Preparation method of optical cellulose triacetate

Preparation method of optical cellulose triacetate

The invention discloses a preparation method of optical cellulose triacetate, belonging to the technical field of high polymer chemistry. The method comprises the following steps of: (1) crushing of the refined cotton; (2) drying of the refined cotton; (3) activation; (4) esterification; (5) neutral...

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Hauptverfasser: SUN DENGLIN, YANG YANTING, ZHAO SHUANG, LIU CHANGZENG, ZHAO LEI, XU XIANGQIAN, AN ZHONGWEI
Format: Patent
Sprache:chi ; eng
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CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator SUN DENGLIN
YANG YANTING
ZHAO SHUANG
LIU CHANGZENG
ZHAO LEI
XU XIANGQIAN
AN ZHONGWEI
description The invention discloses a preparation method of optical cellulose triacetate, belonging to the technical field of high polymer chemistry. The method comprises the following steps of: (1) crushing of the refined cotton; (2) drying of the refined cotton; (3) activation; (4) esterification; (5) neutralization; (6) dilution and bleaching; (7) filtering, precipitation, wet crushing and washing; (8) drying; and (9) granulation. The method disclosed by the invention can reduce the ash content and acetic acid content of the cellulose triacetate and improve the mechanical properties and optical characteristics of a cellulose triacetate membrane; and the prepared cellulose triacetate has uniform particles and low viscosity and can be quickly dissolved.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
title Preparation method of optical cellulose triacetate
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