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Preparation method of PPS (polyphenylene sulfide)-based N-methylimidazole strong base type ion exchange fiber

A technology of methyl imidazole and exchange fiber, which is applied in the field of preparation of strong alkali ion exchange fiber, can solve the problems of complicated synthesis steps, high price of polytetrafluoroethylene, and achieves good chemical stability, good adsorption and regeneration performance, adsorption and regeneration. large amount of effect

Inactive Publication Date: 2013-09-18
佛山市中耀卓邦企业管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method adopts the radiation initiation technology, and the polytetrafluoroethylene matrix used is expensive and the synthesis steps are cumbersome

Method used

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  • Preparation method of PPS (polyphenylene sulfide)-based N-methylimidazole strong base type ion exchange fiber
  • Preparation method of PPS (polyphenylene sulfide)-based N-methylimidazole strong base type ion exchange fiber

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Effect test

Embodiment 1

[0033] The preparation method of PPS-based N-methylimidazole strong base ion exchange fiber of the present invention, its detailed steps are as follows:

[0034] a. Preparation of chloromethylated polyphenylene sulfide fiber: Weigh 6.8896g of polyphenylene sulfide fiber and place it in a hydrothermal kettle, add solvent dichloroethane 30mL, chloromethyl ether 50mL and catalyst anhydrous tetrachloride Tin 2mL screw tight, swell for 16h; after swelling, place the hydrothermal kettle in a 100°C oil bath to heat for 2h, cool to room temperature after heating, and filter out the product after cooling; Soak in HCl for 10 hours, extract with ethanol for 6 hours, wash with water until neutral, then vacuum dry to constant weight (vacuum degree 0.08Mpa, drying temperature 60°C, drying time 24 hours), and dry to obtain chloromethylated polyphenylene sulfide fibers; (Compared to the 34.40% weight gain of the original polyphenylene sulfide fiber, the elemental analysis results of the chlor...

Embodiment 2

[0036] Embodiment 2: basically the same as Embodiment 1, the difference is:

[0037] a. Preparation of chloromethylated polyphenylene sulfide fiber: Weigh 6.9807g of polyphenylene sulfide fiber into a hydrothermal kettle, add solvent dichloroethane 30mL, chloromethyl ether 50mL and catalyst anhydrous tin tetrachloride Tighten 2mL and swell for 18h; after swelling, place the hydrothermal kettle in an oil bath at 100°C for heating reaction for 2h, cool to room temperature after heating, and filter out the obtained product after cooling; soak the obtained product in 5mol / L HCl for 12h in turn , extracted with ethanol for 6 hours, washed with water until neutral, vacuum-dried to constant weight (vacuum degree 0.08Mpa, drying temperature 60°C, drying time 24h), after drying, chloromethylated polyphenylene sulfide fibers were obtained; (the obtained chloromethyl Compared with the original polyphenylene sulfide fiber, the weight gain of the modified polyphenylene sulfide fiber is 35....

Embodiment 3

[0039] Embodiment 3: basically the same as Embodiment 1, the difference is:

[0040] In step b: Weigh 4.0764 g of the chloromethylated polyphenylene sulfide fiber prepared in step a, put it in a 250 mL three-neck flask, add 100 mL of dichloroethane to swell for 20 hours, add 100 mL of ethanol, 7.01 mL of N-methyl 0.42 g of imidazole and tetrabutylammonium bromide, heat the reaction solution to 55 ° C for 10 h, after the reaction, filter out the fiber, wash the obtained fiber with distilled water until it is neutral, and place it in a Soxhlet extractor after washing Extract with ethanol for 8 hours, soak in 1 mol / L hydrochloric acid solution for 12 hours after extraction, wash the product with distilled water until neutral, and finally vacuum dry to constant weight (vacuum degree 0.08Mpa, drying temperature 80°C, drying time 24 hours ), after drying, PPS-based N-methylimidazole type strong base ion exchange fibers were obtained (the quality of the obtained PPS-based N-methylimi...

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Abstract

The invention discloses a preparation method of a PPS (polyphenylene sulfide)-based N-methylimidazole strong base type ion exchange fiber. The method comprises the following steps of: firstly, on the basis of using polyphenylene sulfide fiber as a basic raw material, adding dichloroethane, chloromethyl ether and tin chloride for swelling, heating up for reaction after swelling, cooling after reaction, filtering out the product, and processing the product to get the chloromethylated polyphenylene sulfide fiber; then, adding dichloroethane for swelling, adding alcohol, N-methylimidazole and tetrabutylammonium bromide after swelling, heating up for reaction, filtering out the product after reaction, and sequentially washing, extracting, washing with brine and drying the product, thereby obtaining the product PPS -based N-methylimidazole strong base type ion exchange fiber. The PPS-based N-methylimidazole strong base type ion exchange fiber prepared according to the invention has the characteristics of high oxidation resistance, excellent chemical stability, larger adsorbing capacity, excellent absorption and regeneration performance and the like. The preparation method of the PPS -based N-methylimidazole strong base type ion exchange fiber is simple, low in production cost and easy to generalize in industry.

Description

technical field [0001] The invention relates to a preparation method of a strong base ion exchange fiber, in particular to a preparation method of a PPS-based N-methylimidazole strong base ion exchange fiber. Background technique [0002] The commercial strong basic ion exchange fiber mainly passes through 60 CO γ The copolymer of styrene and divinylbenzene is grafted on the fiber substrate by irradiation, and then prepared by two steps of chloromethylation and quaternization. The synthesis process is cumbersome and the cost is high. In addition, strong basic ion exchange fibers generally exist in the OH type. During the application process, the quaternary amine functional group undergoes irreversible Hofmann degradation and transforms into a tertiary amine, which will eventually cause the group to have no basicity. Therefore, strong alkali ion exchange fibers should not be used in alkaline conditions for a long time. Therefore, their further application in industry is l...

Claims

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Application Information

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IPC IPC(8): D06M13/165D06M13/352B01J41/12D06M101/30B01J41/13
Inventor 原思国周冬菊姚化杰代立波张登科马寅初惠跟雷张捷崔兰
Owner 佛山市中耀卓邦企业管理有限公司
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