A kind of nano chitin material and its preparation method and application

A nano-chitin and chitin technology, applied in the field of materials, can solve the problems of consumption of large hydrochloric acid acid waste liquid, negative impact on the environment, etc., and achieve the effects of reducing pollution, reducing emissions, and highly efficient enzyme immobilization carriers

Active Publication Date: 2021-03-30
FOSHAN UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, hydrochloric acid hydrolysis is commonly used to prepare nano-chitin. This method needs to consume a large amount of hydrochloric acid and produce acidic waste liquid, and needs to add a large amount of alkali to neutralize the waste liquid, which has a negative impact on the environment.

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 kind of nano chitin material and its preparation method and application
  • A kind of nano chitin material and its preparation method and application
  • A kind of nano chitin material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh the chitin raw material and p-toluenesulfonic acid-choline chloride with a mass ratio of 1:20, add the chitin raw material to p-toluenesulfonic acid-choline chloride, and continuously mix the mixed samples at a temperature of 95°C Stir the reaction for 30 minutes to obtain the chitin raw material / p-toluenesulfonic acid-choline chloride reaction mixture. Under the condition of continuous stirring, the reaction mixture was added to ethanol (the mass ratio of the two was 1:20), and the mixed solution was centrifuged at 4000rpm for 10min to collect the centrifuged solid part, and then 50mL ethanol Mix with the solid part, centrifuge the mixed solution for 5 minutes under the condition of 4000rpm, and repeat this step once more to obtain the nanoscale chitin product. After the reaction, the p-toluenesulfonic acid-choline chloride was separated from the ethanol solution by rotary evaporation, and the p-toluenesulfonic acid-choline chloride mixed solution was recovered. ...

Embodiment 2

[0039] Weigh the chitin raw material and p-toluenesulfonic acid-choline chloride with a mass ratio of 4:10, add the chitin raw material to p-toluenesulfonic acid-choline chloride, and continuously mix the mixed samples at a temperature of 80°C Stir the reaction for 60 minutes to obtain the chitin raw material / p-toluenesulfonic acid-choline chloride reaction mixture. Under the condition of continuous stirring, the reaction mixture was added to ethanol (the mass ratio of the two was 1:10), and the mixed solution was centrifuged at 4000rpm for 10min, and the centrifuged solid part was collected, and then mixed with 50mL ethanol Mix with the solid part, centrifuge the mixed solution for 5 minutes under the condition of 4000rpm, and repeat this step once more to obtain the nanoscale chitin product. After the reaction, the p-toluenesulfonic acid-choline chloride was separated from the ethanol solution by rotary evaporation, and the p-toluenesulfonic acid-choline chloride mixed solut...

Embodiment 3

[0041]Weigh the chitin raw material and p-toluenesulfonic acid-choline chloride with a mass ratio of 1:100000, add the chitin raw material to p-toluenesulfonic acid-choline chloride, and continuously mix the mixed samples at a temperature of 100°C Stir the reaction for 30 minutes to obtain the chitin raw material / p-toluenesulfonic acid-choline chloride reaction mixture. Under the condition of continuous stirring, the reaction mixture was added to ethanol (the mass ratio of the two was 1:25), and the mixed solution was centrifuged at 4000rpm for 10min, the centrifuged solid part was collected, and then mixed with 50mL ethanol Mix with the solid part, centrifuge the mixed solution for 5 minutes under the condition of 4000rpm, and repeat this step once more to obtain the nanoscale chitin product. After the reaction, the p-toluenesulfonic acid-choline chloride was separated from the ethanol solution by rotary evaporation, and the p-toluenesulfonic acid-choline chloride mixed solut...

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

PropertyMeasurementUnit
widthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a nano chitin material, and a preparation method and application thereof. The preparation method comprises the following steps: mixing a chitin raw material with a p-toluenesulfonic acid-choline chloride solution, continuously carrying out stirring for a reaction to uniformly stir chitin, then mixing the obtained chitin with a dispersing agent, separating out nano chitin from the mixed solution, and repeatedly carrying out washing to obtain the nano chitin material. Compared with a conventional mineral acid hydrolysis method, the method greatly reduces emission of wasteacid liquor and reduces environment pollution, and the prepared nano chitin material can be used as an efficient enzyme immobilization carrier.

Description

technical field [0001] The invention relates to the field of materials, in particular to a nano-chitin material and its preparation method and application. Background technique [0002] Shrimp and crab are the main objects of aquaculture or fishing. Every year, a large amount of discarded shrimp and crab shells are produced in the world due to the consumption of shrimp, crab, and lobster. The total amount of these wastes can reach 6 to 8 million tons. A considerable amount of shrimp and crab shells are discarded as rubbish, producing stench and polluting the environment. [0003] In fact, shrimp and crab shells contain many valuable components, such as protein, chitin, astaxanthin and so on. Among them, chitin (C 8 h 13 o 5 N) n , also known as chitin, chitin, English name Chitin. In 1811, French scholar Braconno discovered chitin, and in 1823, Odier extracted chitin from the shells of crustaceans. Chitin has a wide range of applications, and has extremely important i...

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): C08B37/08C12N11/02
CPCC08B37/003C12N11/02
Inventor 曹诗林古伟明赖林浩
Owner FOSHAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap