
| | - Marie-Claude Clochard
- Laboratoire des Solides Irradiés, CEA/DRF/IRAMIS-CNRS- Ecole Polytechnique UMR 7642, Institut Polytechnique de Paris, 91128 Palaiseau, France;
| | - Xavier Coqueret
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims CEDEX 2, France;
| | - Clelia Dispenza
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze 6, 90128 Palermo, Italy;
- Istituto di BioFisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Mark S. Driscoll
- Department of Chemistry, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA;
- UV/EB Technology Center, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Piotr Ulański
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland;
| | - Mohamad Al-Sheikhly
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
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Zhao C, Zhou L, Chiao M, Yang W. Antibacterial hydrogel coating: Strategies in surface chemistry. Adv Colloid Interface Sci 2020; 285:102280. [PMID: 33010575 DOI: 10.1016/j.cis.2020.102280] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/20/2020] [Accepted: 09/24/2020] [Indexed: 10/23/2022]
Abstract
Hydrogels have emerged as promising antimicrobial materials due to their unique three-dimensional structure, which provides sufficient capacity to accommodate various materials, including small molecules, polymers and particles. Coating substrates with antibacterial hydrogel layers has been recognized as an effective strategy to combat bacterial colonization. To prevent possible delamination of hydrogel coatings from substrates, it is crucial to attach hydrogel layers via stronger links, such as covalent bonds. To date, various surface chemical strategies have been developed to introduce hydrogel coatings on different substrates. In this review, we first give a brief introduction of the major strategies for designing antibacterial coatings. Then, we summarize the chemical methods used to fix the antibacterial hydrogel layer on the substrate, which include surface-initiated graft crosslinking polymerization, anchoring the hydrogel layer on the surface during crosslinking, and chemical crosslinking of layer-by-layer coating. The reaction mechanisms of each method and matched pretreatment strategies are systemically documented with the aim of introducing available protocols to researchers in related fields for designing hydrogel-coated antibacterial surfaces.
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Pajerski W, Duch J, Ochonska D, Golda-Cepa M, Brzychczy-Wloch M, Kotarba A. Bacterial attachment to oxygen-functionalized graphenic surfaces. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 113:110972. [DOI: 10.1016/j.msec.2020.110972] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/23/2020] [Accepted: 04/15/2020] [Indexed: 01/06/2023]
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A multifaceted biomimetic interface to improve the longevity of orthopedic implants. Acta Biomater 2020; 110:266-279. [PMID: 32344174 DOI: 10.1016/j.actbio.2020.04.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/23/2020] [Accepted: 04/09/2020] [Indexed: 01/22/2023]
Abstract
The rise of additive manufacturing has provided a paradigm shift in the fabrication of precise, patient-specific implants that replicate the physical properties of native bone. However, eliciting an optimal biological response from such materials for rapid bone integration remains a challenge. Here we propose for the first time a one-step ion-assisted plasma polymerization process to create bio-functional 3D printed titanium (Ti) implants that offer rapid bone integration. Using selective laser melting, porous Ti implants with enhanced bone-mimicking mechanical properties were fabricated. The implants were functionalized uniformly with a highly reactive, radical-rich polymeric coating generated using a unique combination of plasma polymerization and plasma immersion ion implantation. We demonstrated the performance of such activated Ti implants with a focus on the coating's homogeneity, stability, and biological functionality. It was shown that the optimized coating was highly robust and possessed superb physico-chemical stability in a corrosive physiological solution. The plasma activated coating was cytocompatible and non-immunogenic; and through its high reactivity, it allowed for easy, one-step covalent immobilization of functional biomolecules in the absence of solvents or chemicals. The activated Ti implants bio-functionalized with bone morphogenetic protein 2 (BMP-2) showed a reduced protein desorption and a more sustained osteoblast response both in vitro and in vivo compared to implants modified through conventional physisorption of BMP-2. The versatile new approach presented here will enable the development of bio-functionalized additively manufactured implants that are patient-specific and offer improved integration with host tissue. STATEMENT OF SIGNIFICANCE: Additive manufacturing has revolutionized the fabrication of patient-specific orthopedic implants. Although such 3D printed implants can show desirable mechanical and mass transport properties, they often require surface bio-functionalities to enable control over the biological response. Surface covalent immobilization of bioactive molecules is a viable approach to achieve this. Here we report the development of additively manufactured titanium implants that precisely replicate the physical properties of native bone and are bio-functionalized in a simple, reagent-free step. Our results show that covalent attachment of bone-related growth factors through ion-assisted plasma polymerized interlayers circumvents their desorption in physiological solution and significantly improves the bone induction by the implants both in vitro and in vivo.
