Title:
PREPARATION METHOD FOR MULTI-SCALE NANOCELLULOSE FILM BASED ON FLAX FIBERS
Document Type and Number:
WIPO Patent Application WO/2022/095100
Kind Code:
A1
Abstract:
A preparation method for a multi-scale nanocellulose film based on flax fibers, comprising: weighing flax plant fibers, then adding sulfuric acid for hydrolysis to perform pretreatment, after the hydrolysis is completed, adding water to terminate the reaction, and obtaining a fiber suspension; performing centrifugal washing on the obtained fiber suspension, and collecting a liquid obtained by centrifuging and using the liquid as a pretreatment liquid; adjusting, by using an alkaline solution, solid residues obtained by centrifuging to be neutral, then performing centrifugal washing, and removing an inorganic salt to obtain activated flax plant fibers; separately recovering, by using a membrane separation method, a carbohydrate component and residual sulfuric acid in the collected pretreatment liquid; diluting the obtained activated flax plant fibers, and performing disc milling to obtain an activated flax plant fiber suspension; performing high-pressure homogenization on the obtained activated flax plant fiber suspension to obtain a flax nanocellulose suspension; and uniformly spraying the flax nanocellulose suspension, which is uniformly dispersed, onto a forming plate, reducing a moisture content, and then obtaining a multi-scale nanocellulose film based on flax fibers.
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Inventors:
MA XIANG (CN)
Application Number:
PCT/CN2020/128895
Publication Date:
May 12, 2022
Filing Date:
November 16, 2020
Export Citation:
Assignee:
SUZHOU NASHENGYUAN NEW MATERIAL TECH CO LTD (CN)
International Classes:
D21H11/12; D21B1/02; D21C5/00; D21F11/00
Foreign References:
| CN112281538A | 2021-01-29 | |||
| CN107447565A | 2017-12-08 | |||
| CN110359311A | 2019-10-22 | |||
| CN102604139A | 2012-07-25 | |||
| CN105498550A | 2016-04-20 | |||
| CN108396591A | 2018-08-14 | |||
| CN110621822A | 2019-12-27 | |||
| CN104105827A | 2014-10-15 | |||
| KR20110135737A | 2011-12-19 | |||
| CA2437616A1 | 2005-02-04 |
Attorney, Agent or Firm:
HEFEI KERONG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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