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. 2014 Aug 25;7(9):6105-6119.
doi: 10.3390/ma7096105.

Native Cellulose: Structure, Characterization and Thermal Properties

Matheus Poletto  1 , Heitor L Ornaghi  2 , Ademir J Zattera  3
Affiliations

Native Cellulose: Structure, Characterization and Thermal Properties

Matheus Poletto et al. Materials (Basel). .

Abstract

In this work, the relationship between cellulose crystallinity, the influence of extractive content on lignocellulosic fiber degradation, the correlation between chemical composition and the physical properties of ten types of natural fibers were investigated by FTIR spectroscopy, X-ray diffraction and thermogravimetry techniques. The results showed that higher extractive contents associated with lower crystallinity and lower cellulose crystallite size can accelerate the degradation process and reduce the thermal stability of the lignocellulosic fibers studied. On the other hand, the thermal decomposition of natural fibers is shifted to higher temperatures with increasing the cellulose crystallinity and crystallite size. These results indicated that the cellulose crystallite size affects the thermal degradation temperature of natural fibers. This study showed that through the methods used, previous information about the structure and properties of lignocellulosic fibers can be obtained before use in composite formulations.

Keywords: FTIR; XRD; cellulose; crystallinity; natural fibers; thermal stability.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
FTIR spectra of the wood fibers (a); and vegetal fibers (b) studied.
Figure 2
Figure 2
X-ray diffractograms of (a) wood species and (b).vegetal fibers studied
Figure 3
Figure 3
Liner regression comparing the Hermans (a); and Segal (b) methods.
Figure 4
Figure 4
Thermogravimetric curves for the wood (a); and vegetal fibers (b) studied.
See this image and copyright information in PMC

References

    1. Poletto M., Zeni M., Zattera A.J. Effects of wood flour addition and coupling agent content on mechanical properties of recycled polystyrene/wood flour composites. J. Thermoplast. Compos. Mater. 2012;25:821–833. doi: 10.1177/0892705711413627. - DOI
    1. Ornaghi H.L., Jr., Bolner A.S., Fiorio R., Zattera A.J., Amico S.C. Mechanical and dynamic mechanical analysis of hybrid composites molded by resin transfer molding. J. Appl. Polym. Sci. 2010;118:887–896.
    1. Romanzini D., Ornaghi H.L., Jr., Amico S.C., Zattera A.J. Influence of fiber hybridization on the dynamic mechanical properties of glass/ramie fiber-reinforced polyester composites. J. Reinf. Plast. Compos. 2012;31:1652–1661. doi: 10.1177/0731684412459982. - DOI
    1. Han G., Huan S., Han J., Zhang Z., Wu Q. Effect of acid hydrolysis conditions on the properties of cellulose nanoparticle-reinforced polymethylmethacrylate compostes. Materials. 2014;7:16–29. - PMC - PubMed
    1. Klemm D., Heublein B., Fink H.-P., Bohn A. Cellulose: Fascinating biopolymer and sustainable raw material. Angew. Chem. Int. Ed. 2005;44:3358–3393. doi: 10.1002/anie.200460587. - DOI - PubMed