Carbopol polymers are of acrylic acid and crosslinking agents; there is the prospect penetration linear macromolecules between mesh size crosslinked microgels for a certain period time. Interpolyelectrolyte complex (IPEC) samples polycations (Eudragit EPO—EPO) were obtained at different interpolyelectrolyte reaction (IPER) times (1, 3, 7 days). Confirmation IPEC structures was proved by FTIR mD...

The most complex issue related to the design of high efficiency composite materials is behavior reinforcing component during bonding process. This study presents numerical and experimental investigations shape change in inlay an aluminum-steel mesh-aluminum roll-bonding. A flat material consisting two outer strips EN AW 1050 alloy expanded C10 steel mesh was obtained via hot roll with nominal r...

A highly convergent, enantioselective total synthesis of the potent antitumor agent apoptolidin A has been completed. The key transformations include highly selective glycosylations to attach the C27 disaccharide and the C9 6'-deoxy-l-glucose, a cross-metathesis to incorporate the C1-C10 trienoate unit, and a Yamaguchi macrolactonization to complete the macrocycle. Twelve stereocenters in the p...