Cyclodextrin supermolecular composite phase-change energy-storage superfine fiber and preparation method and application thereof

A composite phase transition and ultra-fine fiber technology, applied in fiber processing, fiber chemical characteristics, cellulose/protein conjugated rayon, etc., can solve problems such as complex post-processing methods, and achieve low cost and biocompatibility. The effect of good and good thermal stability

Inactive Publication Date: 2013-07-17
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This postprocessing m

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Dissolve 100 parts by mass of cellulose acetate (CA, number average molecular weight 30,000, degree of acetyl substitution 2.5) in a mixed solvent prepared with acetone and N,N-dimethylformamide at a mass ratio of 1:1. into a solution with a mass fraction of 15%; 30 mass parts of α-cyclodextrin and 100 mass parts of polyethylene glycol-4000 are dissolved in water and N,N-dimethylformamide at a mass ratio of 1:1 A solution with a mass fraction of 15% was prepared in a mixed solvent, mechanically stirred for 2 hours to form a cyclodextrin inclusion complex, and then added to a cellulose acetate solution and mechanically stirred to form a mixed spinning solution.

[0031] (2) Put the mixed spinning solution into a liquid storage tank with a spinneret and spin it by high-voltage electrospinning to obtain ultra-fine fibers; the spinning conditions are: the ambient temperature is 25°C, the relative humidity is 90%, the electrospinning voltage is 80kV, the distance between...

Embodiment 2

[0035] (1) Dissolve 100 parts by mass of hydroxypropyl cellulose (highly substituted hydroxypropyl cellulose, number average molecular weight 80,000) in a mixed solvent prepared with ethanol and water at a mass ratio of 5:1 to make a mass fraction of 10% solution; prepared by dissolving 10 parts by mass of β-cyclodextrin and 20 parts by mass of polyethylene glycol-10000 in water and N,N-dimethylacetamide in a mixed solvent with a mass ratio of 1:1 The solution with a mass fraction of 15% was mechanically stirred for 2 hours to form a cyclodextrin inclusion complex, and then added to a hydroxypropyl cellulose solution and mechanically stirred to form a mixed spinning solution.

[0036] (2) Put the mixed spinning solution into a liquid storage tank with a spinneret and spin it by high-voltage electrospinning to obtain ultrafine fibers; the spinning conditions are: the ambient temperature is 35°C, the relative humidity is 30%, the electrospinning voltage is 5kV, the distance betw...

Embodiment 3

[0040](1) Dissolve 20 parts by mass of hydroxyethyl methylcellulose (molecular weight: 40,000) in a mixed solvent prepared with ethanol and N,N-dimethylformamide at a mass ratio of 1:1 to make a mass fraction of 5% solution; 100 parts by mass of β-permethylated cyclodextrin and 200 parts by mass of pentaerythritol are dissolved in water and N,N-dimethylformamide in a mixed solvent with a mass ratio of 3:1 to make mass The solution with a fraction of 20% was mechanically stirred for 2 hours to form a cyclodextrin inclusion complex, and then hydroxyethyl methylcellulose solution was added and mechanically stirred to form a mixed spinning solution.

[0041] (2) Put the mixed spinning solution into a liquid storage tank with a spinneret and spin it by high-voltage electrospinning to obtain superfine fibers; the spinning conditions are: the ambient temperature is 15°C, the relative humidity is 55%, the electrospinning voltage is 10kV, the distance between the spinneret and the coll...

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Abstract

The invention discloses a cyclodextrin supermolecular composite phase-change energy-storage superfine fiber and a preparation method and application thereof and belongs to the field of functional fiber materials. The cyclodextrin supermolecular composite phase-change energy-storage superfine fiber is prepared by following compositions, by mass, 10-100 parts of cyclodextrin or cyclodextrin derivatives, 20-200 parts of phase change substances and 20-100 parts of cellulose polymer through the electrostatic spinning technology, and can be applied to fields of biomedical materials, separating adsorption materials, energy-saving heat-insulating materials and the like. A supermolecular composite fiber is formed by cyclodextrin and phase-change work components through hydrogen bond and other non-covalent interaction, and the phase change substances are enabled to be less prone to desorption from the cellulose polymer while the obtained energy-storage superfine fiber does not need posttreatment processes like surface crosslinking, so that improvement of heat stability of the materials and simplification of preparation process are facilitated. The main raw materials are natural or seminatural products, so that the cyclodextrin supermolecular composite phase-change energy-storage superfine fiber is good in biocompatibility, nontoxic and harmless, easy to degradation, low in cost and environment-friendly.

Description

technical field [0001] The invention belongs to the field of functional fiber materials, and in particular relates to a cyclodextrin supramolecular composite phase change energy storage superfine fiber and its preparation method and application. Background technique [0002] Electrospinning (Electrospinning) technology is a new processing technology different from conventional methods to prepare nano-scale ultrafine fibers, which can conveniently and efficiently prepare continuous micron and nano-scale fiber materials. The diameter of electrospinning can reach the micron and nanometer scale, and it has a continuous structure and a huge specific surface area, and can be made into various morphological structures, and the electrospinning device is simple, the process is small, the cost is low and the output rate is high. These characteristics make functional materials based on electrospinning technology have broad application prospects. On the other hand, phase change energy ...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F1/10D01D5/00
Inventor 史珺罗志有罗红军张香连
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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