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Rachtanapun P, Sawangrat C, Kanthiya T, Thipchai P, Kaewapai K, Suhr J, Worajittiphon P, Tanadchangsaeng N, Wattanachai P, Jantanasakulwong K. Effect of Plasma Treatment on Bamboo Fiber-Reinforced Epoxy Composites. Polymers (Basel) 2024; 16:938. [PMID: 38611197 PMCID: PMC11013669 DOI: 10.3390/polym16070938] [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: 02/27/2024] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024] Open
Abstract
Bamboo cellulose fiber (BF)-reinforced epoxy (EP) composites were fabricated with BF subjected to plasma treatment using argon (Ar), oxygen (O2), and nitrogen (N2) gases. Optimal mechanical properties of the EP/BF composites were achieved with BFs subjected to 30 min of plasma treatment using Ar. This is because Ar gas improved the plasma electron density, surface polarity, and BF roughness. Flexural strength and flexural modulus increased with O2 plasma treatment. Scanning electron microscopy images showed that the etching of the fiber surface with Ar gas improved interfacial adhesion. The water contact angle and surface tension of the EP/BF composite improved after 10 min of Ar treatment, owing to the compatibility between the BFs and the EP matrix. The Fourier transform infrared spectroscopy results confirmed a reduction in lignin after treatment and the formation of new peaks at 1736 cm-1, which indicated a reaction between epoxy groups of the EP and carbon in the BF backbone. This reaction improved the compatibility, mechanical properties, and water resistance of the composites.
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Affiliation(s)
| | - Choncharoen Sawangrat
- Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Thidarat Kanthiya
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Parichat Thipchai
- Nanoscience and Nanotechnology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Kannikar Kaewapai
- Science and Technology Park (STeP), Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Jonghwan Suhr
- School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si 16419, Gyeonggi-do, Republic of Korea
| | - Patnarin Worajittiphon
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | | | - Pitiwat Wattanachai
- Department of Civil Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kittisak Jantanasakulwong
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand;
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Antimicrobial and mechanical performance of epoxy/graphene-based powder coatings. IRANIAN POLYMER JOURNAL 2022. [DOI: 10.1007/s13726-022-01107-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Yang B, Dong J, Bian H, Lu H, Bin D, Tang S, Song Y, Lu H. Expired Cefalexin Loaded into Mesoporous Nanosilica for Self-Healing Epoxy Coating on 304 Stainless Steel. NANOMATERIALS 2022; 12:nano12142406. [PMID: 35889630 PMCID: PMC9324246 DOI: 10.3390/nano12142406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 11/16/2022]
Abstract
A self-healing epoxy coating is creatively prepared by employing expired cefalexin loaded into mesoporous silica nanomaterials (MSNs) for corrosion protection of 304 stainless steel (304SS). A series of physical characterizations, including transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectrometer, and N2 adsorption–desorption isotherms, verified that the cefalexin successfully filled porous MSN. The corrosion resistance of the epoxy (EP) coating incorporated with the cefalexin@MSNs is investigated using a Tafel polarization curve and electrochemical impedance spectra (EIS) in a 3.5 wt.% NaCl solution. It is found that the EP-Cefalexin@MSNs coating has a higher self-corrosion voltage and a lower self-corrosion current density than EP coating. Moreover, the charge transfer resistance (Rct) value of Cefalexin@MSNs coating is twice that of EP coating after immersion for 24 h, indicating that the cefalexin@MSNs significantly enhance the corrosion resistance of the coating under long-duration immersion. The improved corrosion resistance is attributed to the densified adsorption of the cefalexin inhibiting the cathode corrosion reaction, providing a self-healing long-duration corrosion protection for 304SS.
