Synthesis,characterization of 1-butyl-4-methylpyridinium lauryl sulfate and its inclusion phenomenon with β-cyclodextrin for enhanced applications

2018 ◽  
Vol 548 ◽  
pp. 206-217 ◽  
Author(s):  
Raja Ghosh ◽  
Deepak Ekka ◽  
Biplab Rajbanshi ◽  
Ananya Yasmin ◽  
Mahendra Nath Roy
Keyword(s):  
Lauryl Sulfate ◽  
Inclusion Phenomenon

scholarly journals Characterization of hydrochlorothiazide in solid formulations

2015 ◽  
Vol 30 (S1) ◽  
pp. S127-S130
Author(s):  
Simone T. B. de Salvi ◽  
Diego Luiz Tita ◽  
Carlos de O. Paiva-Santos ◽  
Selma G. Antonio
Keyword(s):  
Rietveld Method ◽  
Package Insert ◽  
Polymorphic Form ◽  
Crystalline Form ◽  
Active Principle ◽  
Lauryl Sulfate ◽  
X Ray ◽  
Lactose Monohydrate ◽  
Solid State Characterization

Hydrochlorothiazide (HCTZ) is a diuretic used for the treatment of blood pressure (hypertension). HCTZ has two anhydrous polymorphs denoted as Forms I and II. Aiming at solid-state characterization, X-ray powder diffraction (XRPD) is known to be a powerful technique which has been successfully applied in investigating polymorphism in medicines. In this work, three tablets of HCTZ (a reference and two generic) were analyzed. The data were collected using Rigaku RINT2000 diffractometer copper rotate anode. The Rietveld method (RM) was applied for the characterization of HCTZ polymorphic form. For the crystalline excipients where the crystal structure is known, their phases were identified by the RM either. The results showed that all the tablets exhibit Form I of HCTZ, while the excipient lactose monohydrate is found to exhibit the crystalline form. One of the generics is also found to exhibit the excipient sodium lauryl sulfate (SLS) in the crystalline form. Therefore, the RM and XRPD are an efficient methodology for characterization of the crystalline Form I of the active principle of HCTZ and crystalline excipients lactose monohydrate and SLS in solid formulations. It is also interesting to observe excipients not described in the package insert of the medicament.

Controlled synthesis and characterization of nanohydrogels formed from copolymer (2-acrylamido-2-methylpropane sulfonic acid/acrylamide)

e-Polymers ◽  
2016 ◽  
Vol 16 (3) ◽  
pp. 207-215 ◽  
Author(s):  
Ahmed Awadallah-F ◽  
Soad Y. Abd El-Wahab ◽  
H.I. Al-Shafey
Keyword(s):  
Electron Microscopy ◽  
Sulfonic Acid ◽  
Controlled Synthesis ◽  
Particle Sizes ◽  
Lauryl Sulfate ◽  
X Ray ◽  
Molar Ratios ◽  
Transmission Electron ◽  
Γ Ray

AbstractNanohydrogels were prepared from copolymer 2-acrylamido-2-methylpropane sulfonic acid (AMPS)/acrylamide (AAm) in the presence of sodium lauryl sulfate (SLS) followed by γ-ray exposure. Different molar ratios of AMPS to AAm, 100:0 to 0:100, were investigated. The particle sizes of nanohydrogels were examined by high-resolution transmission electron microscopy (HR-TEM). The effects of different comonomer composition and pH on swelling (%) and gelation (%) were studied. The characterization of nanohydrogels was performed by Fourier transform infrared (FTIR) spectroscopy, energy dispersion X-ray (EDX), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The results indicate that particle sizes ranged from ~9.5 to ~39 nm.

Physicochemical characterization of tacrolimus-loaded solid dispersion with sodium carboxylmethyl cellulose and sodium lauryl sulfate

2009 ◽  
Vol 32 (6) ◽  
pp. 893-898 ◽  
Author(s):  
Young-Joon Park ◽  
Dong-Sung Ryu ◽  
Dong Xun Li ◽  
Qi Zhe Quan ◽  
Dong Hoon Oh ◽  
...  
Keyword(s):  
Solid Dispersion ◽  
Sodium Lauryl Sulfate ◽  
Physicochemical Characterization ◽  
Lauryl Sulfate

scholarly journals Kajian Pustaka Karakterisasi Perekat Polivinil Asetat Berbasis Air dengan Variabel Surfaktan

KOVALEN ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 23-29
Author(s):  
Rony Pasonang Sihombing ◽  
Dieni Nurul Fathiyyah ◽  
Nanda Liant Kumara ◽  
Agustinus Ngatin
Keyword(s):  
Particle Size ◽  
Surfactant Concentration ◽  
Polyvinyl Acetate ◽  
Polymerization Process ◽  
Lauryl Sulfate ◽  
Literature Study ◽  
Optimal Value ◽  
Water Based ◽  
Specific Particle

Polyvinyl acetate (PVAc) is an applicative polymer used as an adhesive material for one to another. These polymers can be synthesized through an emulsion polymerization process. In the industrial world, the process of making adhesive still involves environmentally unfriendly organic compounds containing xylene, benzene, and toluene. Therefore, water-based adhesive was introduced as an alternative to the PVAc synthesis solution. The aim of this literature review is to identify the type of surfactants used and analyze the PVAc characterization. This literature study focuses on the characterization of water-based PVAc with non-ionic nonylphenol (NP) surfactants including: NP-06, NP-10, NP 10 + 30, NP-30 and NP-40. Another surfactant used in this literature study is anionic surfactant Sodium Lauryl Sulfate (SLS) in units of Critical Micelle Concentration (CMC) including 1 CMC, 3 CMC, 5 CMC, 10 CMC, and 15 CMC. The result is a similarity in phenomena between the two types of surfactants. There is an increase in viscosity and a decrease in the value of the particle size as the surfactant increasing concentration used. However, in terms of the particle size, there is an optimal value where the specific NP surfactant concentration produces specific particle size with grit and at the specific SLS surfactant concentration produces relatively similar particle size.

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

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