Nanoindentation of single pulp fibre cell walls

被引：29

作者：

Adusumalli, Ramesh-Babu ^{[1
]}

Mook, William M. ^{[1
]}

Passas, Raphael ^{[2
]}

Schwaller, Patrick ^{[1
]}

Michler, Johann ^{[1
]}

机构：

[1] EMPA, Swiss Fed Labs Mat Testing & Res, Dept Mat Technol, CH-3602 Thun, Switzerland

[2] Grenoble INP Pagora, Lab Pulp & Paper Sci & Graph Arts, F-38400 St Martin Dheres, France

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 10期

关键词：

CELLULOSE MICROFIBRIL ANGLE; ATOMIC-FORCE MICROSCOPY; MECHANICAL-PROPERTIES; YOUNGS MODULUS; SPRUCE WOOD; HARDNESS; INDENTATION;

D O I：

10.1007/s10853-010-4226-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Unrefined chemical pulps of bleached and unbleached softwood (Scots pine, Pinus sylvestris) and hardwood (Eucalyptus, Eucalyptus globulus) were subjected to indentation tests using a nanoindenter equipped with an AFM scanner. Tests on unbleached pulps revealed no difference in hardness values between softwood and hardwood, but bleaching treatment decreased the hardness values of both pulps. Indentation modulus of 12 GPa was observed for unbleached softwood pulps, which is 25% higher than unbleached hardwood pulps. Bleaching treatment again decreased the indentation modulus of the softwood pulps, whereas it slightly increased the indentation modulus of the hardwood pulps. After bleaching and drying processes, only negligible difference was observed in cell wall mechanical properties (hardness and indentation modulus) between hardwood and softwood pulps. This study is based on latewood pulp fibres.

引用

页码：2558 / 2563

页数：6

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