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A kind of thermosensitive solid amine fiber material and its preparation method and application

An amine fiber and temperature-sensitive technology, which is applied in the field of temperature-sensitive solid amine fiber materials and its preparation, can solve the problems that the ratio of the two monomers cannot be accurately controlled, and there is no research and report on it, and achieves a fast desorption rate , Desorption energy consumption is low, and the effect of regulation and control is realized

Active Publication Date: 2016-08-24
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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  • A kind of thermosensitive solid amine fiber material and its preparation method and application

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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 fibe...

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Abstract

The invention discloses a temperature-sensitive solid amine fiber material, a preparation method and application thereof. The temperature-sensitive solid amine fiber material is synthesized by introducing amino groups and temperature-sensitive functional groups on the surface of the matrix fiber; the fiber material can change the water absorption rate of the control material by adjusting the temperature of the environment, and can also control the temperature-sensitive group. The different molar ratios of amino and amino groups are used to control the fiber materials to have different water absorption rates. The fiber material can be used in the field of intelligent special fiber products or the field of CO2 adsorption. The maximum adsorption capacity of the material for CO2 can reach 3.8mmol / g under the conditions of 35°C and 40°C; Complete desorption in 30 minutes at 70°C, which has the advantages of low desorption energy consumption and fast desorption rate.

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 materials...

Claims

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Application Information

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Patent Type & Authority Patents(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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