Wettability and surface composition of partly and fully regenerated cellulose thin films from trimethylsilyl cellulose

被引：90

作者：

Mohan, Tamilselvan ^{[2
]}

Kargl, Rupert ^{[1
]}

Doliska, Ales ^{[2
]}

Vesel, Alenka ^{[4
]}

Koestler, Stefan ^{[3
]}

Ribitsch, Volker ^{[1
,3
]}

Stana-Kleinschek, Karin ^{[2
]}

机构：

[1] Karl Franzens Univ Graz, Inst Chem, A-8010 Graz, Austria

[2] Univ Maribor, Fac Mech Engn, Lab Characterizat & Proc Polymers, SI-2000 Maribor, Slovenia

[3] MAT Inst Surface Technol & Photon, AT-8010 Graz, Austria

[4] Jozef Stefan Inst, SI-1001 Ljubljana, Slovenia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2011年 / 358卷 / 02期

关键词：

TMSC; Spin coating; Cellulose model surfaces; Static contact angle; Wettability; Surface free energy; XPS; ATR-IR; AFM; RAY PHOTOELECTRON-SPECTROSCOPY; MODEL FILMS; CONTACT-ANGLE; TENSION; COMPONENTS; FORCE; NANOFIBRILS; ADSORPTION; MORPHOLOGY; LIQUIDS;

D O I：

10.1016/j.jcis.2011.03.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The wettability and surface free energy (SFE) of partly and fully regenerated cellulose model surfaces from spin coated trimethylsilyl cellulose were determined by static contact angle (SCA) measurements. In order to gain detailed insight into the desilylation reaction of the surfaces the results from SCA measurements were compared with data from other surface analytical methods, namely thickness measurements, X-ray photoelectron spectroscopy (XPS) and attenuated total reflectance infrared spectroscopy (ATR-IR). Additionally, the influence of ultra high vacuum treatment (UHV) during XPS measurements on the water wettability and surface morphology of regenerated cellulose thin films was investigated. The wetting of polar and non-polar liquids increased with prolonged regeneration time, which is reflected in the higher SFE values and polarities of the films. After UHV treatment the water SCA of partly regenerated films decreases, whereas fully regenerated cellulose shows a higher water SCA. Therefore it is assumed that volatile desilylation products tend to adsorb on partly regenerated films, which strongly influences their wettability. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：604 / 610

页数：7

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