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Spinning solution and its preparation and application

A technology of spinning dope and raw materials, which is applied in the field of preparation and application of spinning dope, which can solve the problems of difficult fiber formation and unreported issues, and achieve the effects of strong adsorption, good filterability and wide application of products

Inactive Publication Date: 2006-08-30
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the performance characteristics of this kind of material itself, it is mainly used as the processing of plastic products at present, and there are certain difficulties in the fiber forming of this kind of material. There are no reports about the preparation of PHBV ultrafine fibers at home and abroad so far.

Method used

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  • Spinning solution and its preparation and application
  • Spinning solution and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of PHBV spinning dope:

[0030] The solvent is ethylene dichloride, PHBV powder: ethylene dichloride = 1wt%: 99wt%; stirring at 35°C; standing at 30°C for 1.5hr for defoaming.

[0031] Application of PHBV spinning dope:

[0032] The spinning process uses hot air at 40°C as the medium; the receiving plate 4 is metal aluminum foil, the receiving distance is 20cm, and the diameter of the collected PHBV ultrafine fibers is between 100nm and 600nm.

Embodiment 2

[0034] Preparation of PHBV spinning dope:

[0035] The solvent is dichloromethane, PHBV powder:dichloromethane=8wt%:92wt%; stirring at 25°C; standing at 20°C for 2hr for defoaming.

[0036] Application of PHBV spinning dope:

[0037] The spinning process uses hot air at 30° C. as the medium; the receiving plate 4 is a plastic plate with a receiving distance of 35 cm, and the collected PHBV ultrafine fibers have a diameter of 200-800 nm.

Embodiment 3

[0039] Preparation of PHBV spinning dope:

[0040] The solvent is pyridine, PHBV powder: pyridine = 15wt%: 85wt%; stir at 70°C, and stand at 60°C for 2.5hr to defoam.

[0041] Application of PHBV spinning dope:

[0042] The spinning process uses hot air at 80° C. as the medium; the receiving plate 4 is paper, the receiving distance is 25 cm, and the diameter of the collected PHBV ultrafine fibers is between 200 and 1000 nm.

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Abstract

A spinning dope PHBV contains PHBV powder as raw material and the solvent chosen from dichloroethylene, dichloromethane, pyridine, and trichloromethane. It can be used to prepare superfine PHBV fibres through electrostatic spinning. The resultant superfine PHBV fibre features its high adsorptivity, filtering power, isolating performance, adhesion, biocompatibility, bioabsorptivity and biodegradability.

Description

technical field [0001] The invention relates to a spinning stock solution and its preparation and application, to be precise, relates to a PHBV spinning stock solution and its preparation and application, and belongs to the technical field of spinning stock solution preparation and application. Background technique [0002] Poly 3-hydroxybutyrate-3-hydroxyvalerate copolymer (PHBV) is a kind of biodegradable polyester obtained from bacteria biological cells through bacterial fermentation. Because it is directly extracted from organisms, it has good biocompatibility, bioabsorbability and biodegradability, which has aroused great interest in the polymer community. However, due to the performance characteristics of this kind of material itself, it is mainly used as the processing of plastic products at present, and there are certain difficulties in the fiber forming of this kind of material. The preparation of PHBV ultrafine fibers has not been reported a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D1/02D01D1/10D01D5/12D01D7/00
CPCD01F6/625
Inventor 陈彦模朱美芳张瑜宋丽媛陈龙俞昊
Owner DONGHUA UNIV