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Synthesis method of bagasse xylan o-methylbenzoate-g-AM (Acrylamide)/MMA (Methyl Methacrylate)

A technology of methyl benzoate and synthesis method, which is applied in the directions of drug combination and antitumor drug, can solve the problems of complex structure, insufficient functionality, low stability of xylan, etc., and achieves improved water solubility and raw material utilization. The effect of high rate and easy control of process conditions

Inactive Publication Date: 2019-03-01
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] As a kind of polysaccharide, xylan has a variety of biological activities, but its application is greatly limited due to its low stability, complex structure, and insufficient functionality.

Method used

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  • Synthesis method of bagasse xylan o-methylbenzoate-g-AM (Acrylamide)/MMA (Methyl Methacrylate)
  • Synthesis method of bagasse xylan o-methylbenzoate-g-AM (Acrylamide)/MMA (Methyl Methacrylate)
  • Synthesis method of bagasse xylan o-methylbenzoate-g-AM (Acrylamide)/MMA (Methyl Methacrylate)

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Experimental program
Comparison scheme
Effect test

Embodiment

[0036] (1) Dry 10 g of bagasse xylan in a constant-temperature vacuum oven at 60° C. for 24 hours to constant weight to obtain dry-based bagasse xylan.

[0037] (2) Weigh 0.6g of ammonium persulfate and 0.5g of sodium bisulfite in a 50mL beaker, then add 20mL of deionized water to make an initiator solution for later use.

[0038] (3) Weigh 4gAM and 5mL of analytically pure MMA into another 250mL flask, then add 30mL of deionized water, 0.2g of N,N'-methylene bisacrylamide and 1.1g of industrial grade OP-10, and use high shear Stir and disperse in an emulsifier for 1.5 hours, prepare a mixed monomer solution, pour it into a 100mL constant pressure dropping funnel, and set aside.

[0039] (4) Weigh 5 g of dry bagasse xylan obtained in step (1) and add it into a 250 mL four-neck flask, then add 20 mL of deionized water, raise the temperature to 50° C., stir and disperse for 20 minutes. Begin to add dropwise the mixed monomer solution of step (3) gained, control dropwise in 6 ho...

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Abstract

The invention discloses a synthesis method of bagasse xylan o-methylbenzoate-g-AM (Acrylamide) / MMA (Methyl Methacrylate). The synthesis method takes natural macromolecular bioactive bagasse xylan as amain raw material, acrylamide (AM) and methyl methacrylate (MMA) as a mixed grafting monomer, and ammonium persulfate and sodium hydrogensulfite as an initiation system to synthesize bagasse xylan-g-AM / MMA; then 4-dimethylaminopyridine is used as a catalyst and o-methylbenzoic acid is used as an esterification agent; the catalyst and, esterification agent and a grafting copolymer bagasse xylan-g-AM / MMA are subjected to catalystic esterification reaction in an N,N-dimethylacetylamide (DMA) solvent to synthesize a final product bagasse xylan syringateo-methylbenzoate-g-AM / MMA. According to thesynthesis method disclosed by the invention, three types of anti-bioactivity groups are introduced through esterification, grafting and crosslinking compound modification of the bagasse xylan, so thatthe activity including water solubility, cancer resistance and, bacterium resistance and the like of original bagasse xylan is enhanced; the bagasse xylan o-methylbenzoate-g-AM / MMA has relatively high application value in the fields including medicines and, foods and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for synthesizing bagasse xylan o-toluate-g-AM / MMA. Background technique [0002] As a kind of polysaccharide, xylan has a variety of biological activities, but its application is greatly limited due to the defects of low stability, complex structure and insufficient functionality of xylan. Therefore, under certain conditions, xylan is chemically modified to make the hydroxyl contained on the surface of xylan combine with special functional groups to undergo chemical reactions (such as esterification, grafting, etc.) to improve the biological activity of xylan. Select groups that have anticancer activity or can enhance the anticancer activity of bagasse xylan, and use esterification or grafting methods to construct and design graft-esterified bagasse xylan derivatives, which can enhance the anticancer activity of bagasse xylan. cancer activity. Aromatic carbox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/14C08F8/14C08F251/00C08F220/14C08F220/56A61P35/00
CPCA61P35/00C08B37/0057C08F8/14C08F251/00C08F220/56C08F220/14
Inventor 李和平柴建啟耿恺张淑芬武晋雄张俊龚俊
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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