A Preparation Method of Polypyrrole/Nylon Fiber Composite Based on Molecular Assembly
A composite material, nylon fiber technology, applied in fiber processing, spinning solution preparation, conjugated synthetic polymer rayon, etc., can solve the problems of insoluble, thick fiber, difficult polypyridine throat, etc.
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[0029] The first aspect of the present invention relates to a kind of preparation method based on the polypyrrone / nylon fiber composite material of molecular assembly, it comprises the following steps:
[0030] (1) Configure a mixed solution for electrospinning, the mixed solution includes the following components in weight percentage: 5-20% of tetramine and tetra-acid, wherein the ratio of tetraamine to tetra-acid is 1.0-2.0:1.0 ~3.0; polyamide copolymer 5~20%, solvent 60%~90%;
[0031] (2) Electrospinning the mixed solution obtained in (1) to obtain precursor nanofibers;
[0032] (3) heat-treating the precursor nanofibers obtained in (2) to make a polypyrrole / nylon fiber composite material.
[0033] The term "polypyrrole" used in the present invention is a polymer formed by the polymerization of tetraamine and tetraacid, and is a ladder (BBL) or semi-ladder polymer formed by linking aromatic rings or naphthalene rings with imidazole and pyrrole rings. (BBB).
[0034] In t...
Embodiment 1
[0103] Get 3,3',4,4'-biphenyltetramine and 3,3',4,4'-bistrifluoromethyl diphenyltetracarboxylic acid, their substance ratio is 1:1, dissolve in In N,N-dimethylacetamide solvent, under the condition that the temperature is lower than 25° C., magnetically stir for 2 h. Add the polyamide copolymer into the mixed solution and stir for 4 hours to make it evenly mixed. The mass percentage of tetramine and tetramine in the total solution is controlled to be 12%, the mass percentage of polyamide copolymer is 12%, and the mass percentage of solvent is 76%.
[0104] Among them, R1 and R2 in the polyamide copolymer are p-(1,1-bistrifluoromethyl-benzyl)-phenyl, R3 is the residue of diamine A, and R4 is chain of phenyl groups.
[0105] The mixed solution prepared above was subjected to electrospinning, the spinning voltage was controlled at 10-30KV, and the distance from the needle tip to the receiving device was 25cm. Random nanofiber films are collected by a slow-rotating drum, and fi...
Embodiment 2
[0118] Get 3,3',4,4'-tetraaminodiphenyl sulfide and 3,3',4,4'-bistrifluoromethyl diphenyltetracarboxylic acid, the ratio of their substances is 1:1 , dissolved in N,N-dimethylacetamide solvent, and stirred magnetically for 2 hours under the condition that the temperature is lower than 25°C. Add the polyamide copolymer into the mixed solution and stir for 4 hours to make it evenly mixed. The mass percentage of tetramine and tetraamine in the total solution is controlled to be 7%, the mass percentage of polyamide copolymer is 20%, and the mass percentage of solvent is 73%.
[0119] Among them, R1 and R2 in the polyamide copolymer are p-(1,1-bistrifluoromethyl-benzyl)-phenyl, R3 is the residue of diamine A, and R4 is chain of phenyl groups.
[0120] Electrospinning and heat treatment were carried out in the same manner as in Example 1 to obtain a polypyrrole / nylon fiber composite.
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