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Preparation method of polymer nanometer column array with controllable length

A nano-column array and polymer technology, which is applied in the field of preparation of polymer nano-column arrays, can solve problems such as limitations in the scope of application, and achieve the effects of reduced surface energy, low cost, and simple preparation process

Inactive Publication Date: 2015-04-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are only suitable for the preparation of thermoplastic polymer nanopillar arrays, and the scope of application is greatly limited.

Method used

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  • Preparation method of polymer nanometer column array with controllable length
  • Preparation method of polymer nanometer column array with controllable length
  • Preparation method of polymer nanometer column array with controllable length

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, a method for preparing a length-controllable polymer nanopillar array is selected such as figure 2 The single through-hole AAO template with a pore diameter of 180nm-200nm and a pore depth of 2um was used as the original template, which was ultrasonically cleaned in deionized water, ethanol and acetone for 5 minutes, and then heated and dried at 100°C.

[0026] Such as figure 1 As shown, the specific steps are as follows:

[0027] Step 1: Fully stir and degas the PDMS prepolymer and curing agent according to the ratio of 10:1, and then spin-coat a layer of PDMS prepolymer with a thickness of about 8um on the surface of the AAO template 2 at a speed of 7000r / s 1; then put the AAO template 2 covered with PDMS prepolymer 1 into a vacuum environment for about 30 minutes, so that the PDMS prepolymer 1 fills the holes of the AAO template; then place the four AAO templates filled with PDMS prepolymer respectively Immerse in tert-butanol TBA for about 70s...

Embodiment 2

[0030] The difference between the second embodiment and the first embodiment is that the polymer fluid used in the second step is a polyimide acid (PAA) solution with a mass fraction of 16%, and a polyimide (PI) nanopillar array is prepared. A single through-hole AAO template with a pore diameter of 180nm-200nm and a pore depth of 2um was selected as the original template, which was ultrasonically cleaned in deionized water, ethanol and acetone for 5 minutes, and then heated and dried at 100°C. Such as figure 1 As shown, the specific preparation process is as follows:

[0031]Step 1: Fully stir and degas the PDMS prepolymer and curing agent according to the ratio of 10:1, and then spin-coat a layer of PDMS prepolymer with a thickness of about 8um on the surface of the AAO template 2 at a speed of 7000r / s 1; then put the AAO template 2 covered with PDMS prepolymer 1 into a vacuum environment for about 100min, so that the PDMS prepolymer 1 fills the holes of the AAO template; t...

Embodiment 3

[0034] The difference between Example 3 and Example 1 is that the polymer used in step 2 is PC, and step 2 is repeated three times using the AAO template prepared in step 1, and four sets of PC nanopillar arrays are prepared from the same AAO template. A single through-hole AAO template with a pore diameter of 180nm-200nm and a pore depth of 2um was selected as the original template. After being ultrasonically cleaned for 5 minutes in deionized water, ethanol and acetone in sequence, it was heated and dried at 100°C. Concrete preparation process is as follows:

[0035] Step 1: Fully stir and degas the PDMS prepolymer and curing agent according to the ratio of 10:1, and then spin-coat a layer of PDMS prepolymer with a thickness of about 8um on the surface of the AAO template at a speed of 7000r / s1 ; Then put the AAO template 2 covered with PDMS prepolymer 1 into a vacuum environment for about 10 minutes, so that the PDMS prepolymer 1 fills the holes of the AAO template; then i...

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Abstract

The invention discloses a preparation method of a polymer nanometer column array with controllable length. The method comprises the following steps: firstly, infiltrating an AAO template through a PDMS (Polydimethylsiloxane) polymer, dissolving a preset dosage of PDMS pre-polymer in pores by using tertiary butanol TBA after nanometer pores of the AAO template are fully filled, and then heating the AAO template to obtain an AAO template with decreased pore depth after the PDMS pre-polymer is cured; and then, infiltrating the AAO template filled with PDMS through polymer fluid; after the polymer is cured, demolding to obtain the polymer nanometer column array. The length of the polymer nanometer column array prepared by the method of the invention does not depend on the pore depth of the original template, the template can be both infiltrated by polymer fused mass and polymer solution to prepare the nanometer column array, and the adopted template can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of preparation of polymer nano-column arrays, in particular to a preparation method of polymer nano-column arrays with controllable length. Background technique [0002] In recent years, vertically aligned polymer nanopillar arrays have been widely used in the fields of anti-reflection coatings, drug delivery, biomimetic gecko foot dry adhesives, and surface modification. Templating methods, especially the preparation of polymer nanopillar arrays using porous anodized aluminum oxide (AAO) templates, have received extensive attention. This method uses the wettability of the polymer to the template to replicate the nanostructure of the AAO template, so adjusting the size (diameter, pore depth) of the AAO can adjust the size (diameter, length) of the polymer nanocolumn. However, the preparation of AAO Complicated and time-consuming. [0003] There is a research group that uses the wetting time of the polymer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/00B82Y40/00C08L25/06C08L69/00C08L33/12C08L23/12C08L79/08C08L63/00C08L67/02C08L61/16C08L81/06
Inventor 叶雄英王敏冯金扬
Owner TSINGHUA UNIV