Polystyrene-b-Tb complex amphipathic segmented copolymer and honeycomb-structured porous film as well as preparation method

Abstract

The invention relates to a PS-b-Tb complex amphipathic segmented copolymer and a honeycomb-structured porous film constructed by the PS-b-Tb complex amphipathic segmented copolymer. The PS-b-Tb complex amphipathic segmented copolymer is prepared from the following raw materials in parts by weight: 100 parts of a component A, 50-100 parts of a component B, 0.8-1.2 parts of azodiisobutyronitrile and 150-250 parts of cyclohexanone, wherein the component A is composed of the following components in parts by weight: 100 parts of styrene, 0.5-1 part of S-1-dodecyl-S'-(alpha,alpha'-dimethyl-alpha'-acetic acid) trithiocarbonate (DDMAT), 0.15-0.2 part of azodiisobutyronitrile and 80-150 parts of cyclohexanone; the component B is composed of the following components in parts by weight: 100 parts of terbium nitrate, 100 parts of alpha- methacrylic acid, 175 parts of salicylic acid and 400-500 parts of ethanol; and the honeycomb-structured porous film is prepared from the following raw materials in parts by weight: 2-8 parts of the PS-b-Tb complex amphipathic segmented copolymer and 100 parts of chloroform. The porous film provided by the invention has the characteristics of simple preparation technology, good solubility, good orderliness, fluorescence characteristic and possibility of further modification of the tail end of the polymer.

Description

technical field

[0001] The invention belongs to the field of new materials, in particular to a polystyrene-b-Tb complex (PS-b-Tb complex) amphiphilic block copolymer honeycomb porous membrane and a preparation method. Background technique

[0002] In 1994, when the French scientist Francois and his collaborators dropped the carbon disulfide solution of polystyrene star polymer or block polymer on a solid substrate to prepare a film, they found that an ordered porous structure was formed on the surface of the polymer film. Since then, The water drop template method based on solvent volatilization has become an attractive method for preparing ordered microstructure materials. As a new type of structural material, the prepared honeycomb ordered membrane has the advantages of uniform pore size distribution and highly ordered pore arrangement. It has very important application prospects in the fields of microcontainers and microreactors, patterned templates, cell culture scaffold...

Examples

Embodiment 1

[0026] Example 1 A PS-b-Tb complex amphiphilic block copolymer is prepared from the following raw materials in parts by weight (0.05 g per part): 100 parts of A component, 100 parts of B component Parts, 1 part of azobisisobutyronitrile, 200 parts of cyclohexanone;

[0027] Among them, the weight fraction and proportion of component A are as follows (0.05 g per part): 100 parts of styrene, S-1-dodecyl-S'-(α,α'-dimethyl-α"- Acetic acid) trithiocarbonate (DDMAT) 0.7 parts, azobisisobutyronitrile 0.15 parts, cyclohexanone 100 parts; the weight fraction and proportion of component B are as follows (0.05 g per part): terbium nitrate (Tb (NO 3 ) 3 ) 100 parts, α-methacrylic acid 100 parts, salicylic acid 175 parts, ethanol 430 parts;

[0028] The preparation method of the PS-b-Tb complex amphiphilic block polymer is as follows: mix the styrene, DDMAT, azobisisobutyronitrile and cyclohexanone of the above-mentioned component A in proportion and stir evenly, o C reacted under nitr...

Embodiment 2

[0032] Example 2 A PS-b-Tb complex amphiphilic block copolymer is prepared from the following raw materials in parts by weight (0.05 g per part): 100 parts of A component, 50 parts of B component Parts, 0.8 parts of azobisisobutyronitrile, 150 parts of cyclohexanone;

[0033] Among them: the weight fraction and proportion of component A are as follows (take 0.05 g per part): 100 parts of styrene, S-1-dodecyl-S'-(α,α'-dimethyl-α″- Acetic acid) trithiocarbonate (DDMAT) 0.5 parts, azobisisobutyronitrile 0.15 parts, cyclohexanone 80 parts; the weight fraction and proportion of component B are as follows (0.05 g per part): terbium nitrate (Tb (NO 3 ) 3) 100 parts, α-methacrylic acid 100 parts, salicylic acid 175 parts, ethanol 400 parts.

[0034] The PS-b-Tb complex amphiphilic block polymer and its preparation method are as follows: mix the styrene, DDMAT, azobisisobutyronitrile and cyclohexanone of the above-mentioned component A in proportion and stir evenly, 80 o C reacted ...

