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Organic and inorganic hybrid block copolymer containing POSS (polyhedral oligomeric silsesquioxane) and zwitter-ion structure and synthesis method of organic and inorganic hybrid block copolymer

A technology of block copolymer and zwitterion, applied in the field of organic-inorganic hybrid block copolymer and its synthesis, which can solve the problems of complicated experimental process and the like

Active Publication Date: 2015-05-06
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation process involves SiO 2 Preparation of Inorganic Nanoparticles, Initiator Modification of Nanoparticles, and Preparation of SiO by Atom Transfer Radical Method 2 -b-P(SBMA-co-DMAEMA) and other steps, the experimental process is more complicated

Method used

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  • Organic and inorganic hybrid block copolymer containing POSS (polyhedral oligomeric silsesquioxane) and zwitter-ion structure and synthesis method of organic and inorganic hybrid block copolymer
  • Organic and inorganic hybrid block copolymer containing POSS (polyhedral oligomeric silsesquioxane) and zwitter-ion structure and synthesis method of organic and inorganic hybrid block copolymer
  • Organic and inorganic hybrid block copolymer containing POSS (polyhedral oligomeric silsesquioxane) and zwitter-ion structure and synthesis method of organic and inorganic hybrid block copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1g APOSS, 0.03g CDB and 0.004g AIBN were dissolved in 2mL of toluene. After continuous freeze-thaw degassing for 3-5 times, they were polymerized at 80°C under the protection of argon. After a fixed reaction time, they were quenched with liquid nitrogen to stop the reaction. Ethanol was selected as the precipitating agent and the precipitation was repeated three times, followed by vacuum drying to obtain a homopolymer pink solid. Weigh 0.5 g of the macromolecular chain transfer agent obtained in step (1), measure 2 mL of the second monomer DMAEMA, and 0.15 mL of the third monomer St and dissolve in 1 mL of tetrahydrofuran. After continuous freezing and thawing and degassing for 3 to 5 times, polymerize at 65°C under the protection of argon. After a fixed period of time, the reaction was quenched with liquid nitrogen to stop the reaction. The reaction solution was dialyzed in deionized water for 48 hours, and dried in vacuum to obtain an orange-red block copolymer powder....

Embodiment 2

[0040] 1g MAPOSS, 0.03g CDB and 0.004g AIBN were dissolved in 2mL of toluene. After continuous freeze-thaw degassing for 3 to 5 times, they were polymerized at 80°C under the protection of argon. After a fixed period of time, the reaction was quenched with liquid nitrogen to stop the reaction. Ethanol was selected as the precipitating agent and the precipitation was repeated three times, followed by vacuum drying to obtain a homopolymer pink solid. Weigh 0.5 g of the macromolecular chain transfer agent obtained in step (1), measure 2 mL of the second monomer DMAEMA, and 0.15 mL of the third monomer St and dissolve in 1 mL of tetrahydrofuran. After continuous freezing and thawing and degassing for 3 to 5 times, polymerize at 65°C under the protection of argon. After a fixed period of time, the reaction was quenched with liquid nitrogen to stop the reaction. The reaction solution was dialyzed in deionized water for 48 hours, and dried in vacuum to obtain an orange-red block copol...

Embodiment 3～5

[0041] Examples 3-5: The same process conditions as in Example 1, changing the amount of DMAEMA and 1,3 propane sultone, and synthesizing copolymers with different block lengths. The results are shown in Table 1.

[0042] Table 1

[0043]

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PUM

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Abstract

The invention discloses an organic and inorganic hybrid block copolymer containing POSS (polyhedral oligomeric silsesquioxane) and a zwitter-ion structure and a synthesis method of the organic and inorganic hybrid block copolymer, and relates to block copolymers. The organic and inorganic hybrid block copolymer containing POSS and the zwitter-ion structure is denoted as POSS-b-P(St-co-DMAPS). The synthesis method comprises the following steps: dissolving a first monomer, a chain transfer agent and an initiator into a solvent, polymerizing after continuously freeze-thawing and degassing, rapidly quenching liquid nitrogen after reacting for a fixed time, stopping the reaction, precipitating, and drying to obtain a large molecular chain transfer agent; dissolving the obtained large chain transfer agent, a second monomer and a third monomer into a solvent, polymerizing after continuously freeze-thawing and degassing, rapidly quenching liquid nitrogen after reacting for a fixed time, dialyzing a reaction solution and performing vacuum drying to obtain block copolymer; adding the obtained block copolymer into tetrahydrofuran, introducing a nitrogen gas and adding a tetrahydrofuran solution which is dissolved with 1,3 propane sultone, introducing nitrogen and reacting to obtain a product.

Description

technical field [0001] The invention relates to a block copolymer, in particular to an organic-inorganic hybrid block copolymer containing POSS and a zwitterionic structure and a synthesis method thereof. Background technique [0002] Amphiphilic copolymers are a class of polymers that can undergo microphase separation in selective solvents to form self-assembled structures. As an important part of supramolecular chemistry, the research on amphiphilic copolymers has received more and more attention in recent years. In the field of supramolecular chemistry with macromolecules as assembly units, block copolymers are the most intensively studied. In view of its special amphiphilicity, it has many potential applications in stabilizers, emulsifiers, catalysts and drug carriers. [0003] Cage-shaped polyhedral oligomeric oligosesquioxane (POSS) is a new type of organic-inorganic hybrid material that has emerged in recent years. Its cage-shaped skeleton has good dimensional stabi...

Claims

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Application Information

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IPC IPC(8): C08F293/00C08F212/08C08F220/34C08F8/36
Inventor 许一婷曹莹李奇陈显明曾碧榕戴李宗
Owner XIAMEN UNIV