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Zhao Z, Hou Y, Zhang H, Guo J, Wang J. A PEDOT: PSS/GO fiber microelectrode fabricated by microfluidic spinning for dopamine detection in human serum and PC12 cells. Mikrochim Acta 2024; 191:362. [PMID: 38822867 DOI: 10.1007/s00604-024-06415-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 05/04/2024] [Indexed: 06/03/2024]
Abstract
Rapid and accurate in situ determination of dopamine is of great significance in the study of neurological diseases. In this work, poly (3,4-ethylenedioxythiophene): poly (styrenesulfonic acid) (PEDOT: PSS)/graphene oxide (GO) fibers were fabricated by an effective method based on microfluidic wet spinning technology. The composite microfibers with stratified and dense arrangement were continuously prepared by injecting PEDOT: PSS and GO dispersion solutions into a microfluidic chip. PEDOT: PSS/GO fiber microelectrodes with high electrochemical activity and enhanced electrochemical oxidation activity of dopamine were constructed by controlling the structure composition of the microfibers with varying flow rate. The fabricated fiber microelectrode had a low detection limit (4.56 nM) and wide detection range (0.01-8.0 µM) for dopamine detection with excellent stability, repeatability, and reproducibility. In addition, the PEDOT: PSS/GO fiber microelectrode prepared was successfully used for the detection of dopamine in human serum and PC12 cells. The strategy for the fabrication of multi-component fiber microelectrodes is a new and effective approach for monitoring the intercellular neurotransmitter dopamine and has high potential as an implantable neural microelectrode.
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Affiliation(s)
- Zexu Zhao
- Colleges of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Yang Hou
- Colleges of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Hao Zhang
- Colleges of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Jiahao Guo
- Colleges of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Jinyi Wang
- Colleges of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China.
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Wu B, Zheng X, Xu W, Ren Y, Leng H, Liang L, Zheng D, Chen J, Jiang H. β-Nucleated Polypropylene: Preparation, Nucleating Efficiency, Composite, and Future Prospects. Polymers (Basel) 2023; 15:3107. [PMID: 37514497 PMCID: PMC10383444 DOI: 10.3390/polym15143107] [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: 06/12/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The β-crystals of polypropylene have a metastable crystal form. The formation of β-crystals can improve the toughness and heat resistance of a material. The introduction of a β-nucleating agent, over many other methods, is undoubtedly the most reliable method through which to obtain β-PP. Furthermore, in this study, certain newly developed β-nucleating agents and their compounds in recent years are listed in detail, including the less-mentioned polymer β-nucleating agents and their nucleation characteristics. In addition, the various influencing factors of β-nucleation efficiency, including the polymer matrix and processing conditions, are analyzed in detail and the corresponding improvement measures are summarized. Finally, the composites and synergistic toughening effects are discussed, and three potential future research directions are speculated upon based on previous research.
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Affiliation(s)
- Bo Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Xian Zheng
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Wenjie Xu
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Yanwei Ren
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Haiqiang Leng
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Linzhi Liang
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - De Zheng
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Jun Chen
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
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Solorzano-Ojeda ED, Sánchez-Valdes S, Ramos-deValle LF, Betancourt-Galindo R, da Silva L, Fernández-Tavizón S, Hernández-Gámez JF, Pérez-Camacho O, Ramírez-Vargas E, Morales-Acosta D, Rodríguez-González JA, Borjas-Ramos JJ. Effect of ionic liquid on graphene decorated with copper nanostructure dispersion towards silicon/graphene/copper composites with enhanced thermal, electrical and antimicrobial properties. IRANIAN POLYMER JOURNAL 2021. [PMCID: PMC8454297 DOI: 10.1007/s13726-021-00980-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
| | - Saúl Sánchez-Valdes
- Centro de Investigación en Química Aplicada, 25294 Saltillo, Coahuila Mexico
| | | | | | - Luciano da Silva
- Centro de Investigación en Química Aplicada, 25294 Saltillo, Coahuila Mexico
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Xu Q, Wu L, Yan X, Zhang S, Dong L, Su Z, Zhong T, Jiang C, Chen Y, Jiang M, Liu P. Halogen-Free Flame Retardant Polypropylene Fibers with Modified Intumescent Flame Retardant: Preparation, Characterization, Properties and Mode of Action. Polymers (Basel) 2021; 13:polym13152553. [PMID: 34372156 PMCID: PMC8347993 DOI: 10.3390/polym13152553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 11/19/2022] Open
Abstract
A novel intumescent flame retardant (IFR) agent designated as Dohor-6000A has been used to prepare halogen-free flame retardant polypropylene (PP) fibers via melting spinning. Before being blended with PP resin, a surface modification of Dohor-6000A was carried out to improve its compatibility with the PP matrix. The rheological behavior of flame retardant Dohor-6000A/PP resin, the structure, morphology, mechanical properties, flammability of the Dohor-6000A/PP fibers were studied in detail, as well as the action mode of flame retardant. X-ray diffraction (XRD) showed that the addition of Dohor-6000A did not damage the crystal as well as the orientation structure of PP matrix, which was helpful to the maintenance of mechanical properties. The presence of the IFR significantly improved the flame retardant performance and thermal stability of PP fibers. When the content of Dohor-6000A reached 25%, the fibers displayed a limiting oxygen index (LOI) value of 29.1% and good melt-drop resistance. Moreover, the peak heat release rate (PHRR) and total heat release (THR) from microscale combustion colorimetry (MCC) tests were decreased by 26.0% and 16.0% in comparison with the same conditions for pure PP fibers. In the condensed phase, the IFR promoted a carbonization process and promoted the formation of a glassy or stable foam protective layer on the surface of the polymer matrix. In addition, the IFR decomposed endothermically to release of non-combustible gases such as NH3 and CO2 which dilutes the combustible gases in the combustion zone.
