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Synthesis method of active bromine-containing bagasse xylan ester-g-AM

A technology of xylan and polysaccharide ester, which is applied in the field of synthesis of active bromine-containing bagasse xylan ester-g-AM, can solve the problems of low activity, limited functional application, water solubility to be improved, etc., and achieve the improvement of biological activity , Solubility improvement, thermal stability improvement effect

Inactive Publication Date: 2021-01-19
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydroxyl groups on the C2 and C3 positions of bagasse xylan are easy to form a strong hydrogen bond network, which makes it less active and limits its functional application. Therefore, it is important to enhance the activity of bagasse xylan by chemical modification. value
In addition, the water solubility of bagasse xylan derivatives modified by esterification and grafting still needs to be improved.

Method used

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  • Synthesis method of active bromine-containing bagasse xylan ester-g-AM
  • Synthesis method of active bromine-containing bagasse xylan ester-g-AM
  • Synthesis method of active bromine-containing bagasse xylan ester-g-AM

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Experimental program
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Effect test

Embodiment

[0042] (1) 15 g of bagasse xylan was dried in a constant-temperature vacuum oven at 60° C. for 24 hours to obtain dry-based bagasse xylan.

[0043] (2) Weigh 1.2g of ammonium persulfate and 0.80g of sodium bisulfite into a 50mL beaker, add 30mL of distilled water, stir and dissolve to form a redox system initiator solution, pour it into a 100mL constant pressure dropping funnel, and set aside.

[0044] (3) Weigh 5.0g of acrylamide into a 100mL beaker, add 30mL of distilled water, stir and dissolve evenly to obtain a monomer solution, pour it into another 100mL constant pressure dropping funnel, and set aside.

[0045] (4) Weigh 10.0 g of dry-based bagasse xylan obtained in step (1), place it in a 250 mL four-neck flask, add 90 mL of distilled water, raise the temperature to 50°C, and stir for 25 minutes to obtain a bagasse xylan activation solution.

[0046] (5) Synchronously dropwise add the initiator solution obtained in step (2) and the monomer solution obtained in step (3)...

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Abstract

The invention discloses a synthesis method of active bromine-containing bagasse xylan ester-g-AM. The method comprises the following steps: taking bagasse xylan as a main raw material, taking ammoniumpersulfate / sodium hydrogen sulfite as a redox system initiator and taking acrylamide as a grafting monomer; synthesizing a bagasse xylan grafted acrylamide copolymer, namely bagasse xylan-g-AM, in awater solvent through a free radical reaction; furthermore, taking 3-bromopyruvic acid as an esterifying agent, taking 4-dimethylaminopyridine and tetrabutyl titanate as a composite catalyst, and synthesizing a final product active bromine-containing derivative bagasse xylan bromopyruvate-g-AM through catalytic esterification. The solubility of the obtained product in water is improved by 10%, thethermal stability is improved, the biological activity is also improved, and the application of bagasse xylan in the fields of medicines, polymer functional materials and the like is broadened.

Description

technical field [0001] The invention relates to the field of biomass functional materials, in particular to a synthesis method of active bromine-containing bagasse xylan ester-g-AM. Background technique [0002] The strong drug resistance of tumor cells has always been a difficult problem in the field of clinical medicine, so finding anticancer drugs with high efficiency and low toxicity is an important direction of current cancer research. Due to its unique structure, xylan has a variety of biological functions, such as basic non-toxicity, good biodegradability, good biocompatibility, regeneration, low oxygen osmotic pressure and other functions, especially its certain Inhibit the proliferation ability of cancer cells. However, the hydroxyl groups on the C2 and C3 positions of bagasse xylan are easy to form a strong hydrogen bond network, which makes it less active and limits its functional application. Therefore, it is important to enhance the activity of bagasse xylan by...

Claims

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Application Information

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IPC IPC(8): C08F8/14C08F251/00C08F220/56
CPCC08F8/14C08F251/00
Inventor 李和平刘红丽谢超煜张淑芬李明坤葛文旭杨锦武杨莹莹郑光绿
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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