Antibacterial polypropylene melt-blown material as well as preparation method and application thereof

An antibacterial polypropylene and polypropylene meltblown technology, applied in the field of textile materials, can solve problems such as side reactions and polymer molecular weight reduction, and achieve the effect of durable antibacterial function and renewable antibacterial function

Active Publication Date: 2020-11-17
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that suitable free radical initiators for graft polymerization are mainly peroxide compounds
However, side reactions may occur in the polymer groups, which will lead to a severe reduction in the molecular weight of the polymer

Method used

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  • Antibacterial polypropylene melt-blown material as well as preparation method and application thereof
  • Antibacterial polypropylene melt-blown material as well as preparation method and application thereof
  • Antibacterial polypropylene melt-blown material as well as preparation method and application thereof

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preparation example Construction

[0031] The invention provides a kind of preparation method of antibacterial polypropylene melt-blown material, comprises the following steps:

[0032] S1. According to the predetermined ratio, dry mix the polypropylene masterbatch, 1-vinylimidazole and peroxide initiator for 2 to 10 minutes to obtain the mixture; then quickly introduce the mixture into the preheating chamber within the predetermined time, under nitrogen Under a protective atmosphere, carry out a modification reaction of polypropylene to obtain a modified product;

[0033] S2, freezing the modified product prepared in step S1 in an ice-water bath, and preparing the frozen modified product into modified particles with a particle size of less than 5 mm;

[0034] S3, dissolving the modified particles prepared in step S2 in boiling toluene according to a predetermined ratio to obtain a mixed hot solution, and performing a thermal reaction for 20 to 40 minutes;

[0035] S4, drop the mixed hot solution after the rea...

Embodiment 1

[0050] Embodiment 1 of the present invention provides a kind of preparation method of antibacterial polypropylene melt-blown material, comprises the following steps:

[0051] S1, the polypropylene masterbatch, 1-vinylimidazole with a concentration of 400mpm and the peroxide initiator 2,5-dimethyl-2,5-di-tert-butylperoxy-3-hexyl with a concentration of 10mpm Alkyne (DTBHY) was dry-mixed for 5 min to obtain a mixture with a total mass of 40 g; then the mixture was quickly introduced into the preheating chamber within 0.5 min, and heated at 200 ° C on a Brabender Plasti-Corder ATR (Brabender plasticizer). The polypropylene modification reaction was carried out at 50 rpm for 5 min, and nitrogen was blown over the mixing chamber so that the reaction was carried out under a nitrogen atmosphere to prevent oxidation during the reaction.

[0052] S2, freezing the modified product prepared in step S1 in an ice-water bath, and preparing the frozen modified product into modified particles...

Embodiment 2-5

[0075] The difference with embodiment 1 is: the difference of antibacterial monomer 1-vinylimidazole and peroxide initiator DTBHY concentration, other steps are all identical with embodiment 1, repeat no more at this.

[0076] Table 1 is parameter setting and its performance parameter in embodiment 1-5

[0077]

[0078] Combining with Table 1, it can be seen that the effect of antibacterial monomer 1-vinylimidazole on the antibacterial properties of antibacterial polypropylene melt-blown materials is: when the weight of polypropylene (PP), antibacterial monomer and initiator is 40g, the antibacterial monomer is 150-450 mpm (moles per million parts of PE), the obtained antibacterial polypropylene melt-blown material has the best performance.

[0079] The effect of the peroxide initiator on the antibacterial properties of antibacterial polypropylene melt-blown materials is: when the weight of PP, antibacterial monomer and initiator is 40g, the peroxide initiator is controlled...

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Abstract

The invention provides an antibacterial polypropylene melt-blown material as well as a preparation method and application thereof. According to the invention, polypropylene is used as a base material,1-vinylimidazole is used as an antibacterial monomer, the antibacterial monomer is grafted to a main chain of the polypropylene to form a polypropylene melt-blown material intermediate, and an antibacterial structure with halamine is formed on a molecular chain of the polypropylene melt-blown material intermediate through amine halogenation; therefore, the antibacterial polypropylene melt-blown material is obtained. The polypropylene melt-blown material provided by the invention has excellent, durable and renewable antibacterial functions, and has a huge application prospect in the field of cloth for medical treatment and public health.

Description

technical field [0001] The invention relates to the field of textile materials, in particular to an antibacterial polypropylene melt-blown material and its preparation method and application. Background technique [0002] Polypropylene material has stable chemical properties, good mechanical strength and thermal stability, and is widely used in the pharmaceutical industry, water treatment technology, packaging materials, etc. Among them, the polypropylene melt-blown non-woven material is light, soft, and has good air permeability, and is widely used in the field of medical biomaterials such as medical masks. However, due to the hydrophobic properties of polypropylene, bacteria can easily adhere and grow on its surface, and then form biofilms; the formation of biofilms will have a certain impact on human health. Therefore, the development and research of polypropylene melt-blown materials with antibacterial properties is of great significance and commercial value. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F226/06C08F8/20D01F6/46D01F6/56D01F1/10
CPCC08F255/02C08F8/20D01F6/46D01F6/56D01F1/103C08F226/06
Inventor 王栋吴建美赵青华尤海宁梅涛宋银红
Owner WUHAN TEXTILE UNIV
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