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Preparation of spiral polymer emulsion

A polymer emulsion and polymer technology, applied in the field of polymer materials, can solve the problems of poor solubility and processability of spiral polymers

Inactive Publication Date: 2009-07-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the application prospects of helical polymers, the object of the present invention is to synthesize helical polymers by emulsion polymerization, which not only avoids the problems of poor solubility and processability of helical polymers synthesized by solution polymerization, but also avoids environmental pollution. Therefore, the application of helical polymers is greatly improved

Method used

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  • Preparation of spiral polymer emulsion
  • Preparation of spiral polymer emulsion
  • Preparation of spiral polymer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 0.735g of surfactant SDS in 15ml of deionized water to form a surfactant solution, control the temperature at 0°C, stir until dissolved at a stirring speed of 300r / min, and then dissolve the monomer 0.13g was dissolved in 2ml of DMF, the molar ratio of monomer to surfactant was 1:3, the DMF containing monomer was added dropwise in the surfactant solution, stirred for 20 minutes under nitrogen protection to form a mixed solution, and 0.0087 The g metal Rh catalyst was dissolved in 1ml of DMF, and the DMF containing the catalyst was added dropwise to the above mixed solution, and stirred for 0.5 hours under nitrogen protection to obtain an orange-yellow spiral polymer emulsion.

Embodiment 2

[0041] Dissolve 1.65 g of the surfactant Triton X-100 in 15 ml of deionized water to form a surfactant solution, the co-emulsifier is THF, and the operation process is the same as in Example 1.

Embodiment 3

[0043] Dissolve 2.94g of surfactant SDS in 15ml of deionized water to form a surfactant solution, control the temperature at 30°C, stir until dissolved at a stirring speed of 500r / min, and then dissolve the monomer 0.26g was dissolved in 2ml of DMF, the molar ratio of monomer to surfactant was 1:6, the DMF containing monomer was added dropwise in the surfactant solution, stirred for 20 minutes under nitrogen protection to form a mixed solution, and 0.0087 The g metal Rh catalyst was dissolved in 1ml of DMF, and the DMF containing the catalyst was added dropwise to the above mixed solution, and stirred for 2 hours under nitrogen protection to obtain an orange-yellow spiral polymer emulsion.

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Abstract

The invention relates to a spiropolymer emulsion, which belongs to the field of high molecular materials. A preparation method for the spiropolymer emulsion comprises the following steps: firstly dissolving a surfactant in the deionized water to form a surfactant solution, controlling the temperature to be between 0 and 5 DEG C, and carrying out the stirring at the stirring speed of 300 r / min to 700r / min; and intensively dissolving proparagyl monomers shown by the right formula(I), wherein R represents alkyl, and a hetero ring or aryl or phenylacetylene monomers shown by the right formula(II) in an emulsification promoter, dropping the emulsification promoter into the surfactant solution, stirring the solution for 20 minutes under the protection of nitrogen so as to form a mixed solution, intensively dissolving a metal rhodium catalyst in the emulsification promoter, then dropping the emulsification promoter containing the metal rhodium catalyst into the mixed solution, carrying out the stirring reaction for 0.5 to 5 hours so as to obtain the orange yellow spiropolymer emulsion.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to a preparation method of a spiral polymer emulsion. Background technique [0002] The helix is ​​a chiral structure, that is, the left-handed helix and the right-handed helix are mirror images that cannot overlap. Biomacromolecules in nature, such as DNA, protein, ribose, etc., all have a helical structure, and their biological activity comes from their precise and ordered chemical structure. Helical macromolecules are uniquely attractive to scientists in the field of polymer synthesis. Helical macromolecules have many special potential applications, such as: molecular recognition, chiral separation, chiral catalysis, data storage, display materials, etc. [0003] The history of helical macromolecules can be traced back to the discovery of the helical conformation of natural macromolecules. In 1937 Hanes proposed the helical structure of polysaccharides. In the early 1950s, Pauli...

Claims

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Application Information

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IPC IPC(8): C08F138/00C08F2/24
Inventor 邓建平杨万泰罗晓锋陈博
Owner BEIJING UNIV OF CHEM TECH
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