CN115109278A - Preparation method of cellulose diacetate particles - Google Patents
Preparation method of cellulose diacetate particles Download PDFInfo
- Publication number
- CN115109278A CN115109278A CN202110290975.2A CN202110290975A CN115109278A CN 115109278 A CN115109278 A CN 115109278A CN 202110290975 A CN202110290975 A CN 202110290975A CN 115109278 A CN115109278 A CN 115109278A
- Authority
- CN
- China
- Prior art keywords
- cellulose diacetate
- particles
- preparation
- diacetate particles
- water
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Links
- 229920001747 Cellulose diacetate Polymers 0.000 title claims abstract description 37
- 239000002245 particle Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 7
- 229920000875 Dissolving pulp Polymers 0.000 claims description 2
- 230000006196 deacetylation Effects 0.000 claims 1
- 238000003381 deacetylation reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 3
- 239000002984 plastic foam Substances 0.000 abstract description 3
- 238000005191 phase separation Methods 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/14—Powdering or granulating by precipitation from solutions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
- C08J2301/10—Esters of organic acids
- C08J2301/12—Cellulose acetate
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a preparation method of cellulose diacetate particles, which comprises the steps of taking cellulose diacetate as a raw material, dissolving the cellulose diacetate in a solvent, and obtaining the cellulose diacetate particles by utilizing the polarity difference of the solvent and water through a phase separation principle; the method of the invention is convenient and fast, has simple process and easy amplification, and the obtained cellulose diacetate particles have uniform size, good sphericity, high strength and good compression resistance, and can be used as a filler to replace the existing plastic foam as the filler of fragile products.
Description
Technical Field
The invention relates to the field of cellulose diacetate materials, in particular to a preparation method of cellulose diacetate particles.
Background
Plastic foam is a common pollutant in modern society, is difficult to degrade in nature, and generates a large amount of harmful substances after combustion treatment. Currently, much attention is paid to processing novel foam substitutes from natural biomass such as straw. However, the processing techniques starting from natural biomass are often relatively complex and not conducive to widespread use.
Cellulose diacetate is an important commercial derivative of natural cellulose, is a high polymer formed by esterifying cellulose and acetic acid, and has important application in the fields of paper industry, textile industry and the like. The cellulose diacetate is easy to be dissolved in an organic solvent, so that the cellulose diacetate is easy to process, and the cellulose diacetate tow has the characteristics of high strength, high toughness and difficult combustion, can be degraded in the environment and belongs to an environment-friendly material.
The aerogel material prepared from the cellulose diacetate has light density, maintains the characteristics of toughness, difficult combustion, no toxicity and harmlessness of the cellulose diacetate, and therefore, the cellulose diacetate has wide prospect for preparing the substitute of the plastic foam.
Disclosure of Invention
The invention aims to provide a preparation method of cellulose diacetate particles. The method is very simple and convenient, does not need a granulator or similar equipment, and the prepared cellulose diacetate particles have good sphericity and excellent compression resistance and can be used as a filler to replace the existing foamed plastic.
The preparation method of the cellulose diacetate particles comprises the following steps:
(1) dissolving cellulose diacetate in N, N-dimethylformamide to obtain a cellulose diacetate solution;
(2) dropwise adding the solution obtained in the step (1) into water under stirring, and filtering to obtain cellulose diacetate particles.
Furthermore, the concentration of the N, N-dimethylformamide solution of the cellulose diacetate is 5-10%, and the dissolving temperature is between 60 and 80 ℃.
Further, the volume of the solution added in the step (2) is 0.1-0.2 times of the volume of water, and the stirring speed is between 300 and 500 rpm.
The invention has the beneficial effects that:
the invention utilizes the polarity difference of N, N-dimethylformamide and water to obtain the cellulose diacetate particles by a phase separation method. The preparation method of the cellulose diacetate particles provided by the invention is very quick, the cellulose diacetate particles can be prepared without complex equipment, and the particles prepared by the method have good toughness and compression resistance.
Drawings
FIG. 1 is a schematic representation of cellulose diacetate particles obtained in example 1 of the present invention.
Detailed Description
Example 1
Weighing 2 g of cellulose diacetate, dissolving in 20 mL of N, N-dimethylformamide at 60 ℃ to form a transparent solution, dropwise adding 10 mL of the solution into 100 mL of deionized water, stirring at 500 rpm, and filtering to obtain cellulose diacetate particles.
