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Super-hydrophobic monodisperse polymer microspheres and preparation method thereof

A microsphere and superphobic technology, which is applied in the field of superhydrophobic monodisperse polymer microspheres and their preparation, can solve the problems of inapplicability to large-scale industrial production, low monomer input, and low yield of microspheres. The effect of safe and reliable conditions, environmental friendliness and low price

Inactive Publication Date: 2017-06-13
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of preparing microspheres, the amount of monomer input is low (less than 5%), and the yield of microspheres is low (usually less than 50%), which is not suitable for large-scale industrial production; and in order to obtain superhydrophobic surface , need to add special fluorine-containing monomer, expensive

Method used

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  • Super-hydrophobic monodisperse polymer microspheres and preparation method thereof
  • Super-hydrophobic monodisperse polymer microspheres and preparation method thereof
  • Super-hydrophobic monodisperse polymer microspheres and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Add 2.42 ml of divinylbenzene monomer, 5.08 ml of dodecyl methacrylate monomer, 34.7 μl of N,N-dimethylaniline, and 66.6 mg of benzoyl peroxide into 30 ml of acetic acid. , added to the polytetrafluoroethylene lining of the stainless steel reaction kettle, passed through nitrogen for 15 min, and sealed after removing oxygen. Then place it in an oil bath, and the temperature of the oil bath is set to 25°C. The reaction time is 48 hours. After washing with ethanol, centrifugal precipitation, and drying, poly(dodecyl methacrylate-divinylbenzene) microspheres were obtained, with a particle size of 3.49 µm, a polydispersity coefficient of 1.012, and a yield of 29.6% ( figure 1 ). 60 mg of microspheres were dispersed into 1 ml of ethanol to form a microsphere dispersion, which was added dropwise to the glass surface and dried to obtain a substrate with a superhydrophobic surface.

Embodiment 2

[0035] Add 1.73 ml of divinylbenzene monomer, 3.57 ml of dodecyl methacrylate monomer, and 375.4 mg of azobisisobutyronitrile into 30 ml of acetonitrile. In the inner lining, nitrogen gas was passed through for 15 minutes, and after oxygen was removed, it was sealed. Then place it in an oil bath, and the temperature of the oil bath is set to 85°C. Reaction time 4 hours. Stop heating, wash with ethanol, centrifuge, and dry to obtain poly(dodecyl methacrylate-divinylbenzene) microspheres with a particle size of 3.157 µm, a polydispersity coefficient of 1.018, and a yield of 93.6% ( figure 2 ). 60 mg of microspheres were dispersed into 1 ml of ethanol to form a microsphere dispersion, which was added dropwise to the glass surface and dried to obtain a substrate with a superhydrophobic surface.

Embodiment 3

[0037] Add 3.44 ml of divinylbenzene monomer, 1.78 ml of dodecyl methacrylate monomer, and 376.4 mg of azobisisobutyronitrile into 30 ml of acetonitrile. In the inner lining, nitrogen gas was passed through for 15 minutes, and after oxygen was removed, it was sealed. Then place it in an oil bath, and the temperature of the oil bath is set to 85°C. Reaction time 4 hours. Stop heating, wash with ethanol, centrifuge, and dry to obtain poly(dodecyl methacrylate-divinylbenzene) microspheres, the particle size is 2.422 μm, the polydispersity coefficient is 1.025, and the yield is 94.2% ( image 3 ). 100 mg of microspheres were dispersed into 1 ml of ethanol to form a microsphere dispersion, which was added dropwise to the glass surface and dried to obtain a substrate with a superhydrophobic surface.

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Abstract

The invention relates to super-hydrophobic monodisperse polymer microspheres and a preparation method thereof. The method comprises the following steps: by adopting precipitation polymerization, adding lauryl metbacrylate, divinyl benzene and an initiator to a solvent, mixing evenly, putting the mixture into a stainless steel reaction kettle and sealing; controlling a reaction temperature to be 82-200 DEG C and the reaction time to be 1-12h; and carrying out washing and centrifugal precipitation on the obtained product by using a solvent, and drying to obtain the super-hydrophobic monodisperse polymer microspheres. The microspheres are simple in preparation process and short in elapsed time; the monomer input amount reaches 20%; the yield of the microspheres is higher than 90%; the raw materials are fluoride-free monomers; the microspheres are friendly to environment and low in price; and industrial production is easy to implement.

Description

technical field [0001] The invention relates to a superhydrophobic monodisperse polymer microsphere and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] The superhydrophobic phenomenon widely exists in nature, and researchers have obtained inspiration from it and developed a variety of superhydrophobic materials. At present, researchers generally believe that a superhydrophobic surface needs to meet two conditions at the same time: micro-nano structure and low surface energy. To this end, the methods for preparing superhydrophobic surfaces mainly include plasma treatment, photolithography, mold method, and electrospinning. These methods either require special or expensive instruments and equipment, or are time-consuming and labor-intensive, making them difficult to industrialize. [0003] Chinese patent document CN101875728B discloses a preparation method of fluorine-containing polyphosphazene microspheres, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F212/36C03C17/32
CPCC03C17/32C08F212/36C08F220/18C08F220/1812
Inventor 张书香丁园园陈喜禄陈志勇
Owner UNIV OF JINAN
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