Poly(hydroxybutyrate)/cellulose acetate blend nanofiber scaffolds: Preparation, characterization and cytocompatibility

Synthesis of Poly(3-Hydroxybutyrate)/Copper Sulfide Composites Films and their Photocatalytic Application

“…The PHB which has an orthorhombic unit cell with the crystal planes of (020), (101), (111), (121), (002) and (222) with the corresponding angles at 13.6°, 17°, 22.6°, 26°, 31.7° and 44.5° respectively. 13 As for PHB/CuS nanocomposite, the peak observed for PHB become less intense due to the presence of CuS peaks as previously described. AAS analysis was carried out for all the PHB/CuS composites films to determine the weight percentage (wt%) of copper sulfide that have been transferred into the PHB.…”

Enhancement of fibroblast growing on the mannosylated surface of cellulose membranes

“…In the other hand, the product of amide coupling has an aromatic ring, which will absorb in the ultraviolet light range associated with arylamides that agrees with our experimental data on λ max 260 nm. 13 C NMR CP-MAS spectrum analysis could also confirm the coupling of mannoside 4 to the BC-Sc membrane. In the Fig.…”

“…In biomedical field, bacterial cellulose has been used as skin bandage, coating cardiac stents, covering of chirurgical material, drug release, etc. [5,[8][9][10][11][12][13] The compatibility with tissues and the inefficiency of human body to degrade it due to lack of β-glucosidases among other factors, explains the successful of the great range of applications of bacterial cellulose in this field.…”

“…In general, chemical composition modification, especially those in which bioactive molecules are introduced, might add new biological functions to any material, which becomes a biomaterial. Some strategies have been applied to achieve new derivatives of cellulose (bacterial or vegetal), including composites formation and attaching material by covalent bond [14][15][16][17][18][19][20][21][22]13]. The latter represents an elegant methodology due to the finesse of the modification at molecular level forming a better know structure material.…”

“…13 C NMR CP-MAS spectrum of BC-Sc-Mann (100 MHz). Arrows indicate aromatic signals from arylmannosides (from 120 to 160 ppm) and succinic methylenes splitted by the amide formation(15-35 ppm).…”