A method for preparing submicron-scale single-layer polystyrene colloidal crystals
A polystyrene and polystyrene microsphere technology, applied in the direction of single crystal growth, crystal growth, single crystal growth, etc., can solve the problem of inability to achieve single-layer PS colloidal crystal assembly, poor single-layer PS colloidal crystal quality, Assembly cycle (long time and other problems, to achieve the effect of high assembly efficiency, low equipment requirements, and simple equipment
Inactive Publication Date: 2016-08-17
HENAN POLYTECHNIC UNIV
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The method is to assemble PS colloidal crystals on the surface of PS colloidal microsphere suspension with water as the dispersion medium. There is a technical scheme close to the present invention, but the PS colloidal crystals assembled by this method are all three-dimensional assemblies (i.e. multi-layer assembly) body), unable to achieve the assembly of single-layer PS colloidal crystals
[0012] Therefore, most of the existing assembly methods can only assemble three-dimensional PS colloidal crystals, and cannot realize the assembly of single-layer PS colloidal crystals.
Even though the suspension method and the dip coating method can realize the single-layer assembly of single-layer PS microspheres, the requirements for the equipment used for assembly are relatively high, and the assembly cycle (time) is long, and the quality of the assembled single-layer PS colloidal crystals is low. Difference
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[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] There are many methods for assembling polystyrene colloidal crystals, such as: gravity deposition method, vertical deposition method, rapid assembly method at room temperature, aqueous medium gas-liquid interface assembly method, centrifugal deposition method, spin coating method, dip coating method, etc. Except for the latter two methods, when preparing polystyrene colloidal crystals, the above-mentioned methods all have the problems of long assembly cycle, poor assembly quality, high equipment requirements, and in particular, the inability to realize single-layer assembly. Although spin-coating and dip-coating methods can obtain single-layer polystyrene colloidal crystals, there are still problems such as high equipment requirements, difficult manipulation, and poor assembly quality. In comparison, the method provided by the ...
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Abstract
The invention discloses a new method for preparing submicron-scale single-layer polystyrene colloidal crystals. First, ethanol, water and submicron-scale polystyrene microspheres are sequentially added into a beaker to form submicron-scale polystyrene microspheres. suspension; then place the beaker in an ultrasonic cleaner to disperse the submicron-sized polystyrene microspheres in the suspension evenly; finally place the beaker in a constant temperature drying oven for drying and heating, and the gas-liquid of the suspension in the beaker A submicron-scale single-layer polystyrene colloidal crystal is formed at the interface. The present invention can accurately control the assembly of single-layer polystyrene colloidal crystals by adjusting the ratio of alcohol and water, and can realize rapid assembly of large-area single-layer polystyrene colloidal crystals, which is simple, fast and efficient, and has low requirements for equipment. The laboratory equipment can be assembled.
Description
technical field [0001] The invention relates to a new method for preparing submicron-scale polystyrene colloidal crystals, in particular to a method for preparing submicron-scale single-layer polystyrene colloidal crystals. Background technique [0002] 1. Explanation of related terms: [0003] Colloidal crystal: an ordered assembly prepared (or self-assembled) from colloidal microspheres of a certain size using a certain method. [0004] Monolayer Colloidal Crystal: A colloidal crystal assembled from only one layer of colloidal microspheres. [0005] Polystyrene colloidal microspheres: Spherical particles polymerized with styrene as a monomer by a certain polymerization method. The relative standard deviation of the particle size of colloidal microspheres used for colloidal crystal assembly should be <5%. [0006] Submicron scale: refers to the scale range of 100-1000nm. [0007] Alcohol-water ratio: the mass ratio of ethanol to water, expressed in K. [0008] 2. Bac...
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IPC IPC(8): C30B29/58
Inventor 王晓冬仪桂云李彦伟孙正林仪云云王燕曹建亮孙广孟哈日巴拉张战营
Owner HENAN POLYTECHNIC UNIV