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A Method for Preparation of Thermoplastic Polymer Hierarchical Structure Using Room Temperature Reverse Embossing Technology

A thermoplastic polymer and polymer technology, applied in the direction of nanotechnology, can solve the problems of complex operation, long time consumption, high equipment, etc., achieve the effect of short time consumption, avoiding the process of high temperature and high pressure energy consumption, and improving the patterning efficiency

Active Publication Date: 2019-09-13
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of high equipment, complicated operation and long time consumption in the process of preparing multi-level materials by the traditional template method, and provide a method for rapidly preparing thermoplastic polymer multi-level structures at normal temperature and normal pressure

Method used

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  • A Method for Preparation of Thermoplastic Polymer Hierarchical Structure Using Room Temperature Reverse Embossing Technology
  • A Method for Preparation of Thermoplastic Polymer Hierarchical Structure Using Room Temperature Reverse Embossing Technology
  • A Method for Preparation of Thermoplastic Polymer Hierarchical Structure Using Room Temperature Reverse Embossing Technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Dissolution of thermoplastic polymer

[0027] Solid polymethyl methacrylate (PMMA) was heated and dissolved in acetone solution by ultrasonic heating to prepare a PMMA solution with a mass concentration of 2.5%.

[0028] Step 2: Preparation of soft template

[0029] Weigh the prepolymer of polydimethylsiloxane (PDMS) and the initiator, the mass ratio is 10:1, stir and mix; The surface of a silicon template with a width of 1 μm and a spacing of 1 μm is cured at 60 ° C; after curing, the PDMS is separated from the silicon template to obtain a soft PDMS template (PDMS-1) and strips with a strip width of 1 μm and a spacing of 3 μm. PDMS soft template (PDMS-2) with a strip width of 1 μm and a pitch of 1 μm.

[0030] Step 3: Spin coating thermoplastic polymer on the surface of soft template

[0031] Under the conditions of rotation speed of 4000rpm and rotation time of 30s, the PMMA solution was spin-coated on the surface of PDMS-1 and PDMS-2 soft templates respect...

Embodiment 2

[0041] Step 1: Dissolution of thermoplastic polymer

[0042] Solid polymethyl methacrylate (PMMA) was heated and dissolved in acetone solution by ultrasonic heating to prepare a PMMA solution with a mass concentration of 2.5%.

[0043] Step 2: Preparation of soft template

[0044] Weigh the prepolymer and initiator of polydimethylsiloxane (PDMS), the mass ratio is 10:1, stir and mix; The surface of the silicon template with a width of 0.8 μm and a spacing of 0.8 μm is cured at 60 ° C; after curing, the PDMS is separated from the silicon template to obtain a soft PDMS template (PDMS-1) with a strip width of 1 μm and a spacing of 3 μm And a PDMS soft template (PDMS-3) with a grid width of 1 μm and a spacing of 1 μm.

[0045] Step 3: Spin coating thermoplastic polymer on the surface of soft template

[0046] Under the conditions of rotation speed of 4000rpm and rotation time of 30s, the PMMA solution was spin-coated on the surface of PDMS-1 and PDMS-3 soft templates respective...

Embodiment 3

[0056] Step 1: Dissolution of thermoplastic polymer

[0057] Solid polystyrene (PS) was heated and dissolved in acetone solution by ultrasonic heating, and a PS solution with a mass concentration of 2% was prepared.

[0058] Step 2: Preparation of soft template

[0059] Weigh the prepolymer and initiator of polydimethylsiloxane (PDMS), the mass ratio is 10:1, stir and mix; then cast on a silicon template with a strip width of 3 μm and a spacing of 1 μm, with a strip width of A silicon template with a width of 1.5 μm and a spacing of 0.8 μm, and a surface of a silicon template with a strip width of 0.8 μm and a spacing of 0.8 μm were cured at 60° C. After curing, the PDMS was separated from the silicon template to obtain a strip width of PDMS soft template with 1 μm and spacing of 3 μm (PDMS-1), PDMS soft template with strip width of 0.8 μm and spacing of 1.5 μm (PDMS-4) and PDMS soft template with strip width of 0.8 μm and spacing of 0.8 μm Template (PDMS-5).

[0060] Step ...

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Abstract

The invention relates to a preparation method of a thermoplastic polymer multilevel structure by using a room temperature reverse-imprinting technique. The preparation method comprises the following steps: (1) firstly, dissolving thermoplastic polymer solids in a solvent; (2) then carrying out spin coating or spraying of a thermoplastic polymer solution to the surface of a soft template; (3) making the surface of a thermoplastic polymer on the soft template in the step (2) hydrophilic; (4) finally, making the surface treated in the step (3) in contact with a substrate subjected to hydrophilic treatment at room temperature, separating the soft template from the surface of the substrate, and transferring the polymer on the surface of the soft template to the surface of the substrate; (5) repeating the steps (2) to (4), obtaining a primary structure surface constructed two-level structure in the step (4), similarly, obtaining required the multilevel structures of different levels. According to the preparation method of the thermoplastic polymer multilevel structure disclosed by using the room temperature reverse-imprinting technique related in the invention, the multilevel structures can be further applied to hydrophobic materials and anti-reflection materials.

Description

technical field [0001] The invention relates to the technical field of micro-nano processing of materials, in particular to a method for preparing a thermoplastic polymer multi-level structure by adopting a room temperature reverse embossing technology. Background technique [0002] Hierarchical structure materials refer to structural elements of different scales or different chemical components through multiple interactions. They have the characteristics of high specific surface area, high porosity and low density. , optoelectronics, lithium-ion batteries and many other fields have a wide range of applications. People have found through research that the corneas of moths are arranged in a hexagonal array with many small convex nano-arrays on them. This composite structure makes the corneas of moths exhibit a strong anti-reflection effect. By imitating the multi-level structure of the compound eyes of moths, the slow change of the refractive index from the air to the substr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/00C08J5/18C08J7/12C08L33/12C08L25/06B82Y40/00
Inventor 石刚车友新李赢王大伟倪才华王利魁桑欣欣
Owner JIANGNAN UNIV