Journal
MATERIALS
Volume 6, Issue 6, Pages 2240-2261Publisher
MDPI
DOI: 10.3390/ma6062240
Keywords
alpha-cellulose; compression-molding; agromaterials; biomaterials; mechanical properties
Categories
Funding
- French National Research Agency (ANR)
- Competitive Cluster for the Agriculture and Food Industries in South-West of France
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Commercial alpha-cellulose was compression-molded to produce 1A dog-bone specimens under various operating conditions without any additive. The resulting agromaterials exhibited a smooth, plastic-like surface, and constituted a suitable target as replacement for plastic materials. Tensile and three-points bending tests were conducted according to ISO standards related to the evaluation of plastic materials. The specimens had strengths comparable to classical petroleum-based thermoplastics. They also exhibited high moduli, which is characteristic of brittle materials. A higher temperature and higher pressure rate produced specimens with higher mechanical properties while low moisture content produced weaker specimens. Generally, the strong specimen had higher specific gravity and lower moisture content. However, some parameters did not follow the general trend e. g., thinner specimen showed much higher Young's Modulus, although their specific gravity and moisture content remained similar to control, revealing a marked skin-effect which was confirmed by SEM observations.
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