Giant surfactant and preparation method thereof

A surfactant and giant technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., to achieve the effect of simple operation and high reaction efficiency

Active Publication Date: 2020-09-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, studies have found that the tail chain topology of giant surfactants has a decisive impact on its self-assembly behavior, but how to synthesize tail chains with rich topological structures is still insufficiently explored

Method used

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  • Giant surfactant and preparation method thereof
  • Giant surfactant and preparation method thereof
  • Giant surfactant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0089] attached figure 2 It is a schematic diagram of the reaction process for the preparation of giant surfactants in Example 1. see figure 2 , this example prepares the method for giant surfactant, comprises the following steps:

[0090] Step 1: The raw material is linear poly(styrene-r-benzocyclobutene) (P(S-r-bcbS)-OH) with hydroxyl groups, the relative molecular mass is M=2600g / mol, m:n=9:1 . Add 250mL of dibenzyl ether into a 500mL three-neck round bottom flask, heat to 250°C while stirring, and fully dissolve 200mg (0.077mmol) of P(S-r-bcbS)-OH with 40mL of dibenzyl ether, and use a syringe pump to The solution was added dropwise into the heated dibenzyl ether at a speed of 150 μL / min. The whole process was vigorously stirred to ensure that the liquid was fully mixed. After the dropwise addition, the reactants were heated at 250° C. for 2 h. After the reaction was completed, all the dibenzyl ether solvent was removed by distillation under reduced pressure. The p...

Embodiment 2

[0097] This example prepares the method for giant surfactant, comprises the following steps:

[0098] Step 1: The raw material is linear poly(styrene-r-benzocyclobutene) (P(S-r-bcbS)-OH) with hydroxyl groups, the relative molecular mass is M=4800g / mol, m:n=2.3:1 . Add 250mL of dibenzyl ether into a 500mL three-necked round-bottomed flask, heat to 250°C while stirring, and fully dissolve 250mg (0.052mmol) of P(S-r-bcbS)-OH with 40mL of dibenzyl ether, and use a syringe pump Add the solution dropwise to the heated dibenzyl ether at a rate of 200 μL / min, and stir vigorously during the whole process to ensure that the liquid is fully mixed. After the dropwise addition, continue to heat the reactant at 250° C. for 2 h. After the reaction was completed, dibenzyl ether solvent was removed by distillation under reduced pressure, the product was dissolved in 1.5 mL of dichloromethane, dropped into 40 mL of methanol for precipitation, the liquid was removed by suction filtration, and t...

Embodiment 3

[0104] This example prepares the method for giant surfactant, comprises the following steps:

[0105]Step 1: The raw material is linear poly(styrene-r-benzocyclobutene) (P(S-r-bcbS)-OH) with hydroxyl groups, the relative molecular mass is M=6400g / mol, m:n=9:1 . Add 250mL of dibenzyl ether into a 500mL three-neck round-bottomed flask, heat to 250°C while stirring, and fully dissolve 250mg of P(S-r-bcbS)-OH with 40mL of dibenzyl ether, and use a syringe pump at 220μL / min The solution was added dropwise to the heated dibenzyl ether at a high speed, and the whole process was vigorously stirred to ensure that the liquid was fully mixed. After the dropwise addition, the reactant was continued to be heated at 250°C for 2 hours. After the reaction was completed, dibenzyl ether solvent was removed by distillation under reduced pressure, the product was dissolved in 1.5 mL of dichloromethane, dropped into 40 mL of methanol for precipitation, the liquid was filtered out by suction, and ...

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Abstract

The invention discloses a giant surfactant and a preparation method thereof. The preparation method of the giant surfactant with single-chain nanoparticles as the tail chain comprises the following steps: (1) performing a cycloaddition reaction on hydroxyl-containing linear poly (styrene-r-benzocyclobutene) to initiate intramolecular crosslinking to obtain hydroxyl-containing single-chain nanoparticles; (2) carrying out nucleophilic substitution reaction on the hydroxyl-containing single-chain nanoparticles, and carrying out azide reaction to obtain azide group-containing single-chain nanoparticles; (3) carrying out an azide-alkyne click chemical reaction on the azide group-containing single-chain nano particles and mono-alkynyl heptavinyl polyhedral oligomeric silsesquioxane to obtain polyhedral oligomeric silsesquioxane containing the single-chain nano particles; and (4) performing a sulfydryl-double bond click chemical reaction on the polyhedral oligomeric silsesquioxane containingthe single-chain nanoparticles. The giant surfactant has a novel tail topological structure, and the preparation method has the characteristics of simple operation, efficient reaction and capability of realizing large-scale preparation.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a giant surfactant whose tail chain is a single-chain nanoparticle and a preparation method thereof. Background technique [0002] Megasurfactants are amphiphilic molecules composed of functionalized "nanoatomic" head groups and polymer tails linked by covalent bonds. "Nanoatoms" are a class of caged cluster molecules with precise chemical structures, nanometer dimensions, and rigid three-dimensional frameworks. Typical nanoparticles include polyhedral oligomeric silsesquioxanes (POSS), fullerenes (such as C 60 ) and derivatives of metal heteropolyacids (POM), etc. Macrosurfactants have a molecular shape similar to that of small molecule surfactants, but scaled up to the polymer level. Since this concept was proposed, giant surfactants exhibit abundant self-assembly behavior in both bulk and solution, which has attracted the attention of the academic community and ha...

Claims

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Application Information

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IPC IPC(8): C08G77/442B01F17/54C09K23/54
CPCC08G77/442C09K23/00
Inventor 张昕玥董学会甘展慧周冬冬
Owner SOUTH CHINA UNIV OF TECH
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