Microﬁbrillated cellulose is a new biomaterial having astonishing intrinsic properties. It was ﬁrst used in nanocomposites due to its environmentally friendly nature and mechanical reinforcement. It has found various other uses and particularly in a high-value applications . That is why significantly has been increasing interest in development of environmentally friendly technologies of microﬁbrillated cellulose (MFC) extraction from plants. In this article disintegration of hemp fibres from variety Purini grown in Latvian Agricultural Science Centre of Latgale by steam explosion and ultrasound treatment were investigated with the aim to evaluate steam explosion (SE) pre-treatment influence on hemp fibre microstructure and ultrasound treatment effectiveness investigation on cellulose disintegration processes into microﬁbrillated cellulose. The acquired results after steam explosion treatment, water extraction and extraction by 0.4 wt. % NaOH are discussed and interpreted by Fourier transform infrared spectroscopy (FTIR). Scanning electron microscopy (SEM) was used to examine the microstructure of hemp fibres before and after each of the treatment
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