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Environment-friendly degradable sampling swab and preparation method thereof

An environmentally friendly, swab-based technology, which can solve problems such as damage and environmental pollution by removing certain components and weighing, using stable tension/pressure to test material strength, and testing wear resistance.

Pending Publication Date: 2022-04-01
SHENZHEN ZIJIAN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What follows is the pollution and destruction of the environment by a large number of discarded swabs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example I-1

[0041] A modified pomelo peel fiber, which is prepared by the following method:

[0042] Step S1: Take 170kg of grapefruit peel, remove impurities, peel off the outer skin of grapefruit peel, then collect white flocs, place them in 40wt% NaOH solution and soak for 30min, the surface of NaOH solution is submerged in grapefruit peel, take it out, and rinse with water 5 times, dried, and ground to 100 mesh to obtain pomelo peel particles;

[0043] Step S2: Add 270kg of n-hexane into the reaction kettle, then add pomelo peel particles into the reaction kettle, then add 50kg of acrylic acid and 1kg of 98wt% concentrated sulfuric acid in sequence, mix well, heat up to 70°C, and reflux for 10h;

[0044] Step S3: Filtrate, take the filter residue, place the filter residue in n-hexane with a volume ratio of 1:10, ultrasonicate for 15 minutes, repeat the above operation four times in step S3, dry, and spin to obtain modified pomelo peel fiber.

preparation example I-2

[0046] A modified pomelo peel fiber, which differs from Preparation I-1 in that an equal amount of acetoacetic acid is used to replace acrylic acid, and the rest are the same as Preparation I-1.

preparation example II-1

[0049] A kind of microcrystalline cellulose modified polylactic acid, it adopts following method to prepare:

[0050] 120kg of polylactic acid, 25kg of microcrystalline cellulose, and 7kg of hydroxypropyl starch were added to a twin-screw extruder, melt-extruded and granulated to obtain modified polylactic acid, and the temperature of the machine head was 160°C.

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PUM

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Abstract

The invention relates to the technical field of sampling swabs, and particularly discloses an environment-friendly degradable sampling swab and a preparation method thereof. The environment-friendly degradable sampling swab comprises a sampling head, an environment-friendly degradable swab rod and swab glue coated on the periphery of one end of the swab rod, the swab glue is coated with the sampling head, the raw material of the sampling head comprises modified pomelo peel fibers, and the modified pomelo peel fibers are obtained through esterification reaction of organic acid and pomelo peel fibers. The sampling swab is environmentally friendly and degradable, the swab head has high water absorption performance and cell release rate, the swab rod has high breaking strength, the connection strength between the swab head and the swab rod is high, and market requirements are met.

Description

technical field [0001] The application relates to the technical field of sampling swabs, more specifically, it relates to an environment-friendly degradable sampling swab and a preparation method thereof. Background technique [0002] In order to detect microorganisms on the human body and animals, and to facilitate the preservation and transportation of microorganisms, sampling swabs are often used to sample and transfer microorganisms. Disposable sampling swab, also known as disposable sampling swab, is one of the most widely used detection tools at present. Sampling swabs are often used to collect oral mucosal cells, oral microorganisms, surface microorganisms, and surface bacteria. They are widely used in virus sampling and transport, DNA and RNA collection, throat sampling, cervical sampling, and nasopharyngeal sampling. [0003] The material of the sampling swab is closely related to the microbial test results. Sampling swabs usually include a sampling swab head and ...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01N21/64G01N3/08G01N3/56G01N3/00A61B10/02D01F9/00C08L67/04C08L1/04C08L3/08
Inventor 杨海芳马力敏蒋威谭选平袁艳梅赵起卿
Owner SHENZHEN ZIJIAN BIOTECH
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