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A cationic functionalized vinyl chloride polymer and its preparation method

A technology of vinyl chloride and cation, which is applied in the field of cationic functionalized vinyl chloride polymer and its preparation, which can solve the problems of low content of copolymerization components, lack of hydrophilicity, and inability to prepare antibacterial materials, etc., to expand the variety Effect

Active Publication Date: 2018-03-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There has never been a water-soluble positively charged monomer copolymerized with vinyl chloride monomers in the existing vinyl chloride copolymers, so the existing vinyl chloride copolymers cannot be specially used to prepare antibacterial materials
And the comonomers in the existing vinyl chloride copolymers are mostly oil-soluble monomers (such as vinyl acetate, acrylate, etc.), and the copolymerization content can reach 10-20wt%; anhydride, acrylic acid, etc.), but since the vinyl chloride monomer is in the oil phase and the comonomer is in the water phase during the polymerization process, the two phases cannot be miscible, resulting in a particularly low content of water-soluble monomer components in the copolymer, only 5wt%, which makes the existing vinyl chloride copolymers do not have good hydrophilicity
The low content of copolymer components and the absence of positively charged comonomers greatly limit the application range of vinyl chloride polymer materials

Method used

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  • A cationic functionalized vinyl chloride polymer and its preparation method
  • A cationic functionalized vinyl chloride polymer and its preparation method
  • A cationic functionalized vinyl chloride polymer and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] Synthesis of Cationic Functionalized Vinyl Chloride Polymer P1:

[0127] 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, feed air for 5 minutes, vacuumize and fill with nitrogen repeatedly three times, then add 29.5g of trimethylallyl ammonium chloride, copper 5g, cuprous chloride 5g, 2,2'-bipyridine (bpy) 16g, then temperature controlled at 60°C, reacted for 24 hour...

Embodiment 2

[0141] Synthesis of Cationic Functionalized Vinyl Chloride Polymer P2:

[0142] P2 synthetic process with reference to embodiment 1. The formula is shown in Table 1 and the process parameters are shown in Table 2.

[0143] 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; the molecular weight, molecular weight distribution and content of cationic functional monomer components in the polymer of P2 are shown in Table 4.

Embodiment 3

[0145] Synthesis of Cationic Functionalized Vinyl Chloride Polymer P3:

[0146] 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.

[0147] 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 cationic functional monomer components in the polymer of P3 are shown in Table 4.

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Abstract

The invention discloses a cationic functionalized vinyl chloride polymer and a preparation method thereof. The functionalized vinyl chloride polymer uses chlorine-containing monomers, graftable active monomers and hydrophilic functionalized monomers as comonomers, and is first polymerized into a main chain containing atom transfer radical polymerization in the aqueous phase dispersion system. The active precursor polymer of the active side group, and then use the active side group to initiate the cationic functionalized monomer on the solid-liquid interface to carry out the interface atom transfer radical polymerization, and polymerize to form a cationic functionalized vinyl chloride polymer containing cationic side chains . The cationic side chain contains quaternary ammonium salts and quaternary phosphonium salt groups, which have strong positive charge, so that the polymer has strong antibacterial properties, hydrophilic properties and anion exchange adsorption properties, and can be used alone for the preparation of Or blended with other resins to prepare highly hydrophilic antibacterial separation membrane products, battery separators, anion exchange adsorption materials and antibacterial coatings, which greatly broadens the application range of vinyl chloride polymers. Compared with existing materials, the hydrophilic Good, antibacterial, good application prospects.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a cationic 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 Patents(China)
IPC IPC(8): C08F259/04C08F259/06C08F226/02C08F220/34C08F230/02C08L51/00
Inventor 朱宝库王纳川姚之侃李彤方立峰崔月包永忠王俊朱利平
Owner ZHEJIANG UNIV