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Affiliation(s)
- Beibei Yang
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
| | - Jiayu Dong
- Haian Institute of High-Tech Research, College of Engineering and Applied Science, Nanjing University, Nanjing 210033, China; (J.D.); (H.L.)
| | - Haifeng Bian
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210033, China;
| | - Haimin Lu
- Haian Institute of High-Tech Research, College of Engineering and Applied Science, Nanjing University, Nanjing 210033, China; (J.D.); (H.L.)
| | - Duan Bin
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
- Correspondence: (D.B.); (S.T.); (H.L.)
| | - Shaochun Tang
- Haian Institute of High-Tech Research, College of Engineering and Applied Science, Nanjing University, Nanjing 210033, China; (J.D.); (H.L.)
- Correspondence: (D.B.); (S.T.); (H.L.)
| | - Yaqiong Song
- Jiangsu Guojiao New Material Co., Ltd., Rugao 226599, China;
| | - Hongbin Lu
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
- Correspondence: (D.B.); (S.T.); (H.L.)
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Li S, Du F, Lin Y, Guan Y, Qu W, Cheng J, Wang D. Excellent anti-corrosion performance of epoxy composite coatings filled with novel N-doped carbon nanodots. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Um JG, Habibpour S, Jun YS, Elkamel A, Yu A. Development of π–π Interaction-Induced Functionalized Graphene Oxide on Mechanical and Anticorrosive Properties of Reinforced Polyurethane Composites. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06755] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jun Geun Um
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Saeed Habibpour
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Yun-Seok Jun
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario M5S 3G8, Canada
| | - Ali Elkamel
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Aiping Yu
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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Um JG, Jun Y, Elkamel A, Yu A. Engineering investigation for the size effect of graphene oxide derived from graphene nanoplatelets in polyurethane composites. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23696] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jun Geun Um
- Department of Chemical Engineering University of Waterloo Waterloo Ontario Canada
| | - Yun‐Seok Jun
- Department of Chemical Engineering University of Waterloo Waterloo Ontario Canada
| | - Ali Elkamel
- Department of Chemical Engineering University of Waterloo Waterloo Ontario Canada
| | - Aiping Yu
- Department of Chemical Engineering University of Waterloo Waterloo Ontario Canada
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Guadagno L, Naddeo C, Raimondo M, Speranza V, Pantani R, Acquesta A, Carangelo A, Monetta T. UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E962. [PMID: 30909458 PMCID: PMC6470810 DOI: 10.3390/ma12060962] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/12/2019] [Accepted: 03/19/2019] [Indexed: 11/17/2022]
Abstract
Epoxy based coatings are susceptible to ultra violet (UV) damage and their durability can be significantly reduced in outdoor environments. This paper highlights a relevant property of graphene-based nanoparticles: Graphene Nanoplatelets (GNPs) incorporated in an epoxy-based free-standing film determine a strong decrease of the mechanical damages caused by UV irradiation. The effects of UV light on the morphology and mechanical properties of the solidified nanocharged epoxy films are investigated by Atomic Force Microscopy (AFM), in the acquisition mode "HarmoniX." Nanometric-resolved maps of the mechanical properties of the multi-phase material evidence that the incorporation of low percentages, between 0.1% and 1.0% by weight, of graphene nanoplatelets (GNPs) in the polymeric film causes a relevant enhancement in the mechanical stability of the irradiated films. The beneficial effect progressively increases with increasing GNP percentage. The paper also highlights the potentiality of AFM microscopy, in the acquisition mode "HarmoniX" for studying multiphase polymeric systems.
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Affiliation(s)
- Liberata Guadagno
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, Italy.
| | - Carlo Naddeo
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, Italy.
| | - Marialuigia Raimondo
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, Italy.
| | - Vito Speranza
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, Italy.
| | - Roberto Pantani
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, Italy.
| | - Annalisa Acquesta
- Department of Chemical Engineering, Materials and Industrial Production, University of Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy.
| | - Anna Carangelo
- Department of Chemical Engineering, Materials and Industrial Production, University of Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy.
| | - Tullio Monetta
- Department of Chemical Engineering, Materials and Industrial Production, University of Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy.
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