Antibacterial fiber as well as preparation method and application thereof

Abstract

The invention provides an antibacterial fiber and a preparation method and application thereof.The antibacterial fiber contains a graphene oxide composite material loaded with nanometer titania, and the preparation method comprises the steps that the graphene oxide composite material loaded with the nanometer titania and resin are mixed, blended, extruded and granulated to obtain fiber resin; the fiber resin is subjected to melt spinning, and the antibacterial fiber is obtained. The antibacterial fiber not only has excellent antibacterial performance, but also has excellent spinning performance, and can be widely applied to textiles and medical textiles.

Description

technical field

[0001] The invention relates to the technical field of functional fiber preparation, in particular to an antibacterial fiber and its preparation method and application. Background technique

[0002] Antibacterial fiber refers to a class of functional fibers that can kill or inhibit microorganisms, and is now widely used in home textiles (including underwear, sweatshirts, clothing for pregnant and infants, etc.) and medical textiles (surgical gowns, hospital gowns, bed sheets, curtains, and bandages, etc.). The fabric made of antibacterial fiber can resist the adhesion of bacteria on the fabric, reduce the number of bacteria on the fabric, and keep people away from the invasion of germs.

[0003] Except for a very small number of natural fibers (hemp fibers, chitin fibers, bamboo fibers), almost all antibacterial fibers play an antibacterial effect by adding antibacterial agents into the fiber material matrix. Compared with natural antibacterial fibers, arti...

Examples

preparation example Construction

[0052] Preparation of graphene oxide composite material A

[0053] 60mg of graphene oxide microchips were dispersed in 30ml of absolute ethanol, and supersonicated for 1h to make a suspension; under stirring, 0.42g of tetrabutyl titanate (the mass ratio of titanium in graphene oxide to tetrabutyl titanate) 1:1) slowly drop into the suspension, add 5ml of glycerol, stir evenly, move the mixed solution into a hydrothermal reaction kettle, put the reaction kettle into a blast drying oven at 180°C for 8 hours of heat preservation, After the reaction was over, the reactor was taken out and placed at room temperature to allow it to cool down naturally. After suction filtration, the obtained product was washed twice with ethanol, and then washed twice with deionized water, and the filter cake was placed in a freeze dryer at -50°C for 24 hours to obtain nanorod-shaped titanium dioxide / graphene oxide microsheet graphene oxide Composite material, wherein the average particle diameter o...

Embodiment 1

[0061] The present embodiment provides a kind of preparation method of antibacterial fiber, and described preparation method comprises:

[0062] After 998g PTT slices were dried under vacuum at 100°C for 12h to remove moisture, they were mixed with the graphene oxide composite material A of 2g nanorod-shaped titanium dioxide / graphene oxide microflakes (graphene oxide microflakes accounted for 0.2wt% of the total mass of the antibacterial fiber), and then Twin-screw extruder blends, extrudes, and granulates to make fiber resin slices containing nanorod-shaped titanium dioxide / graphene microflake graphene oxide composite materials; place the slices in an oven for 6 hours at 100°C for vacuum drying, and then melt Spinning to produce antibacterial fibers.

[0063] Among them, the heating temperature of the first zone to the ninth zone of the twin-screw extruder is respectively: the temperature of the first zone is 230°C, the temperature of the second zone is 230°C, the temperature...

Embodiment 2

[0066] This embodiment provides a preparation method of an antibacterial fiber. The preparation method is the same as that of Embodiment 1 except that the graphene oxide composite material A is replaced by the graphene oxide composite material B.

technical field

[0001] The invention relates to the technical field of functional fiber preparation, in particular to an antibacterial fiber and its preparation method and application. Background technique

[0002] Antibacterial fiber refers to a class of functional fibers that can kill or inhibit microorganisms, and is now widely used in home textiles (including underwear, sweatshirts, clothing for pregnant and infants, etc.) and medical textiles (surgical gowns, hospital gowns, bed sheets, curtains, and bandages, etc.). The fabric made of antibacterial fiber can resist the adhesion of bacteria on the fabric, reduce the number of bacteria on the fabric, and keep people away from the invasion of germs.

[0003] Except for a very small number of natural fibers (hemp fibers, chitin fibers, bamboo fibers), almost all antibacterial fibers play an antibacterial effect by adding antibacterial agents into the fiber material matrix. Compared with natural antibacterial fibers, arti...

Examples

preparation example Construction

[0052] Preparation of graphene oxide composite material A

[0053] 60mg of graphene oxide microchips were dispersed in 30ml of absolute ethanol, and supersonicated for 1h to make a suspension; under stirring, 0.42g of tetrabutyl titanate (the mass ratio of titanium in graphene oxide to tetrabutyl titanate) 1:1) slowly drop into the suspension, add 5ml of glycerol, stir evenly, move the mixed solution into a hydrothermal reaction kettle, put the reaction kettle into a blast drying oven at 180°C for 8 hours of heat preservation, After the reaction was over, the reactor was taken out and placed at room temperature to allow it to cool down naturally. After suction filtration, the obtained product was washed twice with ethanol, and then washed twice with deionized water, and the filter cake was placed in a freeze dryer at -50°C for 24 hours to obtain nanorod-shaped titanium dioxide / graphene oxide microsheet graphene oxide Composite material, wherein the average particle diameter o...

Embodiment 1

[0061] The present embodiment provides a kind of preparation method of antibacterial fiber, and described preparation method comprises:

[0062] After 998g PTT slices were dried under vacuum at 100°C for 12h to remove moisture, they were mixed with the graphene oxide composite material A of 2g nanorod-shaped titanium dioxide / graphene oxide microflakes (graphene oxide microflakes accounted for 0.2wt% of the total mass of the antibacterial fiber), and then Twin-screw extruder blends, extrudes, and granulates to make fiber resin slices containing nanorod-shaped titanium dioxide / graphene microflake graphene oxide composite materials; place the slices in an oven for 6 hours at 100°C for vacuum drying, and then melt Spinning to produce antibacterial fibers.

[0063] Among them, the heating temperature of the first zone to the ninth zone of the twin-screw extruder is respectively: the temperature of the first zone is 230°C, the temperature of the second zone is 230°C, the temperature...

Embodiment 2

[0066] This embodiment provides a preparation method of an antibacterial fiber. The preparation method is the same as that of Embodiment 1 except that the graphene oxide composite material A is replaced by the graphene oxide composite material B.

Images