Gas-phase esterification of microfibrillated cellulose (MFC) films

被引：26

作者：

Rodionova, Galina ^{[1
]}

Hoff, Bard ^{[1
]}

Lenes, Marianne ^{[2
]}

Eriksen, Oyvind ^{[2
]}

Gregersen, Oyvind ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway

[2] Paper & Fibre Res Inst, N-7491 Trondheim, Norway

来源：

CELLULOSE | 2013年 / 20卷 / 03期

关键词：

Gas-phase esterification; Acetic anhydride; Trifluoroacetic anhydride; Microfibrillated cellulose (MFC); Hydrophobicity; Oxygen barrier; HYDROXYL ACCESSIBILITY; PAPER; TRIFLUOROACETATES; DERIVATIZATION; STABILITY; ANHYDRIDE; FIBERS; PULP;

D O I：

10.1007/s10570-013-9887-5

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The barrier properties of microfibrillated cellulose (MFC) films were improved by heterogeneous gas-phase esterification using various combinations of trifluoroacetic acid anhydride, acetic acid and acetic anhydride. The temperature, reagent ratio and reaction time were varied in the experimental design. The effects of two different purification procedures on the barrier properties of esterified MFC films were investigated. Washing with water did not affect the barrier properties compared to those of the films that were not washed, while the use of diethyl ether led to improved barrier properties as measured by the contact angle (CA) of water. The chemical composition of the modified films was studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Alterations in hydrophobicity and oxygen permeability were evaluated using dynamic CA and oxygen transmission rate measurements, respectively.

引用

页码：1167 / 1174

页数：8

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