Thermo-sensitive solid amine fiber material as well as preparation method and application thereof

A technology of fiber material and amine fiber, which is applied in the field of temperature-sensitive solid amine fiber material and its preparation, can solve problems such as the lack of research and reports, and the inability to accurately control the ratio of the two monomers.

Active Publication Date: 2015-02-18
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Or N-alkylacrylamide and another functional monomer are used to form a dual monomer copolymerization graft. Most of these reports are that the two monomers are added to the reaction solution at the same time, and the ratio of the two monomers in the product cannot be accurately controlled.
Moreover, there have been no related studies and reports on the use of temperature-sensitive fibers as gas adsorption materials.

Method used

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  • Thermo-sensitive solid amine fiber material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. To prepare temperature-sensitive solid amine fiber material, the steps are as follows:

[0055] (1) Pretreatment: Boil the polypropylene (PP) fiber with a 12wt% sodium hydroxide solution for 30 minutes, rinse it, soak it in acetone for 24 hours, wash it and dry it at 70°C. The matrix fiber after the above alkali treatment is used 60 Co-γ rays were irradiated, the irradiation dose was 40kGy, and the irradiation time was 50h.

[0056] (2) Grafting reaction: Mix the pretreated PP fiber and acrylamide solution, control the ratio of fiber weight to the volume of acrylamide solution to 1:50, and the concentration of grafting monomer is 20wt%, PP fiber and acrylamide After the amide solution was mixed evenly, 0.16 wt % of ferrous ammonium sulfate hexahydrate was added, and the mixture was stirred and reacted at 90° C. for 5 hours. After the reaction, the homopolymer was repeatedly boiled and washed several times to obtain grafted fibers grafted with acrylamide.

[0057] ...

Embodiment 2

[0062] 1. To prepare temperature-sensitive solid amine fiber material, the steps are as follows:

[0063] (1) Pretreatment: Boil the polypropylene (PP) fiber with a 12wt% sodium hydroxide solution for 30 minutes, rinse it, soak it in acetone for 24 hours, wash it and dry it at 70°C. The matrix fiber after the above alkali treatment is used 60 Co-γ rays were irradiated, the irradiation dose was 40kGy, and the irradiation time was 50h.

[0064] (2) Grafting reaction: Mix the pretreated PP fiber and acrylamide solution, control the ratio of fiber weight to the volume of acrylamide solution to 1:50, and the concentration of grafting monomer is 5wt%, PP fiber and acrylamide After the amide solution was mixed evenly, 0.08 wt% of ammonium ferrous sulfate hexahydrate was added, and stirred and reacted at 90° C. for 5 hours. After the reaction, the homopolymer was repeatedly boiled and washed several times to obtain grafted fibers grafted with acrylamide.

[0065] (3) Amination reac...

Embodiment 3

[0070] 1. To prepare temperature-sensitive solid amine fiber material, the steps are as follows:

[0071](1) Pretreatment: Boil the viscose fiber (VF) with 5wt% sodium hydroxide solution for 10 minutes, rinse it, soak it in acetone for 24 hours, wash it and dry it at 70°C. The matrix fiber after the above alkali treatment is used 60 Co-γ rays were irradiated, the irradiation dose was 20kGy, and the irradiation time was 24h.

[0072] (2) Grafting reaction: mix the pretreated viscose fiber and acrylamide solution, control the ratio of fiber weight to volume of acrylamide solution to 1:50, and the concentration of grafting monomer is 10wt%, viscose fiber After mixing evenly with the acrylamide solution, add 4wt% cerium ammonium nitrate, and stir and react at 70°C for 0.5 hours. After the reaction, the homopolymer was repeatedly boiled and washed several times to obtain grafted fibers grafted with acrylamide.

[0073] (3) Amination reaction: take the above-mentioned grafted fib...

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Abstract

The invention discloses a thermo-sensitive solid amine fiber material as well as a preparation method and application thereof. The thermo-sensitive solid amine fiber material is prepared by introducing amine and thermo-sensitive functional groups to the surface of base fiber through synthesis. By adopting the fiber material, the water absorption rate of the material can be changed and controlled by adjusting the change of ambient temperature, and the fiber material can be also controlled to have different water absorption rates by regulating and controlling different mole ratios of thermo-sensitive groups to amino. The fiber material can be applied to the field of intelligent special fiber products or the field of CO2 adsorption, the highest adsorption capacity of the fiber material to CO2 at 35 DEG C and 40 DEG C can be up to 3.8mmol/g, and moreover, CO2 can be completely desorbed at 70 DEG C within 30 minutes after being adsorbed by using the fiber material, so that the thermo-sensitive solid amine fiber material has the advantages of low desorption energy consumption and rapid desorption velocity.

Description

technical field [0001] The invention belongs to the technical field of intelligent polymer fiber materials. More specifically, it relates to a temperature-sensitive solid amine fiber material and its preparation method and application. Background technique [0002] At present, solid amine fibers are widely used in CO 2 of adsorption. Solid amine fiber is mainly prepared by functional modification with fiber as the matrix. The preparation of solid amine fiber mainly includes impregnation method and grafting method. The grafting method is mainly divided into direct functionalization of functional groups and graft copolymerization reaction. The direct functionalization of functional groups is mainly to use reactive groups such as hydroxyl groups, active halogen atoms, and epoxy groups on the fiber to introduce amino groups, or to introduce amino groups by hydrolysis of nitrile groups. The graft copolymerization method refers to the introduction of direct functional material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/38D06M10/00D06M13/41D06M13/332D06M14/28B01J20/26B01J20/30B01D53/02D06M101/20D06M101/06
CPCY02C20/40
Inventor 陈水挟王禹何辉
Owner SUN YAT SEN UNIV
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