Preparation method and application of polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin

A polydivinyl benzene, suspended double bond technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem of weak adsorption capacity of polar organic compounds, and achieve obvious selective adsorption , low cost, broad application prospects

Inactive Publication Date: 2014-07-09
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Most of the post-crosslinked adsorption resins in the prior art are non-polar bodies, have strong hydrophobicity, weak adsorption capacity for polar organic compounds, and limited applications. The purpose of the present invention is to provide a Simple, low-cost method for preparing a high specific surface area, a special pore structure, and capable of selectively adsorbing polar organic compounds with polar groups modifying pendant double bonds and then cross-linking polydivinyl styrene resin, which meets the requirements of industrial production

Method used

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  • Preparation method and application of polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin
  • Preparation method and application of polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin
  • Preparation method and application of polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin

Examples

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Embodiment 1

[0034] Preparation of glycidyl methacrylate and divinylbenzene copolymer (PDVB / GMA): add 200mL of 1% PVA aqueous solution to a 500mL three-necked flask equipped with a reflux condenser, a thermometer and a mechanical stirrer, raise the temperature to 45°C, and Add 19g DVB, 1g polar monomer GMA, toluene (mass is 160% of total monomer mass), n-heptane (mass is 40% of total monomer mass) and benzoyl peroxide (mass is mono 1.0% of the total body mass) of the mixed oil phase, adjust the stirring speed to 100r / min, and control the size of the oil droplets. Slowly raise the temperature to 75°C for 2 hours of polymerization; then raise the temperature to 85°C for 3 hours of polymerization; continue to raise the temperature to 95°C and boil the balls for 3 hours. The product was poured out, washed with hot water and cold water respectively, and extracted with petroleum ether for 24 hours to remove the porogen, and dried to obtain the precursor resin PDVB / GMA. The measured average pore...

Embodiment 2

[0038] Preparation of triallyl isocyanurate and divinylbenzene copolymer (PDVB / TAIC): add 200mL of 0.8% PVA aqueous solution to a 500mL three-necked flask equipped with a reflux condenser, a thermometer and a mechanical stirrer, and raise the temperature to 45 ℃, under stirring, add 19g DVB, 1g polar monomer TAIC, toluene (mass is 200% of the total monomer mass), n-heptane (mass is 50% of the total monomer mass) and azoisobutyronitrile ( The mass is 0.5% of the total mass of the monomer) mixed oil phase, and the stirring speed is adjusted to 120r / min to control the size of the oil droplets. Slowly raise the temperature to 70°C for 3 hours; then raise the temperature to 87°C for 4 hours; continue to raise the temperature to 90°C for 3 hours. The product was poured out, washed with hot water and cold water respectively, and extracted with petroleum ether for 24 hours to remove the porogen, and dried to obtain the precursor resin PDVB / TAIC. The measured average pore diameter of ...

Embodiment 3

[0043] Preparation of methyl acrylate and divinylbenzene copolymer (PDVB / MA): add 200mL of 1.2% PVA aqueous solution to a 500mL three-necked flask equipped with a reflux condenser, a thermometer and a mechanical stirrer, raise the temperature to 45°C, and stir Add 19g DVB, 1g polar monomer MA, toluene (the mass is 150% of the total mass of the monomer), n-heptane (the mass is 50% of the total mass of the monomer) and benzoyl peroxide (the mass is 150% of the total mass of the monomer) 0.5% of the total mass) of the mixed oil phase, adjust the stirring speed to 125r / min, and control the size of the oil droplets. Slowly raise the temperature to 68°C for 3 hours of polymerization; then raise the temperature to 83°C for 5 hours of polymerization; continue to raise the temperature to 95°C and boil the balls for 3 hours. The product was poured out, washed with hot water and cold water respectively, and extracted with petroleum ether for 24 hours to remove the porogen, and dried to o...

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Abstract

The invention discloses a preparation method and an application of polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin. The preparation method comprises: firstly performing a polymerization reaction of divinylbenzene monomers, polar monomers, and a pore forming agent to obtain a polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin precursor; performing further crosslinking through a Friedel-Crafts reaction to obtain the polar group-modified pendent double bond post-crosslinked polydivinylbenzene resin. The preparation method is simple, and low in cost, and the prepared post-crosslinked resin has a high specific surface area and a special pore structure; the post-crosslinked resin can be used for adsorbing and removing organic matter in waste water, has the effect of selective adsorption, and especially has obvious selective adsorption effect on Congo red and/or rhodamine B.

Description

technical field [0001] The invention relates to a preparation method and application of a polar group-modified pendant double bond and then cross-linked polydivinylbenzene resin, which belongs to the field of polymer modification. Background technique [0002] The post-crosslinking method of pendant double bonds was first proposed by Ando. In recent years, Yan Jun’s research group in China has used polystyrene-divinylbenzene copolymers to carry out post-crosslinking reactions of pendant double bonds. However, since the precursors of post-crosslinked resins are all non-polar, the prepared post-crosslinked resins have Extremely hydrophobic, not conducive to industrial use, and has limited adsorption capacity for organic compounds with certain polarity. For this reason, it is particularly important to modify the polarity of the crosslinked resin after pendant double bonds to improve the adsorption capacity of the resin for polar adsorbates. [0003] At present, there are very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/36C08F220/32C08F226/06C08F220/14C08F218/08C08J9/28C08J3/24B01J20/26B01J20/30C02F1/28
Inventor 查宏伟杨丽李河冰王小梅陈立妙刘又年黄健涵
Owner CENT SOUTH UNIV
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