In recent years, the study of natural polymer products such as methane hydrate inhibitors has attracted more and attention in scientific research field. order to achieve environmentally friendly economical with high activity, four chitosan derivatives were successfully synthesized their inhibition effects compared (CS) carboxymethyl (CMCS). Under conditions 6 MPa, 1 °C 400 rpm, induction time w...

In this paper, novel liver-targeting nanoparticles (NPs), lactosyl-norcantharidin (Lac-NCTD)-associated N-trimethyl chitosan (TMC) NPs (Lac-NCTD-TMC-NPs), were prepared using ionic cross-linkage. The physical properties, particle size, and encapsulation efficiency of the nanoparticles were then investigated. The continuous line of heterogeneous human epithelial colorectal adenocarcinoma cells (...

Chitosan was prepared from crab shell. Different derivatives of chitosan e.g. phosphate, cyanoethyl and carboxymethyl chitosan are prepared. Molecular structure of chitosan and its derivatives was fallowed by infrared spectroscopy. A new band at 1715cm -1 (carboxyl group), at 2253cm -1 (cyano group) and at 1200cm -1 for (c-o-p) in spectra of carboxymethyl chitosan, cyanoethyl chitosan and chito...

efficient and chemoselective protection of aldehydes to the corresponding dimethyl acetals have been carried out by mixture of trimethyl orthoformate and methanol in the presence of a catalytic amount of tmscl or alcl3 under microwave irradiation. under these conditions, acetalization of ketones does not take place and they remain intact under reaction conditions. the results are compared with ...

Particle-agglomerated films exhibit rough surfaces, which can be suitable for realization of ultra hydrophobicity. We fabricated particles and their deposits silica with organic functional groups (SiO:CH) by plasma polymerization organosilicon reactants including methyl vinyl groups. The trimethyl(vinyl)silane reactant showed a uniform deposition the plasma-polymerized SiO:CH in large area, whi...