Anion functionalized vinyl chloride polymer and preparation method thereof

A technology for converting vinyl chloride and anion is applied in the field of anion-functionalized vinyl chloride polymer and its preparation, which can solve the problems of insignificant hydrophilic effect, limited application scope of vinyl chloride polymer materials, and improvement, etc. The effect of negative charge performance and cation exchange adsorption performance

Active Publication Date: 2016-10-05
HAINAN LITREE PURIFYING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More representative ones are: Chinese patent (CN101402701A) discloses a production method of vinyl chloride-vinyl acetate-maleic anhydride terpolymer. In this PVC copolymer, maleic anhydride belongs to anionic comonomer and can be used for PVC polymerization. The monomer provides hydrophilicity, the content of this monomer component is 2.2wt%, it can be used to make the hydrophilic component of PVC filter membrane, but the hydrophilic effect is not obvious
Chinese patent (CN02808360.1) has reported a kind of vinylidene chloride copolymer particle composition, is alkyl acrylate, acrylonitrile, styrene monomer among the monomers copolymerized with vinylidene chloride, and its copolymer can prepare many A layer of film or membrane, the monomer copolymerized with it is mainly to adjust the barrier and crystallinity of vinylidene chloride, without improving the hydrophilicity
Greatly limit the scope of application of vinyl chloride polymer materials

Method used

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  • Anion functionalized vinyl chloride polymer and preparation method thereof
  • Anion functionalized vinyl chloride polymer and preparation method thereof
  • Anion functionalized vinyl chloride polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] Synthesis of anionically functionalized vinyl chloride polymer P1:

[0130] Add 2000ml deionized water, additive polyvinyl alcohol (PVA) 1.2g, additive hydroxypropyl methylcellulose (HPMC) 0.4g, initiator peroxydicarbonate bis(2-ethylhexyl) in the stainless steel reaction kettle (EHP) 1g, evacuated and nitrogen filled repeatedly 3 times, then added 1500g of vinyl chloride, 27.6g of hydroxyethyl acrylate and 5g of allyl 2-bromo-2-methylpropionate, and pre-dispersed and stirred at room temperature for 30 minutes. The temperature was raised to a polymerization temperature of 47° C. to carry out a polymerization reaction. React for 12 hours, stop heating when the pressure drop in the kettle reaches 0.2MPa, vacuumize for 10 minutes, let air in for 5 minutes, vacuumize and fill with nitrogen three times, then add sodium bicarbonate to pH 8, add sodium acrylate 22.6g , copper 5g, cuprous chloride 5g, 2,2'-bipyridine (bpy) 16g, then temperature control 60 ℃, react for 24 hours...

Embodiment 2

[0146] Synthesis of anionic functionalized vinyl chloride polymer P2:

[0147] P2 synthetic process with reference to embodiment 1. The formula is shown in Table 1 and the process parameters are shown in Table 2.

[0148] The P2 structure and performance characterization methods are the same as those described in Example 1. The general formula of the P2 structural formula is the same as that of P1, and the parameters in the general formula are shown in Table 3;

Embodiment 3

[0150] Synthesis of anion-functionalized vinyl chloride polymer P3:

[0151] The synthesis process of P3 refers to Example 1. The formula is shown in Table 1 and the process parameters are shown in Table 2.

[0152] The P3 structure and performance characterization methods are the same as those described in Example 1. The general structure of P3 is the same as that of P1, and the parameters in the general formula are shown in Table 3; the molecular weight, molecular weight distribution and content of anion functionalized monomer components in the polymer of P3 are shown in Table 4.

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Abstract

The invention discloses an anion functionalized vinyl chloride polymer and a preparation method thereof. According to the invention, a chlorine-containing monomer, a graftable active monomer and a hydrophilic functional monomer are adopted as copolymerization monomers; an active precursor polymer containing side group with atom transfer radical polymerization activity on the main chain is synthesized by polymerization in an aqueous dispersed phase; in an alkaline environment, on a solid-liquid interface, the active side group initiates anion functionalization monomers to perform interfacial atom transfer radical polymerization; through the polymerization, the anion functionalized vinyl chloride polymer containing anionic side chain is formed. The anionic side chain contains sulfonic acid and carboxylic acid groups, and have high negative charge performance, such that the polymer has high hydrophilic property and cation exchange adsorption property. Therefore, the polymer can be independently used, or blended with other resins, for preparing high-hydrophilicity separation membrane products, battery separation membranes, cation exchange adsorption materials, flexible packaging materials, and the like. Therefore, the application range of vinyl chloride polymers is greatly expanded. The polymer and the method have a good application prospect.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an anionic functionalized vinyl chloride polymer and a preparation method thereof. Background technique [0002] PVC is a non-toxic, odorless white powder. It has good chemical stability and good plasticity. Except for a few organic solvents, it can resist acid, alkali and salt at room temperature; PVC has poor thermal stability and light resistance, and it can start to decompose and change color above 140 °C. Based on the above characteristics, PVC is mainly used in the production of profiles, profiles, pipe fittings, plates, sheets, cable sheaths, hard or soft tubes, blood transfusion equipment, and films. And in the process of use, through continuous research and modification, the application field of PVC has been greatly expanded. [0003] Polyvinylidene chloride has the characteristics of flame resistance, corrosion resistance and good air tightness. Due to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F259/04C08F259/06C08F220/06C08F220/58C08F222/02C08F228/02C08F212/14C08L51/00
Inventor 朱宝库王纳川姚之侃崔月肖玲赵斌王俊陈良刚陈清
Owner HAINAN LITREE PURIFYING TECH CO LTD
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