Super-crosslinked porous polymer material capable of being dissolved and processed and preparation method of super-crosslinked porous polymer material

Abstract

The invention relates to a super-crosslinked porous polymer material capable of being dissolved and processed and a preparation method thereof. The unit structural formula of the material is shown in the specification. In the preparation process, a halogenated aromatic compound is used as a raw material, the super-crosslinked porous polymer is obtained through Friedel-Crafts alkylation, unreacted halomethyl groups remain in the finally obtained material, and the groups can be continuously subjected to Friedel-Crafts alkylation reaction to graft polymer chains; the grafted polymer can be dissolved in solvents such as N-methyl pyrrolidone, N, N-dimethylformamide or dimethyl sulfoxide, so that the novel material has the property of dissolvable processing; according to the invention, the dispersibility of the material in a polymer matrix and the compatibility of two-phase interfaces are enhanced, so that the interface defects are reduced, and the material has good application and development prospects in the aspect of gas separation membranes.

Description

technical field [0001] The invention relates to the technical field of functional materials, to a porous polymer material with a large specific surface area and a preparation method thereof, in particular to a class of dissolvable and processable hypercrosslinked porous polymer material and a preparation method thereof. Background technique [0002] Organic porous polymer materials (MOPs) are a kind of polymer porous materials with high specific surface area and rich pore structure, which are constructed with organic compounds as the basic building blocks. Organic porous polymer materials are widely used as catalyst supports, separation membranes, gas storage materials, ion adsorbents, The fields of drug release and optoelectronics have received extensive attention from many researchers. Organic porous polymer materials are generally divided into the following categories according to their different synthesis methods: hypercrosslinked polymers (HCPs), self-polymerizing micr...

AI Technical Summary

Problems solved by technology

However, it remains a great challenge to prepare hypercrosslinked microporous polymer materials that can be dissolved and processed with enhanced processability through streamlined techniques.

[0003] At present, the problems of traditional hypercrosslinked porous polymer materials are mainly reflected in the poor monodispersity of the material and the large size of the material, which makes it difficult to apply in specific fields.

Tan Bien et al. prepared nanomaterials with a diameter of 131-360 nm by adjusting the content of emulsifiers through classic cross-linking. However, the main components of this nanomaterial are chlorinated styrene and divinylbenzene, which do not contain Functional groups that can be modified, limited application fields

Wu Dingcai and others prepared PMMA@PS nanomaterials. Although this nanomaterial can contain polyester that can be modified, it is contained by polystyrene and cannot be further applied in a wider field, and the prepared material is dispersed. Poor, can be connected into a network

Qiao Zhenan and others disclosed a PEO@PS material, and studied the influence of solvents in the preparation process of this material. This material also puts hydrophilic groups in the inner layer, and the surface cannot be further modified, and the cost of raw materials used Too high, the source is too narrow, not conducive to further application

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