Self-Assembly Behavior of ABC Triblock Copolymer under Special Solvation Conditions: A Monte Carlo Study

Abstract

In this study, we report morphological transition of ABC triblock copolymer dissolved in special solvents that were good for the A block, poor for the B block, and marginal for the C block. The aggregate structure changes from rod to vesicle, and then to spherical superaggregates by changing the hydrophobicity of block B. Chain packing in different micelles is investigated.

Recent Development of Heterogeneous Catalysis in the Transesterification of Glycerol to Glycerol Carbonate

“…The catalytic activity was increased with the increase of the Al/Mg ratio which is identical to the trend of the surface basic site density. Transesterification of glycerol over Mg-Al mixed oxides supported on the mesoporous crystalline material (MCM-41) was reported by Wang et al [70]. There are three types of basic sites on the catalyst: (1) the weak basic sites of the OH − group on the surface of MCM-41; (2) moderate basic sites ascribed to Mg-O and Al-O pairs; and (3) strong basic sites related to coordinatively unsaturated O 2ions.…”