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Yan K, Kong H, Cui Z, Fu P, Liu M, Qiao X, Pang X. A Versatile Strategy for Unimolecular Micelle-Derived Hollow Polymer Nanoparticles as General Nanoreactors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6690-6697. [PMID: 32493013 DOI: 10.1021/acs.langmuir.0c00673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We reported the synthesis of a well-defined hollow polymer nanoparticle derived from star-shaped unimolecular micelles. β-Cyclodextrin was first applied as an efficient macroinitiator to prepare a star-shaped PCL via ring-opening polymerization (ROP). Then, the star-shaped PCL was modified to be a macro-RAFT agent for photoinduced electron/energy transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of S-Cl monomers. The prepared unimolecular micelles can be photocross-linked under UV irradiation after a simple nucleophilic substitution reaction, which made -Cl groups to be -N3 groups. After the selective removal of the PCL core, hollow polymer nanoparticles were achieved and exhibited to be a general nanoreactor strategy for the fabrication of nanocrystals with well-controlled architectures. Compared with unimolecular micelle templates, the nanocrystals prepared by hollow templates are absolutely pure as no polymer chains are embedded in the inorganic nanocrystals. In addition, by changing the concentration of the precursor, the structure of the nanocrystal can be changed from a normal spherical structure to a hollow structure.
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Affiliation(s)
- Kailong Yan
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Huimin Kong
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhe Cui
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Peng Fu
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Minying Liu
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaoguang Qiao
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Xinchang Pang
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
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Al Dybiat I, Baitukha A, Pimpie C, Kaci R, Pocard M, Arefi Khonsari F, Mirshahi M. Multi-nanolayer drug delivery using radiofrequency plasma technology. BMC Cancer 2020; 20:565. [PMID: 32552705 PMCID: PMC7302375 DOI: 10.1186/s12885-020-06989-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/21/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND It may be impossible to perform cancer surgery with free margins in the presence of an unresectable structure. Local drug treatment after surgery has been proposed to increase the rate of tumor control. METHODS Multi-nanolayers (10-330 nm) were generated by a low-pressure (375mTorr) inductively coupled plasma (13.56 MHz) reactor for anticancer drug delivery by the deposition of polycaprolactone-polyethylene glycol multistack barrier on the collagen membrane (100 μm thickness). Carboplatin (300 μg/cm2) was used for the in vitro and in vivo investigations. Energy-dispersive X-ray spectroscopy (15 keV), scanning electron microscopy and inductively coupled plasma mass spectrometry were used to detect the presence of carboplatin in the nanolayer, the tumor sample and the culture medium. Preclinical studies were performed on ovarian (OVCAR-3NIH) and colon (CT26) cancer cell lines as xenografts (45 days) and allografts (23 days) in Swiss-nude (n = 6) and immunocompetent BALB/cByJ mice (n = 24), respectively. RESULTS The loading of carboplatin or other drugs between the nanofilm on the collagen membrane did not modify the mesh complex architecture or the drug properties. Drugs were detectable on the membrane for more than 2 weeks in the in vitro analysis and more than 10 days in the in vivo analysis. Cytotoxic mesh decreased cell adherence (down 5.42-fold) and induced cancer cell destruction (up to 7.87-fold). Implantation of the mesh on the mouse tumor nodule modified the cell architecture and decreased the tumor size (50.26%) compared to the control by inducing cell apoptosis. CONCLUSION Plasma technology allows a mesh to be built with multi-nanolayer anticancer drug delivery on collagen membranes.
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Affiliation(s)
- Iman Al Dybiat
- CAP-Paris Tech, INSERM U1275, Department of Oncologic & Digestive Surgery, Université de Paris, Lariboisière Hospital, 2 rue Ambroise Paré, 75010, Paris, France
| | - Alibi Baitukha
- Laboratoire Interfaces et Systèmes Electrochimiques, Sorbonne Universités, University Paris 06, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Cynthia Pimpie
- CAP-Paris Tech, INSERM U1275, Department of Oncologic & Digestive Surgery, Université de Paris, Lariboisière Hospital, 2 rue Ambroise Paré, 75010, Paris, France
| | - Rachid Kaci
- Central Department of Anatomy and Pathological Cytology, Hospital Lariboisière, 75010, Paris, France
| | - Marc Pocard
- CAP-Paris Tech, INSERM U1275, Department of Oncologic & Digestive Surgery, Université de Paris, Lariboisière Hospital, 2 rue Ambroise Paré, 75010, Paris, France
| | - Farzaneh Arefi Khonsari
- Laboratoire Interfaces et Systèmes Electrochimiques, Sorbonne Universités, University Paris 06, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Massoud Mirshahi
- CAP-Paris Tech, INSERM U1275, Department of Oncologic & Digestive Surgery, Université de Paris, Lariboisière Hospital, 2 rue Ambroise Paré, 75010, Paris, France.
