نتایج جستجو برای: dbsa

تعداد نتایج: 77  

Journal: :Journal of colloid and interface science 2013
Sara M Hashmi Abbas Firoozabadi

Asphaltene precipitation occurs in petroleum fluids under certain unfavorable conditions, but can be controlled by tuning composition. Aromatic solvents in large quantities can prevent precipitation entirely and can dissolve already precipitated asphaltenes. Some polymeric surfactants can dissolve asphaltenes when added at much lower concentrations than required by aromatic solvents. Other disp...

Journal: :The American journal of physiology 1999
José Iglesias Vivian Elizabeth Abernethy Zhiyong Wang Wilfred Lieberthal Jason S Koh Jerrold S Levine

We have previously shown that lysophosphatidic acid (LPA), an abundant serum lipid that binds with high affinity to albumin, is a potent survival factor for mouse proximal tubular cells and peritoneal macrophages. We show here that BSA also has potent survival activity independent of bound lipids. Delipidated BSA (dBSA) protected cells from apoptosis induced by FCS withdrawal at concentrations ...

2017
W A Hammed M S Rahman H N M E Mahmud R Yahya K Sulaiman

A soluble poly (n-vinyl carbazole)-polypyrrole (PNVC-Ppy) copolymer was prepared through oxidative chemical polymerization wherein dodecyl benzene sulfonic acid (DBSA) was used as a dopant to facilitate polymer-organic solvent interaction and ammonium persulfate (APS) was used as an oxidant. Compared with undoped PNVC-Ppy, the DBSA-doped PNVC-Ppy copolymer showed higher solubility in some selec...

2009
Subrahmanya Shreepathi Hung Van Hoang Rudolf Holze

Corrosion protection performance of a completely soluble polyaniline-dodecylbenzenesulfonic acid salt (PANI-DBSA) on C45 steel has been studied with electrochemical impedance and potentiodynamic measurements. Chloroform is the most suitable solvent to process the pristine PANI-DBSA because of negligible interaction of the solvent with the polyaniline (PANI) backbone. An anodic shift in the corr...

Journal: :Molecules 2012
Jarmila Vilčáková Robert Moučka Petr Svoboda Markéta Ilčíková Natalia Kazantseva Martina Hřibová Matej Mičušík Mária Omastová

The effect of ionic surfactants and manufacturing methods on the separation and distribution of multi-wall carbon nanotubes (CNTs) in a silicone matrix are investigated. The CNTs are dispersed in an aqueous solution of the anionic surfactant dodecylbenzene sulfonic acid (DBSA), the cationic surfactant cetyltrimethylammonium bromide (CTAB), and in a DBSA/CTAB surfactant mixture. Four types of CN...

Journal: :The European physical journal. E, Soft matter 2003
H Kosonen S Valkama J Ruokolainen M Torkkeli R Serimaa G ten Brinke O Ikkala

We demonstrate that complexation of dodecylbenzenesulphonic acid, DBSA, to a diblock copolymer of polystyrene- block-poly(4-vinylpyridine), PS- block-P4VP, leads to polymeric supramolecules PS- block-P4VP(DBSA)y (y = 1.0, 1.5, and 2.0), which self-organize with a particularly large lamellar periodicity in excess of 1000 A. The structures consist of alternating PS and P4VP(DBSA)y layers, where t...

2017
Zhuoxuan Lu Feng-ying Huang Rong Cao Liming Zhang Guang-hong Tan Nongyue He Jie Huang Guizhen Wang Zhijun Zhang

Transition metal sulfide (TMS) holds great potential in cancer photothermal therapy (PTT) because of the high absorbance in the near-infrared (NIR) region. The short blood circulation time and limited tumor accumulation of TMS-based photothermal agents, however, limit their applications. Herein, we design a novel TMS-based PTT agent, ruthenium sulfide-based nanoclusters (NCs), to overcome the c...

The synthesis of polyaniline doped with dodecylbenzene sulphonic acid (Pani-DBSA) coatings on 310 stainless steel (310 SS) surfaces has been investigated by using the galvanostatic method. The synthesized coatings were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), UV-Visible absorption spectrometry and Scanning Electron Microscopy (SEM...

Journal: :Chemie Ingenieur Technik 2021

Emulsion-enhanced biphasic esterification has proven to be applicable for carboxylic acid recovery from dilute aqueous process streams. The is esterified with 1-octanol in an emulsified regime 4-dodecylbenzenesulfonic (4-DBSA) or Ni(DBSA)2 as catalyst. After phase separation, the laden solvent must regenerated. This study presents a regeneration concept based on reactive distillation transester...

2014
Yashwant Singh Patel Prashant Ku. Chandan Moumita Ghosh Sarita Das

The divisible load model is motivated by divisible load theory, where both communication and computation can be arbitrarily divisible into as many independent partitions as required and facilitates a good approximation for many real-world application systems such as those arising in large physics experiments. Scheduling an application with divisible load in data grid is significantly important ...

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