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

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Problems solved by technology

And the high graft rate of cross-linked polystyrene resin, the

Method used

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  • Method for graft modification for polystyrene resin by using ATRP

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] Add 1g1.82mmol / g chloroacetylated PS, 0.180g CuCl, 0.37mL pentamethyldiethylenetriamine, 6mL ethyl methacrylate and 8mL toluene into a reactor equipped with magnetic stirring, and place under nitrogen protection React at 100°C for 4h. The reaction yields 2.437 g of dry polystyrene-graft-polyethyl methacrylate, and the weight gain rate of resin graft is 142.5%. Using a mixed hydrolysis solution of 1,4-dioxane and water (3:1, V / V), hydrolyze polystyrene-graft-polyethyl methacrylate for 4 hours at 90°C to obtain 2.192g Affinity polystyrene resin.

Example Embodiment

[0022] Example 2

[0023] 1g 3.44mmol / g chloroacetylated PS-DVB crosslinked microspheres, 0.255g CuCl, 0.116g CuCl 2, 0.50mL of pentamethyldiethylenetriamine, 8mL of methyl methacrylate and 8mL of toluene were added to a reactor equipped with magnetic stirring, and placed under nitrogen protection at 85°C for 6h reaction. The reaction yielded 4.983 g of dry polystyrene-graft-polymethyl methacrylate, and the weight gain rate of resin grafting was 398.3%. Using a mixed hydrolysis solution of 1,4-dioxane and water (2:1, V / V) at 90°C, hydrolyze polystyrene-graft-polymethyl methacrylate for 4 hours to obtain 4.691g Affinity polystyrene resin.

Example Embodiment

[0024] Example 3

[0025] 1g 4.65mmol / 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 to a reactor equipped with magnetic stirring, and placed under nitrogen protection at 85°C for 10 hours. The reaction yielded 9.518 g of dry polystyrene-graft-polymethyl methacrylate, and the weight gain rate of resin grafting was 851.7 %. Using a mixed hydrolysis solution of 1,4-dioxane and water (2:1, V / V) at 90°C, hydrolyze polystyrene-graft-polymethyl methacrylate for 8 hours to obtain 8.493g 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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