期刊
CELLULOSE
卷 18, 期 1, 页码 57-65出版社
SPRINGER
DOI: 10.1007/s10570-010-9463-1
关键词
Cellulose; Whiskers; Microfibrillated cellulose (MFC); Sisal; Cellulases; Enzymatic hydrolysis; Nanocomposites
资金
- ALBAN Program
In a previous work (Siqueira et al. 2010b) the preparation of cellulosic nanoparticles from sisal fibers using different processing routes, viz. a combination of mechanical shearing, acid and enzymatic hydrolysis was reported. It was shown that the pre-enzymatic hydrolysis treatment of bleached sisal pulp helps the preparation of well individualized rod-like nanocrystals. An amorphous polymer (natural rubber-NR) was chosen as model matrix to investigate the effect of these nanoparticles on the thermo-mechanical properties of nanocomposites. Both tensile tests and dynamic mechanical analyses showed improved stiffness for all nanocomposites. The enzymatic treatment allowed production of a huge range of cellulosic nanoparticles which provided completely different mechanical properties to NR matrix.
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