Novel degradation method for polyvinyl alcohol fibers

A technology of polyvinyl alcohol fibers and new methods, applied in chemical instruments and methods, plastic recycling, recycling technology, etc., can solve problems such as unreported

Inactive Publication Date: 2017-02-01
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to degrade polyvinyl alcohol fibers simply and efficiently, the present invention synthesized the composite catalyst Fe 3 o 4 @NiO @CoS @WO 3 , and the material has been successfully used in the degradation of polyvinyl alcohol fibers. The degradation of polyvinyl alcohol fibers catalyzed by this composite material has not been reported yet.

Method used

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  • Novel degradation method for polyvinyl alcohol fibers

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Embodiment 1

[0009] Embodiment one: a kind of new method of polyvinyl alcohol fiber degradation, comprises the following processing steps:

[0010] The invention provides a new method for the degradation of polyvinyl alcohol fibers; concrete synthesis and degradation steps are as follows: (1) first adopt solvothermal method, polyacrylic acid and iron trichloride are dissolved in diethylene glycol with a ratio of 1:1 (15mL), heated to 250°C with vigorous stirring, stirred for 14h, and centrifuged to obtain black powder solid Fe 3 o 4 . (2) NiCl 2 , Fe 3 o 4 Mix in a mixed solvent of deionized water, absolute ethanol and n-butanol at a ratio of 3:1, stir at room temperature for 50 minutes, heat at 150°C for 12 hours, and centrifugally dry to obtain the product Fe 3 o 4 @NiO. (3) CoCl 2 with Fe 3 o 4 @NiO was mixed with deionized water at a ratio of 2:1, and ethylenediamine was added dropwise under stirring. When the solution turned yellow, hexadecyltrimethylammonium bromide and thi...

Embodiment 2

[0011] Embodiment two: a new method for polyvinyl alcohol fiber degradation, comprising the following process steps:

[0012] The invention provides a new method for polyvinyl alcohol fiber degradation; concrete synthesis and degradation steps are as follows: (1) first adopt solvothermal method, polyacrylic acid and iron trichloride are dissolved in diethylene glycol with the ratio of 2:1 (12mL), vigorously stirred and heated to 180°C, stirred for 12h, centrifuged and dried to obtain black powder solid Fe 3 o 4 . (2) NiCl 2 , Fe 3 o 4 Mix in a mixed solvent of deionized water, absolute ethanol and n-butanol at a ratio of 2:1, stir at room temperature for 80 minutes, heat at 190°C for 24 hours, and centrifugally dry to obtain the product Fe 3 o 4 @NiO. (3) CoCl 2 with Fe 3 o 4 @NiO is mixed with deionized water at a ratio of 2:1, and ethylenediamine is added dropwise under stirring. When the solution turns yellow, cetyltrimethylammonium bromide and thioacetamide are a...

Embodiment 3

[0013] Embodiment three: a new method for polyvinyl alcohol fiber degradation, comprising the following process steps:

[0014] The invention provides a new method for polyvinyl alcohol fiber degradation; concrete synthesis and degradation steps are as follows: (1) first adopt solvothermal method, polyacrylic acid and iron trichloride are dissolved in diethylene glycol with a ratio of 3:1 (5-15mL), heated to 250°C with vigorous stirring, and after stirring for 6h, centrifuged and dried to obtain black powder solid Fe3O4. (2) NiCl 2 , Fe 3 o 4 Mix in a mixed solvent of deionized water, absolute ethanol and n-butanol at a ratio of 3:1, stir at room temperature for 90 minutes, heat at 160°C for 36 hours, and centrifugally dry to obtain the product Fe 3 o 4 @NiO. (3) CoCl 2 with Fe 3 o 4 @NiO was mixed with deionized water in a ratio of 4:1, and ethylenediamine was added dropwise under stirring. When the solution turned yellow, hexadecyltrimethylammonium bromide and thioac...

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Abstract

The invention provides a novel degradation method for polyvinyl alcohol fibers. A novel composite magnetic material Fe3O4@NiO@CoS@WO3 is prepared and successfully used for polyvinyl alcohol fiber degradation. Preparing of the modified composite material is complex, but adopted materials are common and low in cost. The prepared composite catalyst can effectively and catalytically degrade polyvinyl alcohol fibers and can also be easily recycled. A preparing technology of the catalyst is simple and environmentally friendly.

Description

technical field [0001] The invention relates to a new method for degrading polyvinyl alcohol fibers; by preparing a new type of composite magnetic material and successfully using the material in the degradation of polyvinyl alcohol fibers, the material has a high performance in the degradation of polyvinyl alcohol fibers Catalytic efficiency belongs to the field of degradation of chemical materials and industrial materials. Background technique [0002] Polyvinyl alcohol fiber has the characteristics of softness, warmth retention and moisture absorption. Its initial discovery and application are also called "synthetic cotton" because of its similar properties to cotton. Its strength and corrosion resistance are superior to cotton, and it is lighter than cotton, and has good chemical stability. Therefore, it can be used to make canvas, hose, rubber shoes, overalls, fishing nets and cables. In addition, polyvinyl alcohol fibers also have great value in papermaking and other...

Claims

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Application Information

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IPC IPC(8): B01J27/049C08J11/10C08L29/04
CPCC08J11/10B01J27/049C08J2329/04B01J35/33Y02W30/62
Inventor 王大伟葛晨阳石刚李赢沈亚男
Owner JIANGNAN UNIV
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