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Method for preparing solation-gelation hybridized nano self-assembly aggregation

A nanometer self-assembly and gelation technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of low concentration, difficulty in mass production, and long time consumption.

Active Publication Date: 2015-05-13
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the traditional method of adding a selective solvent to the solution of the block copolymer to achieve self-assembly to prepare nano-self-assembled aggregates is limited by its low concentration and time-consuming, it is difficult to mass-produce

Method used

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  • Method for preparing solation-gelation hybridized nano self-assembly aggregation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1. Synthesis of macromolecular chain transfer agent: MPS (2.5mL, 2mmol), CDB (54.5mg, 0.2mmol) and AIBN (6.6mg, 0.04mmol)) were dissolved in toluene (1ml), degassed by freezing and thawing for 3 After the second time, under the protection of argon, the polymerization was carried out at 65°C for 5 hours, and the conversion rate was 74%. The pink viscous liquid PMPS, M n (SEC, vs PS)=9400, PDI=1.12,

[0012] 2. Synthesis of nano-self-assembled aggregates: Dissolve PMPS macromolecular chain transfer agent (75mg) in a mixed solvent of St (1ml, 8.4mmol) and n-butanol (1.5ml), freeze-thaw, degas and freeze-thaw After degassing for 3 times, it was polymerized at 110°C for 24 hours under argon protection and stirring, and the conversion rate was 37% as measured by NMR, and vesicles were obtained.

Embodiment 2

[0014] In step 2, the dosage of PMPS is 150mg, the reaction time is 24h, and the rest is the same as in Example 1. The conversion rate is 36%, and the nanowire structure is obtained.

Embodiment 3

[0016] In step 2, the amount of PMPS was 200mg, the reaction time was 24h, and the rest were the same as in Example 1. The conversion rate was 34%, and nano-spherical micelles were obtained.

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Abstract

The invention provides a method for preparing solation-gelation hybridized nano self-assembly aggregation. A polymethylacrylic acid gamma-trimethoxy silane ester macromolecular chain transfer agent regulates and controls reversible addition-fragmentation chain transfer polymerization of styrene in a selective solvent, so that the solation-gelation self-assembly aggregation with different shapes is prepared in an in-situ self-assembly manner. The self-assembly aggregation can stabilize a micellar structure or introduce functional hybridized components through further solation-gelation.

Description

technical field [0001] The invention relates to a sol-gelling hybrid nanometer self-assembled aggregate and a preparation method thereof. Background technique [0002] Macromolecular self-assembly belongs to the interdisciplinary research field of supramolecular chemistry and polymer chemistry. Among them, the solution self-assembly of block copolymers is the mainstream in the field of macromolecular self-assembly. Solution self-assembly of block copolymers is a complex process involving many factors. A series of morphologies such as spheres, rods, vesicles, and large complex micelles are formed in solution. It has attracted much attention from academia and industry and is regarded as It is one of the main ways to construct functional nanomaterials with regular structure, and has potential application value in the fields of drug controlled release, separation, microelectronics, optics, catalysis, etc. At present, there are many studies on the solution self-assembly of pure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F112/08C08F2/38C08F130/08B01J13/14
Inventor 戴李宗邓远明高辉罗建龙程玲许一婷罗伟昂曾碧榕
Owner XIAMEN UNIV