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Porous polymer hydrophobic film subjected to dye sensitization applied to liquid transfer

A porous polymer and dye sensitization technology, applied in transfer printing, printing, printing technology, etc., can solve the problems of poor flexibility of porous films, and achieve innovative and application-worthy effects

Inactive Publication Date: 2015-05-20
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the poor flexibility of existing porous films prepared from inorganic photoconductor materials, thereby providing a dye-sensitized porous polymer hydrophobic film that can be applied to liquid transfer to achieve photoelectric co-stimulation , to precisely control the wettability of the surface of the porous polymer hydrophobic film to achieve patterned wettability

Method used

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  • Porous polymer hydrophobic film subjected to dye sensitization applied to liquid transfer
  • Porous polymer hydrophobic film subjected to dye sensitization applied to liquid transfer
  • Porous polymer hydrophobic film subjected to dye sensitization applied to liquid transfer

Examples

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Effect test

Embodiment 1

[0036] (1) Dissolving the polymer with a weight average molecular weight of 23400 (taken from the Hong Kong University of Science and Technology) shown in Formula 1 into a chloroform solvent to form a polymer film-forming solution with a mass concentration of 0.5%;

[0037] (2) Evenly coat the polymer film-forming solution obtained in step (1) on the cleaned ITO glass in the reaction chamber, and then blow nitrogen gas carrying water vapor into the reaction chamber at a temperature of 25±1°C ( The flow rate of nitrogen is 1L / min), so that the reaction chamber forms an ambient humidity of 80%. While the chloroform solvent in the polymer film-forming solution is volatilizing, water vapor is condensed on the polymer film-forming solution along with the volatilization of the chloroform solvent. The surface of the solution forms water droplets and enters the polymer film-forming solution. After the chloroform solvent is completely volatilized, the obtained polymer solid containing w...

Embodiment 2

[0039] Basically identical with embodiment 1, just adopting the weight-average molecular weight shown in formula 1 is that the polymer (taken from Hong Kong University of Science and Technology) of 23400 is dissolved in the chloroform solvent and is made into the polymer film-forming solution that mass concentration is 2%; A porous polymer film with a thickness of 10.8-13.6 μm and a honeycomb micro-pore structure can be obtained on ITO glass; the success rate of film formation is 60%. Among them: the pore diameter of the micropores in the porous polymer film with a honeycomb micropore structure that has been successfully obtained is 0.6-1.1 μm, and the contact angle between the surface of the porous polymer film with a honeycomb micropore structure and water is 116.4° .

Embodiment 3

[0041] (1) Dissolving the polymer with a weight average molecular weight of 23400 (taken from the Hong Kong University of Science and Technology) shown in Formula 1 into a chloroform solvent to form a polymer film-forming solution with a mass concentration of 1%;

[0042] (2) The polymer film-forming solution obtained in step (1) is evenly coated on the cleaned ITO glass in the reaction chamber to prepare a porous polymer film with a honeycomb micro-pore structure and the same method as in Example 1. Among them, a porous polymer film with a honeycomb micro-channel structure with a thickness of 7.2-10.6 μm can be obtained on ITO glass, and the success rate of film formation is 90%. Among them: the porous polymer film with a honeycomb micro-channel structure has been successfully obtained The pore size of the micro-pores in the polymer film is 0.7-1.2 μm; the contact angle between the surface of the film and water is 115.3°, as figure 1 A photograph of the contact angle between...

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Abstract

The invention relates to a film applied to liquid transfer, and particularly relates to a porous polymer hydrophobic film subjected to dye sensitization applied to liquid transfer. The porous polymer hydrophobic film disclosed by the invention is prepared through the manner that a porous polymer film with a honeycomb micron porous structure is prepared from a polymer shown in a formula 1 by using a breath figure method, the porous polymer film is sensitized by using a N3 dye shown in a formula 2, and the porous polymer film is subjected to 1H, 1H, 2H, 2H-perfluorooctyl trimethoxysilane surface modification treatment. The porous polymer hydrophobic film subjected to the dye sensitization applied to liquid transfer disclosed by the invention has a infiltration response to photoelectric stimulation, and through photoelectric synergic stimulation, the photoelectric infiltration of the surface of the film can be accurately adjusted so as to realize pattern infiltration, and therefore, the film can be applied to liquid transfer.

Description

technical field [0001] The present invention relates to a film for liquid transfer, in particular to a dye-sensitized porous polymer hydrophobic film for liquid transfer. Background technique [0002] The wettability of solid surfaces shows promising applications in controlled drug release, motivating systems, and bioseparation. The transition of the solid surface from a superhydrophobic state to a hydrophilic state can be controlled by applying external excitation conditions such as light, electricity, or heat. Infiltration control under single excitation often has the disadvantages of slow response and poor control flexibility, which limits its application in complex conditions. In order to achieve a more effective control of the wettability of the solid surface, the mutual synergistic control between multiple excitations, especially the application of photoelectric synergistic excitation, will make the control of the wettability of the solid surface more intelligent and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00C08J9/36C08J9/28D06P5/24
Inventor 李牧忱衡利苹江雷
Owner INST OF CHEM CHINESE ACAD OF SCI