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Controllable self-assembly method for block polymer on elastic substrate

A block polymer, self-assembly technology, applied in the field of macromolecular self-assembly, can solve problems such as expensive and hard quality

Inactive Publication Date: 2012-11-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the substrates currently used for block polymer films are hard and expensive silicon substrates

Method used

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  • Controllable self-assembly method for block polymer on elastic substrate
  • Controllable self-assembly method for block polymer on elastic substrate
  • Controllable self-assembly method for block polymer on elastic substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Cut the cured PDMS into small pieces, put them into an oxygen plasma cleaner for oxygen plasma treatment, the vacuum degree is 300 mTorr, the mid-range power is 9W, and the treatment time is 0.5 minutes;

[0022] (2) Spin-coat the toluene / tetrahydrofuran mixed solution of PS-b-PVP with a mass concentration of 0.5% on the PDMS treated above at a temperature of 20°C, a humidity of 25RH%, and a spin-coating speed of 2500rpm. the polymer film of the substrate;

[0023] (3) Put the above-prepared polymer film system into toluene / tetrahydrofuran mixed saturated steam for 3 hours and then dry it in vacuum for 2 hours; then, immerse it in ethanol for 30 minutes and dry it in vacuum; finally, use PDMS as A regular nano-scale micro-domain structure is formed on the polymer film of the substrate, which realizes the controllable self-assembly of the block polymer on the elastic substrate. The surface microstructure of the film was observed by scanning electron microscope and a...

Embodiment 2

[0025] (1) Cut the cured PDMS into small pieces, put them into an oxygen plasma cleaner for oxygen plasma treatment, the vacuum degree is 300 mTorr, the mid-range power is 9W, and the treatment time is 0.5 minutes;

[0026] (2) Spin-coat the toluene / tetrahydrofuran mixed solution of PS-b-PVP with a mass concentration of 0.5% on the PDMS treated above at a temperature of 20°C, a humidity of 25RH%, and a spin-coating speed of 2500rpm. the polymer film of the substrate;

[0027] (3) Put the above-prepared polymer film system into toluene / tetrahydrofuran mixed saturated steam for 5 hours and then dry it in vacuum for 2 hours; then, immerse it in ethanol for 30 minutes and dry it in vacuum; finally, use PDMS as A regular nano-scale micro-domain structure is formed on the polymer film of the substrate, which realizes the controllable self-assembly of the block polymer on the elastic substrate. The surface microstructure of the film was observed with a scanning electron microscope, ...

Embodiment 3

[0029] (1) Cut the cured PDMS into small pieces, put them into an oxygen plasma cleaner for oxygen plasma treatment, the vacuum degree is 300 mTorr, the mid-range power is 9W, and the treatment time is 0.5 minutes;

[0030] (2) Spin-coat the toluene / tetrahydrofuran mixed solution of PS-b-PVP with a mass concentration of 0.5% on the PDMS treated above at a temperature of 20°C, a humidity of 25RH%, and a spin-coating speed of 2000rpm. the polymer film of the substrate;

[0031] (3) Put the above-prepared polymer film system into toluene / tetrahydrofuran mixed saturated steam for 3 hours and then dry it in vacuum for 2 hours; then, immerse it in ethanol for 30 minutes and dry it in vacuum; finally, use PDMS as A regular nano-scale micro-domain structure is formed on the polymer film of the substrate, which realizes the controllable self-assembly of the block polymer on the elastic substrate. The surface microstructure of the film was observed with a scanning electron microscope, ...

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Abstract

The invention provides a controllable self-assembly method for a block polymer on an elastic substrate. The method comprises the following steps of: slicing a cured polydimethylsiloxane (PDMS) elastomer, and then treating with oxygen plasma for 0.5 to 2 minutes; spinning a 0.5wt% methylbenzene / tetrahydrofuran mixed solution of polystyrene-b-polyvinyl pyrrolidone (PS-b-PVP) onto the treated PDMS to form a polymer film using the PDMS as a substrate; treating the film for 3 to 5 hours in methylbenzene / tetrahydrofuran mixed saturated steam, soaking into ethanol for 30 minutes, and performing vacuum drying; and finally forming a regular nano micro zone structure on the polymer film using the PDMS as the substrate, and thus realizing controllable self-assembly of the block polymer on the elastic substrate. The cheap and readily available PDMS is used as a substrate spinning block polymer to obtain the equivalently regular hole-like micro zone structure on the hard substrate.

Description

technical field [0001] The invention belongs to the field of macromolecular self-assembly, in particular to a method for realizing the controllable self-assembly of block polymers on elastic substrates. Background technique [0002] Ordered polymer membrane materials have become a hotspot in polymer science research due to their characteristic scale and structural characteristics and their response characteristics to external fields. On the one hand, the patterned polymer template can be further nano-processed to produce nano-materials such as nanoelectronics and optoelectronic devices; on the other hand, the patterned polymer itself can be used as a separation membrane, an adsorbent with a high specific surface area, a tissue Engineering supports, etc. [0003] Ordered nanostructures can be constructed using microphase separation of block polymers. However, the substrates currently used for block polymer films are hard and expensive silicon substrates. Contents of the i...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J3/28C08L83/04C08L53/00
Inventor 鲁从华邱鑫
Owner TIANJIN UNIV
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