Method for modifying surface of polymer substrate and polymer substrate having surface modified thereby

A surface modification and polymer technology, which is applied to the method of granulating raw materials, the device for coating liquid on the surface, special surfaces, etc., can solve the problems of unsuitable small particles, short maintenance time of hydrophilic surface, polymerization Reduce the flexibility of the material substrate and other problems, and achieve the effect of improving the effect

Active Publication Date: 2019-12-17
汉阳大学校产学协力团埃丽卡校区 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the most widely used oxygen plasma provides a superhydrophilic surface, but the maintenance time of the hydrophilic surface is short, making the surface of PDMS rough, or even forming cracks, resulting in the following problems: oxygen plasma is not suitable for micro Experiments using relatively small particles such as nanoparticles in chips
Furthermore, in the case of known fluorine compound-based coating agents for glass or plastics in the related art, it was found that the coating agent forms a hard coat after drying, so that the flexibility of the polymer substrate is reduced or the coating Destroyed by movement of the polymer substrate

Method used

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  • Method for modifying surface of polymer substrate and polymer substrate having surface modified thereby
  • Method for modifying surface of polymer substrate and polymer substrate having surface modified thereby
  • Method for modifying surface of polymer substrate and polymer substrate having surface modified thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The surface modification of embodiment 1.PDMS coins

[0047] 1.1. Plasma treatment of the surface of PDMS coins

[0048] First, a PDMS coin with a diameter of 1.5 cm and a height of 0.5 cm was fabricated and plasma-treated at room temperature under atmospheric pressure, and the plasma-treated PDMS coin was used for cleaning of organic pollutants and surface modification.

[0049] For plasma treatment, 25 sccm of argon (Ar) and 30 sccm of oxygen (O) were used at an atmospheric pressure of 1 atmosphere (760 Torr). 2 ), the formation of plasma was induced by applying a power of 700W to 800W using an RF power source, thereby reciprocatingly treating the PDMS coin with the plasma at a speed of 15mm / sec.

[0050] 1.2. Surface coating of PDMS coins using fluorine compound-containing coating agent WNP / WAF

Embodiment 12

[0051] The PDMS coins treated with plasma in Example 1.1. were taken out from the plasma reactor, and passed through the wet process at 40ml / m 2 After spraying Nano-Primer (NP, product name: CK-WNP, manufactured by CEKO, Inc., purchased as an adhesion enhancer) to have a thickness of about 10 nm to 20 nm, wet at 35 ml / m 2 The resulting product was spray-coated with WetAnti-fingerprint (WAF, product name: CK-WAF, manufactured by CEKO, Inc., which is a hydrophobic compound, purchased as a fluorine compound), and then the coated PDMS coin-shaped Let the material dry for about 1 hour (WNP / WAF method, in this case, the W before NP and AF means that the coating is performed under wet method). In this example 1.2. Nano-Primer (NP) was used as a buffer layer for enhanced adhesion.

experiment example 1

[0058] Experimental example 1. Evaluation of protein adsorption after surface modification

[0059] Prepare a 0.01% (0.1 mg / ml) FITC-BSA stock solution by dissolving FITC-BSA powder in DPBS, and place 600 μl of 0.01% FITC-BSA solution or 600 μl of DPBS solution on the surface The modified PDMS coins were then placed on the coated surface for 3 min. The PDMS coins were washed with DPBS for 1 min, then vigorously with distilled water contained in a squeeze bottle for 1 min, and their residual moisture was removed by blower. Thereafter, optical and fluorescence images of the PDMS coin surface were taken, and fluorescence quantification was performed using the ImageJ program.

[0060]As a result, it was confirmed that when the surface of the PDMS coin was coated with AF exhibiting hydrophobicity (Example 1 and Comparative Examples 1 and 2), the protein was hardly adsorbed (400%). Furthermore, when the surface of PDMS coins was coated with NPs (Comparative Example 3), cracks were...

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Abstract

The present invention relates to a method for modifying a surface of a polymer substrate. Specifically, the present invention provides a method for modifying a surface of a polymer substrate by usingplasma treatment and a coating agent containing a hydrophilic primer and a hydrophobic fluorine compound.

Description

technical field [0001] The present invention relates to a method for modifying the surface of a polymer substrate, in particular, to a method for modifying the surface of a polymer substrate using plasma, a hydrophilic primer, and a coating agent comprising a hydrophobic fluoro compound. method. Background technique [0002] Biochip means to combine bioorganic materials (such as enzymes, proteins, antibodies, DNA, microorganisms, or animal and plant cells and organs, and nerve cells and organs) with inorganic materials (such as semiconductors or glass) to Hybrid devices made in the form of existing semiconductor chips. Biochips diagnose infectious diseases or analyze genes by utilizing the unique functions of biomolecules and imitating the functions of living organisms, and are used as new functional devices for information processing. Biochips can be broadly defined to include biosensors that can be used to detect and analyze various biochemical materials, such as lab-on-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/04G01N33/543G01N33/545G01N33/68C09D127/12B01J2/30B05D3/14B05D7/02B05D7/00C08J7/043C08J7/056
CPCB05D7/02C09D7/40C09D127/12B05D3/144B05D5/086B05D2201/02B05D2401/10B05D2506/10B05D2518/12G01N33/54393C08J2383/04C08J7/123C08J7/042C08J2483/04C08J7/056C08J2427/12C08J7/043G01N33/545B05D7/24C08J7/04B01J2/30C09D183/08G01N33/68
Inventor 洪锺郁申秀贞金炫中金弘徹金正来崔炳炅金铁珉
Owner 汉阳大学校产学协力团埃丽卡校区
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