Example 2
Weighing 10 g of cellulose diacetate, dissolving the cellulose diacetate in 100 mL of N, N-dimethylformamide at 60 ℃ to form a transparent solution, dropwise adding 100 mL of the solution into 800 mL of deionized water, stirring at the speed of 1000 rpm, and filtering to obtain cellulose diacetate particles.
Claims (3)
1. A method for preparing cellulose diacetate particles, characterized in that: the method comprises the following steps:
(1) dissolving cellulose diacetate in N, N-dimethylformamide to form a uniform solution, and uniformly stirring;
(2) and (2) dropwise adding the uniform solution prepared in the step (1) into water, and stirring to prepare cellulose diacetate particles.
2. A method for producing cellulose diacetate particles according to claim 1, characterized in that: the deacetylation degree of the cellulose diacetate used in the step (1) is 2.2-2.7, and the concentration of the cellulose diacetate dissolved in the N, N-dimethylformamide is 5% -10%.
3. The method of preparing cellulose diacetate particles according to claim 2 wherein: the solution added in the step (2) is added dropwise, the volume is 0.1-0.2 times of the volume of water, and the stirring speed is between 300 and 500 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290975.2A CN115109278A (en) | 2021-03-18 | 2021-03-18 | Preparation method of cellulose diacetate particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290975.2A CN115109278A (en) | 2021-03-18 | 2021-03-18 | Preparation method of cellulose diacetate particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115109278A true CN115109278A (en) | 2022-09-27 |
Family
ID=83322887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110290975.2A Pending CN115109278A (en) | 2021-03-18 | 2021-03-18 | Preparation method of cellulose diacetate particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115109278A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3953360A (en) * | 1973-03-19 | 1976-04-27 | Toyo Jozo Company, Ltd. | Preparation of selective adsorbing particles |
| US4888420A (en) * | 1987-12-08 | 1989-12-19 | Celanese Fibers, Inc. | Water soluble cellulose acetate microspheres |
| JP2009242592A (en) * | 2008-03-31 | 2009-10-22 | Daicel Chem Ind Ltd | Granular cellulose acetate acylate and its production method |
| CN104558640A (en) * | 2013-10-28 | 2015-04-29 | 南通醋酸纤维有限公司 | Preparation method of cellulose diacetate particles |
| CN105518059A (en) * | 2013-09-02 | 2016-04-20 | 捷恩智株式会社 | Method for producing porous cellulose particles, and porous cellulose particles |
| US20180043333A1 (en) * | 2015-04-03 | 2018-02-15 | Daicel Corporation | Method for producing porous cellulose medium |
-
2021
- 2021-03-18 CN CN202110290975.2A patent/CN115109278A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3953360A (en) * | 1973-03-19 | 1976-04-27 | Toyo Jozo Company, Ltd. | Preparation of selective adsorbing particles |
| US4888420A (en) * | 1987-12-08 | 1989-12-19 | Celanese Fibers, Inc. | Water soluble cellulose acetate microspheres |
| JP2009242592A (en) * | 2008-03-31 | 2009-10-22 | Daicel Chem Ind Ltd | Granular cellulose acetate acylate and its production method |
| CN105518059A (en) * | 2013-09-02 | 2016-04-20 | 捷恩智株式会社 | Method for producing porous cellulose particles, and porous cellulose particles |
| CN104558640A (en) * | 2013-10-28 | 2015-04-29 | 南通醋酸纤维有限公司 | Preparation method of cellulose diacetate particles |
| US20180043333A1 (en) * | 2015-04-03 | 2018-02-15 | Daicel Corporation | Method for producing porous cellulose medium |
Non-Patent Citations (2)
| Title |
|---|
| ZHAO-TIE LIU等: "A green route to prepare cellulose acetate particles from ramie fiber", 《REACTIVE&FUNCTIONAL POLYMERS》, vol. 67, no. 2, 28 February 2007 (2007-02-28), pages 104 - 112, XP005836164, DOI: 10.1016/j.reactfunctpolym.2006.10.001 * |
| 舒羚等: "选择性吸附活性炭颗粒的制备及性能", 《浙江大学学报（农业与生命科学版）》, vol. 41, no. 1, 31 December 2015 (2015-12-31), pages 111 - 118 * |
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