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A kind of deep eutectic solvent, environment-friendly adhesive and preparation method thereof

An adhesive and environmentally friendly technology, applied in the direction of adhesive additives, non-polymer adhesive additives, cyclodextrin adhesives, etc., to achieve the effects of easy-to-obtain raw materials, strong viscosity, and simple preparation methods

Active Publication Date: 2021-07-02
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research on deep eutectic solvents is used in the fields of extraction, separation, catalysis, etc., but there are few researches and reports on the application of environmentally friendly adhesives.

Method used

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  • A kind of deep eutectic solvent, environment-friendly adhesive and preparation method thereof
  • A kind of deep eutectic solvent, environment-friendly adhesive and preparation method thereof
  • A kind of deep eutectic solvent, environment-friendly adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Citric acid, malic acid and tartaric acid were selected as hydrogen bond donors; α-cyclodextrin, β-cyclodextrin and γ-cyclodextrin were selected as hydrogen bond acceptors. Twenty-two adhesives based on deep eutectic solvents were prepared in different proportions. See Table 1 below for details.

[0032] Table 1 Composition of the adhesive

[0033]

Embodiment 2

[0035] According to the proportions in the above Table 1, weigh the hydrogen bond donor and the hydrogen bond acceptor, put them into a round bottom flask, heat and stir at 80°C for 1 hour, until the solid melts, and continue to stir on a magnetic stirrer for 20 minutes to obtain 22 kinds of Adhesives based on deep eutectic solvents.

Embodiment 3

[0036] Embodiment 3 performance test

[0037] Different performance tests were carried out on the prepared adhesive according to the following methods.

[0038] 1. Adhesive Characterization

[0039] The first step is to determine the chemical structures of 22 adhesives by using Fourier transform infrared spectroscopy and hydrogen nuclear magnetic spectroscopy. Among them, the detection of infrared spectra of six representative adhesives AM1 and AM2, BM1 and BM2, GM1 and GM2 The result is as figure 1 As shown, the detection results of the proton nuclear magnetic resonance spectra of three representative adhesives AM-1, BM-1 and GM-1 are as follows figure 2 As shown, it can be judged from the results that the synthesized substance is the required adhesive.

[0040] In the second step, the physical properties such as crystal form and thermal stability of 22 kinds of adhesives were studied by powder X single crystal diffractometer and thermogravimetric analyzer. Among them, t...

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Abstract

The invention discloses a deep eutectic solvent, an environment-friendly adhesive and a preparation method thereof. The deep eutectic solvent is formed by mixing a hydrogen bond donor and a hydrogen bond acceptor, and the hydrogen bond donor is citric acid, One of malic acid and tartaric acid, the hydrogen bond acceptor is cyclodextrin; the cyclodextrin is one of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin; the Malic acid is L-(-)-malic acid; said tartaric acid is L-(+)-tartaric acid. The preparation method of the environment-friendly adhesive is prepared by using any of the above-mentioned deep eutectic solvents as raw materials. The deep eutectic solvent provided by the present invention can be used to prepare environment-friendly adhesives, and the prepared environment-friendly adhesives are environmentally friendly, strong in viscosity, simple in preparation method, readily available in raw materials, strong in applicability, and resistant to organic solvents etc., so it has great potential as an adhesive.

Description

technical field [0001] The invention relates to the technical field of adhesives, and more specifically, to a deep eutectic solvent, an environment-friendly adhesive and a preparation method thereof. Background technique [0002] Adhesives are one of the most important auxiliary materials and are widely used in packaging operations. Adhesives are sticky substances that use their viscous properties to join two separate materials together. Adhesive is actually a general term for various stress materials that connect or bond the same or different materials. There are mainly three types: liquid, paste and solid. [0003] Adhesives are divided into natural adhesives, such as starch, protein, dextrin, animal glue, shellac, hide glue, rosin and other biological adhesives; asphalt and other mineral adhesives are also included. The other is synthetic, including inorganic adhesives such as water glass, and organic adhesives such as synthetic resins and synthetic rubber. Natural ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J105/16C09J11/06
CPCC09J11/06C09J105/16C08K5/092
Inventor 谭志坚董盛谊王朝云吴双根易永健蔡昌湧曾粮斌余旺汪洪鹰杨媛茹李懋
Owner INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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