Biodegradable polymers - analysis of biodegradable polymers by
... to a family of copolymers with various fractions of acetylated units containing both chitin and chitosan monomers. The main interest in chitosan derives from its cationic nature in acidic solutions which provides unique properties relative to other polysaccharides, which are usually neutral or negat ...
... to a family of copolymers with various fractions of acetylated units containing both chitin and chitosan monomers. The main interest in chitosan derives from its cationic nature in acidic solutions which provides unique properties relative to other polysaccharides, which are usually neutral or negat ...
Theoretical prediction on mechanical and thermal
... system [8]. The melting point of YAM is 2020 ℃, which is higher than that of YAG (1940 ℃). In addition, YAM has a low density of 4.44 g/cm3, a relative low Young’s modulus of 190 GPa, and a low minimum thermal conductivity of 1.10 W·m1·K1 [7]. The unique combination of these properties makes YAM a ...
... system [8]. The melting point of YAM is 2020 ℃, which is higher than that of YAG (1940 ℃). In addition, YAM has a low density of 4.44 g/cm3, a relative low Young’s modulus of 190 GPa, and a low minimum thermal conductivity of 1.10 W·m1·K1 [7]. The unique combination of these properties makes YAM a ...
Expanding cements with controlled hardening time
... hydosulfoaluminate - ettringite (3CaO·Al2O3·3CaSO4·31H2O) with introducing additives into cement formula that include low-basic calcium aluminate (CaO·2Al2O3). It has been found that simultaneous presence of calcium aluminates with different besicity in the hardening cement - CA2 additive and C3A Po ...
... hydosulfoaluminate - ettringite (3CaO·Al2O3·3CaSO4·31H2O) with introducing additives into cement formula that include low-basic calcium aluminate (CaO·2Al2O3). It has been found that simultaneous presence of calcium aluminates with different besicity in the hardening cement - CA2 additive and C3A Po ...
Bonding and Properties of Compounds
... Electrolysis of an ionic solution or melt causes a chemical change at the electrodes. They do not conduct when solid as the ions are ‘locked in the lattice and cannot move to carry the current. ...
... Electrolysis of an ionic solution or melt causes a chemical change at the electrodes. They do not conduct when solid as the ions are ‘locked in the lattice and cannot move to carry the current. ...
1 Nano Metal Oxides for Li-Ion Batteries Juchen Guo and
... area. Generally speaking, the smaller size can shorten the Liion/electron transport pathways, and enhance the phase transformation. The large surface area can also speed up the charge transfer reaction kinetics due to the increased contact area with electrolyte. Enhanced Li insertion/extraction kine ...
... area. Generally speaking, the smaller size can shorten the Liion/electron transport pathways, and enhance the phase transformation. The large surface area can also speed up the charge transfer reaction kinetics due to the increased contact area with electrolyte. Enhanced Li insertion/extraction kine ...
Transport of metal ions across polymer inclusion membrane with 1
... ions in presence of nonferrous cations (Cu2+, Cd2+, Zn2+, Ni2+) across polymer inclusion membranes with proton diionizable polyethers bearing different alkyl chain lengths (from -C7H15 to -C16H33). The transport selectivity of PIM with polyether bearing -C8H17 alkyl chain was as follows: Pb2+ > Cu2+ ...
... ions in presence of nonferrous cations (Cu2+, Cd2+, Zn2+, Ni2+) across polymer inclusion membranes with proton diionizable polyethers bearing different alkyl chain lengths (from -C7H15 to -C16H33). The transport selectivity of PIM with polyether bearing -C8H17 alkyl chain was as follows: Pb2+ > Cu2+ ...