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Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System
The surface of a centrifugal microfluidic immunoassay system chip such as polymethyl methacrylate (PMMA) is often hydrophobic, which leads to problems such as poor liquid transfer efficiency and easy-to-block siphon channels, leading to bad fluid control. Therefore, surface hydrophilic modification...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9229454/ https://www.ncbi.nlm.nih.gov/pubmed/35744444 http://dx.doi.org/10.3390/mi13060831 |
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author | Shi, Yuxing Ye, Peng Wang, Chuang Yang, Kuojun Guo, Jinhong |
author_facet | Shi, Yuxing Ye, Peng Wang, Chuang Yang, Kuojun Guo, Jinhong |
author_sort | Shi, Yuxing |
collection | PubMed |
description | The surface of a centrifugal microfluidic immunoassay system chip such as polymethyl methacrylate (PMMA) is often hydrophobic, which leads to problems such as poor liquid transfer efficiency and easy-to-block siphon channels, leading to bad fluid control. Therefore, surface hydrophilic modification for such chips is necessary to improve the rapidity and sensitivity of the system. Chemical modification is commonly used, but there is little research on the hydrophilic effect of different concentrations of hydrophilic reagents. According to function requirements for different microchannels of the chip (some only need to ensure the liquid can flow into the next chamber, and some also need to ensure the function of “closing the door” during immunoassay incubation), we explored the best combination of hydrophilic reagent and concentration through experiments. Firstly, three hydrophilic reagents were used for modification. Secondly, the hydrophilic effects of different reagents and concentrations were explored by contact angle test, the influence of different modification methods on liquid transfer efficiency was characterized by residual liquid calculation in the chamber. Finally, the effect of different hydrophilic reagents on absorbance was also tested. By experimental results and comprehensively considering the stability of the modification effect and the function requirements, Tween-20 (2.0% v/v) was chosen as the modifying reagents of the first siphon valve and the second siphon valve, and TritonX-100 (2.0% v/v) was chosen for the third siphon valve, which effectively reduces the contact angle and improves the liquid transfer efficiency, leading to further improvement of the rapidity and sensitivity of the centrifugal microfluidic immunoassay system by efficient siphoning and high plasma separation efficiency (99%). |
format | Online Article Text |
id | pubmed-9229454 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92294542022-06-25 Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System Shi, Yuxing Ye, Peng Wang, Chuang Yang, Kuojun Guo, Jinhong Micromachines (Basel) Article The surface of a centrifugal microfluidic immunoassay system chip such as polymethyl methacrylate (PMMA) is often hydrophobic, which leads to problems such as poor liquid transfer efficiency and easy-to-block siphon channels, leading to bad fluid control. Therefore, surface hydrophilic modification for such chips is necessary to improve the rapidity and sensitivity of the system. Chemical modification is commonly used, but there is little research on the hydrophilic effect of different concentrations of hydrophilic reagents. According to function requirements for different microchannels of the chip (some only need to ensure the liquid can flow into the next chamber, and some also need to ensure the function of “closing the door” during immunoassay incubation), we explored the best combination of hydrophilic reagent and concentration through experiments. Firstly, three hydrophilic reagents were used for modification. Secondly, the hydrophilic effects of different reagents and concentrations were explored by contact angle test, the influence of different modification methods on liquid transfer efficiency was characterized by residual liquid calculation in the chamber. Finally, the effect of different hydrophilic reagents on absorbance was also tested. By experimental results and comprehensively considering the stability of the modification effect and the function requirements, Tween-20 (2.0% v/v) was chosen as the modifying reagents of the first siphon valve and the second siphon valve, and TritonX-100 (2.0% v/v) was chosen for the third siphon valve, which effectively reduces the contact angle and improves the liquid transfer efficiency, leading to further improvement of the rapidity and sensitivity of the centrifugal microfluidic immunoassay system by efficient siphoning and high plasma separation efficiency (99%). MDPI 2022-05-26 /pmc/articles/PMC9229454/ /pubmed/35744444 http://dx.doi.org/10.3390/mi13060831 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Shi, Yuxing Ye, Peng Wang, Chuang Yang, Kuojun Guo, Jinhong Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System |
title | Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System |
title_full | Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System |
title_fullStr | Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System |
title_full_unstemmed | Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System |
title_short | Surface Hydrophilic Modification for Chip of Centrifugal Microfluidic Immunoassay System |
title_sort | surface hydrophilic modification for chip of centrifugal microfluidic immunoassay system |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9229454/ https://www.ncbi.nlm.nih.gov/pubmed/35744444 http://dx.doi.org/10.3390/mi13060831 |
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