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POSS (Polyhedral Oligomeric Silsesquioxane) fluorine-silicon acrylate block copolymer as well as preparation method and application thereof

A technology of siloxane fluorosilicone acrylate and block copolymer, which is applied in the direction of coating, etc., to achieve the effect of easy-to-obtain raw materials, mild experimental conditions, and good blood compatibility

Inactive Publication Date: 2013-12-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis of fluorosilicon block copolymers with PDMS as the soft segment, fluorine-containing acrylate functional monomer and POSS copolymer as the hard segment and the research on blood compatibility have not been reported in the literature.

Method used

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  • POSS (Polyhedral Oligomeric Silsesquioxane) fluorine-silicon acrylate block copolymer as well as preparation method and application thereof
  • POSS (Polyhedral Oligomeric Silsesquioxane) fluorine-silicon acrylate block copolymer as well as preparation method and application thereof
  • POSS (Polyhedral Oligomeric Silsesquioxane) fluorine-silicon acrylate block copolymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]Take 10 g of hydrogen-terminated silicone oil (H-PDMS-H) with a number average molecular weight of 10,000, 0.12 g of allyl alcohol, and 50 μl of platinum vinyl siloxane chelate, add 10 g of isopropanol, and react at room temperature for 15 minutes. Take 10g of synthesized HO-PDMS-OH, 0.28g of ACVA, 0.12g of DPTS and add it to the mixed solvent of 50g of dichloromethane and 12g of DMF. After completely dissolving, take 0.83g of DCC and dissolve it in 10g of dichloromethane in the mixed system. After stirring and reacting at room temperature for 24 h, the mixed liquid was added dropwise into a large amount of methanol for precipitation to obtain a polydimethylsiloxane macroinitiator (PDMS-MAI).

[0026] Take 3.5g of PDMS-MAI prepared by the above process, dissolve it in 40g of benzene solvent, stir for half an hour under the protection of nitrogen until it is completely dissolved, raise the temperature of the system to 65°C, and after the temperature is stable, add 2.7g of...

Embodiment 2

[0028] Take 10 g of double-ended hydrogen silicone oil (H-PDMS-H) with a number average molecular weight of 5000 g / mol, 0.23 g of allyl alcohol, and 100 μl of platinum vinyl siloxane chelate, add 10 g of isopropanol, and react at room temperature for 30 min. Take 10g of synthesized HO-PDMS-OH, 0.56g of ACVA, 0.235g of DPTS and add it to the mixed solvent of 50g of dichloromethane and 15g of DMF. After completely dissolving, take 1.65g of DCC and dissolve it in 10g of dichloromethane in the mixed system. After stirring at room temperature for 24 h, the mixture was added dropwise into a large amount of methanol for precipitation. A polydimethylsiloxane macroinitiator (PDMS-MAI) was obtained.

[0029] Take 3g of PDMS-MAI prepared by the above process, dissolve it in 40g of benzene solvent, stir for half an hour under the protection of nitrogen until it is completely dissolved, raise the temperature of the system to 65°C, and after the temperature is stable, add 2.5g of methacryl...

Embodiment 3

[0031] Take 10 g of double-ended hydrogen silicone oil (H-PDMS-H) with a number average molecular weight of 2000 g / mol, 0.72 g of allyl alcohol, and 200 μl of platinum vinyl siloxane chelate, add 10 g of isopropanol, and react at room temperature for 60 min. Take 10g of synthesized HO-PDMS-OH, 1.15g of ACVA, 0.5g of DPTS and add it to the mixed solvent of 50g of dichloromethane and 10g of DMF. After completely dissolving, take 3.1g of DCC and dissolve it in 10g of dichloromethane in the mixed system. After stirring at room temperature for 24 h, the mixture was added dropwise into a large amount of methanol for precipitation. A polydimethylsiloxane macroinitiator (PDMS-MAI) was obtained.

[0032] Take 3g of PDMS-MAI prepared by the above process, dissolve it in 40g of benzene solvent, stir for half an hour under the protection of nitrogen until it is completely dissolved, raise the temperature of the system to 65°C, and after the temperature is stable, add 3g of methyl methacr...

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Abstract

The invention discloses a POSS (Polyhedral Oligomeric Silsesquioxane) fluorine-silicon acrylate block copolymer as well as a preparation method and application thereof. The copolymer is composed of a PDMS (Polydimethylsiloxane) block and an FAC (Fluorinated Acrylate) block and has a structural formula shown in the specification. According to the preparation method, free-radical polymerization is carried out on acrylate monomers, hydroxyl-containing acrylic functional monomers, fluorinated functional acrylic monomers and (methyl) propylene acyloxy oligomeric silsesquioxane by utilizing a polydimethyl siloxane macromolecular initiator to obtain the POSS fluorine-silicon acrylate block copolymer. The preparation method disclosed by the invention has the advantage that the raw materials are easily available and the experimental conditions are gentle; the surface of the block copolymer has a micro-phase separating structure, so that the block copolymer has the characteristics of low surface energy, strong base material adhesive force and the like after being formed into a film, has certain crudeness and hardness, and is applied to a blood compatible material.

Description

technical field [0001] The invention relates to a (meth)acryloyloxy oligomeric silsesquioxane (POSS) fluorosilicon acrylate block copolymer and its preparation and application, and belongs to the field of fluorosilicon acrylic resin synthesis and the field of biomedical materials. Background technique [0002] Material design from the perspective of bionics is a commonly used strategy in the preparation of biomedical materials. The inner wall of the blood vessel in the living body is a multiphase structure microscopically. Therefore, polymer materials with a microphase separation structure with a certain roughness may have good blood compatibility. [0003] Ye et al. observed the heart valve of rabbits and found that its surface is composed of pebble-like and fine villi structures, and prepared polydimethylsiloxane with layered micro-nano structure by soft etching method, and found that it has micro-phase separation. The surface of the artificial heart valve surface has bet...

Claims

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Application Information

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IPC IPC(8): C08F293/00C08F220/14C08F220/18C08F220/28C08F220/22C08F230/08C09D153/00A61L27/34
Inventor 赵蕴慧蔡京哲袁晓燕李晓晖李辉
Owner TIANJIN UNIV
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