Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of electrostatic spinning ultrafiltration membrane containing bamboo pulp nano cellulose coating

A nanocellulose and electrospinning technology, applied in fiber processing, chemical instruments and methods, membrane technology, etc., can solve the problems of low flux and poor pollution resistance of ultrafiltration membranes, and achieve high flux and few constraints. , the effect of easy operation

Active Publication Date: 2016-01-06
上海展恒环保科技有限公司
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing water treatment ultrafiltration membranes such as low flux and poor anti-pollution, and provide a bamboo pulp-containing nanometer with high flux, good interception effect, good anti-pollution, and stable chemical properties. Preparation method of cellulose-coated electrospun ultrafiltration membrane

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] A preparation method of an electrospinning ultrafiltration membrane containing bamboo pulp nano-cellulose coating of the present invention uses bamboo fiber as the raw material of the coating solution, and utilizes the electrospinning technology and the uniform coating method to prepare a four-layer structure Composite water treatment filter membrane, the preparation steps of the described electrospun ultrafiltration membrane containing bamboo pulp nano-cellulose coating are as follows:

[0019] A, step (1) prepare bamboo pulp nano-cellulose suspension:

[0020] (a) Soak 1-10 parts by weight of bamboo fiber powder in 20-200 parts by weight of sodium hydroxide solution with a mass fraction of 5-30%, control the temperature at 30-80°C, and stir for 1-3 hours, Filtrate with a vacuum pump, wash the bamboo pulp fiber obtained to neutrality, and obtain alkali-treated bamboo pulp fiber powder after vacuum drying;

[0021] (b) Add the alkali-treated bamboo pulp fiber powder pr...

Embodiment 1

[0031] A preparation method of an electrospun ultrafiltration membrane containing bamboo pulp nanocellulose coating, comprising the following steps:

[0032] A, step (1) prepare bamboo pulp nano-cellulose precipitate:

[0033](a) Under the water bath temperature of 60°C, soak 10.0g of bamboo fiber powder in 120g of sodium hydroxide solution with a mass fraction of 10%, stir at a stirring speed of 400rpm for 1.5 hours, filter with a vacuum pump, and wash the obtained bamboo fiber with water. Pulp the fiber to neutral, vacuum-dry the bamboo pulp fiber powder, the vacuum degree is 0.1MPa, and the drying temperature is 70°C to obtain the alkali-treated bamboo pulp fiber powder;

[0034] (b) At 20°C, weigh 5 g of the alkali-treated bamboo pulp fiber powder prepared in step (1) and add it to a container containing 2,2,6,6-tetramethylpiperidine-1-oxygen free TEMPO catalyst system 0.001g, NaClO 15g and NaBr 0.01g aqueous solution were stirred at a stirring speed of 700rpm, and 3% sod...

Embodiment 2

[0044] A preparation method of an electrospun ultrafiltration membrane containing bamboo pulp nanocellulose coating, comprising the following steps:

[0045] A, step (1) prepare bamboo pulp nano-cellulose precipitate:

[0046] (a) At a water bath temperature of 70°C, soak 15.0g of bamboo fiber powder in 100g of 20% sodium hydroxide solution, stir at a stirring speed of 400rpm for 1.5 hours, filter with a vacuum pump, and wash the resulting bamboo fiber with water. Pulp the fiber to neutral, vacuum-dry the bamboo pulp fiber powder, the vacuum degree is 0.1MPa, and the drying temperature is 70°C to obtain the alkali-treated bamboo pulp fiber powder;

[0047] (b) Under the temperature condition of 20°C, weigh 5g of the alkali-treated bamboo pulp fiber powder prepared in step (1), and add it to the reaction kettle containing 0.001g of TEMPO catalytic reaction system, 15g of NaClO and 0.01g of NaBr aqueous solution. Stir, the stirring speed is 700rpm, add 3% sodium hydroxide dropw...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of an electrostatic spinning ultrafiltration membrane containing a bamboo pulp nano cellulose coating. The preparation method is characterized in that the electrostatic spinning ultrafiltration membrane containing the bamboo pulp nano cellulose coating adopts bamboo fibers as coating liquid raw materials, and a compound type water treatment filtration membrane containing a four-layer structure is prepared by adopting an electrostatic spinning technology and a uniform glue coating method. The preparation method of the electrostatic spinning ultrafiltration membrane containing the bamboo pulp nano cellulose coating comprises the following steps: step (1) preparing a bamboo pulp nano cellulose suspension liquid; step (2) preparing a polymer electrostatic spinning solution; step (3) carrying out electrostatic spinning; step (4) soaking the prepared compound layer of a non-woven layer and an electrostatic spinning layer; step (5) preparing a bamboo pulp nano cellulose coating solution; and step (6) carrying out solution coating and cross-linking reaction. The prepared finished electrostatic spinning ultrafiltration membrane product containing the bamboo nano cellulose coating with the four-layer structure is a compound type water treatment filter membrane.

Description

technical field [0001] The invention relates to a preparation method of an electrostatic spinning ultrafiltration membrane, in particular discloses a preparation method of an electrostatic spinning ultrafiltration membrane containing bamboo pulp nano-cellulose coating, which is applied in the fields of medicine, environmental protection, food and the like. Background technique [0002] Bamboo fiber is a cellulose fiber extracted from naturally growing bamboo, and is the fifth largest natural fiber after cotton, hemp, wool and silk. Bamboo fiber is mainly used in craft-made bamboo fiber fabrics, which have the functions of inhibiting the growth of bacteria, cleaning the air around the human body, and preventing infectious diseases. In addition to traditional applications, how to prepare nanocellulose and develop advanced nanocomposites, and how to use it in the fields of environmental protection, medicine, food, and energy has become a research topic that is being carried out...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/12D04H1/728D04H1/4258D06M15/05D06M15/53
Inventor 张秀芳方渡飞徐雄立顾洲杰
Owner 上海展恒环保科技有限公司