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temperature responsive material sio 2 -Application of polyisopropylacrylamide

A propylacrylamide and temperature-responsive technology, which is applied in the application field of temperature-responsive material SiO2-polyisopropylacrylamide, can solve the problems of complex preparation process, high material toxicity, and high cost of material and raw materials, and achieves wide sources and high toxicity. Low, low cost effect

Active Publication Date: 2016-06-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of high raw material cost, complex preparation process and high toxicity of the existing materials used to prepare underwater oil drop transportation, and provides a temperature responsive material SiO 2 -Application of polyisopropylacrylamide

Method used

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  • temperature responsive material sio <sub>2</sub> -Application of polyisopropylacrylamide
  • temperature responsive material sio <sub>2</sub> -Application of polyisopropylacrylamide
  • temperature responsive material sio <sub>2</sub> -Application of polyisopropylacrylamide

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specific Embodiment approach 1

[0016] Specific implementation mode 1: The temperature-responsive material SiO in this embodiment mode 2 -The preparation method of polyisopropylacrylamide is carried out as follows:

[0017] 1. SiO 2 The nanoparticles are ultrasonically dispersed in deionized water, the ultrasonic frequency is 100KHz-500KHz, and the ultrasonic time is 20min-80min, to obtain a well-dispersed solution; the SiO 2 The ratio of the quality of nanoparticles to the volume of deionized water is 0.05g: (10-300) mL; the SiO 2 The particle size of nanoparticles is 50nm~2000nm;

[0018] 2. Add concentrated HNO to the dispersed solution obtained in step 1 3 , N,N-methylenebisacrylamide crosslinking agent and isopropylacrylamide monomer, and then under the protection of inert gas, at a temperature of 45-55°C and a stirring speed of 150r / min-800r / min Stir for 20min to 60min; the concentrated HNO described in step 2 3 The volume of the SiO as described in step one 2 The ratio of the mass of nanoparticl...

specific Embodiment approach 2

[0022] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the SiO described in step one 2 The ratio of the mass of nanoparticles to the volume of deionized water is 0.05g:25mL. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0023]Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 2, stir for 30 min at a temperature of 50° C. and a stirring speed of 200 r / min. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

temperature responsive material SiO 2 - Application of polyisopropylacrylamide. The present invention relates to the use of temperature responsive materials. The invention aims to solve the problems of high raw material cost, complicated preparation process and high toxicity of the obtained substance used in the preparation of underwater oil drop transportation. Application: temperature responsive material SiO of the present invention 2 - Polyisopropylacrylamide is used in the transportation of organic solvents underwater. The raw materials used in the method of the invention have low cost and low toxicity, and the method is simple and feasible.

Description

technical field [0001] The present invention relates to the use of temperature responsive materials. Background technique [0002] The manipulation of underwater oil droplets has a wide range of applications in chemical reactions, biological analysis, transport without loss of mass, and oil-water separation. However, the existing underwater oil droplet transportation technology generally has problems such as complex equipment required, high cost, low efficiency of oil droplet transportation, and inaccurate transportation of tiny droplets, which hinders the development of underwater droplet transportation. In recent years, smart nanocomposites, which have developed rapidly in recent years, have attracted extensive attention in droplet transport due to their simple preparation methods, strong versatility, and low cost. Polyisopropylacrylamide (PNIPAm) is a kind of intelligent polymer with temperature response characteristics, which can change the molecular chain structure und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/54C08F222/38
Inventor 潘钦敏楚盈
Owner HARBIN INST OF TECH