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Method for preparing macromolecule ultrathin membrane nano wrinkling patterns

An ultra-thin film and polymer technology, which is applied in the field of preparing micro-nano scale patterns, can solve the problems of difficult shape maintenance, limited application, small swelling area, etc., and achieves the effect of improving simplicity and operability.

Active Publication Date: 2013-09-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the conditions of solvent swelling are not easy to control, and the swelling area is small. Not all materials are convenient for solvent swelling treatment, and the shape after solvent treatment is not easy to maintain. If the solvent volatilizes, its shape is easily destroyed.
These characteristics limit the application of this method

Method used

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  • Method for preparing macromolecule ultrathin membrane nano wrinkling patterns
  • Method for preparing macromolecule ultrathin membrane nano wrinkling patterns
  • Method for preparing macromolecule ultrathin membrane nano wrinkling patterns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First select polystyrene (PS) solvent toluene, then weigh a certain amount of polystyrene, and add a corresponding amount of toluene to make a 1wt% solution, then ultrasonic treatment accelerates the dissolution, and seal the reagent bottle for later use after dissolution is complete. The prepared solution was spin-coated to form a film, the spin-coating speed was 2000 rpm, the spin-coating time was 30s, and finally left for 24 hours to allow the solvent to evaporate completely. The spin-coated single-layer polymer film was treated with superthermal hydrogen technology to induce crosslinking on the upper layer of the polymer. The voltage of superthermal hydrogen was 300V and the treatment time was 2min. Then perform thermal annealing treatment, the annealing temperature is 130° C., and the annealing time is 6 hours. After annealing, take out the sample and allow it to cool rapidly to obtain a wrinkled pattern. wrinkle pattern as attached figure 1 shown.

Embodiment 2

[0034] First select polystyrene (PS) solvent toluene, then weigh a certain amount of polystyrene, and add a corresponding amount of toluene to make a 1wt% solution, then ultrasonic treatment accelerates the dissolution, and seal the reagent bottle for later use after dissolution is complete. The prepared solution is formed into a film by spin coating, and the substrate is a silicon wafer with grooves (see attached figure 2 ), the spin-coating speed is 2000 rpm, the spin-coating time is 30s, and finally placed for 24h to allow the solvent to evaporate completely. The spin-coated single-layer polymer film was treated with superthermal hydrogen technology to induce crosslinking on the upper layer of the polymer. The voltage of superthermal hydrogen was 300V and the treatment time was 2min. Then carry out thermal annealing treatment, the temperature of annealing is 130 ℃, the annealing time is 6h, after annealing, take out the sample and let it cool rapidly to get the wrinkle pat...

Embodiment 3

[0036]First select the solvent toluene of block polymer polystyrene isoprene triblock copolymer (SIS), yet weigh a certain amount of block polymer polystyrene isoprene triblock copolymer (SIS) , and add a corresponding amount of toluene to configure a 1wt% solution, and then ultrasonic treatment accelerates the dissolution. After the dissolution is complete, seal the reagent bottle for later use. The prepared solution was spin-coated to form a film, the spin-coating speed was 3000 rpm, the spin-coating time was 30s, and finally left for 24 hours to allow the solvent to evaporate completely. The spin-coated single-layer polymer film was treated with superthermal hydrogen technology to induce crosslinking on the upper layer of the polymer. The voltage of superthermal hydrogen was 300V and the treatment time was 5 minutes. Then carry out thermal annealing treatment, the temperature of annealing is 120 ℃, the annealing time is 6h, after annealing, take out the sample and let it co...

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Abstract

The invention discloses a method for preparing macromolecule ultrathin membrane nano wrinkling patterns. The method comprises the following steps of: step one, adding a corresponding solvent into a polymer to prepare a 1-4wt% solution, then performing ultrasonic treatment to accelerate dissolution, and sealing a reagent bottle for later use after completely dissolving; step two, forming a membrane by using a spin-coating method with the prepared solution, and at last, standing for 24 hours so as to completely volatilize the solvent; step three, processing the spin-coated single-layer polymer membrane by using a hyperthermal-hydrogen technology to induce the upper layer of the polymer to crosslink; step four, performing thermal annealing treatment, and taking out a sample after annealing to freely cool at a room temperature so as to obtain a wrinkling pattern. According to the method, the hyperthermal-hydrogen technology is adopted for inducing crosslinking, the method is effective on most polymer systems, only the polymer systems need to contain C-H keys, so a method for ultrathin membrane wrinkling, which is widely applicable to the polymer systems, is provided, and the method ensures that the surface functional groups of a material are not damaged.

Description

technical field [0001] The invention belongs to the technical field of preparing micro-nano-scale patterns, and in particular relates to a method for preparing nano-wrinkled patterns of polymer ultra-thin films. Background technique [0002] In nature, there are many complex patterns formed by spontaneous organization, in extremely small micro-nano scales, such as molecular crystallization, layered surface structure of lotus leaves, composite layered structure in shell pearls, etc.; visible to the naked eye On even larger astronomical scales, such as the rippling structures of aeolian dunes, regular arrangements of stars, or even larger arrangements of galaxies. With the continuous development of technology towards smaller, thinner and lighter, the phenomenon of micro-nano-scale spontaneous organization has received extensive attention. [0003] Instability phenomena in ultrathin-film systems, which can easily utilize spontaneously organized arrangements to form well-define...

Claims

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Application Information

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IPC IPC(8): C08J3/28C08J3/24C08J5/18C08L25/06C08L83/04C08L53/02C08L75/04C08L67/04
Inventor 傅强何亮陈枫
Owner SICHUAN UNIV
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