Laser-light-scattering study of internal motions of polymer chains grafted on spherical latex particles

Article Abstract:

Core-shell particles are prepared by grafting thermally sensitive ploy(N-isopropylacrylamide) (PNIPAM) chains on a spherical polystyrene latex core via the grafting-form approach, using atom-transfer radical polymerization. Results showed that, besides the translation diffusion of the particle as a whole, there also exists an additional slow relaxation mode that is only observable at larger scattering vectors (q), which are presumably related to internal motions of the shell.

Petroleum Refineries, Petroleum refining, Polymerization, Methods, Light scattering, Diffusion bonding (Metals)

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Effects of pH and ionic strength on the stability of nanobubbles in aqueous solutions of [alpha]-cyclodextrin

Article Abstract:

Laser light scattering (LLS) and zeta-potential measurements are used for examining the effects of salt concentration and pH on their stability in [alpha]-cyclodextrin aqueous solutions. The electric double layer has played a vital dual role in the formation of stable nanobubbles in aqueous solutions of water-soluble organic molecules.

Science & research, All Other Miscellaneous Electrical Equipment and Component Manufacturing, Lasers, Lasers & Related Equip, Research, Optical properties, Solvation, Ionic solutions, Hydrogen-ion concentration, Laser, pH

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Observation of kinetic and structural scalings during slow coalescence of nanobubbles in an aqueous solution

Article Abstract:

The static and dynamic laser light scattering is used for observing the coalescence of nanobubbles in an aqueous solution of [alpha]-cyclodextrin ([alpha]-CD). The results have shown that its kinetic and structural properties have followed the scaling laws.

Analysis, Observations, Nanotechnology, Scaling laws (Statistical physics), Scaling laws (Mathematical physics), Laser photochemistry, Aqueous solution reactions

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