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Microfluidic photoinduction polymer modification method

A light-induced, polymer technology, applied in the field of microfluidic light-induced polymer modification, can solve the problems of slow polymerization reaction speed and large metal residue, and achieve fast reaction speed, reduced metal residue, and precise and controllable polymerization reaction. Effect

Active Publication Date: 2017-11-17
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a method for microfluidic light-induced polymer modification to solve the problems of slow polymerization reaction speed and large metal residues in the prior art.

Method used

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Embodiment 1

[0035] At room temperature, take 6% P(VDF-co-CTFE) (1.0g, 0.89mmol), copper chloride (19mg, 0.111mmol), dimethyl sulfoxide (15mL) and mix well under nitrogen atmosphere to obtain a homogeneous Phase solution A; the Me 6 -TREN (44.55μl, 0.167mmol), hydroxyethyl methacrylate (3.22mL, 26.7mmol) and dimethyl sulfoxide (15mL) were mixed uniformly under a nitrogen atmosphere to obtain a homogeneous solution B; The phase solutions were pumped into the micro-mixer through the Y-shaped mixing valve at the same time, and the flow rate of the two pumps was controlled to be 0.042mL / min. After being fully mixed in the micro-mixer, 400nm ultraviolet light (9W, 1.2mW / cm 2 ) irradiated microchannel reactor, while using compressed air to maintain the ambient temperature of the microchannel reactor is 20 ℃, the flow rate of the mixed system in the microchannel reactor is 0.083mL / min, and the retention time is 60min; Liquid, use a mixture of methanol and water (V / V=1:1) as a precipitant to prec...

Embodiment 2

[0037] At room temperature, take 9% P(VDF-co-CTFE) (1.0g, 0.89mmol), copper chloride (4.8mg, 0.028mmol), dimethyl sulfoxide (15mL) and mix well under nitrogen atmosphere to obtain Homogeneous solution A; cyclam-β (33.45mg, 0.167mmol), butyl acrylate (3.83mL, 26.7mmol) and dimethyl sulfoxide (15mL) were mixed uniformly under nitrogen atmosphere to obtain homogeneous solution B; The above two homogeneous solutions were simultaneously pumped into the micro-mixer through the Y-shaped mixing valve, and the flow rate of the two pumps was controlled to be 0.083mL / min. After being fully mixed in the micro-mixer, 380nm ultraviolet light (9W, 1.2mW / cm 2 ) irradiated microchannel reactor, while using compressed air to maintain the ambient temperature of the microchannel reactor is 20 ℃, the flow rate of the mixed system in the microchannel reactor is 0.167mL / min, and the retention time is 30min; Liquid, use a mixture of methanol and water (V / V=1:1) as a precipitant to precipitate and col...

Embodiment 3

[0039]At room temperature, take 50% P(VDF-co-CTFE) (1.0g, 0.89mmol), copper chloride (4.8mg, 0.028mmol), dimethyl sulfoxide (15mL) and mix well under nitrogen atmosphere to obtain Homogeneous solution A; TPMA (48.49mg, 0.167mmol), styrene (3.07mL, 26.7mmol) and dimethyl sulfoxide (15mL) were mixed uniformly under nitrogen atmosphere to obtain homogeneous solution B; the above two The homogeneous solution was pumped into the micro-mixer through the Y-type mixing valve at the same time, and the flow rate of the two pumps was controlled to be 0.083mL / min. After being fully mixed in the micro-mixer, 365nm ultraviolet light (18W, 2.1mW / cm 2 ) irradiated microchannel reactor, while using compressed air to maintain the ambient temperature of the microchannel reactor is 30 ℃, the flow rate of the mixed system in the microchannel reactor is 0.167mL / min, and the retention time is 30min; Liquid, use a mixture of methanol and water (V / V=1:1) as a precipitant to precipitate and collect the...

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Abstract

The invention discloses a microfluidic photoinduction polymer modification method. According to the microfluidic photoinduction polymer modification method, in a microreactor, photoinduction is adopted for grafting modifying of poly(vinylidene fluoride-co-chlorotrifluor ethylene) via free radical polymerization. Compared with the prior art, the microfluidic photoinduction polymer modification method possesses following advantages: microfluidic technology is capable of realizing accurate control and adjusting of reaction conditions, reducing catalyst using amount, and adjusting grafting amount; and the obtained modified polymer is high in application value in the field of microelectronics.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis, and in particular relates to a microfluidic light-induced polymer modification method. Background technique [0002] Fluoropolymers have high mechanical strength, corrosion resistance and high temperature resistance, and excellent electrical storage and insulation properties. Especially, the application of PVDF-based fluoropolymers in dielectric materials and other high-performance films is very promising. Its controllable polymerization research is getting more and more in-depth. But at the same time, the disadvantages of poor compatibility and serious metal residue still limit its application. Among a series of polymerization methods, controlled living radical polymerization (LRP) is an important method to adjust the molecular weight distribution of polymers, carry out molecular design, and synthesize polymers with precise structures. Many branches are derived from LRP, including ato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F259/08C08F220/28C08F220/18C08F212/08C08F220/44C08F220/14C08F2/48C08F2/01
CPCC08F2/01C08F2/48C08F259/08C08F220/281C08F220/1804
Inventor 郭凯崔国朋胡欣朱宁方正掌亚军
Owner NANJING UNIV OF TECH
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