نتایج جستجو برای: hyperbranched polymers
تعداد نتایج: 71794 فیلتر نتایج به سال:
Abstract A series of hyperbranched polymer surfactants (HBP-C8, HBP-C12 and HBP-C16) were synthesized by the reaction between hydroxyl-terminated polymers (HBP) fatty acyl chloride. The structure obtained surfactant was characterized FTIR, NMR GPC. results showed that products have amphiphilic structure. thermal property investigated DSC TGA strongly influenced length end alkyl chain. Surface a...
Abstract The self-assembly of three different generations hyperbranched polyester-polyol polymers, based on 2,2-bis(methylol)propionic acid units (H20, H30, and H40 Boltorn®), carbon electrodes was studied. physico-chemical properties this family polymers confined a surface were explored by electrochemical impedance spectroscopy (EIS) atomic force microscopy (AFM). Surface pKa the polymer layer...
The dithiocarbamates (DTCs) have a special place within polymer chemistry due to their versatile role as thermal and photochemical initiators.[1] In particular the role of dithiocarbamate esters as “iniferters” in “living” radical polymerizations has practical significance.[2] The living nature of DTC ester-initiated photopolymerization derives from the extreme difference in reactivity of the r...
Abstract Compared to linear analogs, hyperbranched polymers (HBPs) have gotten much attention in the last decade because of their intrinsic globular topologies and distinctive features like low viscosity, high solubility, a degree functionality. In this work, four types polyester polymer HBPs been synthesized using A2+B3 polycondensation methodology. Firstly, starting material B3 monomer (Pyrim...
Single-crystalline hyperbranched nanostructures of iron hydroxyl phosphate Fe5(PO4)4(OH)3·2H2O (giniite) with orthorhombic phase were synthesized through a simple route. They have a well-defined dendrite fractal structure with a pronounced trunk and highly ordered branches. The toxicity test shows that the hyperbranched nanostructures have good biocompatibility and low toxicity level, which mak...
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