Method for preparing flexible transparent nano paper by utilizing bamboo fibers

A bamboo fiber and nano-paper technology, applied in special paper, pulping with inorganic alkali, paper, etc., can solve the problems of uncontrollable film thickness, transparency, paper is not easy to peel off, products are easy to crack, etc., and achieve high value-added economy. Efficient, easy to implement, low production cost effect

Active Publication Date: 2014-04-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paper produced by the first two methods above often cannot control the film thickness, transparency and other characteristics, and the formed product is easy to crack and the paper is not easy to peel off from the carrier; while the third method is complicated and consumes a lot of resources

Method used

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  • Method for preparing flexible transparent nano paper by utilizing bamboo fibers
  • Method for preparing flexible transparent nano paper by utilizing bamboo fibers
  • Method for preparing flexible transparent nano paper by utilizing bamboo fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one: Specific steps are as follows:

[0025] (1) Swelling and degumming: Put 3 g of bamboo fiber into the reactor, add 200 g of an aqueous solution containing 4 g of NaOH, place the reactor in an oil bath at 120 °C, stir and cook for 3 h, filter and wash until neutral, Take the filter residue; (2) Delignification: Add the filter residue obtained in the above steps to 300 mL of a mixed solution containing acetic acid and sulfuric acid, where the volume fraction of acetic acid is 88%, and the volume fraction of sulfuric acid is 0.3%, and stir at 90 °C for 4 h Remove lignin, filter and wash until neutral, and take the filter residue; (3) Bleaching: bleach the filter residue obtained in the above steps, add 1.5% NaClO 2 solution of 200 mL with CH 3 Adjust the pH to 3~4 with COOH, bleach in an oil bath at 80°C for 4 h, filter and wash until neutral, and take the filter residue; (4) Fibrillation: Dilute the sample obtained in the above steps with 200 mL of etha...

Embodiment 2

[0027] Embodiment two: Specific steps are as follows:

[0028] (1) Swelling and degumming: Put 3 g of bamboo fibrils into the reactor, add 200 g of aqueous solution containing 6 g of NaOH, place the reactor in an oil bath at 140 °C, stir and cook for 4 h, filter and wash until neutral, Take the filter residue; (2) Delignification: Add the filter residue obtained in the above steps to 300 mL of a mixed solution containing acetic acid and sulfuric acid, where the volume fraction of acetic acid is 88%, and the volume fraction of sulfuric acid is 0.3%, and stir at 90 °C for 6 h Remove lignin, filter and wash until neutral, and take the filter residue; (3) Bleaching: bleach the filter residue obtained in the above steps, add 1.5% NaClO 2 solution of 300 mL with CH 3 Adjust the pH to 3~4 with COOH, bleach at 80°C for 6 h in an oil bath, filter and wash until neutral, and take the filter residue; (4) Fibrillation: Dilute the sample obtained in the above steps with 200 mL of ethan...

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Abstract

The invention provides a method for preparing flexible transparent nano paper by utilizing bamboo fibers. The flexible transparent nano paper is prepared by using the bamboo fibers as raw materials and carrying out five treatment processes including swelling and degumming, delignification, bleaching treatment, nano fibrillation treatment and paper forming. The method has the advantages that a film is formed by adopting high-pressure filtration, the process is simple, and the film thickness is controllable; the prepared transparent nano paper has the characteristics of micropore structure, large specific surface area, transparency and flexibility; the transparent nano paper has good application prospects in the fields such as thin film solar batteries, super-capacitors, lithium-ion battery separators, catalytic carriers, environmental management, antistatic electricity and the like.

Description

technical field [0001] The invention relates to a method for preparing flexible transparent nano-paper by using bamboo fibres, belonging to the field of nano-material preparation, in particular to the technical field of cellulose nano-paper preparation. Background technique [0002] Currently the biggest challenge in the electronics industry is to manufacture portable, flexible, low-cost and recyclable devices. Flexible electronics are developing in the direction of large area, high efficiency, and low cost. The next generation of flexible electronic systems such as flexible displays, thin film sensors, OLEDs, solar cells, human-computer interaction, and e-textiles, the characteristics of substrate materials and the characteristics of substrates and conductors The interface properties between materials put forward higher requirements. Glass substrates are widely used in electronics and displays, and have a low coefficient of thermal expansion (CET), but are highly brittle a...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21C9/14D21C3/02
Inventor 冯欣赵经鹏施利毅孟祥浩曹绍梅苗苗王钢领方建慧
Owner SHANGHAI UNIV
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