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Affiliation(s)
- Qibin Xu
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Lei Wu
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Xiang Yan
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Shengchang Zhang
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Linan Dong
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 401120, China;
| | - Zexi Su
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Tianhaoyue Zhong
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Chunhui Jiang
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Yuan Chen
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Mengjin Jiang
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
| | - Pengqing Liu
- College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China; (Q.X.); (L.W.); (X.Y.); (S.Z.); (Z.S.); (T.Z.); (C.J.); (Y.C.); (M.J.)
- Correspondence: ; Tel.: +86-28-8546-2013
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Gaweł A, Kuciel S. The Study of Physico-Mechanical Properties of Polylactide Composites with Different Level of Infill Produced by the FDM Method. Polymers (Basel) 2020; 12:E3056. [PMID: 33419345 PMCID: PMC7767082 DOI: 10.3390/polym12123056] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/15/2020] [Accepted: 12/17/2020] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to evaluate the changes in physical-mechanical properties of the samples manufactured by 3D printing technology with the addition of varying degrees of polylactide (PLA) infill (50, 70, 85 and 100%). Half of the samples were soaked in physiological saline. The material used for the study was neat PLA, which was examined in terms of hydrolytic degradation, crystallization, mechanical strength, variability of properties at elevated temperatures, and dissipation of mechanical energy depending on the performed treatment. A significant impact of the amount of infill on changeable mechanical properties, such as hydrolytic degradation and crystallization was observed. The FDM printing method allows for waste-free production of light weight unit products with constant specyfic strength.
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Affiliation(s)
| | - Stanisław Kuciel
- Faculty of Materials Engineering and Physics, Institute of Materials Engineering, Tadeusz Kosciuszko Cracow University of Technology, Al. Jana Pawła II 37, 31-864 Cracow, Poland;
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Soleymani Eil Bakhtiari S, Bakhsheshi-Rad HR, Karbasi S, Tavakoli M, Razzaghi M, Ismail AF, RamaKrishna S, Berto F. Polymethyl Methacrylate-Based Bone Cements Containing Carbon Nanotubes and Graphene Oxide: An Overview of Physical, Mechanical, and Biological Properties. Polymers (Basel) 2020; 12:polym12071469. [PMID: 32629907 PMCID: PMC7407371 DOI: 10.3390/polym12071469] [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: 05/19/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 02/07/2023] Open
Abstract
Every year, millions of people in the world get bone diseases and need orthopedic surgery as one of the most important treatments. Owing to their superior properties, such as acceptable biocompatibility and providing great primary bone fixation with the implant, polymethyl methacrylate (PMMA)-based bone cements (BCs) are among the essential materials as fixation implants in different orthopedic and trauma surgeries. On the other hand, these BCs have some disadvantages, including Lack of bone formation and bioactivity, and low mechanical properties, which can lead to bone cement (BC) failure. Hence, plenty of studies have been concentrating on eliminating BC failures by using different kinds of ceramics and polymers for reinforcement and also by producing composite materials. This review article aims to evaluate mechanical properties, self-setting characteristics, biocompatibility, and bioactivity of the PMMA-based BCs composites containing carbon nanotubes (CNTs), graphene oxide (GO), and carbon-based compounds. In the present study, we compared the effects of CNTs and GO as reinforcement agents in the PMMA-based BCs. Upcoming study on the PMMA-based BCs should concentrate on trialing combinations of these carbon-based reinforcing agents as this might improve beneficial characteristics.
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Affiliation(s)
- Sanaz Soleymani Eil Bakhtiari
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (S.S.E.B.); (M.R.)
| | - Hamid Reza Bakhsheshi-Rad
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (S.S.E.B.); (M.R.)
- Correspondence: or (H.R.B.-R.); (F.B.)
| | - Saeed Karbasi
- Biomaterials and Tissue Engineering Department, School of Advanced Technologes in Medicine, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran;
| | - Mohamadreza Tavakoli
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
| | - Mahmood Razzaghi
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (S.S.E.B.); (M.R.)
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, Skudai, Johor Bahru, Johor 81310, Malaysia;
| | - Seeram RamaKrishna
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore;
| | - Filippo Berto
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
- Correspondence: or (H.R.B.-R.); (F.B.)
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