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Lignin modified high molecular compatible additive and preparation method thereof

A technology of lignin and additives, applied in the direction of lignin derivatives, chemical instruments and methods, organic chemistry, etc., can solve the problems of poor performance of composite materials, affecting the composite effect of raw materials with different polarities, etc., to achieve sustainable development , Low manufacturing cost, and the effect of reducing dosage

Active Publication Date: 2010-02-17
FUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composite materials are developing rapidly, but the compatibility of materials directly affects the composite effect of raw materials with different polarities. When simple lignin is composited with other polymer materials, some properties of composite materials are not good.

Method used

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  • Lignin modified high molecular compatible additive and preparation method thereof
  • Lignin modified high molecular compatible additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In a 100-liter reactor, add 50L of deionized water and 1.50Kg of lignin, and after fully stirring at room temperature for half an hour, remove the air, according to the set reaction conditions (temperature 25°C, fully stir for half an hour to remove the air), Pass nitrogen for 3-10 minutes, pass 2.05Kg of chlorine gas to carry out chlorination reaction, react for 2.5 hours, the material obtained by the reaction is washed and filtered, and dried to obtain 0.75Kg of chlorinated lignin (that is, a modified polymer compatible additive) . The chlorine content of the tested product was 29.8%.

Embodiment 2

[0045] In a 100-liter reactor, add 50L of deionized water and 2.00Kg of lignin, and after fully stirring at room temperature for half an hour, remove the air, according to the set reaction conditions (temperature 25°C, fully stir for half an hour to remove the air), Pass nitrogen for 3-10min, pass into 2.05Kg of chlorine to carry out chlorination reaction, react for 2.5h, the material obtained by the reaction is washed and suction filtered, and dried to obtain 1.75Kg of chlorinated lignin (i.e. modified polymer compatible additive ). The chlorine content of the tested product was 29.8%.

Embodiment 3

[0047]In a 100-liter reactor, add 50L of deionized water and 3.00Kg of lignin, and after fully stirring at room temperature for half an hour, remove the air, according to the set reaction conditions (temperature 25°C, fully stir for half an hour to remove the air), Pass nitrogen for 3-10 minutes, pass 2.90Kg of chlorine gas to carry out chlorination reaction, react for 2.5 hours, the material obtained by the reaction is washed and filtered, and dried to obtain 2.90Kg of chlorinated lignin (that is, a modified polymer compatible additive) . The chlorine content of the tested product was 25.7%.

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Abstract

The invention provides a lignin modified high molecular compatible additive and a preparation method thereof, belonging to the technical field of high molecular compatilizer. The lignin modified highmolecular compatible additive is chloridized lignin or derivatives thereof obtained by modifying lignin by chlorine or the derivatives thereof. Compared with the lignin extracted by other methods, thesolvent-type lignin contains abundant phenolic hydroxyls in structure and maintains various active groups better as well as has higher chemical activity. Active hydrogen in the benzene ring of the solvent-type lignin provides a basis for reacting with chlorine. Using the chloridized lignin derivatives as high molecular compatilizers ensures the full use of the regenerative biological resource oflignin, thereby overcoming a deficiency that an original lignin molecular structure has no enough polar groups, is difficult to be compatible with polar polymers so as to influence the performance oflignin-polar high polymer composite material, and further reducing the cost of high polymer composite material; the lignin modified high molecular compatible additive has simple processing technique,and is easy to implement with favorable modifying effect.

Description

technical field [0001] The invention belongs to the technical field of polymer compatible additives (additives and compatibilizers for polymer materials), and more specifically relates to a lignin-modified polymer compatible additive and a preparation method thereof. Background technique [0002] With the development of polymer science, polymer materials have become indispensable and important materials for people's clothing, food, housing and transportation. But most polymers are derived from petrochemical products. Mineral and fossil raw material resources such as petroleum and coal are decreasing day by day, and the development and application of renewable resources have become the target of people's attention. Composite materials are developing rapidly, but the compatibility of materials directly affects the composite effect of raw materials with different polarities. When simple lignin is composited with other polymer materials, some properties of composite materials a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C07G1/00C08L27/06C08L55/02C08L67/04
Inventor 程贤甦陈新光
Owner FUZHOU UNIV
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