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Polyethylene glycol-polycaprolactone phase change fiber and preparation method thereof

A technology of polycaprolactone and polyethylene glycol, applied in fiber treatment, chemical instruments and methods, conjugated synthetic polymer artificial filaments, etc., can solve the problem of limiting the application of polyethylene glycol and difficult polyethylene glycol Effective coating and other issues to achieve excellent thermal and mechanical properties, excellent mechanical properties, and avoid sticking effects

Active Publication Date: 2020-06-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of polyethylene glycol itself, it is difficult to achieve effective coating of polyethylene glycol when polyethylene glycol and polymer materials are coaxially electrospun, which limits the application of polyethylene glycol as a phase change material.

Method used

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  • Polyethylene glycol-polycaprolactone phase change fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add polyethylene glycol (with a weight average molecular weight of 1000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=1 / 1) and magnetically stir at room temperature until completely dissolved, Ultrasound for 20 minutes to obtain polyethylene glycol spinning solution, the mass concentration of polyethylene glycol is 30%;

[0034] (2) Add polycaprolactone (weight-average molecular weight: 80,000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=3 / 7) and magnetically stir at room temperature until completely dissolved, Obtain polycaprolactone spinning solution, the mass concentration of polycaprolactone in the shell solution is 10%;

[0035] (3) Take the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, place them in syringes respectively, and fix them on the syringe pump; use an inner diameter of 0.5mm , a coaxial spi...

Embodiment 2

[0039] (1) Add polyethylene glycol (with a weight average molecular weight of 1000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=1 / 1) and magnetically stir at room temperature until completely dissolved, Ultrasound for 20 minutes to obtain polyethylene glycol spinning solution, the mass concentration of polyethylene glycol is 50%;

[0040] (2) Add polycaprolactone (weight-average molecular weight: 80,000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=3 / 7) and magnetically stir at room temperature until completely dissolved, Obtain polycaprolactone spinning solution, the mass concentration of polycaprolactone is 10%;

[0041](3) Take the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, place them in syringes respectively, and fix them on the syringe pump; use an inner diameter of 0.5mm , a coaxial spinning needle with an ou...

Embodiment 3

[0045] (1) Add polyethylene glycol (with a weight average molecular weight of 1000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=1 / 1) and magnetically stir at room temperature until completely dissolved, Ultrasound for 20 minutes to obtain polyethylene glycol spinning solution, the mass concentration of polyethylene glycol is 70%;

[0046] (2) Add polycaprolactone (weight-average molecular weight: 80,000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=3 / 7) and magnetically stir at room temperature until completely dissolved, Obtain polycaprolactone spinning solution, the mass concentration of polycaprolactone is 10%;

[0047] (3) Take the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, place them in syringes respectively, and fix them on the syringe pump; use an inner diameter of 0.5mm , a coaxial spinning needle with an o...

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Abstract

The invention relates to a polyethylene glycol-polycaprolactone phase change fiber and a preparation method thereof, and belongs to the field of phase change nanofiber materials. The fiber is of a core-shell structure, polyethylene glycol serves as a core layer, polycaprolactone serves as a shell layer, the weight-average molecular weight of polyethylene glycol is 1000, and the weight-average molecular weight of polycaprolactone is 80000; and based on 100% of the mass of the fiber, the mass fraction of polyethylene glycol is 21%-48%, and the mass fraction of polycaprolactone is 52%-79%. According to the method, a polyethylene glycol spinning solution is used as an inner tube spinning solution, a polycaprolactone spinning solution is used as an outer tube spinning solution, coaxial electrostatic spinning is performed, and the phase-change fiber is obtained after a solvent is removed. The phase-change fiber shows a complete core-shell structure, has the characteristics of two raw material, has excellent thermal properties and mechanical properties, can adjust the temperature within a certain range, and is environmentally friendly and biodegradable; and the phase-change fiber can be applied to the field of medical phase-change materials and the field of functional textile materials.

Description

technical field [0001] The invention relates to a polyethylene glycol-polycaprolactone phase-change fiber and a preparation method thereof, belonging to the field of phase-change nanofiber materials. Background technique [0002] Developing and manufacturing more efficient and cheaper thermal energy storage technology is a very important option to solve energy problems. Phase-change energy storage materials, that is, phase-change materials, are materials with heat storage and temperature adjustment functions, which are realized by utilizing the characteristics of phase-change media to release or absorb latent heat during the phase change process. The phase change fiber is to add the phase change material to the fiber carrier, in which the fiber carrier acts as a support material to provide mechanical properties, and the phase change material plays the role of thermal energy storage and release. [0003] Polyethylene glycol has shown potential as a phase change material due ...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/16C09K5/06D01D5/34D01D5/00
CPCC09K5/063D01D5/003D01D5/0069D01D5/0076D01D5/0092D01D5/34D01F8/14D01F8/16
Inventor 张爱英杨家乐王翔冯增国
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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