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Method of preparing solvent response type intelligent surface

A responsive, solvent-based technology, applied in the field of preparing solvent-responsive smart surfaces by grafting amphiphilic block copolymers with silane coupling agents, can solve the change of surface wetting characteristics and the stability response behavior of solvent-responsive smart surfaces. problems such as poor reversibility, to achieve the effects of improving stability, easy availability of raw materials, and simple operation

Inactive Publication Date: 2007-09-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of solvent-responsive intelligent surface stability and poor reversibility of response behavior, using molecular self-assembly to prepare a silane coupling agent monomolecular film on the surface of the substrate material, and then grafting an amphiphilic block copolymer, Solvent-responsive smart surfaces with reversible changes in surface wetting properties after solvent treatment

Method used

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  • Method of preparing solvent response type intelligent surface
  • Method of preparing solvent response type intelligent surface
  • Method of preparing solvent response type intelligent surface

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Preprocessing process:

[0036] The glass slides were ultrasonically cleaned in deionized water and absolute ethanol for 5 min, and then immersed in freshly prepared hot Piranha solution (98% concentrated sulfuric acid: 30% H 2 o 2 =7:3, V / V), take it out after 20min, wash it with a large amount of deionized water, and dry it with nitrogen to obtain a hydroxylated base material;

[0037] (2) Self-assembly process of silane coupling agent:

[0038] Soak the surface hydroxylated base material in 1mM silane coupling agent KH560 absolute ethanol solution for 24h, take it out and rinse it several times with absolute ethanol, then rinse it with a large amount of deionized water, dry it with nitrogen, and heat treatment at 110°C 45min, obtain the base material surface with dense monolayer cross-linked silane structure;

[0039] (3) Modification process of solvent-responsive surface:

[0040] The block copolymer PS-PVP was dissolved in tetrahydrofuran (THF) to prepare a...

Embodiment 2

[0045] (1) Preprocessing process:

[0046] Single-crystal silicon wafers were ultrasonically cleaned in deionized water and absolute ethanol for 5 min, and then immersed in freshly prepared hot Piranha solution (98% concentrated sulfuric acid: 30% H 2 o 2=7:3, V / V), take it out after 20min, wash it with a large amount of deionized water, and dry it with nitrogen to obtain a hydroxylated base material;

[0047] (2) Self-assembly process of silane coupling agent:

[0048] Soak the surface hydroxylated base material in 2mM silane coupling agent KH560 absolute ethanol solution for 12h, take it out and rinse it several times with absolute ethanol, then rinse it with a large amount of deionized water, dry it with nitrogen, and heat treatment at 110°C 45min, obtain the base material surface with dense monolayer cross-linked silane structure;

[0049] (3) Modification process of solvent-responsive surface:

[0050] The block copolymer PS-PAA was dissolved in tetrahydrofuran (THF) ...

Embodiment 3

[0055] (1) Pretreatment process:

[0056] The quartz plate was ultrasonically cleaned in deionized water and absolute ethanol for 5 min, and then immersed in freshly prepared hot Piranha solution (98% concentrated sulfuric acid: 30% H 2 o 2 =7:3, V / V), take it out after 20min, wash it with a large amount of deionized water, and dry it with nitrogen to obtain a hydroxylated base material;

[0057] (2) Self-assembly process of silane coupling agent:

[0058] Soak the surface hydroxylated base material in 2mM silane coupling agent KH560 absolute ethanol solution for 24h, take it out and rinse it several times with absolute ethanol, then rinse it with a large amount of deionized water, dry it with nitrogen, and heat treatment at 110°C 45min, obtain the base material surface with dense monolayer cross-linked silane structure;

[0059] (3) Modification process of solvent-responsive surface:

[0060] The block copolymer PS-PMA was dissolved in tetrahydrofuran (THF) to prepare a s...

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Abstract

The invention discloses a method for preparing a solvent-type smart surface. In the invention, it modifies silane coupling agent on the glass surface or silicon surface of hydroxylation by using self-assembly of molecular, and then it grafts amphiphilic triblock copolymer, and then it handles the surface with different solvent to achieve reversible changes of the wetting characteristics on the surface.

Description

technical field [0001] The invention relates to a method for preparing an intelligent surface, in particular to a method for preparing a solvent-responsive intelligent surface by grafting an amphiphilic block copolymer with a silane coupling agent. Background technique [0002] Solvent-responsive smart surface refers to that when the properties of the external solution change, in response to changes or stimuli in the external environment, the surface can selectively migrate through the chain segments to reorganize the surface structure, thereby improving the wettability and viscosity of the surface. Surfaces whose properties undergo reversible changes. It is well known that the wettability of a solid surface is closely related to its chemical composition. The greater the free energy of a solid surface, the easier it is to be wetted; the smaller the free energy of a solid surface, it is less likely to be wetted. Therefore, finding and preparing solid surfaces that contain bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08K5/5415C03C17/32C04B41/48C04B41/83C08L53/00
Inventor 乌学东朱寅史明辉
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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