Elastoplastic Properties of Starch-Based Materials as Revealed by Microindentation Measurements
作者:
A. FLORES,
R.K. BAYER,
K. KRAWIETZ,
F.J. BALTÁ CALLEJA,
期刊:
Journal of Macromolecular Science, Part B
(Taylor Available online 2000)
卷期:
Volume 39,
issue 5-6
页码: 749-759
ISSN:0022-2348
年代: 2000
DOI:10.1081/MB-100102485
出版商: Taylor & Francis Group
关键词: Depth sensing;Microhardness;Starch;Young modulus
数据来源: Taylor
摘要:
The elastoplastic properties of injection-molded starch and starch-cement composites were investigated by load-displacement analysis from depth-sensing experiments. The creep behavior under the indenter was studied. Hardness data from the depth-sensing and imaging methods were shown to be in good agreement. The Young modulus values derived from the compliance method were studied; results are discussed in the light of the various materials used. Finally, the influence of annealing temperature on the microhardness of starch and of the starch-cement composites, processed under a water vapor atmosphere, was investigated. Results reveal a hardening of the materials on thermal treatment. This hardness increase is associated with an equilibrium water content decrease detected within the samples.
点击下载:
PDF (142KB)
返 回