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Method for preparing polymer multistage pattern through ultrasonic-assisted treatment

An ultrasound-assisted and ultrasonic treatment technology is applied in the field of preparing advanced wrinkle patterns on the surface of polyaniline, achieving the effects of strong universality, large-area controllable construction, and easy operability

Inactive Publication Date: 2017-08-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the preparation of surface patterns by ultrasonic treatment.

Method used

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  • Method for preparing polymer multistage pattern through ultrasonic-assisted treatment
  • Method for preparing polymer multistage pattern through ultrasonic-assisted treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of multiphase composite wrinkled complete PANI membrane on the PDMS surface treated by OP selected area includes the following steps:

[0022] Step 1. After mixing the PDMS prepolymer and the crosslinking agent according to the mass ratio of 10:1, pour it into a vessel, and stir it fully with a glass rod to obtain a uniform mixture;

[0023] Step 2. The mixture obtained in Step 1 is subjected to vacuum degassing treatment for 1.5 hours, and placed in a constant temperature blast drying oven at 70° C. for 4 hours to be cured to obtain a PDMS elastomer;

[0024] Step 3. Cut the PDMS elastomer obtained in step 2 into a 3cm×1cm PDMS elastomer strip sample for later use; after the surface of the PDMS elastomer strip sample is covered with a copper mesh mask with a micro pattern, place Carry out OP treatment in the OP washing machine, the PDMS elastomer strip sample is processed for a certain period of time (as long as it is more than 1 minute), and then the c...

Embodiment 2

[0028] A method for preparing polymer multilevel patterns by ultrasonic-assisted treatment, comprising the following steps:

[0029] The complete PANI film (i.e. PDMS elastomer strip sample) that embodiment 1 obtains multi-phase composite wrinkle is immersed in the beaker that fills 1M hydrochloric acid solution, then this beaker is placed in ultrasonic cleaning machine, at specific power and Ultrasonic treatment is carried out at a certain time, wherein, the power is 40KHz, and the time is 3 minutes. Take the sample out of the beaker, OP treatment area (such as figure 2 Middle D 1 The PANI film in the area shown) is selectively peeled off from the PDMS surface due to ultrasonic cavitation, while the PANI wrinkled film in the non-OP treated area remains, and then a PANI film with an advanced pattern structure is obtained. The optical microscope picture is as follows figure 2 shown.

[0030] In the present invention, various advanced patterned PANI films can be obtained by...

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Abstract

The invention discloses a method for preparing a polymer multistage pattern through ultrasonic-assisted treatment. The method comprises the following steps: selectively stripping a PANI membrane in a specific region from the surface of PDMS by using a PDMS sample with a PANI wrinkle membrane grown in a selected region of an ultrasonic treatment surface, so that a multi-stage patterned PANI membrane is obtained; carrying out in situ deposition and growth of PANI on a PDMS base subjected to OP selective region treatment in advance, so that a multi-phase composite PANI complete membrane with advanced morphology is formed; and further carrying out ultrasonic-assisted treatment on the complete membrane, and due to difference of a binding force, selectively stripping the membrane in an OP treatment region from the base, so that the patterned PANI higher-order structure thin film is prepared. By changing the shape and size of a mask in the OP treatment, multiple different PANI advanced patterns can be obtained. The novel ultrasonic-assisted method combined from bottom to top and from top to bottom opens up a new path for preparation of a patterned surface.

Description

technical field [0001] The invention relates to surface pattern preparation technology, in particular to a process method for preparing high-level wrinkle patterns on polyaniline surfaces. Background technique [0002] In recent years, more and more people have paid attention to patterned polymer preparation. It has been found that microstructured polymer materials can not only improve their application performance, but also produce new properties that macroscopic materials do not have. Multi-level and multi-scale patterned polymer materials are expected to play an important role in the fields of cell culture, tissue engineering and surface engineering. Among many patterning techniques, surface wrinkling of thin films due to interfacial stress relaxation, as a novel surface patterning technique, has attracted great attention in recent years. Meanwhile, sonication is a widely used technique. The effect of ultrasonic treatment mainly comes from cavitation. Based on the str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/16C08J7/00C08J3/24
CPCC08J3/24C08J7/00C08J7/12C08J7/16C08J2383/04
Inventor 鲁从华谢继勋
Owner TIANJIN UNIV