Embodiment 3

[0038] Example 3 A PS-b-Tb complex amphiphilic block copolymer is prepared from the following raw materials in parts by weight (0.05 g per part): 100 parts of A component, 60 parts of B component Parts, 1.2 parts of azobisisobutyronitrile, 250 parts of cyclohexanone;

[0039] Among them, the weight fraction and proportion of component A are as follows (0.05 g per part): 100 parts of styrene, S-1-dodecyl-S'-(α,α'-dimethyl-α"- Acetic acid) 1 part of trithiocarbonate (DDMAT), 0.2 part of azobisisobutyronitrile, 150 parts of cyclohexanone; the weight fraction and proportion of component B are as follows (0.05 g per part): terbium nitrate (Tb (NO 3 ) 3 ) 100 parts, α-methacrylic acid 100 parts, salicylic acid 175 parts, ethanol 500 parts.

[0040] The preparation method of the PS-b-Tb complex amphiphilic block polymer is as follows: mix the styrene, DDMAT, azobisisobutyronitrile and cyclohexanone of the above-mentioned component A in proportion and stir evenly, o C reacted unde...

technical field

[0001] The invention belongs to the field of new materials, in particular to a polystyrene-b-Tb complex (PS-b-Tb complex) amphiphilic block copolymer honeycomb porous membrane and a preparation method. Background technique

[0002] In 1994, when the French scientist Francois and his collaborators dropped the carbon disulfide solution of polystyrene star polymer or block polymer on a solid substrate to prepare a film, they found that an ordered porous structure was formed on the surface of the polymer film. Since then, The water drop template method based on solvent volatilization has become an attractive method for preparing ordered microstructure materials. As a new type of structural material, the prepared honeycomb ordered membrane has the advantages of uniform pore size distribution and highly ordered pore arrangement. It has very important application prospects in the fields of microcontainers and microreactors, patterned templates, cell culture scaffold...

Examples

Embodiment 1

[0026] Example 1 A PS-b-Tb complex amphiphilic block copolymer is prepared from the following raw materials in parts by weight (0.05 g per part): 100 parts of A component, 100 parts of B component Parts, 1 part of azobisisobutyronitrile, 200 parts of cyclohexanone;

[0027] Among them, the weight fraction and proportion of component A are as follows (0.05 g per part): 100 parts of styrene, S-1-dodecyl-S'-(α,α'-dimethyl-α"- Acetic acid) trithiocarbonate (DDMAT) 0.7 parts, azobisisobutyronitrile 0.15 parts, cyclohexanone 100 parts; the weight fraction and proportion of component B are as follows (0.05 g per part): terbium nitrate (Tb (NO 3 ) 3 ) 100 parts, α-methacrylic acid 100 parts, salicylic acid 175 parts, ethanol 430 parts;

[0028] The preparation method of the PS-b-Tb complex amphiphilic block polymer is as follows: mix the styrene, DDMAT, azobisisobutyronitrile and cyclohexanone of the above-mentioned component A in proportion and stir evenly, o C reacted under nitr...

Embodiment 2

[0032] Example 2 A PS-b-Tb complex amphiphilic block copolymer is prepared from the following raw materials in parts by weight (0.05 g per part): 100 parts of A component, 50 parts of B component Parts, 0.8 parts of azobisisobutyronitrile, 150 parts of cyclohexanone;

[0033] Among them: the weight fraction and proportion of component A are as follows (take 0.05 g per part): 100 parts of styrene, S-1-dodecyl-S'-(α,α'-dimethyl-α″- Acetic acid) trithiocarbonate (DDMAT) 0.5 parts, azobisisobutyronitrile 0.15 parts, cyclohexanone 80 parts; the weight fraction and proportion of component B are as follows (0.05 g per part): terbium nitrate (Tb (NO 3 ) 3) 100 parts, α-methacrylic acid 100 parts, salicylic acid 175 parts, ethanol 400 parts.

[0034] The PS-b-Tb complex amphiphilic block polymer and its preparation method are as follows: mix the styrene, DDMAT, azobisisobutyronitrile and cyclohexanone of the above-mentioned component A in proportion and stir evenly, 80 o C reacted ...

Embodiment 3

[0038] Example 3 A PS-b-Tb complex amphiphilic block copolymer is prepared from the following raw materials in parts by weight (0.05 g per part): 100 parts of A component, 60 parts of B component Parts, 1.2 parts of azobisisobutyronitrile, 250 parts of cyclohexanone;

[0039] Among them, the weight fraction and proportion of component A are as follows (0.05 g per part): 100 parts of styrene, S-1-dodecyl-S'-(α,α'-dimethyl-α"- Acetic acid) 1 part of trithiocarbonate (DDMAT), 0.2 part of azobisisobutyronitrile, 150 parts of cyclohexanone; the weight fraction and proportion of component B are as follows (0.05 g per part): terbium nitrate (Tb (NO 3 ) 3 ) 100 parts, α-methacrylic acid 100 parts, salicylic acid 175 parts, ethanol 500 parts.

[0040] The preparation method of the PS-b-Tb complex amphiphilic block polymer is as follows: mix the styrene, DDMAT, azobisisobutyronitrile and cyclohexanone of the above-mentioned component A in proportion and stir evenly, o C reacted unde...

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