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Process for the production of poly(cyanoacrylate) fibres

A technology of cyanoacrylate and micro-fibers, which is applied in the direction of fiber treatment, fiber chemical characteristics, and devices for coating liquid on the surface, etc. It can solve the problems of lack of process control and difficulties, and achieve the promotion of cell growth and good biocompatibility The effect of the characteristic

Active Publication Date: 2015-12-30
FOND INST ITAL DI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main disadvantages of these methods relate to the difficulty of scale-up and the lack of process control during the moisture-activated polymerization, which leads to cross-linked polymer structures in the form of hard white solids.

Method used

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  • Process for the production of poly(cyanoacrylate) fibres
  • Process for the production of poly(cyanoacrylate) fibres
  • Process for the production of poly(cyanoacrylate) fibres

Examples

Experimental program
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Effect test

Embodiment

[0042]Following the mixing procedure described above, a poly(cyanoacrylate) gel was prepared using ethyl 2-cyanoacrylate and dimethyl sulfoxide mixed in a 1:1 volume ratio.

[0043] Acetone and acetonitrile solutions of poly(cyanoacrylate) were prepared using concentrations from 2% to 20% w / v. Each solution was collected in a 1-mL syringe equipped with a 0.5 mm inner diameter stainless steel needle as a spinneret and connected to a high voltage generator.

[0044] Connect the syringe to a syringe pump for maintaining a flow rate of 3-5 ml / h depending on the viscosity of the solution. A foil-covered copper pan was used as a collector. The applied voltage and the distance from the tip to the collector were 10-15 kV and 15 cm, respectively.

[0045] The size of the fibers produced can be varied by varying the polymer solution concentration: increasing solution concentration greatly increases the solution viscosity, allowing larger diameter fibers to be produced.

[0046] The f...

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Abstract

Process for the production of poly(cyanoacrylate) micro- or nanofibres, comprising the operations of: - mixing the cyanoacrylate monomer with a dipolar aprotic solvent to form a poly(cyanoacrylate) gel; - dissolving the gel in a solvent for acrylates, able to form a solution suitable for electro spinning; and - submitting the solution obtained to electro spinning to form said micro- or nanofibres; the micro- or nanofibres thus obtained can be used for forming coatings that adhere to a substrate as a result of thermal treatment with fusion.

Description

technical field [0001] The present invention relates to methods for producing microfibers and nanofibers of poly(cyanoacrylate), continuous uniform coatings obtained from said fibers, and substrates or articles provided with said coatings. Background technique [0002] The production of polymeric nanofibers, characterized by their high surface area / volume ratio and their mechanical properties, is used in various applications such as reinforced composites, as tissue scaffolds, filter media and The production of materials for controlled drug delivery is of considerable importance. [0003] The main techniques used to produce polymer nanofibers include the process of extruding a polymer melt in a template through nano-sized pores and an electrospinning process. Electrospinning involves the use of a high voltage source for generating charged polymer jets that are collected on a substrate as a mat of nanofibers. The technology requires polymers that can be processed in a liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/32D01D5/00D01F6/16
CPCC08F222/322D01D5/0084D01F6/16D01F6/18B05D3/002C09D133/14D01D5/003
Inventor 伊尔凯尔·S·巴耶尔伊利莎·梅莱罗伯托·辛戈拉尼阿萨纳夏·阿萨纳修
Owner FOND INST ITAL DI TECH
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