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Production of hydroxyacetate cellulose/ethene-vinyl acetate mixture

A technology of cellulose diacetate and vinyl acetate, which is applied in the field of preparation of cellulose diacetate/ethylene-vinyl acetate blends, can solve problems such as no practical significance and application value, and achieve the effect of low price

Inactive Publication Date: 2005-12-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, using cellulose diacetate and ethylene-vinyl acetate membrane alone to separate methanol / methyl-tert-butyl ether mixed system has no practical significance and application value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] 2g of ethylene-vinyl acetate with a vinyl acetate content of 32 (w / w)% was first added to 20ml of cyclohexane, completely dissolved at 45°C, then 180ml of dioxane was added to mix well, and then 18g Cellulose diacetate was stirred under magnetic force until it was completely dissolved to obtain a uniform and transparent solution.

Embodiment 2

[0011] 2g of ethylene-vinyl acetate with a vinyl acetate content of 32 (w / w)% was first added to 20ml of tetrahydrofuran, completely dissolved at 45°C, then 180ml of dioxane was added to mix well, and then 18g of diacetic acid was added Cellulose was stirred under magnetic force until it was completely dissolved to obtain a uniform and transparent solution.

Embodiment 3

[0013] 2g of ethylene-vinyl acetate with a vinyl acetate content of 32 (w / w)% was first added to 20ml of chloroform, completely dissolved at 45°C, then 180ml of dioxane was added to mix well, and then 18g of diacetic acid was added Cellulose was stirred under magnetic force until it was completely dissolved to obtain a uniform and transparent solution.

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PUM

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Abstract

Production of diacetate fibre / ethane-vinyl acetate mixture is carried out by dissolving EVA 1í½30wt% into organic solvent 10í½70wt%, adding into dioxane 30í½90wt%, mixing, adding into CA 70í½99wt%, dissolving to obtain uniform solution at 35í½45íÒC, using high-molecular EVA as second component and mixtures of two organic solvents as solvent, and regulating composition of mixture and solvent to prepare CA / EVA mixed membrane material. It makes CA / EVA solution prepare porous membrane and densifying membrane and can be used for reverse osmose membrane and penetrating gasification membrane for separating organic mixture. It costs low.

Description

technical field [0001] The invention relates to the fields of polymer material preparation and membrane separation, in particular to a preparation method of a cellulose diacetate / ethylene-vinyl acetate blend. technical background [0002] With the rapid development of science and technology in the world, various industries such as microelectronics, information, bioengineering, aerospace and environment have put forward higher requirements for materials. Polymer materials are an important class of materials, such as engineering materials, photoelectric materials, and membrane separation materials. Membrane separation technology is a high technology adapted to the development of contemporary new industries. It uses natural or artificially prepared membranes with selective permeation properties to separate, classify, purify or enrich two-component or multi-component liquids or gases. . It has played an important role in energy, chemical industry, biology, medicine, water reso...

Claims

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Application Information

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IPC IPC(8): C08L1/12
Inventor 钱锦文安全福张鹏
Owner ZHEJIANG UNIV
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