Method for preparing organic silicon-modified collagen material

A collagen and silicone technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve problems such as poor water resistance, and achieve the effect of reducing environmental pollution

Inactive Publication Date: 2011-01-19
INST OF QUALITY STANDARDS & TESTING TECH FOR AGRO PROD OF SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of collagen into polymer modification is currently mainly focused on the graft co

Method used

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  • Method for preparing organic silicon-modified collagen material
  • Method for preparing organic silicon-modified collagen material
  • Method for preparing organic silicon-modified collagen material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Anionic ring-opening polymerization (molar ratio hexamethylcyclotrisiloxane: n-butyl lithium: dimethylhydrogen monochlorosilane = 4:1:2)

[0031] In the 250ml reaction flask after anhydrous and anaerobic treatment, add 0.02mol n-butyllithium, 30mL benzene solution containing 17.64g hexamethylcyclotrisiloxane and 40ml tetrahydrofuran successively with a syringe, and stir at 25°C After reacting for 8 hours, 0.04 mol of dimethylhydrogen monochlorosilane was added with a syringe to terminate the reaction. The reaction solution was filtered to remove the generated lithium chloride, and the low boilers were distilled off under reduced pressure to obtain 19.36 g of polysiloxane (Mn=1000) containing a silicon hydrogen group at one end of a colorless transparent liquid with a yield of 97%.

[0032] Hydrosilylation reaction (molar ratio polysiloxane: allyl glycidyl ether = 1:1.2)

[0033] In a 100ml four-neck flask, add compound (I) 1.41g, 10mL toluene and 40μL chloroplatinic ac...

Embodiment 2

[0039] Change the amount of hexamethylcyclotrisiloxane added in the anionic ring-opening polymerization reaction of Example 1 to 28.03 g, 0.02 mol of n-butyllithium, and 0.04 mol of dimethylhydrogen-chlorosilane to terminate the reaction, and other reaction conditions are as in the example As described in 1, 28.50 g (Mn=1500) of polysiloxane containing silicon hydrogen groups at one end was obtained, with a yield of 93.9%. The unsaturated epoxy compound in the hydrosilylation reaction changes from compound (I) to compound (II), and the molar ratio changes from 1: 1.2 to 1: 1. Other conditions are as described in Example 1 to obtain molecular weight and structure Different from the monoepoxy-terminated polysiloxane of Example 1, the yield was 92%. In the preparation process of the organosilicon-modified collagen material in Example 1, the mixed solvent used is changed from water to tetrahydrofuran to water to acetone, the pH is changed to 9.0, and the reaction time is changed t...

Embodiment 3

[0041] In the anionic ring-opening polymerization reaction of Example 1, the amount of hexamethylcyclotrisiloxane added was changed to 19.60 g, the initiator was changed to 0.01 mol of sec-butyl lithium, the accelerator was changed to dimethyl sulfoxide, and 0.02 mol of dimethyl The reaction was terminated by hydrochlorosilane, and the reaction time was changed to 5 h. Other reaction conditions were as described in Example 1, and 19.56 g (Mn=2000) of polysiloxane containing a single-terminal silicon hydrogen group was obtained, with a yield of 94%. The unsaturated epoxy compound in the hydrosilylation reaction is changed from compound (I) to compound (III), the conditions of the hydrosilylation reaction are as described in Example 1, and the molecular weight and structure are different from those of Example 1. Monoepoxy-terminated polysiloxane with a yield of 93%. During the preparation process of the silicone-modified collagen material, the reaction conditions were as describ...

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Abstract

The invention discloses a method for preparing an organic silicon-modified collagen material. The method is characterized by comprising the following steps of: 1, taking an unsaturated epoxy compound and hexamethyl cyclotrisiloxane as starting materials; and synthesizing single-epoxy terminated polysiloxane by anionic open-loop polymerization and hydrosilation reactions; 2, separating and extracting animal hides or leather industrial waste to obtain protein; and 3, reacting the two substances in a mixed solvent; and obtaining the organic silicon-modified collagen material after freeze-drying, dewatering and Soxhlet extracting. The collagen prepared by the method has the characteristics of high crosslinking degree, high amphiphilicity, and capacity of serving as various industrial raw materials.

Description

technical field [0001] The invention relates to a preparation method of a modified protein macromolecule surfactant, in particular to a method for modifying a collagen material with single epoxy-terminated polysiloxane. Background technique [0002] The main component of animal skin is collagen. At present, most animal skins are used in leather production, but only 20% to 40% of raw material skins are converted into leather in leather production, while the rest become leather industry waste. my country is a big leather-producing country, which produces more than 1 million tons of leather solid waste every year. The main component of animal hides and leather solid waste is collagen. Compared with other proteins (such as milk protein and soybean protein), it is a rigid chain structure composed of three polypeptide chains tightly combined with α-helices. Due to this The existence of unique macromolecular helical structure and aggregate structure makes it have high toughness, t...

Claims

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Application Information

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IPC IPC(8): C08H1/06C08G81/00C08G77/38B01F17/54C09K23/54
Inventor 岳晖张萌邬元娟张建国孟诚
Owner INST OF QUALITY STANDARDS & TESTING TECH FOR AGRO PROD OF SHANDONG ACADEMY OF AGRI SCI
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