Construction method of intelligent reversible self-assembly structure based on core-shell type phase-change cellulose nano crystals under solid-phase condition

A nanocrystal, cellulose technology, applied in the field of nanomaterial self-assembly

Active Publication Date: 2021-01-19
NORTHEAST FORESTRY UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that nanoparticles can only reversibly self-assemble under liquid phase conditions, and provides a method for constructing an intelligent reversible self-assembled structure based on core-shell phase-change cellulose nanocrystals under solid-phase conditions

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
  • Construction method of intelligent reversible self-assembly structure based on core-shell type phase-change cellulose nano crystals under solid-phase condition
  • Construction method of intelligent reversible self-assembly structure based on core-shell type phase-change cellulose nano crystals under solid-phase condition
  • Construction method of intelligent reversible self-assembly structure based on core-shell type phase-change cellulose nano crystals under solid-phase condition

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0044] Specific Embodiment 1: In this embodiment, a method for constructing an intelligent reversible self-assembled structure based on core-shell phase-change cellulose nanocrystals under solid-state conditions is carried out in the following steps:

[0045] 1. Preparation of cellulose nanocrystals:

[0046] ①. Add microcrystalline cellulose to aqueous hydrochloric acid solution with a concentration of 5mol / L-8mol / L to obtain suspension A. Under the condition of a power of 60W-120W, ultrasonicate the suspension A in an ice-water bath for 10min-20min , and then stand at room temperature for 15h to 20h to obtain the mixture;

[0047] The volume ratio of the quality of the microcrystalline cellulose to the hydrochloric acid aqueous solution whose concentration is 5mol / L~8mol / L is 1g:(30~40)mL;

[0048] ②. Under the conditions of magnetic stirring speed of 200r / min-500r / min and temperature of 90℃-100℃, reflux the mixture for 3h-4h, and then naturally cool to room temperature to ...

specific Embodiment approach 2

[0076] Embodiment 2: This embodiment differs from Embodiment 1 in that the unsaturated fatty acid chloride described in Step 2 ② is an unsaturated fatty acid chloride with an aliphatic carbon chain length of 10-13. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0077] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the long-chain alkyl mercaptan described in step 3 ① is a long-chain alkyl mercaptan with a carbon chain length of 14-22. Others are the same as in the first or second embodiment.

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
contact angleaaaaaaaaaa
melting pointaaaaaaaaaa
contact angleaaaaaaaaaa
Login to view more

Abstract

The invention discloses a construction method of an intelligent reversible self-assembly structure based on core-shell type phase-change cellulose nano crystals under a solid-phase condition, and belongs to the field of self-assembly of nano materials. The invention aims to solve the problem that nano particles can only be reversibly self-assembled under a liquid phase condition. The preparation method comprises the following steps: 1, preparing cellulose nano crystals; 2, preparing a core-shell type cellulose nano crystal containing a flexible spacer; 3, preparing a core-shell type cellulosenano crystal containing a flexible spacer and a phase change structure unit; and 4, constructing the heat-sensitive PC-FS-CNCS membrane with a reversible self-repairing intelligent assembly structureunder a solid-phase condition. The method is used for constructing the intelligent reversible self-assembly structure based on the core-shell type phase-change cellulose nano crystals under a solid-phase condition.

Description

technical field [0001] The invention belongs to the field of self-assembly of nanometer materials. Background technique [0002] Self-assembly is usually a process in which nano- or micro-scale basic units spontaneously form ordered structures, and is widely used in the synthesis of materials in the fields of sensor devices, energy storage, drug delivery, and catalysis. In addition to entropy-driven self-assembly, most chemically assisted self-assembly on the surface of nanoparticles is driven by different intermolecular forces, such as hydrogen bonds, dipole-dipole interactions, etc. These interactions can be tuned by adjusting temperature, interface, solvent, and pH to achieve the desired structure. Therefore, self-assembly by nanoparticles provides a tailored, bottom-up approach for materials design. Although self-assembled materials have achieved significant breakthroughs in these fields, self-assembled materials with reversible multifunctionality are rarely studied. ...

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 Applications(China)
IPC IPC(8): C08J5/18C08B3/14C08B3/10C08L1/10
CPCC08B3/10C08B3/14C08J5/18C08J2301/10
Inventor 王永贵郎真邱泽谢延军肖泽芳王海刚黄薇汤相宇
Owner NORTHEAST FORESTRY 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