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Preparation method of cyclodextrin functionalized long-chain hyperbranched polystyrene porous membrane

A polystyrene and cyclodextrin technology, which is applied in the field of preparation of long-chain hyperbranched polystyrene porous membranes, can solve the problems of low degree of membrane functionalization, complex processing technology, and poor controllability of molecular structure.

Inactive Publication Date: 2016-08-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to avoid the deficiencies of the prior art, the present invention proposes a method for preparing a cyclodextrin-functionalized long-chain hyperbranched polystyrene porous membrane, which overcomes the complex processing technology and the disadvantages of the existing polymer porous membrane preparation technology. Insufficiencies such as low degree of functionalization and poor controllability of molecular structure

Method used

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  • Preparation method of cyclodextrin functionalized long-chain hyperbranched polystyrene porous membrane
  • Preparation method of cyclodextrin functionalized long-chain hyperbranched polystyrene porous membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Add propynyl alcohol (2.9g, 52mmol), 2-bromosuccinic acid (1028mg, 5.2mmol) and p-toluenesulfonic acid (50mg) successively in dry one-necked flask, and add 10ml toluene as solvent, then in 60 The reaction was carried out under the condition of ℃ for 36h. After the reaction was over, toluene was distilled off under reduced pressure and dissolved in dichloromethane, then washed four times with NaOH solution and three times with distilled water to obtain a yellow liquid, adding anhydrous MgSO 4 Dry and stir for 1h to 2h, and finally remove dichloromethane by vacuum distillation to obtain a yellow viscous liquid, which is 2-bromosuccinic acid dipropynyl alcohol ester.

[0044] Styrene (2080 mg, 10 mmol), dipropynyl 2-bromosuccinate (54.6 mg, 0.2 mmol), bipyridine (93.6 mg, 0.6 mmol) and cuprous bromide ( 28.9mg, 0.2mmol), after completely dissolving, use Schlenk technology to remove the dissolved oxygen in the reaction flask, then react at 110°C under sealed conditions unt...

Embodiment 2

[0051] Add propynyl alcohol (5.8g, 104mmol), 2-bromosuccinic acid (2056mg, 10.4mmol) and p-toluenesulfonic acid (100mg) successively in dry one-necked flask, and add 20ml toluene as solvent, then in 60 The reaction was carried out under the condition of ℃ for 36h. After the reaction was over, toluene was distilled off under reduced pressure and dissolved in dichloromethane, then washed four times with NaOH solution and three times with distilled water to obtain a yellow liquid, adding anhydrous MgSO 4 Dry and stir for 1h to 2h, and finally remove dichloromethane by vacuum distillation to obtain a yellow viscous liquid, which is 2-bromosuccinic acid dipropynyl alcohol ester.

[0052] In a dry Schlenk tube were added styrene (4160 mg, 20 mmol), dipropynyl 2-bromosuccinate (109.2 mg, 0.4 mmol), bipyridine (187.2 mg, 1.2 mmol) and cuprous bromide ( 57.8mg, 0.4mmol), after completely dissolving, use Schlenk technology to remove the dissolved oxygen in the reaction bottle, then rea...

Embodiment 3

[0059] Add propynyl alcohol (8.7g, 156mmol), 2-bromosuccinic acid (3084mg, 15.6mmol) and p-toluenesulfonic acid (150mg) successively in dry one-necked flask, and add 30ml toluene as solvent, then in 60 The reaction was carried out under the condition of ℃ for 36h. After the reaction was over, toluene was distilled off under reduced pressure and dissolved in dichloromethane, then washed four times with NaOH solution and three times with distilled water to obtain a yellow liquid, adding anhydrous MgSO 4 Dry and stir for 1h to 2h, and finally remove dichloromethane by vacuum distillation to obtain a yellow viscous liquid, which is 2-bromosuccinic acid dipropynyl alcohol ester.

[0060] In a dry Schlenk tube were added styrene (6240 mg, 30 mmol), dipropynyl 2-bromosuccinate (163.8 mg, 0.6 mmol), bipyridine (280.8 mg, 1.8 mmol) and cuprous bromide ( 86.7mg, 0.6mmol), after completely dissolving, use Schlenk technology to remove the dissolved oxygen in the reaction flask, then reac...

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Abstract

The invention relates to a preparation method of a cyclodextrin-functionalized long-chain hyperbranched polystyrene porous film, which combines a dynamic breathing pattern method and a spin-coating method to prepare a long-chain hyperbranched polystyrene film based on cyclodextrin functionalization. Styrene porous membrane. Among them, the hydrophobic long-chain hyperbranched polystyrene forms the matrix of the porous membrane, while the hydrophilic β-cyclodextrin forms the pore wall of the porous membrane. The beneficial effect is that the cyclodextrin functionalized long-chain hyperbranched polystyrene polymer porous membrane is prepared by adopting the phase inversion method combined with the spin coating method. First of all, long-chain hyperbranched polystyrene with narrow molecular weight distribution and controllable molecular weight was prepared by combining ATRP and click chemistry, which provides a prerequisite for subsequent regulation of the structural parameters of porous membranes. Secondly, the existence of a large number of β-cyclodextrin units at the outer end of hyperbranched polystyrene provides inclusion and recognition functions for the porous membrane. This polymer porous membrane is expected to have a wide range of applications in drug delivery, adsorption of dye molecules, and as antifouling materials.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a preparation method of a cyclodextrin-functionalized long-chain hyperbranched polystyrene porous membrane. Background technique [0002] Polymer porous membrane is a kind of ordered microphase structure material. This type of membrane contains a large number of hole arrays. It has important application potential in the growth of one-dimensional micro-nano structure, anti-fouling materials, water purification and selective separation. . Hyperbranched polymers are unique in the preparation of porous membranes by virtue of their special spherical molecular structure, multifunctional end groups, and easily modified structural properties, especially the control of hyperbranched polymers through end group modification. The morphological structure of the porous membrane is an effective method; at the same time, the hyperbranched molecular structure can also enhance the performance of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08J5/18C08L87/00C08L5/16C08G81/02C08B37/16C08F112/08C08F8/30
Inventor 田威石凌霄党静
Owner NORTHWESTERN POLYTECHNICAL UNIV
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