Method for preparing adhesive coating and adhesive film based on layer-by-layer assembly technology

A layer-by-layer assembly and bonding film technology, applied in the direction of film/sheet adhesives, adhesives, etc.

Inactive Publication Date: 2013-11-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of self-supporting films as adhesive films via layer-by-layer assembly has never been reported.

Method used

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  • Method for preparing adhesive coating and adhesive film based on layer-by-layer assembly technology
  • Method for preparing adhesive coating and adhesive film based on layer-by-layer assembly technology
  • Method for preparing adhesive coating and adhesive film based on layer-by-layer assembly technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Preparation and Adhesive Application of Adhesive Coatings on Glass Surfaces.

[0038] The glass substrate was alternately immersed in PAH-D (1mg / mL, pH=7.4) and HA solution (1mg / mL, pH=7.4) for 15 minutes each, and this step was repeated to obtain an adhesive coating. After each step of immersion, the substrate is washed with water and dried with nitrogen. figure 1 The process of film thickness changing with the number of deposition cycles was tracked and monitored by surface profiler. It shows that the adhesion coating grows in a typical exponential growth form, that is, the thickness of the adhesion coating increases rapidly as the number of deposition cycles increases.

[0039] In this example, the concentrations of PAH-D and HA solutions are both 1 mg / mL, and the pH values ​​are both physiological pH values, that is, 7.4. Changing the concentration of the solution will not have a significant impact on the construction of the membrane, but if the concent...

Embodiment 2

[0041] Example 2: Preparation and Adhesive Application of Adhesive Film

[0042] (PAH-D / HA)*30 membrane has very good guest molecule loading capacity. We firstly spin-coated 20 mg / mL cellulose acetate acetone solution on the glass surface at 3000 rpm to obtain ~1.5 micron cellulose acetate sacrificial layer on the glass surface. After cleaning in the plasma cleaning agent for 3 minutes, build a 30-period adhesive coating of PAH-D / HA on the surface of the cellulose acetate sacrificial layer (its concentration and pH value are as in Example 1), and soak it as a whole in 15mM pH = 7.4 ibuprofen solution for 3 hours; followed by immersing the whole in acetone for 3 minutes, so that the layer-by-layer assembled polyelectrolyte adhesive coating and the glass sheet were separated by the dissolution of cellulose acetate, thus obtaining a self-supporting Adhesive film. And transfer the self-supporting layer-by-layer assembly membrane to another container with acetone for rinsing for ...

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Abstract

The invention belongs to the technical field of film adhesion, and particularly relates to a method for preparing an adhesive coating and an adhesive film based on a layer-by-layer assembly technology. The method comprises the following steps of: treating a substrate; preparing a solution; assembling a layer-by-layer assembly film; self-supporting the layer-by-layer assembly film; bonding under the coaction of water and pressure, and the like. The method is not limited by the size and shape of a substrate, and is suitable for substrates with planes, curved surfaces and irregular surfaces. The maximum shearing tensile strength of an adhesive coating prepared on a glass surface can be up to 6.9+ / -0.9MPa, and can be up to 2.7+ / -0.9MPa after the adhesive coating is prepared into a self-support film on a periosteum surface. Meanwhile, the prepared coating has very high transmission rate, and the average transmission rate of a visible light region is over 80 percent. The method has the advantages of simple process, readily-available materials, low cost and environment-friendly process, and is suitable for occasions such as lens connection, glass bonding, clinical medical treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of film bonding, and in particular relates to a method for preparing an adhesive coating and an adhesive film by using layer-by-layer assembly technology. Background technique [0002] With the rapid development of adhesive material application and production technology research, due to its unique adhesive properties, the application field of adhesive materials is also expanding and refining. Traditional adhesives are generally applied in a coating manner, which may lead to uneven distribution of the adhesive, thereby reducing the adhesive effect. At the same time, the thickness of the adhesive applied is generally at the level of millimeters or above, which leads to a large amount of adhesive and increases the cost. Moreover, most of the traditional adhesives need to be heated or use organic solvents, which are harmful to the human body and may cause environmental pollution during their bonding and later u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02
Inventor 孙俊奇张健夫
Owner JILIN UNIV
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