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A material with adjustable surface hydrophilicity/hydrophobicity and its preparation method

A hydrophobic and hydrophilic technology, applied in rayon manufacturing, filament/thread forming, physical treatment, etc., can solve the problems of inefficiency, change of material surface properties, etc., to achieve increased adhesion rate, reversible adjustment, material surface affinity Modulation of water/hydrophobic properties for efficient effect

Active Publication Date: 2020-11-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is reversible, it can only slightly change the surface properties of the material, so it is not efficient

Method used

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  • A material with adjustable surface hydrophilicity/hydrophobicity and its preparation method
  • A material with adjustable surface hydrophilicity/hydrophobicity and its preparation method
  • A material with adjustable surface hydrophilicity/hydrophobicity and its preparation method

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Embodiment 1

[0059] A material with adjustable surface hydrophilicity / hydrophobicity, the preparation method of which comprises the steps of:

[0060] S1: Synthesis of α-CD-C 12 and γ-CD-C 12

[0061] (1) Co-dissolve 24 equivalents of triphenylphosphine and 24 equivalents of bromine in DMF, then add 1.3 equivalents of α-CD or γ-CD, and react at 80°C for 15 hours;

[0062] (2) Remove half of the solvent, and add a methanol solution of sodium methoxide to the system while lowering to room temperature. After keeping at room temperature for 30 minutes, pour the solution into ice water, collect the precipitate and wash to obtain α-CD-Br or γ-CD- Br;

[0063] (3) 3 equivalents of 1-mercapto n-dodecane of Br on α-CD-Br or γ-CD-Br and 1 equivalent of 1-mercapto n-dodecane of NaOH were dissolved in DMF, at room temperature After standing for 1 hour, add α-CD-Br or γ-CD-Br and store at 80°C for 3 days; then cool the system down to room temperature and add it to water, collect the precipitate to ...

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Abstract

The invention discloses a material with adjustable surface hydrophilicity / hydrophobicity and a preparation method thereof. When preparing the material, α-CD-C is firstly synthesized 12 and γ‑CD‑C 12 ; then α‑CD‑C 12 , γ‑CD‑C 12 and PCL were dissolved in N-methylpyrrolidone, and PCL / α-CD-C was obtained by electrospinning 12 / γ‑CD‑C 12 Composite material; then Azo‑PS and ipAzo‑PEG are co-dissolved in a mixed solution obtained by mixing water and acetone at a volume ratio of 2:1 by a mass ratio of 1:1 to obtain a soaking solution; then PCL / α‑PEG CD‑C 12 / γ‑CD‑C 12 The composite material is immersed in the soaking solution, and irradiated with ultraviolet light, blue light, green light or red light for 30-40 minutes to obtain materials with different hydrophilic / hydrophobic properties on the surface. By adopting the invention in the present invention, the purpose of efficiently and reversibly completing the control of the hydrophilicity / hydrophobicity of the material surface through external light stimulation can be achieved.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a material with adjustable surface hydrophilicity / hydrophobicity and a preparation method thereof. Background technique [0002] The hydrophilic / hydrophobic property of the material surface is one of the important properties of the material, which directly affects many properties of the material, such as wettability, surface work function, surface energy, biocompatibility, etc. Therefore, the dynamic and reversible control of the hydrophilic / hydrophobic properties of the material surface can realize the control of various properties of the material, which will help the development and preparation of future smart materials. External stimuli such as pH, heat, light, and electricity have been widely used as a means to dynamically control the hydrophilic / hydrophobic properties of materials. However, compared with pH, ​​heat and electricity, light, as a non-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M10/10D01F6/92D01F1/10D04H1/728D01D5/00D06M101/32
CPCD01D5/0015D01F1/10D01F6/92D04H1/728D06M10/10D06M2101/32
Inventor 王东升董树敏古良鸿王昱皓郑永豪
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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