Synthesis method for preparing sulfonated polysulfurate (polyurethane) from polysulfurate (polyurethane) polymer

A technology of sulfonated polysulfuric acid and a synthesis method, which is applied in the synthesis field of preparing sulfonated polysulfate, can solve the problems of increased mass transfer resistance, increased production cost, waste of expensive protein and the like, and achieves the effect of good acid and alkali resistance

Inactive Publication Date: 2020-05-08
内蒙古图微新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the serious impact of protein contamination on the membrane separation process has become one of the main reasons restricting the efficiency of membrane separation technology
Membrane fouling leads to increased mass transfer resistan

Method used

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  • Synthesis method for preparing sulfonated polysulfurate (polyurethane) from polysulfurate (polyurethane) polymer
  • Synthesis method for preparing sulfonated polysulfurate (polyurethane) from polysulfurate (polyurethane) polymer
  • Synthesis method for preparing sulfonated polysulfurate (polyurethane) from polysulfurate (polyurethane) polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Synthesis of Sulfonated Polysulfate with Sulfonation Degree of 20%

[0040] Dissolve 10g of polymer in 50ml of N-methylpyrrolidone, add 10g (0.1mol) of concentrated sulfuric acid, a sulfonating agent, to the polysulfate system at room temperature and constant temperature, and stir for reaction. The reaction time is 4 hours. After the reaction The product was poured into water and precipitated to obtain 9.8 g of white solid sulfonated polysulfate polymer, the degree of sulfonation was 20%, and the yield was 93%. The indicators of the polymer are as follows:

[0041] Mn=40000, water contact angle 68°~70°, salt interception rate (NaCO 3 )=15%~17%.

[0042] Among the above-mentioned sulfonation reactions, when using concentrated sulfuric acid, chlorosulfonic acid, sulfur trioxide and other sulfonating reagents, the solvent is methylene dichloride, ethylene dichloride, chloroform, ethyl acetate, acetonitrile, toluene or dioxane, Sulfonated polysulfate compounds with simil...

Embodiment 2

[0044] Synthesis of Sulfonated Polysulfate with Sulfonation Degree 25%~30%

[0045] Dissolve 15g of polymer in 50ml of N-methylpyrrolidone, add 10g (0.1mol) of concentrated sulfuric acid, a sulfonating reagent, into the polysulfate system at room temperature and constant temperature, and stir for reaction. The reaction time is 6 hours. After the reaction The product was poured into water and precipitated to obtain 9.9 g of a white solid sulfonated polysulfate polymer with a sulfonation degree of 30% and a yield of 93%. The indicators of the polymer are as follows:

[0046] Mn=40000, water contact angle 55°~58°, salt interception rate (NaCO 3 )=20%~25%.

[0047] Among the above-mentioned sulfonation reactions, when using concentrated sulfuric acid, chlorosulfonic acid, sulfur trioxide and other sulfonating reagents, the solvent is methylene dichloride, ethylene dichloride, chloroform, ethyl acetate, acetonitrile, toluene or dioxane, Sulfonated polysulfate compounds with simi...

Embodiment 3

[0049] Heterogeneous Synthesis of Sulfonated Polysulfate with Sulfonation Degree 15%~20%

[0050] At room temperature and constant temperature, add 10 g (0.1 mol) of concentrated sulfuric acid, a sulfonating reagent, into 15 g of polysulfate powder system. The system is in the form of a paste, stirred and reacted. The reaction time is 4 hours. After the reaction, the product is poured into water to precipitate, and the obtained The product was 9.9 g of white solid sulfonated polysulfate polymer, the degree of sulfonation was 20%, and the yield was 94%. The indicators of the polymer are as follows:

[0051] Mn=40000, water contact angle 68°~70°, salt interception rate (NaCO 3 )=15%~17%.

[0052] Among the above-mentioned sulfonation reactions, when using concentrated sulfuric acid, chlorosulfonic acid, sulfur trioxide and other sulfonating reagents, the solvent is methylene dichloride, ethylene dichloride, chloroform, ethyl acetate, acetonitrile, toluene or dioxane, Sulfonat...

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Abstract

The invention discloses a synthesis method for preparing sulfonated polysulfurate (polyurethane) from a polysulfurate (polyurethane) polymer, and belongs to the technical field of macromolecules. Thesulfonated polysulfate is prepared from polysulfate (ammonia). The polysulfate obtained after sulfonation has good hydrophilicity under the condition of maintaining the original properties of the polymer, and the surface charge property of the polymer is enhanced. When applied to the fields of water treatment membranes and the like, the sulfonated polysulfurate (polyurethane) effectively improve the properties such as salt rejection rate and the like of the polymer, and has a positive effect on application of the polysulfate compound to the fields of water treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a synthetic method for preparing sulfonated poly(urethane)sulfate polymers as raw materials. Background technique [0002] As one of the most important chemical synthetic materials, polyester has also been widely used in the fields of fiber, packaging, engineering plastics, and medical materials. Driven by technological progress and market demand, the global polyester industry has developed rapidly in the past 20 years. The synthetic process of polyester has undergone a lot of research and improvement, and now it is possible to obtain an optimized process route with simple process flow, high energy saving efficiency, less pollution, and high product recyclability. [0003] In the application of polyester in the field of water separation technology, it is mostly used in the preparation of ultrafiltration membranes for water treatment. The membran...

Claims

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Application Information

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IPC IPC(8): C08G75/26
CPCC08G75/26
Inventor 王小雪周云斌
Owner 内蒙古图微新材料科技有限公司
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