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Extraction method of rubber

An extraction method, rubber technology, applied in the field of extracting high-purity natural rubber, can solve the problem of low rubber purity

Active Publication Date: 2016-08-17
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for extracting rubber in order to solve the technical problem of low rubber purity in the existing rubber purification method

Method used

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  • Extraction method of rubber

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specific Embodiment approach 1

[0012] Specific embodiment 1: The rubber extraction method of this embodiment is carried out according to the following steps:

[0013] 1. First, the rubber grass roots and stems are separated, and the treated rubber grass roots are crushed into 20-200 meshes, and extracted with acetone, methanol or ethanol at a frequency of 4 cycles per hour for 6 hours, and the extracted materials are air-dried to obtain raw materials , Add distilled water according to the ratio of raw material to distilled water of 2g: 65mL, and then add 6ml of glacial acetic acid and 0.6g sodium chlorite for every 2g of raw material, then put it in a 75℃ water bath and heat it for 1h for 3 times to get Coarse cellulose

[0014] 2. Treat the crude heald cellulose with a NaOH solution with a NaOH mass fraction of 1-10% for 3 hours at room temperature, and then a NaOH solution with a NaOH mass fraction of 15-20% for 1 hour to obtain α-cellulose;

[0015] 3. Soak the α-cellulose with dichloromethane for 6 hours, fil...

specific Embodiment approach 2

[0016] Specific embodiment two: this embodiment is different from specific embodiment one in that in step one, the treated rubber grass root is crushed into 50-150 mesh. Others are the same as the first embodiment.

specific Embodiment approach 3

[0017] Specific embodiment three: This embodiment is different from specific embodiments one or two in that in step one, the treated rubber grass root is crushed into 100 mesh. Others are the same as the first or second embodiment.

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Abstract

The rubber extraction method relates to a method for extracting high-purity natural rubber from plants as raw materials. The invention aims to solve the technical problem of low rubber purity in the existing rubber purification method. The method is as follows: 1. First, separate the root of the rubber grass from the stem, pulverize the root of the rubber grass after treatment, reflux and extract, air-dry the extracted material to obtain the raw material, add distilled water, add glacial acetic acid and sodium chlorite dropwise, and place Heating in a water bath to obtain crude cellulose; 2. Treating the coarse cellulose with NaOH solution at room temperature to obtain α-cellulose; 3. Soaking α-cellulose in dichloromethane for 6 hours and filtering to obtain a mixed solution , the obtained mixed solution was rotary evaporated and dried in the shade to obtain rubber. The purity of the rubber extracted by the invention is relatively high, and the invention belongs to the field of extraction of natural rubber.

Description

Technical field [0001] The invention relates to a method for extracting high-purity natural rubber from plants using plants as raw materials. Background technique [0002] In order to solve the serious shortage of natural rubber latex resources in my country, it is particularly important to find a substitute for rubber trees. Plants containing natural rubber, such as rubber grass, are being understood as a new source of natural rubber. The traditional extraction methods include wet milling, dry milling, alkali cooking and solvent extraction, but these four methods cannot effectively obtain high-purity natural rubber. Summary of the invention [0003] The purpose of the present invention is to solve the technical problem of low rubber purity in the existing method for purifying rubber, and to provide a rubber extraction method. [0004] The extraction method of rubber is carried out according to the following steps: [0005] 1. First, the rubber grass roots and stems are separated, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/00C08L7/00
Inventor 李淑君李卓蒋明月王慧王梦楠
Owner NORTHEAST FORESTRY UNIVERSITY