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Wancura M, Talanker M, Toubbeh S, Bryan A, Cosgriff-Hernandez E. Bioactive hydrogel coatings of complex substrates using diffusion-mediated redox initiation. J Mater Chem B 2020; 8:4289-4298. [PMID: 32322860 DOI: 10.1039/d0tb00055h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Hydrogels have long been established as materials with tunable stiffness and chemistry that enable controlled cellular interactions. When applied as coatings, hydrogels can be used to introduce biofunctionality to medical devices with minimal effect on bulk properties. However, it remains challenging to uniformly apply hydrogel coatings to three dimensional geometries without substantially changing the manufacturing process and potentially affecting device function. Herein, we report a new redox-based crosslinking method for applying conformable hydrogel coatings with tunable thickness and chemistry. This new diffusion-mediated strategy of redox initiation and hydrogel crosslinking enabled coating of a variety of three dimensional substrates without changing the primary fabrication process. Following adsorption of the reducing agent to the construct, hydrogel coating thickness was readily controlled by immersion time with desorption and diffusion of the reducing agent initiating hydrogel crosslinking from the surface. The process was used to generate a range of hydrogel properties by varying the macromer molecular weight and concentration. In addition, we demonstrated that these coatings can be applied sequentially to generate multilayered constructs with distinct features. Finally, incorporation of proteins into the bulk of the hydrogel coating or as a final surface layer permitted the controlled introduction of bioactivity that supported cell attachment. This work provides a versatile method for assembling bioactive coatings with a simple post-fabrication process that is amenable to diverse geometric substrates and chemistries.
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Affiliation(s)
- Megan Wancura
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, USA
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Vijayan VM, Tucker BS, Hwang PTJ, Bobba PS, Jun HW, Catledge SA, Vohra YK, Thomas V. Non-equilibrium organosilane plasma polymerization for modulating the surface of PTFE towards potential blood contact applications. J Mater Chem B 2020; 8:2814-2825. [PMID: 32163093 PMCID: PMC7453349 DOI: 10.1039/c9tb02757b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report a novel and facile organosilane plasma polymerization method designed to improve the surface characteristics of poly(tetrafluoroethylene) (PTFE). We hypothesized that the polymerized silane coating would provide an adhesive surface for endothelial cell proliferation due to a large number of surface hydroxyl groups, while the large polymer networks on the surface of PTFE would hinder platelet attachment. The plasma polymerized PTFE surfaces were then systematically characterized via different analytical techniques such as FTIR, XPS, XRD, Contact angle, and SEM. The key finding of the characterization is the time-dependent deposition of an organosilane layer on the surface of PTFE. This layer was found to provide favorable surface properties to PTFE such as a very high surface oxygen content, high hydrophilicity and improved surface mechanics. Additionally, in vitro cellular studies were conducted to determine the bio-interface properties of the plasma-treated and untreated PTFE. The important results of these experiments were rapid endothelial cell growth and decreased platelet attachment on the plasma-treated PTFE compared to untreated PTFE. Thus, this new surface modification technique could potentially address the current challenges associated with PTFE for blood contact applications, specifically poor endothelial cell growth and risk of thrombosis.
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Affiliation(s)
- Vineeth M Vijayan
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA. and Department of Material Science and Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Bernabe S Tucker
- Department of Material Science and Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | | | - Pratheek S Bobba
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ho-Wook Jun
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Shane A Catledge
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Yogesh K Vohra
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Vinoy Thomas
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA. and Department of Material Science and Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Sun W, Liu W, Wu Z, Chen H. Chemical Surface Modification of Polymeric Biomaterials for Biomedical Applications. Macromol Rapid Commun 2020; 41:e1900430. [DOI: 10.1002/marc.201900430] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 02/08/2020] [Accepted: 02/16/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Sun
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Wenying Liu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Zhaoqiang Wu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Hong Chen
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
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Chang YL, Wei TC, Liu YL. Electrochemical activation of polymer chains mediated with radical transfer reactions. Chem Commun (Camb) 2020; 56:2626-2629. [PMID: 32016254 DOI: 10.1039/c9cc09768f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This work demonstrates a general and effective approach to activate inert polymer chains for further reactions through electrochemically driven radical generation and radical transfer reactions. The generated radical-containing polymer chains show capacity for further polymer reactions and preparation of polymer hybrids.
