Environment multi-responsive aqueous organosilicon material and preparation method thereof

A responsive, organosilicon technology, applied in the field of new multi-responsive polysiloxane functional materials, environmental multi-responsive water-based silicone materials and their preparation fields, can solve problems such as instability of alkoxy groups, and achieve high conversion rate , the method is reliable, the effect of low cost

Active Publication Date: 2016-02-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of functionalization of small molecular silanes, traditional chemical modification methods are greatly limited, because the alkoxy groups in small molecular silanes are unstable and easy to react with small molecules generated during the modification process, etc.

Method used

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  • Environment multi-responsive aqueous organosilicon material and preparation method thereof
  • Environment multi-responsive aqueous organosilicon material and preparation method thereof
  • Environment multi-responsive aqueous organosilicon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation method of environmental multi-responsiveness water-based organosilicon material comprises the following steps:

[0039] (1) Mix the aminopropylsilane coupling agent and the temperature-responsive monomer in an organic solvent at room temperature at a molar ratio of 1:1, react with amine-ene for 2 to 4 days, remove the organic solvent, and obtain a temperature-responsive monomer Modified silane coupling agent;

[0040] The aminopropylsilane coupling agent is selected from: one of aminopropylmethyldiethoxysilane;

[0041] The temperature-responsive monomer is selected from: N-isopropylacrylamide;

[0042] In the step (1), the organic solvent is selected from: dichloromethane;

[0043] (2) Mix the temperature-responsive monomer-modified silane coupling agent prepared in step (1) with dimethyldiethoxysilane in a molar ratio of 10:0, and add 2 times the molar ratio of the silane coupling agent water, 0.2% potassium hydroxide and 1% dimethyl sulfoxide, heat...

Embodiment 2

[0051] The preparation method of environmental multi-responsiveness water-based organosilicon material comprises the following steps:

[0052] (1) Mix the aminopropylsilane coupling agent and the temperature-responsive monomer in an organic solvent at room temperature at a molar ratio of 5:2, react with amine-ene for 2 to 4 days, remove the organic solvent, and obtain a temperature-responsive monomer Modified silane coupling agent;

[0053] The aminopropylsilane coupling agent is selected from: one of aminopropylmethyldiethoxysilane;

[0054] The temperature-responsive monomer is selected from: N-isopropylacrylamide;

[0055] The organic solvent is selected from: dichloromethane.

[0056] (2) The temperature-responsive monomer-modified silane coupling agent prepared in step (1) is mixed with the aminopropylsilane coupling agent in a molar ratio of 10:0, and 2 times the molar ratio of the silane coupling agent is added. Water, 0.2% potassium hydroxide and 1% dimethyl sulfoxi...

Embodiment 3

[0064] The preparation method of environmental multi-responsiveness water-based organosilicon material comprises the following steps:

[0065] (1) Mix the aminopropylsilane coupling agent and the temperature-responsive monomer in an organic solvent at room temperature at a molar ratio of 5:1, react with amine-ene for 4 days, remove the organic solvent, and obtain a temperature-responsive monomer-modified A silane coupling agent;

[0066] The aminopropylsilane coupling agent is selected from: aminopropylmethyldimethoxysilane;

[0067] The temperature-responsive monomer is selected from: N-isopropylacrylamide;

[0068] Described organic solvent is selected from: trichloromethane;

[0069] (2) The temperature-responsive monomer-modified silane coupling agent prepared in step (1) is mixed with the aminopropylsilane coupling agent in a molar ratio of 10:0, and 2 times the molar ratio of the silane coupling agent is added. Water, 0.2% potassium hydroxide and 1% dimethyl sulfoxide...

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Abstract

The present invention relates to an environment multi-responsive aqueous organosilicon material and a preparation method thereof, wherein the environment multi-responsive aqueous organosilicon material has the following structural formula. The present invention further relates to the preparation method of the environment multi-responsive aqueous organosilicon material. According to the present invention, the multi-responsive polysiloxane function material using Si-O-Si as the main chain is firstly prepared, is completely water soluble when the temperature is less than the critical temperature, and further has characteristics of wide response range and high response sensitivity, wherein the phase transition process is generally generated in a range of 0.2-0.5 DEG C.

Description

technical field [0001] The invention relates to an environmental multi-responsive water-based organic silicon material and a preparation method thereof, in particular to a novel multi-responsive polysiloxane functional material prepared by hydrolysis and condensation, belonging to the technical field of functional polysiloxane and functional polymers . Background technique [0002] Polysiloxane silicone material has the characteristics of high chain flexibility, low surface energy, good air permeability, non-toxicity, physiological inertness and biocompatibility, and has become an indispensable new functional material. Materials and medical treatment and other fields have been widely used. However, due to its hydrophobicity and environmental inertness, traditional polysiloxanes can no longer meet the needs in terms of controlled release of drugs and precise clinical applications. [0003] When affected by changes in external environmental conditions, some properties of sti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/26
CPCC08G77/26
Inventor 冯圣玉李树生
Owner SHANDONG UNIV
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