Coil–globule transition studies of sodium poly(styrene sulfonate) by dynamic light scattering

Polymer ◽  
2002 ◽  
Vol 43 (20) ◽  
pp. 5439-5445 ◽  
Author(s):  
Ersin Serhatli ◽  
Müge Serhatli ◽  
Bahattin M. Baysal ◽  
Frank E. Karasz
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Styrene Sulfonate ◽  
Poly Styrene Sulfonate ◽  
Transition Studies

Enhance the Colloidal Stability of Magnetite Nanoparticles Using Poly(sodium 4-styrene sulfonate) Stabilizers

2014 ◽  
Vol 625 ◽  
pp. 168-171 ◽  
Author(s):  
Qi Hwa Ng ◽  
Jit Kang Lim ◽  
Ahmad Abdul Latif ◽  
Boon Seng Ooi ◽  
Siew Chun Low
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Magnetite Nanoparticles ◽  
Cluster Size ◽  
Environmental Remediation ◽  
Colloidal Stability ◽  
Molar Ratio ◽  
Styrene Sulfonate

The major challenge in assessing the performance of magnetite nanoparticles (MNPs) in removing pollutants from wastewater is the agglomeration of those nanoparticles into a bulky cluster size. In this study, different concentration of poly (sodium 4-styrene sulfonate) (PSS) were coated around the surface of MNPs to increase the particles’ colloidal stability. Both dynamic light scattering (DLS) and thermogravimetric (TGA) analyses have proved the success coating of PSS onto MNPs, whereby the cluster size of the functionalized MNPs were shown notably depends on the applied dosage of PSS. PSS/MNPs functionalization at molar ratio of 6:1 was found to have the smallest cluster size at 148.4 ± 0.22 nm. These results have provided some insight about the particles’ colloidal stability that could be useful for environmental remediation.

Dynamic light scattering from gels in a poor solvent

1978 ◽  
Vol 39 (9) ◽  
pp. 955-960 ◽  
Author(s):  
E. Geissler ◽  
A.M. Hecht
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Poor Solvent

DYNAMIC LIGHT SCATTERING IN LC-440 NEMATIC LIQUID CRYSTAL

2014 ◽  
Vol 73 (11) ◽  
pp. 977-983
Author(s):  
A. P. Fedoryako ◽  
A. I. Kocherzhin ◽  
M. P. Kukhtin ◽  
E. I. Chernyakov
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Nematic Liquid Crystal

Synthesis of Calcium Carbonate Micro Particles using Emulsion Membrane Process Applied for Drug Release Studies

2017 ◽  
Vol 68 (10) ◽  
pp. 2320-2324
Author(s):  
Mariana Mateescu ◽  
Sanda Maria Doncea ◽  
Irina Chican ◽  
Cristina Lavinia Nistor ◽  
Ioneta Codrina Bujanca
Keyword(s):  
Light Scattering ◽  
Calcium Carbonate ◽  
Dynamic Light Scattering ◽  
Liquid Membranes ◽  
Membrane Process ◽  
Emulsion Method ◽  
Micro Particles ◽  
Release Studies ◽  
Emulsion Liquid Membranes ◽  
Span 80

The aim of this work is the synthesis of calcium carbonate (CaCO3) nano and microparticles and their application as biomaterials (vehicles) for the sustained release of doxycycline. CaCO3 micro particles were synthesized by water-in oil (W/O) emulsion method using emulsion liquid membranes with bis (2-ethylhexyl) phosphate (D2EHPA) as carrier, Span 80 as surfactant, and toluene and kerosene as organic solvents. The aqueous phases contained 1 M CaCl2, and 1 M Na2CO3, respectively. The Dynamic Light Scattering (DLS) data showed CaCO3 particles with sizes ranging from around 100 nm to 3500 nm. The CaCO3 particles with the average diameters around 600 nm attained an adsorbtion of doxycycline of maximum 97.9%, and a slow and steady release with a cumulative value of approximative 50% after ten days.

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