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Affiliation(s)
- Yu-Ling Chang
- Department of Chemical Engineering, National Tsing Hua University, #101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan.
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Yang T, Du Z, Qiu H, Gao P, Zhao X, Wang H, Tu Q, Xiong K, Huang N, Yang Z. From surface to bulk modification: Plasma polymerization of amine-bearing coating by synergic strategy of biomolecule grafting and nitric oxide loading. Bioact Mater 2020; 5:17-25. [PMID: 31956732 PMCID: PMC6957870 DOI: 10.1016/j.bioactmat.2019.12.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 12/23/2019] [Indexed: 12/19/2022] Open
Abstract
Integration of two or more biomolecules with synergetic and complementary effects on a material surface can help to obtain multi-functions for various biomedical applications. However, the amounts of biomolecules integrated and their physiological functions are compromised due to the limited surface anchoring sites. Herein, we propose a novel concept of film engineering strategy “from surface to bulk synergetic modification”. This new concept is realized by employing the surface amine groups of plasma polymerized allylamine (PPAm) film for grafting a molecule e.g., thrombin inhibitor, bivalirudin (BVLD), meanwhile its bulk amine groups is used as a universal depot for storing and releasing therapeutic nitric oxide (NO) gas as supplement to the functions of BVLD. It is demonstrated that such a “from surface to bulk synergetic modification” film engineering can impart the modified-substrates with anti-platelet and anti-coagulant dual functions, giving rise to a highly endothelium-mimetic thromboresistant property. We believe that our research provides a very promising strategy to deliver multifunctional surface versatilely that require NO release in combination with other properties, which will find broad biomedical applications in blood-contacting devices, and et al. Moreover, it also provides a brand-new film engineering strategy for tailoring surface multi-functionalities of a wide range of materials. A concept of “from surface to bulk synergetic modification” is proposed for tailoring surface multi-functionalities. The surface amine groups of plasma polymerized allylamine (PPAm) film were used for grafting bivalirudin. The bulk amine groups of PPAm film is utilized as the universal depots for storing and releasing nitric oxide.
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Affiliation(s)
- Tong Yang
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Zeyu Du
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Hua Qiu
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Peng Gao
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Xin Zhao
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Huaiyu Wang
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Qiufen Tu
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Kaiqin Xiong
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Nan Huang
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Zhilu Yang
- Key Laboratory of Advanced Technology for Materials of the Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
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Liu C, Zhan Z, Lü F, Song M, Lu Z, Ruan H, Xie Q. CF4 plasma-fluorinated nano-SiC promotes the charge transfer in the interface of epoxy nanocomposites. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Investigation of Plasma-Assisted Functionalization of Graphitic Materials for Epoxy Composites. NANOMATERIALS 2019; 10:nano10010078. [PMID: 31906228 PMCID: PMC7022382 DOI: 10.3390/nano10010078] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/21/2019] [Accepted: 12/30/2019] [Indexed: 11/17/2022]
Abstract
In this study we evaluated the effect of microwave vacuum plasma for the surface functionalization of graphitic fillers (graphite and graphene); we also showed the effect of the functionalization on the mechanical and electrical properties of epoxy composites. Optimized conditions of plasma treatment were defined to obtain high plasma density and increased surface hydrophilicity of the fillers, with high stability of functionalization over time and temperature. However, the extent of such treatments proved to be limited by the high temperatures involved in the curing process of the resin. The use of specific gas mixtures (He/O2) during functionalization and the use of a high surface filler (graphene) can partially limit these negative effects thanks to the higher thermal stability of the induced functionalization. As a consequence, mechanical tests on graphene filled epoxies showed limited improvements in flexural properties while electrical resistivity is slightly increased with a shift of the percolation threshold towards higher filler concentration.
