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Method for preparing polar modified ultra-high crosslinking type interpenetrating polymer network and application thereof

A technology of ultra-high cross-linking and polymer, which is applied in the direction of alkali metal compounds, chemical instruments and methods, and other chemical processes. It can solve the problems of unsatisfactory adsorption effect, achieve good repeated use effect, increase adsorption capacity, and low cost Effect

Inactive Publication Date: 2015-09-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defect that the modified cross-linked polystyrene in the prior art has an unsatisfactory adsorption effect on polar organic compounds (such as: weakly polar phenol, highly polar salicylic acid) in water, its application is limited. The purpose of the present invention is to provide a method for preparing high specific surface area and large pore volume, and has suitable pore size and polar pore structure, which is especially suitable for the polarity of polar small molecule aromatic organic compounds such as phenol and salicylic acid in adsorption water. A method for modifying an ultra-highly cross-linked interpenetrating polymer network, the method is simple to operate, low in cost, and meets industrial production requirements

Method used

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  • Method for preparing polar modified ultra-high crosslinking type interpenetrating polymer network and application thereof
  • Method for preparing polar modified ultra-high crosslinking type interpenetrating polymer network and application thereof
  • Method for preparing polar modified ultra-high crosslinking type interpenetrating polymer network and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Synthesis of chloromethylated polystyrene / polymethyl acrylate interpenetrating network (CMPS / PMA IPNs):

[0044] 20g chloromethylated polystyrene, 18g methyl acrylate (MA), 2g triallyl isocyanurate (TAIC), 40g butyl acetate, 10g n-heptane (0.5 g of the total mass of MA and TAIC) times) and 0.2 g of azobisisobutyronitrile (AIBN) were mixed uniformly, added to a 500 mL three-necked round bottom flask, and swelled overnight. Suction filtration, drain the excess liquid that is not swollen into the pores of chloromethylated polystyrene, and add it to a mixed solution of 190 mL of water and 10 mL of 1% PVA at 45 °C, and adjust the appropriate stirring speed. The temperature was gradually raised to 67°C for 2 hours; the temperature was continued to rise to 75°C for 2 hours; the temperature was raised to 85°C for 2 hours; the temperature was finally raised to 95°C and the reaction was performed for 4 hours. The product was washed with hot water and cold water, placed in a ...

Embodiment 2

[0054] (1) Synthesis of chloromethylated polystyrene / polymethyl acrylate interpenetrating network (CMPS / PMA IPNs)

[0055] 20g chloromethylated polystyrene, 16g methyl acrylate (MA), 4g triallyl isocyanurate (TAIC), 25g butyl acetate, 25g n-heptane, 0.4g benzoyl peroxide (BPO) mixed evenly, added to a 500 mL three-necked round-bottomed flask, and swollen overnight. Suction filtration, drain the excess liquid that is not swollen into the chloromethylated polystyrene pores, add it to 190 mL of water and 10 mL of a 1% PVA mixed solution at 40°C, and adjust the appropriate stirring speed; The temperature was gradually raised to 65°C for 2 hours; the temperature was continued to rise to 75°C for 4 hours; the temperature was raised to 85°C for 4 hours; the temperature was finally raised to 95°C and the reaction was performed for 2 hours. The product was washed with hot water and cold water, placed in a Soxhlet extractor for extraction with petroleum ether for 24h, and dried to obta...

Embodiment 3

[0064] (1) Synthesis of chloromethylated polystyrene / polyethyl acrylate interpenetrating networks (CMPS / PEA IPNs)

[0065] 20g chloromethylated polystyrene, 8.5g ethyl acrylate (EA), 1.5g triallyl isocyanurate (TAIC), 45g butyl acetate, 45g n-heptane, 0.4g azobis Isobutyronitrile (AIBN) was mixed uniformly, added to a 500 mL three-necked round bottom flask, and swelled overnight. Suction filtration, drain the excess liquid that is not swollen into the pores of the chloromethylated polystyrene, add it to 190 mL of water and 10 mL of a 1% PVA mixed solution at 45°C, and adjust the appropriate stirring speed; The temperature was gradually raised to 65°C for 2 hours; the temperature was continued to rise to 75°C for 2 hours; the temperature was raised to 85°C for 4 hours; the temperature was finally raised to 95°C and the reaction was performed for 4 hours. The product was washed with hot water and cold water, placed in a Soxhlet extractor for extraction with petroleum ether for ...

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Abstract

The invention discloses a method for preparing a polar modified ultra-high crosslinking type interpenetrating polymer network and an application thereof. The method for preparing the polar modified ultra-high crosslinking type interpenetrating polymer network comprises the steps that chloromethylated polystyrene serves as the raw material, crosslinking is conducted by penetrating polyacrylate in the chloromethylated polystyrene by means of suspension polymerization and conducting a Fridedl-Crafts reaction in sequence, polar modification is conducted through an animation reagent, the polar modified ultra-high crosslinking type interpenetrating polymer network with a high specific surface area, a larger pore volume and proper sizes of pore diameter and polarity is obtained, the interpenetrating polymer network can be used for absorbing small polar molecule aromatic organic compounds in water and specially have the selective adsorption effect for phenol and / or salicylic acid, and the application prospect of the polar modified ultra-high crosslinking type interpenetrating polymer network is wide; in addition, the operation of the method for preparing the polar modified ultra-high crosslinking type interpenetrating polymer network is easy, the cost is low, and the industrial production can be achieved.

Description

technical field [0001] The invention relates to a method for preparing a polar modified ultra-high cross-linked interpenetrating polymer network and its application, and belongs to the field of polymer modification. Background technique [0002] Interpenetrating polymer networks (IPNs) are a type of polymer network formed by two or more cross-linked polymers through the interpenetration and entanglement of polymer chains. Due to the interpenetration between the two nets in IPNs, the degree of phase separation of the two entangled polymers is reduced, and they have forced compatibility, so they have unique morphologies such as biphasic continuity, cell-like structure and interfacial interpenetration. The peculiar morphologies make the properties of IPNs materials have a significant synergistic effect. [0003] The blending of hydrophobic polymers and hydrophilic polymers can be achieved through IPNs technology, and the entanglement of molecular chains between hydrophobic pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F226/06C08J3/24C08L33/10C08L25/04C08F8/32C08J9/14B01J20/26B01J20/28B01J20/30C02F1/28C02F1/58
Inventor 黄健涵伏振宇韩珊李河冰闫冲刘又年
Owner CENT SOUTH UNIV
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