Aggregation, Configuration and Particle Size of Lutein Dispersed by Sodium Dodecyl Sulfate in Various Salt Concentrations

1982 ◽  
Vol 46 (9) ◽  
pp. 2217-2222
Author(s):  
Shigeaki Takagi ◽  
Kunio Takeda ◽  
Masahide Shiroishi
Keyword(s):  
Particle Size ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Dodecyl Sulfate

Determination of Particle Size in Latex

1953 ◽  
Vol 26 (2) ◽  
pp. 481-486 ◽  
Author(s):  
E. G. Cockbain
Keyword(s):  
Particle Size ◽  
Sodium Dodecyl Sulfate ◽  
Natural Rubber ◽  
Sodium Dodecyl ◽  
Average Particle ◽  
Particle Sizes ◽  
Sulfate Concentration ◽  
Titration Method ◽  
Dodecyl Sulfate

Abstract The soap titration method of determining average particle sizes in synthetic latexes has been modified so as to make it applicable to natural rubber latexes. The method consists essentially in determining the distribution of an added detergent (sodium dodecyl sulfate) between the rubber and aqueous phases at a pH of approximately 6.0, the total dodecyl sulfate concentration being just sufficient for the formation of micelles in the aqueous phase. The average particle sizes of nine ammoniated latexes have been measured, including centrifuged and electrodecanted concentrates, two clonal field latexes and a sample of latex skim.

scholarly journals Development of Polymer and Surfactant Based Naringenin Nanosuspension for Improvement of Stability, Antioxidant, and Antitumour Activity

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Shadab Md ◽  
Nabil A. Alhakamy ◽  
Sohail Akhter ◽  
Zuhier A. Y. Awan ◽  
Hibah M. Aldawsari ◽  
...  
Keyword(s):  
Particle Size ◽  
Antitumor Activity ◽  
Sodium Dodecyl Sulfate ◽  
Drug Release ◽  
Size Distribution ◽  
Hydroxypropyl Methylcellulose ◽  
Sodium Dodecyl ◽  
Average Particle ◽  
Dodecyl Sulfate

Nanosuspensions are widely reported to enhance the solubility of poorly soluble drugs. In addition to enhancement in solubility, improvement of stability and therapeutic efficacy would be an added advantage. In the present study, premilling and subsequent high-pressure homogenization were carried out to produce naringenin nanosuspension. Hydroxypropyl methylcellulose and sodium dodecyl sulfate were evaluated for their performance as stabilizers under various homogenization cycles. The prepared nanosuspensions were studied for average particle size and size distribution, zeta potential, solubility, drug release, antioxidant activity, and in vitro antitumor activity. It was observed that both hydroxypropyl methylcellulose-stabilized nanosuspension and sodium dodecyl sulfate-stabilized nanosuspension produced an enhancement in physical stability, antioxidant potential, and in vitro cytotoxicity compared with naringenin. Furthermore, hydroxypropyl methylcellulose-stabilized nanosuspension was found to be better than sodium dodecyl sulfate-stabilized nanosuspension in terms of particle size and size distribution, storage stability, and drug release. This study showed that nanosuspension formulations could be a potential strategy for improving dissolution and antitumor activity of naringenin.

DEVELOPMENT OF NANOFLUIDS AS LUBRICANT TO STUDY FRICTION AND WEAR BEHAVIOR OF STAINLESS STEELS

2013 ◽  
Vol 22 ◽  
pp. 664-669 ◽  
Author(s):  
RASHMI RANJAN SAHOO ◽  
SANTU BHATTACHARJEE ◽  
TUHIN DAS
Keyword(s):  
Particle Size ◽  
Sodium Dodecyl Sulfate ◽  
Boron Nitride ◽  
Coefficient Of Friction ◽  
Stainless Steels ◽  
Wear Behavior ◽  
Sodium Dodecyl ◽  
Ammonium Bromide ◽  
Tribological Behaviour ◽  
Dodecyl Sulfate

A number of nanofluids have been prepared to study the effect of lubrication properties of nanofluids on stainless steels taking Kaolin and Boron Nitride (BN) as the lubricant particles and Sodium Dodecyl Sulfate (SDS), Cetyl Trimethyl Ammonium Bromide (CTAB), Sodium Hexa Meta Phosphate (SHMP) as dispersants in the same liquid medium i.e. water. A pin on disc tribometer is being used to access the tribological behaviour of the prepared nanofluids. The particle size of these particle dispersions are examined with a nanoparticle size analyzer. It has been found that the use of dispersants significantly control the particle size and tribological behavior of the nanofluids as for Boron Nitride particle with Sodium Dodecyl Sulfate (SDS) as dispersant has got a very low value of coefficient of friction being equal to 0.142 while without dispersant the value is 0.498. Similarly, in case of Kaolin water with SDS as dispersant the value of coefficient of friction obtained is 0.161 and without dispersant it is 0.333. Sodium Dodecyl Sulfate (SDS) as dispersant has resulted a very low coefficient of friction compared to other dispersants tested even though it doesn’t always assure a least particle size. The role of SDS in yielding the lowest friction has pursued significant attention for further investigation.

Nanospheres Effect of Different Sodium Dodecyl Sulfate Ratios towards Particle Size of Polystyrene Nanosphere

2016 ◽  
Vol 1133 ◽  
pp. 510-514
Author(s):  
Mohd Nasha’ain Nordin ◽  
Nuruzatulifah Asari ◽  
Khairuldin Isha ◽  
Wedianti Suhaldi ◽  
Ahmad Aswad Mahaidin ◽  
...  
Keyword(s):  
Particle Size ◽  
Reaction Time ◽  
Sodium Dodecyl Sulfate ◽  
Emulsion Polymerization ◽  
Surfactant Concentration ◽  
Sodium Dodecyl ◽  
Concentration Effect ◽  
Concentration Increase ◽  
Dodecyl Sulfate

Abstract.Polystyrene (PS) nanospheres were synthesized by emulsion polymerization using 2,2′-Azobis (2-methylpropionitrile) (AIBN) as initiator and Sodium dodecyl sulfate (SDS) act as surfactant. The size and distribution of the PS nanospheres were systematically investigated in terms of surfactant concentration. Effect of the surfactant towards to the particle size is study using SEM, FTIR and XRD. It is found that increase in Sodium dodecyl sulfate (SDS) concentration increase the reaction time thus longer time needed for the formation of the nanosphere. However their properties are comparable to the commercial Polystyrene PS nanosphere.

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