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Method for graft modification for polystyrene resin by using ATRP

A technology for polystyrene modification, which is applied in the field of graft modification of polystyrene resin using ATRP, which can solve the problems of high grafting rate and achieve the effect of high loading capacity, simple reaction steps and easy operation

Inactive Publication Date: 2009-08-19
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the high graft rate of cross-linked polystyrene resin, the technology of high monomer conversion rate has not been reported

Method used

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  • Method for graft modification for polystyrene resin by using ATRP

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 1g of 1.82mmol / g chloroacetylated PS, 0.180g of CuCl, 0.37mL of pentamethyldiethylenetriamine, 6mL of ethyl methacrylate and 8mL of toluene into a reactor equipped with magnetic stirring, and place under nitrogen protection Reaction at 100°C for 4h. The reaction yielded 2.437 g of dry polystyrene-graft-polyethyl methacrylate, and the resin graft weight gain rate was 142.5%. Using a mixed hydrolyzate of 1,4-dioxane and water (3:1, V / V), hydrolyze polystyrene-grafted-polyethylmethacrylate for 4 hours at 90°C to obtain 2.192 g of two Affinity polystyrene resin.

Embodiment 2

[0023] 1g3.44mmol / g chloroacetylated PS-DVB cross-linked microspheres, 0.255g CuCl, 0.116g CuCl 2, 0.50mL of pentamethyldiethylenetriamine, 8mL of methyl methacrylate and 8mL of toluene were added into a reactor equipped with magnetic stirring, and placed under nitrogen protection at 85°C for 6h. The reaction yielded 4.983g of dry polystyrene-graft-polymethyl methacrylate, and the resin graft weight gain rate was 398.3%. Use the mixed hydrolyzate of 1,4-dioxane and water (2:1, V / V) to hydrolyze polystyrene-graft-polymethyl methacrylate for 4 hours at 90°C to obtain 4.691 g of two Affinity polystyrene resin.

Embodiment 3

[0025] 1g4.65mmol / g bromoacetylated PS-DVB cross-linked microspheres, 0.354g CuCl, 0.161g CuCl 2 , 0.70mL of tetramethylethylenediamine, 12mL of methyl methacrylate and 10mL of toluene were added into a reactor equipped with magnetic stirring, and placed under nitrogen protection at 85°C for 10h. The reaction yielded 9.518g of dry polystyrene-graft-polymethyl methacrylate, and the resin graft weight gain rate was 851.7%. Use the mixed hydrolyzate of 1,4-dioxane and water (2:1, V / V) to hydrolyze polystyrene-graft-polymethyl methacrylate for 8 hours at 90°C to obtain 8.493 g of two Affinity polystyrene resin.

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Abstract

The invention relates to a preparation method of high-load amphiphilic polystyrene resin. The preparation method is characterized by initiating sites with high-load alpha-methylacetyl halide or acetyl halide introduced on cross-linked polystyrene resin benzene ring, grafting polymer chain of methacrylate or acrylic ester to polystyrene, and obtaining the polystyrene-graft-polymethacrylate or polyacrylate so as to obtain the polystyrene polymeric adsorbent with new (surface) property.

Description

technical field [0001] The present invention relates to a modification method of polystyrene resin, specifically a modification method of polystyrene resin using atom transfer radical polymerization (ATRP) technology, which is characterized in that: The α-methylhaloacetyl or haloacetyl initiated sites introduced on the ring graft the polymer chain of methacrylate or acrylate to polystyrene to obtain polystyrene-grafted-polymethacrylic acid Method for obtaining polystyrene adsorbent resins with new (surface) properties by using esters or polyacrylates. Background technique [0002] By grafting functional modification on linear or cross-linked polystyrene resin, it can be endowed with new performance and expand its application range. [0003] The methods for obtaining polystyrene graft copolymers mainly include: (1) dissolving the main chain polymer in the graft monomer, and using a free radical initiator to initiate grafting. Such as US4366293, US4413038 with t-butylperbenz...

Claims

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Application Information

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IPC IPC(8): C08F257/02
Inventor 刘晓宁魏荣卿张永峰
Owner NANJING UNIV OF TECH
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