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Modified lignin particle emulsion as well as preparation method and application thereof

A technology of lignin and kraft lignin, applied in the field of modified lignin particle emulsion and its preparation, and preparation of surface sizing agent suitable for surface enhancement of medical dialysis paper and favorable for sealing, which can solve the problem of high cost and achieve improvement Air permeability, good sizing effect, good air permeability effect

Pending Publication Date: 2021-12-31
ZHEJIANG HENGDA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combined with the cost of raw materials and application effects, the most used surface sizing agents in my country are starch and its modified starch, polyvinyl alcohol (PVA), etc. Other sizing agents are more expensive

Method used

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  • Modified lignin particle emulsion as well as preparation method and application thereof
  • Modified lignin particle emulsion as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of modified lignin particle emulsion of the present embodiment, described method specifically comprises the following steps:

[0043] Dissolve 10g of kraft lignin in 200mL of deionized water, adjust the pH value of the resulting mixture to 10, make it fully dissolved and filter to obtain a kraft lignin solution; pour the kraft lignin solution into an electric Stirrer, serpentine reflux condenser, thermometer, and a four-necked flask with high-purity nitrogen inlet and outlet, heat up to 70°C, add mixed modified monomers (3g of butyl acrylate, methacryloyloxyethyl trimethyl chloride Ammonium chloride 1g, stearyl acrylate 4g, styrene 4g), stirred and emulsified for 30min; Potassium sulfate initiator, the dropping time is 30 minutes; after the dropping, continue to react the reaction system at 70°C for 1.5h, the total reaction time is 2h; then raise the temperature of the system to 80°C and keep it warm for 2h to obtain the modified The lignin...

Embodiment 2

[0046] A kind of preparation method of modified lignin particle emulsion of the present embodiment, described method specifically comprises the following steps:

[0047] Dissolve 10g of kraft lignin in 200mL deionized water, adjust the pH value of the resulting mixture to 9, make it fully dissolved and filter to obtain a kraft lignin solution; pour the kraft lignin solution into an electric Stirrer, serpentine reflux condenser, thermometer, and a four-necked flask with high-purity nitrogen inlet and outlet, heat up to 80°C, add mixed modified monomers (2g of butyl acrylate, methacryloyloxyethyl trimethyl chloride Ammonium chloride 1g, stearyl acrylate 2g, styrene 5g), stir and emulsify for 40min; Add 1.5% potassium persulfate initiator dropwise, and the dropping time is not less than 1h; after the dropping, continue to react the reaction system at 80°C, the total time between the dropping time and the continued reaction is 6h; then continue the system After 4 hours of heat pr...

Embodiment 3

[0050] A kind of preparation method of modified lignin particle emulsion of the present embodiment, described method specifically comprises the following steps:

[0051] Dissolve 10g of kraft lignin in 200mL of deionized water, adjust the pH value of the resulting mixture to 11, fully dissolve and filter to obtain a kraft lignin solution; pour the kraft lignin solution into an electric Stirrer, serpentine reflux condenser, thermometer, and a four-necked flask with high-purity nitrogen inlet and outlet, heat up to 60°C, add mixed modified monomers (2g of butyl acrylate, methacryloyloxyethyl trimethyl chloride After ammonium chloride 1g, stearyl acrylate 3g, styrene 3g), stir and emulsify for 50min; Slowly add 2% potassium persulfate initiator dropwise, and the dropping time is not less than 1h. After the dropping, the reaction system is continued to react at 70°C. The total time between the dropping time and the continued reaction is 4h, and then the system is Raise the temper...

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Abstract

The invention discloses a modified lignin particle emulsion as well as a preparation method and application thereof, and belongs to the technical field of papermaking chemicals. According to the invention, a combination of different branched chains (aromatic rings of styrene, aliphatic chains with different lengths of butyl acrylate and octadecanol acrylate, and cations of methacryloyloxyethyl trimethyl ammonium chloride) of monomers is utilized to modify sulfate lignin, so as to obtain the uniform modified lignin particle emulsion. In addition, a surface sizing agent is prepared by compounding the uniform modified lignin particle emulsion with starch, polyvinyl alcohol and zinc oxide particles. After the surface sizing agent prepared by the modified lignin particle emulsion is used for sizing the surface of medical dialyzing paper body paper, the paper has good air permeability. The surface sizing agent has a good sealing effect on polyethylene / polyamide, also has a certain antibacterial effect, and is very suitable for production of medical dialyzing paper.

Description

technical field [0001] The invention belongs to the technical field of papermaking chemicals, and in particular relates to a modified lignin particle emulsion and its preparation method and application, especially the application in the preparation of a surface sizing agent suitable for medical dialysis paper surface enhancement and sealing. Background technique [0002] Medical device sterilization packaging (referred to as medical packaging), refers to the packaging system applied to medical devices that need to be sterilized, which can be sterilized after packaging and provide antibacterial protection for medical devices before use. Medical device sterilization packaging is divided into protective packaging and sterile barrier system, the latter is a key component of sterilization packaging and is the main concern of the sterilization packaging industry. The construction of a sterile barrier system depends on the selection and processing of suitable dialysis packaging mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/18C08F220/34C08F212/08D21H23/34D21H21/16
CPCC08F289/00D21H23/34D21H21/16C08F220/1804C08F220/34C08F220/1818C08F212/08Y02W30/64
Inventor 伊财富杨菊红徐冰虞玲杜琼仙刘巧红汪静燕
Owner ZHEJIANG HENGDA NEW MATERIAL CO LTD
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