Hyperbranched polymer template material and application thereof in preparing organic nanoparticles

A technology of hyperbranched polymers and hyperbranched polyesters, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of hyperbranched polymers that have not been reported in the literature, and achieve low cost, simple process, and dispersed good stability effect

Inactive Publication Date: 2010-05-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There is no literature report on the preparation of hyperbranched polymers for organic nanoparticles

Method used

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  • Hyperbranched polymer template material and application thereof in preparing organic nanoparticles
  • Hyperbranched polymer template material and application thereof in preparing organic nanoparticles
  • Hyperbranched polymer template material and application thereof in preparing organic nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of hyperbranched template A: 6.72 g of trimethylolpropane (TMP) was added into a three-necked flask, and dissolved with 100 ml of xylene at 100° C. After the trimethylolpropane (TMP) is completely dissolved, add 21.2g 2,2-dimethylolpropionic acid (DMPA) and 0.2g p-toluenesulfonic acid and heat up to 140°C for about 2 hours; heat up to 150°C and add React 0.1g of p-toluenesulfonic acid for 0.5h, measure the amount of water in the separator close to the theoretical amount of water generated, cool down to 140°C and add 42.4g of 2,2-dimethylolpropionic acid (DMPA), 100ml of xylene and 0.4g of p-toluene React with toluenesulfonate for about 2 hours; heat up to 150°C and add 0.2g p-toluenesulfonic acid to react for 0.5h, measure the amount of water in the water separator close to the theoretical amount of water generated; cool down to 140°C and add 84.8g 2.2-dimethylolpropionic acid (DMPA ), about 100ml of xylene and 0.8g p-toluenesulfonic acid to react for ab...

Embodiment 2

[0032] (1) Preparation of hyperbranched template B: in a four-necked flask equipped with a reflux condenser, agitator, water separator, thermometer, and nitrogen protection, 100 grams of dimethylol propionic acid and a small amount of catalyst p-toluenesulfonate Acid, 200 grams of xylene reacted under reflux for 6-7 hours, when there is no more water distilled out of the water separator, gradually increase the reaction temperature to 150-165 ° C, and further react for 1-2 hours under vacuum to remove the remaining xylene , to obtain light yellow hydroxyl-terminated hyperbranched polyester B. The acid value of the system is lower than 20mgKOH / g. For the reaction formula and structural formula of hyperbranched polyester B, please refer to image 3 .

[0033] (2) Modification of hyperbranched template B: 100 grams of terminal hydroxyl hyperbranched polyester B and 75 grams of succinic anhydride in a four-necked flask equipped with a reflux condenser, agitator, water separator, ...

Embodiment 3

[0037] (1) Preparation of hyperbranched template D: 10.5 grams of neopentyl glycol, 402 grams of dimethylol propionic acid and a small amount of catalyst p-toluenesulfonic acid are added to the four-port reactor, while adding 200 grams of xylene as reflux solvent. Then the reactor was heated in an oil bath at a predetermined temperature of 140° C. After 4 hours of reaction, the solvent and water were distilled off under reduced pressure, and the reaction product was collected to obtain light yellow hydroxyl-terminated hyperbranched polyester D. For the reaction formula and structural formula of hyperbranched polyester D, please refer to Figure 4 .

[0038] (2) Modification of the hyperbranched template D: 100 grams of the obtained hydroxyl-terminated hyperbranched polyester D were dissolved in pyridine, 59 grams of acetic anhydride was added, and stirred at room temperature for 2 hours to obtain a carboxyl-terminated hyperbranched polyester.

[0039] (3) Preparation of orga...

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Abstract

The invention relates to a hyperbranched polymer template material and application thereof in preparing organic nanoparticles. The template material is prepared by the steps of carrying out the condensation polymerization on ABx type monomers to obtain a hydroxyl-terminated hyperbranched polyester, wherein, A stands for a carboxyl functional group, B stands for a hydroxyl functional group, and X is a natural number which is not less than 2; and then modifying the hydroxyl-terminated hyperbranched polyester by ionization to obtain a water-soluble hyperbranched polyester the internal cavity of which is lipophilic and the external of which is hydrophilic, wherein the water-soluble hyperbranched polyester can dissolve oil-soluble monomers, the molecular weight of the water-soluble hyperbranched polyester is 3000-7000 (the method for testing the molecular weight is gel permeation chromatography), and the number of the active terminal groups is 16-64.

Description

technical field [0001] The invention relates to a hyperbranched polymer template material and its application in preparing organic nanoparticles. Background technique [0002] The principle of preparing nanomaterials with dendrimers and hyperbranched polymers as templates is to use the characteristics of hyperbranched polymer molecular spheres with "cavity inside and dense outside", and through space restriction, the internal cavity content of hyperbranched polymer spheres Nano-guest nanoparticles play the role of a template, so that the nanoparticles are coated inside the hyperbranched polymer and protected from aggregation, so that stable and uniformly dispersed nanoparticles can be obtained. [0003] Perignon N uses hyperbranched poly(amine-amide) as a "nanoreactor", uses NaBH 4 Reduced AuCl 4 ~ (remove ~) to obtain gold nanoparticles with good stability, the size of which is between 4nm and 9nm. Bao et al. used NaBH in the hyperbranched polyurethane system 4 The gold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/06C08F120/14C08F120/18C08F2/24B82B3/00
Inventor 张宝华潜飞陈斌吴雷敏张建辉
Owner SHANGHAI UNIV
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