Method for preparing bagasse pith parenchymal cell meshed quaternary ammonium salt cationic cellulose

A quaternary ammonium salt cation, parenchyma cell technology, applied in the field of natural polymer modified materials, can solve the problems of low reactivity, low reactivity, reaction inhomogeneity, etc., and achieve good adsorption performance, environmental friendliness and low cost. Effect

Inactive Publication Date: 2014-07-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of cellulose has high crystallinity and low reactivity. If no activation pretreatment (for example, dissolving cellulose or ultrasonic pretreatment, etc.), it determines that most chemical reactions can only stay in the local area of ​​the cellulose. Amorphous region, causing reaction inhomogeneity and low reactivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0032] Example 1: The preparation method of reticular quaternary ammonium salt cationic cellulose of sugarcane pulp parenchyma cells, the specific operation is as follows:

[0033] (1) Preparation process of sugarcane pith

[0034] The bagasse is air-dried, and the moisture of the air-dried raw material varies according to the air humidity in different regions and seasons, and is generally controlled within the range of 5-20%. Raw material of parietal cell tissue, spare;

[0035] (2) Delignification process of bagasse raw material

[0036] The delignification reaction conditions are: the amount of sodium hydroxide 50.0%, the amount of hydrogen peroxide 35.0%, the amount of magnesium sulfate 1.0%, the amount of anthraquinone 0.5%, oxygen pressure 0.8MPa, material treatment concentration 8.0%, reaction time 15.0h, treatment The temperature is 130°C.

[0037] The specific steps of bagasse delignification treatment are as follows: mix 10.0g of dry raw material of cane pith (if ...

Embodiment 2

[0056] Example 2: The preparation method of the reticular quaternary ammonium salt cationic cellulose of sugarcane pith parenchyma cells, the specific operations are as follows:

[0057] (1) Preparation process of sugarcane pith

[0058] The bagasse is air-dried, and the moisture of the air-dried raw material varies according to the air humidity in different regions and seasons, and is generally controlled within the range of 5-20%. Raw material of parietal cell tissue, spare;

[0059] (2) Delignification process of bagasse raw material

[0060] The delignification reaction conditions are: sodium hydroxide dosage 30.0%, hydrogen peroxide dosage 25.0%, magnesium sulfate dosage 0.5%, anthraquinone dosage 0.20%, oxygen pressure 0.6MPa, material processing concentration 12.0%, reaction time 10.0h, treatment The temperature is 110°C.

[0061] The specific process of bagasse delignification is as follows: take 10.0g of dry raw material of cane pith (if the moisture of air-dried ...

Embodiment 3

[0080] Example 3: The preparation method of the reticular quaternary ammonium salt cationic cellulose of sugarcane pith parenchyma cells, the specific operations are as follows:

[0081] (1) Preparation process of sugarcane pith

[0082] The bagasse is air-dried, and the moisture of the air-dried raw material varies according to the air humidity in different regions and seasons, and is generally controlled within the range of 5-20%. Raw material of parietal cell tissue, spare;

[0083] (2) Delignification process of bagasse raw material

[0084] The delignification reaction conditions are: sodium hydroxide dosage 20.0%, hydrogen peroxide dosage 10.0%, anthraquinone dosage 0.05%, no magnesium sulfate added, oxygen pressure 0.1MPa, material processing concentration 15.0%, reaction time 5.0h, processing temperature 90°C.

[0085] The specific process of bagasse delignification is as follows: 10.0g of dry raw material of cane pith (if the moisture content of air-dried raw ma...

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Abstract

The invention discloses a method for preparing bagasse pith parenchymal cell meshed quaternary ammonium salt cationic cellulose. The method comprises the following steps: airing the bagasse subjected to sugar milling, screening to obtain a bagasse pith raw material which takes parenchymal cell tissue as a principle component, performing sodium hydroxide/hydrogen peroxide/oxygen/anthraquinone delignification treatment on the raw material, soaking the delignification slurry in an aqueous solution of potassium hydroxide, and removing hemicellulose components to obtain cellulose; and carrying out an etherification reaction on alkali cellulose by adopting a microwave heating mode, synthesizing linear cationic cellulose ether, and carrying out a cross-linking reaction on the cleaned and dried cellulose ether by adopting an aqueous solution free radical initiation method to obtain the meshed quaternary ammonium salt cationic cellulose with high degree of substitution. The meshed quaternary ammonium salt cationic cellulose has high degree of substitution, the quaternary ammonium salt substitution degree is in a range of 0.29 to 0.61, and the meshed quaternary ammonium salt cationic cellulose can rapidly absorb water and swell until being dissolved when meeting water. The method has high application prospects in multiple aspects in textile dyeing and finishing, papermaking, mining, oil exploitation, daily-use chemical industry, water treatment of ethyl biological medicine and the like.

Description

technical field [0001] The invention relates to a process technology for preparing high-substitution reticular quaternary ammonium salt cationic cellulose by using cane pith cellulose, which is a solid waste in the sugar paper industry, and belongs to the technical field of natural polymer modified materials. Background technique [0002] Cationic cellulose is an important functional polymer material, which is mainly prepared by introducing cationic groups through the derivatization reaction on the hydroxyl groups of cellulose. Cationic cellulose was originally used as an additive in shampoo and liquid soap, and further research found that it also has special functions in other daily chemical products [1] . With the continuous development of science and technology, cationic cellulose has achieved certain results in the fields of printing and dyeing, biomedicine, etc. [2-6] . As an alternative to polyacrylamide flocculants, cationic cellulose can also be used as a new type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/02C08F226/02C08B11/145
Inventor 高欣张恒陈克利陶亚东颜学警郁哲
Owner KUNMING UNIV OF SCI & TECH
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