Moisture induced softening and swelling of natural cellulose fibres in composite applications

37th Risø International Symposium on Materials Science

Gamstedt, E.K.^1

Uppsala University, Department of Engineering Sciences, Box 534, Uppsala

SE-75121, Sweden^1

关键词: Cellulose composites;    Composite applications;    Controlling parameters;    Experimental mechanics;    Materials development;    Moisture absorption;    Moisture resistance;    Moisture-resistant;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/139/1/012003/pdf
DOI  :  10.1088/1757-899X/139/1/012003

来源: IOP

【 摘 要 】

Composites based on natural cellulose fibres are susceptible to moisture. The fibres as well as the composite will inevitably soften and swell as moisture is absorbed. The intention of the present paper is to shed some light on the mechanisms behind softening and swelling. Also references to modelling work are made, to predict the moisture-induced dimensional stability. Characterisation techniques and models of such kind can be useful in choosing suitable fibres for improved moisture resistance, and identifying the main controlling parameters which affect the engineering consequences of moisture absorption. Understanding of the mechanisms and the main contributions to swelling can rationalise materials development. The examples shown in this review attempt to show the benefits by experimental mechanics and modelling in development of moisture resistant cellulose composites.