Unlock instant, AI-driven research and patent intelligence for your innovation.

A Molecularly Imprinted Polymer and Its Application in Adsorbing Ascorbic Acid

A technology of ascorbic acid and molecular imprinting, applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as less application of ascorbic acid, and achieve the effects of good ascorbic acid capacity, easy operation and simple regeneration method.

Active Publication Date: 2021-10-15
ZHEJIANG UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, at least 100 countries in the world are engaged in molecular imprinting research, mainly concentrated in more than 10 countries such as Germany, Sweden, China, France, Japan and the United States, and the fields involved include environment, medicine, food, etc., but the application in ascorbic acid There are very few applications on

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Molecularly Imprinted Polymer and Its Application in Adsorbing Ascorbic Acid
  • A Molecularly Imprinted Polymer and Its Application in Adsorbing Ascorbic Acid
  • A Molecularly Imprinted Polymer and Its Application in Adsorbing Ascorbic Acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of molecularly imprinted polymers

[0023] (1) 1.36g (0.03mol) of polyvinyl alcohol and 150ml of water were placed in a round bottom flask, stirred to dissolve and heated to 55°C. 0.235g (0.001mol) of ascorbic acid and 0.4201g (0.006mol) of acrylamide were dissolved in 20ml of water, and then added to the flask. Then 14.8 ml (0.634 mol) of ethylene glycol dimethacrylate, 0.21 g (0.001 mol) of azobisisobutyronitrile and 10 ml (0.446 mol) of toluene were mixed, stirred, dissolved and added dropwise to the flask. Airtight with nitrogen gas for 10 minutes, keep the temperature at 55°C, and stir at 800r / min for 8 hours to obtain 0.36g of non-molecularly imprinted polymer wrapped with ascorbic acid (template molecule). Figure 5 shown.

[0024] (2) Preparation of molecularly imprinted compounds that remove template molecules: Pour 10 ml of eluent (anhydrous methanol) into 0.36 g of non-molecularly imprinted polymers containing ascorbic acid prepared in step (...

Embodiment 2

[0031] 1. Preparation of molecularly imprinted polymers

[0032] (1) 0.7g (0.01mol) of polyvinyl alcohol and 150ml of water are placed in a flask, stirred to dissolve and heated to 55°C. 0.0615g (0.0004mol) of ascorbic acid and 1.6307g (0.016mol) of acrylamide were dissolved in 20ml of water and added to the flask. Then mix 14.6ml (0.634mol) of ethylene glycol dimethacrylate, 0.2g (0.001mol) of azobisisobutyronitrile and 10ml (0.446mol) of toluene, stir, dissolve and drop into the flask . After 10 minutes of blowing nitrogen gas, it was sealed, kept at a constant temperature of 55°C, and stirred at a speed of 800 r / min for 8 hours to obtain 0.36 g of a non-molecularly imprinted polymer containing ascorbic acid.

[0033] (2) Preparation of molecularly imprinted polymers without template molecules: Pour 10 ml of eluent (anhydrous methanol) into 0.1 g of ascorbic acid-containing molecularly imprinted polymers prepared in step (1), and sonicate at 60°C at 40 Hz for 20 min , fil...

Embodiment 3

[0039] 1. Preparation of molecularly imprinted polymers

[0040] (1) 0.34g (0.008mol) of polyvinyl alcohol and 150ml of water are placed in a flask, stirred to dissolve and heated to 55°C. Dissolve 0.0534g (0.0003mol) of ascorbic acid and 0.8444g (0.01mol) of acrylamide in 20ml of water and add them to the flask. Then 15.1ml (0.674mol) of ethylene glycol dimethacrylate, 0.2g (0.001mol) of azobisisobutyronitrile and 10ml (0.446mol) of toluene were mixed, stirred, dissolved and added dropwise to the flask . After 10 minutes of blowing nitrogen gas, it was sealed, kept at a constant temperature of 55° C., and stirred at a speed of 800 r / min for 8 hours to obtain 0.34 g of a non-molecularly imprinted polymer containing ascorbic acid.

[0041] (2) Preparation of molecularly imprinted compounds that remove template molecules: Pour 10 ml of eluent (anhydrous methanol) into 0.2 g of non-molecularly imprinted polymers containing ascorbic acid prepared in step (1), and ultrasonicate a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a molecularly imprinted polymer and its application in absorbing ascorbic acid. The molecularly imprinted polymer is prepared by the following method: stirring and dissolving polyvinyl alcohol and water and heating to 55°C, adding an aqueous solution of ascorbic acid and acrylamide , then dropwise add the toluene solution of ethylene glycol dimethacrylate and azobisisobutyronitrile, airtight with nitrogen gas for 10 minutes, keep the temperature at 55°C, stir and react at a speed of 800r / min for 8 hours, and obtain non-molecular imprinting containing ascorbic acid Polymer: adding anhydrous methanol to the non-molecularly imprinted polymer containing ascorbic acid, ultrasonicating at 60° C. and 40 Hz for 20 minutes, filtering, and drying the filter cake to obtain the molecularly imprinted polymer without ascorbic acid. The molecularly imprinted polymer prepared by the invention has good ability to absorb ascorbic acid, the adsorption rate is as high as 80%, and can protect 90% of ascorbic acid molecules in vitamin C from being oxidized when placed normally.

Description

(1) Technical field [0001] The invention relates to a molecularly imprinted polymer, in particular to a molecularly imprinted polymer and its application in absorbing ascorbic acid. (2) Background technology [0002] Molecular imprinting is defined as the "construction of ligands" using templates, through polymerization processes, to facilitate the formation of recognition sites during covalent assembly of the bulk phase, and subsequent removal of the templates, in the vacated spaces necessary for recognition of moieties or All templates. At present, at least 100 countries in the world are engaged in molecular imprinting research, mainly concentrated in more than 10 countries such as Germany, Sweden, China, France, Japan and the United States, and the fields involved include environment, medicine, food, etc., but the application in ascorbic acid There are very few applications. [0003] Ascorbic acid is relatively stable in dry air. It is impure and many natural products c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/14C08F220/56C08J9/28B01J20/26B01J20/30
Inventor 张诚郑晓周王平
Owner ZHEJIANG UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com