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Fluid mixer based on shape memory polymer

A memory polymer and fluid mixing technology, applied in the direction of mixers, mixing methods, chemical instruments and methods, etc., to achieve the effect of adjustable shape and size, low cost, and maintaining mixing quality

Active Publication Date: 2018-04-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in existing micro-mixers, the present invention utilizes the sensing and driving functions of thermotropic shape memory polymer materials to provide a fluid mixer based on shape memory polymers with a simple structure, which controls different Fluids mix with each other

Method used

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  • Fluid mixer based on shape memory polymer
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  • Fluid mixer based on shape memory polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 Shown is a fluid mixer for simultaneous mixing of two solutions. The material of the base 1 is polyurethane shape memory polymer, the glass transition temperature of which is about 35°C, the size of the base 1 is 60mm×60mm×4mm, and a heating plate is attached under the base 1. like figure 1 As shown, the surface of the substrate 1 has two liquid storage areas 2 and a liquid mixing area 4, and the two liquid storage areas 2 and one liquid mixing area 4 are cylindrical concaves obtained after indentation pre-deformation of the initial plane of the substrate 1. In the pre-deformation area of ​​the groove, the temperatures of the shape recovery of the liquid storage area 2 and the liquid mixing area 4 are different, which are 35°C and 45°C respectively. The radius of the groove in the liquid storage area 2 is 5 mm, and the depth is 2 mm. The radius of the groove in the liquid mixing area 4 is 7 mm, and the depth is 3 mm. A small cylindrical indentation pre-defor...

Embodiment 2

[0036] figure 2 A fluid mixer for the gradual mixing of three solutions. The material of the matrix 1 is epoxy polymer, and its glass transition temperature is about 45°C. The size of the substrate 1 is 40mm×40mm×4mm, and a heating plate is attached under the substrate 1 . like figure 2As shown, the surface of the substrate 1 has three liquid storage regions 2 and one liquid mixing region 4 . The three liquid storage areas 2 and one liquid mixing area 4 are all pre-deformed areas of cylindrical grooves obtained by indentation pre-deformation on the initial plane of the substrate 1 . The shape recovery temperature of two of the three liquid storage areas 2 is 45°C, the shape recovery temperature of one liquid storage area 2 is 55°C, and the shape recovery temperature of one liquid mixing area 4 is 65°C. The grooves of the three liquid storage areas 2 have a sectional radius of 3 mm and a depth of 1.5 mm; the groove of one liquid mixing area 4 has a sectional radius of 8 m...

Embodiment 3

[0040] The difference from Embodiment 2 is that the liquid mixing zone 4 is a plane formed by pre-deformation of the initial groove shape on the surface of the substrate, and the shape recovery temperature is 45° C.; a second connecting the liquid mixing zone 4 and the edge of the substrate 1 The channel area 5 is a flat surface obtained by pre-deformation of the original strip-shaped groove shape, and the shape recovery temperature is 65°C. In use, the difference from Example 2 is that when heated to 45°C, the shape recovery temperature is 45°C. The shape of the grooves in the two storage areas 2 gradually recovers to a plane, and at the same time, the mixed liquid area 4 gradually recovers from the plane to the original. The shape of the groove, the two liquids flow into the mixed liquid area 4, when heated to 55 ° C, the shape recovery temperature is 55 ° C in the groove of the liquid storage area 2, the shape recovery occurs and becomes a plane, and the solution in it gradu...

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Abstract

The present invention provides a shape memory polymer-based fluid mixer. The fluid mixer uses a shape memory polymer as a matrix, and the surface of the matrix has at least two liquid storage areas, at least one liquid mixing area, and at least two second a channel area, the first channel area is connected between the liquid storage area and the liquid mixing area, and the liquid storage area is a pre-deformed area that is flat before pre-deformation and a concave shape after pre-deformation, and the shape can be recovered, The volume of the liquid mixing region is greater than the sum of the volume of the liquid storage region and the volume of the first channel region, and the shape-recoverable pre-deformation region is connected with a driving device capable of providing a driving force for restoring the shape of the base body. The fluid mixer of the present invention is based on the shape memory function of the polymer material itself, and utilizes the sensitive characteristics of its shape recovery behavior to temperature, electricity, magnetism and other driving conditions to realize the function of mixing solutions, without the need for circuits, simple structure and shape. and size adjustable, easy to make and integrate, low cost.

Description

technical field [0001] The invention relates to a fluid mixer, in particular to a fluid mixer based on a shape memory polymer. Background technique [0002] At present, the focus of research in the field of fluid mixers is mainly on micro fluid mixers. The unique features of the microfluidic mixer are: small size, low energy consumption, low consumption of reactants, short analysis time, high efficiency, mainly used for the full mixing of various liquid reagents before biological and chemical reactions, in chemical analysis, biological And chemical sensing, molecular separation, nucleic acid sequencing and analysis, environmental monitoring and other fields have broad application prospects. For example, the micro-total analysis system has unique advantages, such as shorter response time, less reagent and sample consumption, easy miniaturization and automation, and high efficiency. The micro-mixer is just a kind of micro-device that can realize the above advantages, but the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F13/00B01F3/08
Inventor 吴雪莲代勇波吕海宝
Owner JIANGSU UNIV
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