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Preparation method of alpha-cellulose, spinning composition, and fiber material

A fiber material and cellulose technology, which is applied in the fields of cellulose raw material pulping, single-component cellulose rayon, fiber raw material processing, etc. question

Inactive Publication Date: 2020-07-07
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the past, the recycling efficiency of agricultural wastes (such as rice stalks, fruit peels, etc.) is not good, and the apparent specific gravity of recycled materials is low, and the transportation cost is high, so the formed fibers have high cost

Method used

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  • Preparation method of alpha-cellulose, spinning composition, and fiber material
  • Preparation method of alpha-cellulose, spinning composition, and fiber material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 100 parts by weight of dried coffee grounds (dried at 80° C. for 120 minutes), 16.7 parts by weight of sodium hydroxide and 1083 parts by weight of water into a reaction bottle. After fully stirring at room temperature, 33.3 parts by weight of hydrogen peroxide was added into the reaction flask. After stirring at room temperature for 3 hours, a white precipitate was observed to separate out. Next, the resulting solution was filtered, and the filter cake was washed twice with water. Next, after drying the filter cake at 80°C, a white powder was obtained.

[0054] Next, 100 parts by weight of white powder, 106.25 parts by weight of sodium hydroxide, and 500 parts by weight of water were added into a reaction bottle. Next, after stirring at room temperature for 1 hour, the resultant was filtered, and a filter cake was collected. Next, wash the filter cake with hot pure water at 70-80° C. until the pH value of the filtrate reaches 7-8, so as to remove the residual so...

Embodiment 2

[0057] Add 6.5 parts by weight of α-cellulose (prepared by Example 1) and 100 parts by weight of N-methylmorpholine N-oxide (NMMO) in a slurry preparation tank, and increase the temperature of the slurry preparation tank to 95°C. Next, the mixture of cellulose and N-methylmorpholine N-oxide was stirred at an inner temperature of 90° C. in a slurry preparation tank under a nitrogen atmosphere. Then, after stirring for one hour, the temperature of the slurry preparation tank was raised to about 120° C., and stirred until the cellulose was completely dissolved in N-methylmorpholine N-oxide. Next, after cooling down to room temperature, the resultant was filtered, and the filtrate was collected to obtain a spinning composition (1).

Embodiment 3

[0059] 3.25 parts by weight of α-cellulose (prepared by Example 1), 3.25 parts by weight of commercially available cellulose (intrinsic viscosity is about 3.4dL / g, degree of polymerization is about 630) and 100 parts by weight of N-formazan Add morpholine N-oxide (NMMO) into a slurry preparation tank, and raise the temperature of the slurry preparation tank to 95°C. Next, the mixture of cellulose and N-methylmorpholine N-oxide was stirred at an inner temperature of 90° C. in a slurry preparation tank under a nitrogen atmosphere. Then, after stirring for one hour, the temperature of the slurry preparation tank was raised to about 120° C., and stirred until the cellulose was completely dissolved in N-methylmorpholine N-oxide. Next, after cooling down to room temperature, the resultant was filtered, and the filtrate was collected to obtain a spinning composition (2).

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Abstract

This disclosure provides a preparation method of alpha-cellulose, a spinning composition, and a fiber material. The preparation method includes: providing coffee waste; decolorizing the coffee waste to obtain a white powder; performing a reaction on the white powder with an alkaline solution to prepare a mixture, and filtering the mixture and drying an obtained filter cake to obtain the alpha-cellulose. The preparation method can solve the problems existing in the prior art, and reduce the cost.

Description

technical field [0001] The disclosure relates to a preparation method of α-cellulose, a spinning composition, and a fiber material. Background technique [0002] With the proposal of circular economy, people pay more and more attention to environment-friendly materials. [0003] In 2016, the daily output of coffee grounds in the world reached about 25,000 tons (estimated by the International Coffee Organization (ICO)). Coffee grounds themselves are biodegradable materials. Although sanitary burial will not cause major pollution to the environment, it will still cause the land to fail. Although many methods of using coffee grounds have been proposed in the industry, they are all low-level applications. If the coffee grounds are incinerated, a large amount of additional energy will be consumed, which will impose a burden on the environment and the use of energy. [0004] It is an existing technology to extract cellulose from agricultural waste to form fibers. However, in th...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21C3/02D21C9/16D01F2/00
CPCD21C5/00D21C3/024D21C9/163D01F2/00
Inventor 黄熹光陆天静萧凯仁唐静雯
Owner IND TECH RES INST
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