Studies on Structure and Properties of Water Dispersible Carboxymethyl Cellulose Acetate Butyrate

Shao-yi LÜ; Zi-qiang SHAO; Fei-jun WANG; Zhen-ling ZHANG

doi:10.14028/j.cnki.1003-3726.2011.12.012

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Studies on Structure and Properties of Water Dispersible Carboxymethyl Cellulose Acetate Butyrate

更新时间：2022-09-18

- Studies on Structure and Properties of Water Dispersible Carboxymethyl Cellulose Acetate Butyrate
- Polymer Bulletin Vol. 24, Issue 12, Pages: 92-98(2011)
- 作者机构：
  
  北京理工大学材料科学与工程学院，北京　100081
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2011.12.012
  CLC：
- Published：2011-12，
  
  Received：25 March 2011，
  
  Revised：23 April 2011，
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Shao-yi LÜ, Zi-qiang SHAO, Fei-jun WANG, Zhen-ling ZHANG. Studies on Structure and Properties of Water Dispersible Carboxymethyl Cellulose Acetate Butyrate. [J]. Polymer Bulletin 24(12):92-98(2011)
DOI：

Shao-yi LÜ, Zi-qiang SHAO, Fei-jun WANG, Zhen-ling ZHANG. Studies on Structure and Properties of Water Dispersible Carboxymethyl Cellulose Acetate Butyrate. [J]. Polymer Bulletin 24(12):92-98(2011) DOI： 10.14028/j.cnki.1003-3726.2011.12.012.

摘要

采用大浴比碱化、醚化与半均相酯化的合成方式

制备出纤维素混合醚酯——— 羧甲基纤维素醋酸丁酸酯( CMCAB) 。利用1H-NM R、FTIR、XRD、TG 和DSC 等技术对CMCAB 结构与热性能进行分析与表征

并对其溶液表面性能、水分散体流变性能进行了研究。结果表明

CMCAB 分子链上亲水性羧基分布均匀; CMCAB 结晶度低、热稳定性较好且

在110 ℃左右;乙酰基含量增加、丁酰基含量减少

CMCAB 的

减小

但晶型和热稳定性变化不大;CM CAB 对溶液表面张力的影响很小;CMCAB 水分散体具有良好的触变性。

Abstract

A new cellulose ether ester carboxymethyl cellulose acetate butyrate ( CMCAB) was synthesized by alkalization

etherification of big liquor ratio and partial homogeneo us esterification reaction. The structure and thermal properties of CMCAB was analyzed by

H-NMR

FTIR

XRD

TG and DSC

and surface tension of CMCAB solution and rheology of CMCAB water dispersions were also studied. The hydrophilic carboxy group in CMCAB molecular chain was well distributed. CMCABs had low crystallinity and good thermal stability

and Tg were about 110 ℃.As quantity of acetyl increased and quantity of butyryl decreased

Tg of CMCAB deceased

while crystal form and thermal stability changed little. Structure of CMCAB had little influence on surface tension of solution. CMCAB water dispersions exhibited good thixotropic property.

关键词

纤维素混合醚酯水可分散体化学结构性能

Keywords

Cellulose ether esterWater dispersionsChemical structureProperties

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