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Cui H, Chen X, Bai M, Han D, Lin L, Dong M. Multipathway Antibacterial Mechanism of a Nanoparticle-Supported Artemisinin Promoted by Nitrogen Plasma Treatment. ACS APPLIED MATERIALS & INTERFACES 2019; 11:47299-47310. [PMID: 31797661 DOI: 10.1021/acsami.9b15124] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Artemisinin has excellent antimalarial, antiparasitic, and antibacterial activities; however, the poor water solubility of artemisinin crystal limits their application in antibiosis. Herein, artemisinin crystal was first composited with silica nanoparticles (SNPs) to form an artemisinin@silica nanoparticle (A@SNP). After treating with nitrogen plasma, the aqueous solubility of plasma-treated A@SNP (A@SNP-p) approaches 42.26%, which is possibly attributed to the exposure of hydrophilic groups such as -OH groups on the SNPs during the plasma process. Compared with the pristine A@SNP, the antibacterial activity of A@SNP-p against both Gram-positive and Gram-negative strains is further enhanced, and its bactericidal rate against both strains exceeded 6 log CFU/mL (>99.9999%), which is contributed by the increased water solubility of the A@SNP-p. A possible multipathway antibacterial mechanism of A@SNP was proposed and preliminarily proved by the changes of intracellular materials of bacteria and the inhibition of bacterial metabolism processes, including the HMP pathway in Gram-negative strain and EMP pathway in Gram-positive strain, after treating with A@SNP-p. These findings from the present work will provide a new view for fabricating artemisinin-based materials as antibiotics.
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Affiliation(s)
- Haiying Cui
- School of Food & Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Xiaochen Chen
- Interdisciplinary Nanoscience Center, Sino-Danish Center for Education and Research , Aarhus University , Aarhus 8000 , Denmark
| | - Mei Bai
- School of Food & Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Dong Han
- National Center for Nanoscience and Technology , Beijing , China 100190
| | - Lin Lin
- School of Food & Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center, Sino-Danish Center for Education and Research , Aarhus University , Aarhus 8000 , Denmark
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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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Gao A, Liao Q, Xie L, Wang G, Zhang W, Wu Y, Li P, Guan M, Pan H, Tong L, Chu PK, Wang H. Tuning the surface immunomodulatory functions of polyetheretherketone for enhanced osseointegration. Biomaterials 2019; 230:119642. [PMID: 31787332 DOI: 10.1016/j.biomaterials.2019.119642] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/14/2019] [Accepted: 11/19/2019] [Indexed: 12/31/2022]
Abstract
The adverse macrophage-mediated immune response elicited by the surface of polyetheretherketone (PEEK) is responsible for the formation of fibrous encapsulation and resulting inferior osseointegration of PEEK implants in the dental and orthopedic fields. Therefore, endowing the PEEK surface with immunomodulatory ability is an appealing strategy to enhance implant-bone integration. Herein, a reliable and cost-effective method to construct adherent films with tunable nanoporous structures on PEEK is described. The functionalized surface not only suppresses the acute inflammatory response of macrophages, but also provides a favorable milieu for osteogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs). Whole genome expression analysis reveals that the suppression effect arises from synergistic inhibition of focal adhesion, Toll-like receptor, and NOD-like receptor signaling pathways, as well as the attenuating loop through the JAK-STAT and TNF signaling pathways in macrophages. Further in vivo studies confirm that the functionalized surface induces less fibrous capsule formation and an improved bone regeneration. The nanoporous films fabricated on PEEK harmonize the early macrophage-mediated inflammatory response and subsequent hBMSCs-centered osteogenic functions consequently yielding superior osseointegration.
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Affiliation(s)
- Ang Gao
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
| | - Qing Liao
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Lingxia Xie
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Guomin Wang
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
| | - Wei Zhang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yuzheng Wu
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Penghui Li
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
| | - Min Guan
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Haobo Pan
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Liping Tong
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China.
