Preparation of biomimetic material

A biomimetic material, polysuccinimide technology, applied in the field of fine chemicals in chemical engineering, can solve the problems of poor mechanical strength and high expansion, and achieve improved mechanical strength, good environmental compatibility, and easy chemical modification Effect

Inactive Publication Date: 2009-01-28
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these copolymer materials purely composed of polyaspartic acid or its derivatives and chitosan have the disadvantages of relatively high swelling in water and poor mechanical strength.

Method used

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  • Preparation of biomimetic material
  • Preparation of biomimetic material

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Embodiment 1: In the process of preparing polyaspartic acid or its derivatives, chitosan, lecithin and calcium phosphorus compound composite material, use organic solvent method to prepare polyaspartic acid containing at least one amino side chain and Its derivative, the method comprises the following steps:

[0058] (1) Preparation of polyaspartic acid and derivatives thereof having at least one amine side chain. The method is to react polysuccinimide with polyamine or its hydrochloride in an organic solvent (such as dimethylformamide). Molar ratio of polyamine to polysuccinimide (according to succinimide unit): 0.05-1.0:1, reaction temperature 20-100°C, reaction time 1-10 hours. After the reaction is complete, add anhydrous methanol or anhydrous ethanol to precipitate the product, filter, and vacuum-dry the filter cake at 40-60°C for 4 hours to obtain a partially ring-opened polysuccinimide containing at least one amine side chain.

[0059] The raw material polysucc...

Embodiment 2

[0068] Example 2: In the process of preparing polyaspartic acid or its derivatives, chitosan, lecithin and calcium phosphorus compound composite materials, an aqueous medium method is used to prepare polyaspartic acid containing at least one amino side chain and derivatives thereof, the method comprises the following steps:

[0069] (1) Prepare an aqueous solution of polyaspartic acid and its derivatives containing at least one amino side chain. The method is to dissolve the polyamine containing at least two amine groups in the aqueous solution containing alkali, the molar ratio of polyamine to alkali is: 1:9-9:1; Molar ratio of amines (according to succinimide units): 0.05-1.0:1 mixing, reaction temperature 20-100°C, reaction time 0.1-10 hours.

[0070] The mixing mode of above-mentioned polyamine and polysuccinimide can be under agitation, polyamine solution is all, or in batches, or is added step by step in polysuccinimide suspension slurry in water and goes, or Add polys...

Embodiment 3

[0080] Example 3: In the process of preparing polyaspartic acid or its derivatives, chitosan, lecithin and calcium phosphorus compound composite materials, an aqueous medium method is used to prepare polyaspartic acid containing at least one amino side chain and derivatives thereof, the method comprises the following steps:

[0081] (1) Prepare an aqueous solution of polyaspartic acid and its derivatives containing at least one amino side chain. The method is to mix an aqueous solution of polyamine containing at least two amine groups, a hydrolysis agent and / or an aminolysis agent with polysuccinimide, the reaction temperature is 20-100° C., and the reaction time is 0.5-10 hours to obtain at least Polyaspartic acid with an amine side chain and its derivatives or an aqueous solution thereof. The molar ratio of the total moles of polyamine, hydrolysis agent and aminolysis agent to polysuccinimide calculated as succinimide units is: 1-5:1. The polyamine used may be one or a mix...

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Abstract

The invention discloses a preparation method of a biomimetic material, in particular relates to a method for preparing the composition material of poly-aspartic acid or the derivatives, chitosan, lecithin and calcium-phosphate compound. The method first compounds poly-aspartic acid or the derivatives with different side chains, and then makes the poly-aspartic acid or the derivatives with different side chains, chitosan, lecithin, calciferous solution and crosslinking agent mix, react and settle down under a certain temperature and pH value. The obtained product has the properties of biomimetic membrane materials and is an environment-friendly biomimetic material. The material has the function of absorbing heavy metals and some organics, can be used for removing heavy metals, chlorinated hydrocarbon, organic pigment and dye, and can be widely applied to pharmaceutical industry, food industry, printing and dyeing industry, waste water treatment and other fields.

Description

【Technical field】 [0001] The invention relates to the field of fine chemicals in chemical engineering, and relates to a method for preparing bionic materials, in particular to a method for preparing composite materials of polyaspartic acid or its derivatives, chitosan, lecithin and calcium-phosphorus compounds. 【Background technique】 [0002] In previous work, we have developed polyaspartic acid or its derivatives and chitosan copolymer materials (see ZL200510015063.5 and ZL200610015364.2. But these are purely composed of polyaspartic acid or its derivatives and chitosan Chitosan copolymers have the disadvantages of relatively high swelling in water and poor mechanical strength. 【Content of invention】 [0003] The purpose of the present invention is to provide a kind of preparation method of biomimetic material in order to meet the needs of application, promptly prepare the method for the composite material of polyaspartic acid or derivative thereof, chitosan, lecithin and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L5/08C08K5/07C08K3/32C08K5/521C08J3/24B01J20/22B01J20/30
Inventor 孙波王博威方叶明安钢
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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