Synthesis method of active bagasse xylan vanillate-g-HEMA/MAA/EA

A technology of vanillic acid ester and synthesis method, which is applied in the field of polymer materials, can solve problems such as low utilization value and performance defects, and achieve the effect of improving anti-oxidation and high application value

Inactive Publication Date: 2019-09-03
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

Xylan has unique biological activity and physiological functions, but natural xylan itself has performance defects, and its utilization value is not very high, and it is the most direct and effective method to improve the utilization value of xylan in plant waste It is to chem

Method used

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  • Synthesis method of active bagasse xylan vanillate-g-HEMA/MAA/EA
  • Synthesis method of active bagasse xylan vanillate-g-HEMA/MAA/EA
  • Synthesis method of active bagasse xylan vanillate-g-HEMA/MAA/EA

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Experimental program
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Effect test

Embodiment

[0034] (1) Put 2.0 g of bagasse xylan in a constant-temperature vacuum oven at 60° C. and dry for 24 hours to constant weight to obtain dry-based bagasse xylan.

[0035] (2) Weigh 1.5g of bagasse xylan obtained in step (1) into a four-necked flask equipped with a stirrer, a thermometer and a reflux device, then add 1.5g of vanillic acid and 15 to 20mL of analytically pure N,N- Dimethylacetamide was heated up to 50°C with stirring, and stirred for 30 minutes to dissolve.

[0036] (3) Add 0.15 mL of analytically pure pyridine and 0.07 g of 4-dimethylaminopyridine to the material obtained in step (2), stir and react at 55° C. for 8 hours under temperature control, and cool to room temperature after the reaction.

[0037] (4) Wash the material obtained in step (3) with 25 mL of analytically pure absolute ethanol, 25 mL of distilled water, and suction filter three times respectively.

[0038] (5) Suction filter the material in step (4), put the obtained filter cake into a watch gl...

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Abstract

The invention discloses a synthesis method of active bagasse xylan vanillate-g-HEMA/MAA/EA. The method includes: taking bagasse cassava starch as the main raw material, adopting vanillic acid as the esterifying agent, and carrying out catalytic synthesis of bagasse xylan vanillate in an N, N-dimethylacetamide organic solvent; and then using ammonium persulfate-sodium bisulfate as the initiator, and adopting hydroxyethyl methylacrylate/methacrylic acid/ethyl acrylate (HEMA/MAA/EA) as the mixed graft monomer to prepare the target product bagasse xylan vanillate-g-HEMA/MAA/EA. The product synthesized by the method provided by the invention improves the biological activity of raw bagasse xylan, and the introduced vanillic acid, HEMA, MAA and EA groups can improve the antioxidation, antimicrobial, antitumor and other biological activity of bagasse xylan.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for synthesizing biologically active bagasse xylan vanillic acid ester-g-HEMA / MAA / EA. Background technique [0002] Xylan is a kind of abundant renewable biological polysaccharide, its content is second only to cellulose on the earth, and it is the main component of cell wall hemicellulose in many plants such as cottonseed hulls, corncobs, wood chips, bagasse and so on. Xylan has unique biological activity and physiological functions, but natural xylan itself has performance defects, and its utilization value is not very high, and it is the most direct and effective method to improve the utilization value of xylan in plant waste It is to chemically modify the structure of xylan. For example, through esterification, grafting and compound denaturation, its molecular structure and functional properties can be changed. It is widely used in food industry, fine chemi...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/20C08F220/06C08F220/18C08B37/00
CPCC08B37/0057C08F251/00C08F220/20C08F220/06
Inventor 李和平张俊原甄然张淑芬柴建啟耿恺武晋雄龚俊郑光绿杨莹莹
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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