Preparation method of asymmetric particles based on swelling seed emulsion polymerization

An asymmetric particle and emulsion polymerization technology, which is applied in the field of synthesis of non-spherical asymmetric composite particles, can solve the problem of single shape of composite particles
CN103539883AInactive Publication Date: 2014-01-29TIANJIN QUANDA TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN QUANDA TECH
Publication Date
2014-01-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of asymmetric particles based on swelling seed emulsion polymerization. The method comprises: firstly, preparing a series of seeds with different degrees of crosslinking, and then, respectively swelling the seeds through a second monomer for polymerization. Since phase separation degrees controlled by different degrees of crosslinking are different, the feeding dosage of the second monomer is isomorphically adjusted and the reaction time is controlled to prepare asymmetric composite particles. The forms of the composite particles prepared by the method are controllable, the composite particles are easy to separate and treat, and meanwhile, the composite particles have the properties of two polymers, are capable of being used as bulking agent between incompatible polymer blends, and the like. The synthesis process is simple, convenient and feasible, and the system contains no emulsifier, thereby being clean and easy to realize large scale production, and having environmental-friendly effect.
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Description

technical field

[0001] The invention belongs to the synthesis of non-spherical asymmetric composite particles, in particular to a preparation method of asymmetric particles based on swelling seed emulsion polymerization. technical background

[0002] Anisotropic composite particles generally refer to particles with asymmetric shape, chemical composition and / or performance, and non-uniform distribution, also known as Janus particles or asymmetric particles. Such particles have shown attractive application prospects in molecular recognition and self-assembly, photobiosensors, interface modification, electronic paper, anisotropic imaging probes, solar energy conversion, surfactants, etc. people's attention. The main preparation methods of anisotropic composite particles commonly reported in the literature include: microfluidic synthesis, topological selective surface modification, template self-assembly, controllable surface nucleation, swelling seed swelling polymerization, e...

Claims

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