| | - Huaiyu Wang
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
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Meng X, Ma Z, Ma G, Sheng J. Preparation and rheological study of pentaerythritol triacrylate grafted onto polypropylene induced by air plasma. J Appl Polym Sci 2019. [DOI: 10.1002/app.48054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiao‐Mei Meng
- School of Materials Science and Engineering, and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University Tianjin 300072 China
| | - Zhe Ma
- School of Materials Science and Engineering, and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University Tianjin 300072 China
| | - Gui‐Qiu Ma
- School of Materials Science and Engineering, and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University Tianjin 300072 China
| | - Jing Sheng
- School of Materials Science and Engineering, and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University Tianjin 300072 China
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Vijayan VM, Tucker BS, Baker PA, Vohra YK, Thomas V. Non-equilibrium hybrid organic plasma processing for superhydrophobic PTFE surface towards potential bio-interface applications. Colloids Surf B Biointerfaces 2019; 183:110463. [PMID: 31493629 DOI: 10.1016/j.colsurfb.2019.110463] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/02/2019] [Accepted: 08/26/2019] [Indexed: 01/02/2023]
Abstract
Superhydrophobic surfaces have gained increased attention due to the high water-repellency and self-cleaning capabilities of these surfaces. In the present study, we explored a novel hybrid method of fabricating superhydrophobic poly(tetrafluoroethylene) (PTFE) surfaces by combining the physical etching capability of oxygen plasma with the plasma-induced polymerization of a organic monomer methyl methacrylate (MMA). This novel hybrid combination of oxygen-MMA plasma has resulted in the generation of superhydrophobic PTFE surfaces with contact angle of 154°. We hypothesized that the generation of superhydrophobicity may be attributed to the generation of fluorinated poly(methyl methacrylate) (PMMA) moieties formed by the combined effects of physical etching causing de-fluorination of PTFE and the subsequent plasma polymerization of MMA. The plasma treated PTFE surfaces were then systematically characterized via XPS, FTIR, XRD, DSC and SEM analyses. The results have clearly shown a synergistic effect of the oxygen/MMA combination in comparison with either the oxygen plasma alone or MMA vapors alone. Furthermore, the reported new hybrid combination of Oxygen-MMA plasma has been demonstrated to achieve superhydrophobicity at lower power and short time scales than previously reported methods in the literature. Hence the reported novel hybrid strategy of fabricating superhydrophobic PTFE surfaces could have futuristic potential towards biointerface applications.
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Affiliation(s)
- Vineeth M Vijayan
- Center for Nanoscale Materials and Biointergration, College of Arts and Sciences, University of Alabama at Birmingham, 1300 University Blvd. CH 386 Birmingham, AL 35294, United States; Polymers & Healthcare Materials/ Devices, Department of Material Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue SouthBirmingham, AL 35294, United States
| | - Bernabe S Tucker
- Polymers & Healthcare Materials/ Devices, Department of Material Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue SouthBirmingham, AL 35294, United States
| | - Paul A Baker
- Center for Nanoscale Materials and Biointergration, College of Arts and Sciences, University of Alabama at Birmingham, 1300 University Blvd. CH 386 Birmingham, AL 35294, United States
| | - Yogesh K Vohra
- Center for Nanoscale Materials and Biointergration, College of Arts and Sciences, University of Alabama at Birmingham, 1300 University Blvd. CH 386 Birmingham, AL 35294, United States
| | - Vinoy Thomas
- Center for Nanoscale Materials and Biointergration, College of Arts and Sciences, University of Alabama at Birmingham, 1300 University Blvd. CH 386 Birmingham, AL 35294, United States; Polymers & Healthcare Materials/ Devices, Department of Material Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue SouthBirmingham, AL 35294, United States.
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Sohail M, Ashfaq B, Azeem I, Faisal A, Doğan SY, Wang J, Duran H, Yameen B. A facile and versatile route to functional poly(propylene) surfaces via UV-curable coatings. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.104366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Cui H, Gu Z, Chen X, Lin L, Wang Z, Dai X, Yang Z, Liu L, Zhou R, Dong M. Stimulating antibacterial activities of graphitic carbon nitride nanosheets with plasma treatment. NANOSCALE 2019; 11:18416-18425. [PMID: 31576862 DOI: 10.1039/c9nr03797g] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
As a widely studied photoactive antibacterial nanomaterial, the intrinsic antibacterial traits of graphitic carbon nitride (g-C3N4) as a two-dimensional nanomaterial have not been reported so far. Herein, nitrogen-plasma-treated g-C3N4 (N-g-C3N4) nanosheets and their influence on bactericidal characteristics are investigated. Bactericidal rates of more than 99% have been successfully achieved for 8 kinds of foodborne pathogenic bacteria by N-g-C3N4 with 8 h incubation in the dark. The achieved rates are percentage wise 10 times higher than those for pristine g-C3N4. Cell rupture caused by direct mechanical contact between g-C3N4 nanosheets and cell membranes is observed. X-ray photoelectron spectroscopy revealed a substantial loss of surface defects and nitrogen vacancies in N-g-C3N4. Molecular dynamics simulations further indicated that the largely sealed defects of N-g-C3N4 enhanced the electrostatic attraction between inherent pores and lipid heads; thus, further insertion of N-g-C3N4 was promoted, resulting in enhanced antibacterial activity. This study establishes novel fabrication and application strategies for carbon based antibacterial nanomaterials.
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Affiliation(s)
- Haiying Cui
- School of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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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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