02072naa a2200325 a 450000100080000000500110000800800410001902400390006010000230009924501470012226000090026952010590027865000220133765000150135965000180137465000230139265000220141565000140143765300240145165300270147565300240150265300290152670000250155570000220158070000210160270000190162370000320164270000190167477300530169320835332018-02-22       2017    bl uuuu     u00u1 u    #d7 a10.1016/j.carbpol.2016.08.0902DOI1 aVASCONCELOS, N. F.  aBacterial cellulose nanocrystals produced under different hydrolysis conditionsbproperties and morphological features.h[electronic resource]  c2017  aBacterial cellulose (BC) is a polymer with interesting physical properties owing to the regular and uniformstructure of its nanofibers, which are formed by amorphous (disordered) and crystalline (ordered) regions.Through hydrolysis with strong acids, it is possible to transform BC into a stable suspension of cellulosenanocrystals, adding new functionality to the material. The aim of this work was to evaluate the effectsof inorganic acids on the production of BC nanocrystals (BCNCs). Acid hydrolysis was performed usingdifferent H2SO4concentrations and reaction times, and combined hydrolysis with H2SO4and HCl wasalso investigated. The obtained cellulose nanostructures were needle-like with lengths ranging between622 and 1322 nm, and diameters ranging between 33.7 and 44.3 nm. The nanocrystals had a crystallinityindex higher than native BC, and all BCNC suspensions exhibited zeta potential moduli greater than30 mV, indicating good colloidal stability. The mixture of acids resulted in improved thermal stabilitywithout decreased crystallinity.  ahydrochloric acid  ahydrolysis  asulfuric acid  aÁcido Clorídrico  aÁcido Sulfúrico  aHidrolise  aBacterial cellulose  aCellulose nanocrystals  aCelulose bacteriana  aNanocristais de celulose1 aFEITOSA, J. P. DE A.1 aGAMA, F. M. P. DA1 aMORAIS, J. P. S.1 aANDRADE, F. K.1 aSOUZA FILHO, M. de S. M. de1 aROSA, M. de F.  tCarbohydrate Polymersgv. 155, p. 425-431, 2017.