Property comparison of cellulose acetate prepared homogeneously and heterogeneously

Shuang Men; Wen Jun Wang; Zi Qiang Shao

Property comparison of cellulose acetate prepared homogeneously and heterogeneously

Shuang Men^*, Wen Jun Wang, Zi Qiang Shao

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Cellulose acetate was prepared homogeneously in DMAc/LiCl without any catalyst. The structure and properties of CA prepared homogeneously and heterogeneously were compared by IR, ¹H-NMR, X-ray diffraction and DSC. The results indicate that the substitution distribution on 2, 3, 6 position on the anhydroglucose unit of CA prepared homogeneously is more balanced than that of heterogeneously. The crystallinity of CA prepared heterogeneously deceases from 80% of cellulose to 40% compared with cellulose. While CA produced homogeneously changes into amorphous state completely. The T_g of CA prepared homogeneously is lower than that of heterogeneously, the light transmittance of solution of CA prepared homogeneously is higher than that of heterogeneously.

Original language	English
Pages (from-to)	74-77
Number of pages	4
Journal	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
Volume	24
Issue number	8
Publication status	Published - Aug 2008

Keywords

Cellulose acetate
Heterogeneous
Homogeneous

Cite this

Men, S., Wang, W. J., & Shao, Z. Q. (2008). Property comparison of cellulose acetate prepared homogeneously and heterogeneously. Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering, 24(8), 74-77.

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abstract = "Cellulose acetate was prepared homogeneously in DMAc/LiCl without any catalyst. The structure and properties of CA prepared homogeneously and heterogeneously were compared by IR, 1H-NMR, X-ray diffraction and DSC. The results indicate that the substitution distribution on 2, 3, 6 position on the anhydroglucose unit of CA prepared homogeneously is more balanced than that of heterogeneously. The crystallinity of CA prepared heterogeneously deceases from 80% of cellulose to 40% compared with cellulose. While CA produced homogeneously changes into amorphous state completely. The Tg of CA prepared homogeneously is lower than that of heterogeneously, the light transmittance of solution of CA prepared homogeneously is higher than that of heterogeneously.",

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author = "Shuang Men and Wang, {Wen Jun} and Shao, {Zi Qiang}",

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journal = "Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering",

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TY - JOUR

T1 - Property comparison of cellulose acetate prepared homogeneously and heterogeneously

AU - Men, Shuang

AU - Wang, Wen Jun

AU - Shao, Zi Qiang

PY - 2008/8

Y1 - 2008/8

N2 - Cellulose acetate was prepared homogeneously in DMAc/LiCl without any catalyst. The structure and properties of CA prepared homogeneously and heterogeneously were compared by IR, 1H-NMR, X-ray diffraction and DSC. The results indicate that the substitution distribution on 2, 3, 6 position on the anhydroglucose unit of CA prepared homogeneously is more balanced than that of heterogeneously. The crystallinity of CA prepared heterogeneously deceases from 80% of cellulose to 40% compared with cellulose. While CA produced homogeneously changes into amorphous state completely. The Tg of CA prepared homogeneously is lower than that of heterogeneously, the light transmittance of solution of CA prepared homogeneously is higher than that of heterogeneously.

AB - Cellulose acetate was prepared homogeneously in DMAc/LiCl without any catalyst. The structure and properties of CA prepared homogeneously and heterogeneously were compared by IR, 1H-NMR, X-ray diffraction and DSC. The results indicate that the substitution distribution on 2, 3, 6 position on the anhydroglucose unit of CA prepared homogeneously is more balanced than that of heterogeneously. The crystallinity of CA prepared heterogeneously deceases from 80% of cellulose to 40% compared with cellulose. While CA produced homogeneously changes into amorphous state completely. The Tg of CA prepared homogeneously is lower than that of heterogeneously, the light transmittance of solution of CA prepared homogeneously is higher than that of heterogeneously.

KW - Cellulose acetate

KW - Heterogeneous

KW - Homogeneous

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M3 - Article

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SN - 1000-7555

VL - 24

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EP - 77

JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

IS - 8

ER -

Property comparison of cellulose acetate prepared homogeneously and heterogeneously

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