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High-strength chitosan filament and interfacial photopolymerization preparation method and device thereof

A technology of chitosan and photopolymerization, which is applied in the fields of filament/thread forming, chemical instruments and methods, and complete sets of equipment for the production of artificial threads, etc., can solve the problems to be studied and the limited effect of improving the strength of chitosan filaments. , to achieve the effect of good uniformity and continuity, high strength, and improved mechanical properties

Active Publication Date: 2020-06-09
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no report on the use of polymer films formed by chitosan and acid chloride compounds for spinning, and a single interfacial polymerization has a limited effect on improving the strength of chitosan filaments. How to combine interfacial polymerization with other polymerization methods combination, and its application to the preparation of chitosan filaments remains to be studied

Method used

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  • High-strength chitosan filament and interfacial photopolymerization preparation method and device thereof
  • High-strength chitosan filament and interfacial photopolymerization preparation method and device thereof
  • High-strength chitosan filament and interfacial photopolymerization preparation method and device thereof

Examples

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preparation example Construction

[0036] The present invention also provides a method for preparing high-strength chitosan filament by interfacial photopolymerization. The method for preparing high-strength chitosan filament by interfacial photopolymerization is prepared by using the above-mentioned interfacial photopolymerization preparation device for high-strength chitosan filament. Including the following steps:

[0037] S1. Preparation of maleylated chitosan;

[0038] S2. The maleylated chitosan prepared in step S1 is used as the water-phase solute, and the maleylated chitosan is dissolved in deionized water according to a preset mass-volume ratio, and a predetermined amount of photoinitiator is added , Formulated into an aqueous phase solution and injected into the first reaction phase storage tank 1;

[0039] S3. Using a binary or polybasic acid chloride compound as the oil phase solute, prepare an oil phase solution of the oil phase solute and the organic solvent according to a preset mass-volume ratio, and ...

Embodiment 1

[0055] See figure 1 This embodiment provides a high-strength chitosan filament interfacial photopolymerization preparation device, which includes a spinning solution storage unit, a spinning unit, and a spinning collection unit; the spinning solution storage unit includes the first spinning solution storage unit from bottom to top. A reaction phase storage box 1 and a second reaction phase storage box 4; the spinning unit includes a film-forming orifice 2, a gathering hole 6, a twister 7, a transparent inclination tube 8 and a UV lamp 10, the UV lamp 10 It is arranged opposite to the transparent inclination tube 8; the spinning collection unit includes a guide wheel 9, a blow dryer 11, and a winding drum 12 in the horizontal direction; the film forming orifice 2 is arranged in the first reaction Between the phase storage tank 1 and the second reaction phase storage tank 4, the film-forming orifice plate 2 is provided with a plurality of film-forming holes 3 vertically penetrati...

Embodiment 2～8

[0071] Examples 2-8 respectively provide a high-strength chitosan filament interfacial photopolymerization preparation device. Compared with Example 1, the difference lies in that the thickness of the film-forming orifice 2 and the diameter or the diameter of the film-forming hole 3 are changed. The number of film holes 3, other structures and parameters are the same as those in Embodiment 1, and will not be repeated here. The corresponding parameters of the film-forming orifice 2 and the film-forming hole 3 corresponding to each embodiment are shown in Table 2.

[0072] Table 2 Corresponding parameters of film-forming orifice plates and film-forming holes in Examples 2-8

[0073]

[0074] According to the same preparation method as in Example 1, the high-strength chitosan filaments were prepared by using the interfacial photopolymerization preparation device of high-strength chitosan filaments provided in Examples 2-8. The performance of the sugar filament was tested, and the res...

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Abstract

The invention discloses a high-strength chitosan filament and an interfacial photopolymerization preparation method and device thereof. The device comprises a spinning solution storage unit, a spinning unit and a spinning collecting unit; the spinning solution storage unit comprises a first reaction phase storage box and a second reaction phase storage box; and the spinning unit comprises a film forming pore plate, a gathering hole, a twister, a transparent dip angle guide pipe and a UV lamp. Based on the device, a polymer film is prepared by utilizing interfacial polymerization reaction through preparing maleated chitosan and preparing a water-phase solution taking the maleated chitosan as a water-phase solute and an oil-phase solution taking an acyl chloride compound as an oil-phase solute, and the polymer film is subjected to drawing, twisting and photopolymerizing to prepare the high-strength chitosan filament. By means of the mode, interfacial polymerization and photopolymerization can be jointly applied to chitosan spinning, spinning and twisting are integrated in one step, the strength of chitosan filaments is effectively improved, and the chitosan filaments have good uniformity and continuity.

Description

Technical field [0001] The invention relates to the technical field of chitosan spinning, in particular to a high-strength chitosan filament and a preparation method and device for interface photopolymerization thereof. Background technique [0002] Chitosan is not only a biodegradable natural polymer with excellent biocompatibility, antibacterial ability and hemostatic ability, but also a good spinning raw material. Its good fiber-forming properties make chitosan in It has unique advantages in preparing medical gauze, bandage and antibacterial clothing. Currently, the devices for spinning chitosan filaments mainly include electrospinning devices and wet spinning devices. These two types of devices are often used for spinning in laboratories, and there are problems of irregular and discontinuous filament formation. Obtain uniform and continuous chitosan filaments. Therefore, there is still a need to develop a spinning device with simple structure and large-scale production to s...

Claims

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Application Information

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IPC IPC(8): D01D13/00D01D5/42B01J19/12D01F9/00C08B37/08
CPCB01J19/123C08B37/003D01D5/423D01D13/00D01F9/00
Inventor 周应山李尚志万婷婷刘欣杨红军顾绍金徐卫林
Owner WUHAN TEXTILE UNIV
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