Asphaltene destabilization in the presence of dodecylbenzene sulfonic acid and dodecylphenol

Fuel ◽  
2021 ◽  
Vol 304 ◽  
pp. 121320
Author(s):  
Mitchell Huffman ◽  
H. Scott Fogler
Keyword(s):  
Sulfonic Acid ◽  
Dodecylbenzene Sulfonic Acid

Effectiveness of Commercial Disinfectants for Inactivating Hepatitis A Virus on Agri-Food Surfaces

2003 ◽  
Vol 66 (1) ◽  
pp. 115-119 ◽  
Author(s):  
J. JEAN ◽  
J.-F. VACHON ◽  
O. MORONI ◽  
A. DARVEAU ◽  
I. KUKAVICA-IBRULJ ◽  
...  
Keyword(s):  
Active Ingredient ◽  
Quaternary Ammonium ◽  
High Density Polyethylene ◽  
Contact Time ◽  
Sulfonic Acid ◽  
Hepatitis A ◽  
Incubation Temperature ◽  
Hepatitis A Virus ◽  
Dodecylbenzene Sulfonic Acid ◽  
High Concentrations

Six commercial disinfectants were tested for their efficacy in inactivating hepatitis A virus in solution or attached to agri-food surfaces. Disinfectant I contains 10% quaternary ammonium plus 5% glutaraldehyde;disinfectant II contains 12% sodium hypochlorite; disinfectant III contains 2.9% dodecylbenzene sulfonic acid plus 16% phosphoric acid; disinfectant IV contains 10% quaternary ammonium; disinfectant V contains 2% iodide; and disinfectant VI contains 2% stabilized chlorine dioxide. Among these, disinfectants I and II were shown to be the most effective in inactivating hepatitis A virus in solution. The efficacy of these disinfectants was further tested against hepatitis A virus attached to common agri-food surfaces, including polyvinyl chlorine, high-density polyethylene, aluminum, stainless steel, and copper. Disinfectant II was shown to be the most effective, with a maximum inactivation level of about 3 log10. The inactivation efficacy was shown to be affected by the concentration of the active ingredient, the contact time between the disinfectant and the contaminated surfaces, and the incubation temperature. In general, hepatitis A virus was shown to be highly resistant to most disinfectants tested, and high concentrations of active ingredient were needed to achieve acceptable inactivation levels.

scholarly journals In-situ polymerization of EDOT in water/methanol with different DBSA contents

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Chia-Fu Chen ◽  
Chi-an Dai ◽  
Wen-Yen Chiu
Keyword(s):  
Spin Coating ◽  
Sulfonic Acid ◽  
In Situ Polymerization ◽  
Smooth Surfaces ◽  
Water Mixture ◽  
Degradation Temperature ◽  
Morphology Of Films ◽  
Dodecylbenzene Sulfonic Acid

AbstractIn this work, poly(3-ethylenedioxythiophene) (PEDOT) was synthesized on glass by spin coating for 10 seconds at 500 rpm and polymerization was carried out in an oven at 110°C for 10 min. Methanol and water mixture were used as the solvent and dodecylbenzene sulfonic acid (DBSA) as the surfactant. The conductivities of films were measured and their relationship with different solvent or various surfactant contents were discussed. The morphology of films was observed by SEM, and PEDOT synthesized in methanol-rich solvents or with less DBSA content had more smooth surfaces, showed lower degradation temperature (by TGA). Also, PEDOT synthesized in methanol-rich solvents or with less DBSA were doped better, as observed by UV-Vis spectra.

Hydrogen Bonding Effects on the Electrical Properties and Phase Morphology of Polyaniline Blends

2005 ◽  
Vol 13 (4) ◽  
pp. 415-423
Author(s):  
Pan Wei ◽  
Yang Shenglin ◽  
Li Guang ◽  
Jiang Jianming
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Bonding ◽  
Electrical Properties ◽  
Cluster Size ◽  
Sulfonic Acid ◽  
Carbonyl Groups ◽  
Solution Cast ◽  
Doped Polyaniline ◽  
Dodecylbenzene Sulfonic Acid ◽  
Polyacrylonitrile Copolymer

Blends of dodecylbenzene sulfonic acid-doped polyaniline (PANI-DBSA) with either polyacrylonitrile copolymer (PAN) or polystyrene (PS) were solution cast. The investigation focused on the interaction between the components, the morphology and the resulting electrical conductivity of blends. The results showed that with the same PANI-DBSA content the conductivity of PANI-DBSA/PAN was higher than that of PANI-DBSA/PS. PANI-DBSA was dispersed uniformly in the PAN matrix and its cluster size was rather smaller than in the PS matrix. This is attributed to hydrogen bonding between the carbonyl groups in PAN and the imine groups in PANI, which should lead to better compatibility between PANI-DBSA and PAN.

scholarly journals Mesomorphic Phase Behavior in Comb-like Polymer- Surfactant Complex

e-Polymers ◽  
2006 ◽  
Vol 6 (1) ◽  
Author(s):  
Isamu Akiba ◽  
Hiroyasu Masunaga ◽  
Shouichi Murata ◽  
Kanako Sasaki
Keyword(s):  
Optical Anisotropy ◽  
Sulfonic Acid ◽  
Room Temperature ◽  
Ethyl Acrylate ◽  
Lamellar Phase ◽  
Surfactant Complex ◽  
Lamellar Morphology ◽  
Dodecylbenzene Sulfonic Acid ◽  
The Individual ◽  
Polymer Surfactant

AbstractIt was found that a comb-like complex consisting of poly[2-(N,Ndimethylamino) ethyl acrylate] (PDAEA) and p-dodecylbenzene sulfonic acid (DBSA) formed mesomorphically ordered lamellar phase at room temperature where PDAEA and DBSA are in molten state. The lamellar phase shows optical anisotropy, although the individual components are always isotropic. In addition it is found that the optical anisotropy of the PDAEA-DBSA complex completely disappears with accompanying order-disorder transition of the lamellar morphology with elevating temperature.

scholarly journals Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors

Micromachines ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 115 ◽  
Author(s):  
Nomxolisi R. Dywili ◽  
Afroditi Ntziouni ◽  
Chinwe Ikpo ◽  
Miranda Ndipingwi ◽  
Ntuthuko W. Hlongwa ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
High Resolution ◽  
Specific Capacitance ◽  
Sulfonic Acid ◽  
High Performance ◽  
Pt Nanoparticles ◽  
Metal Nanoparticle ◽  
Vibration Band ◽  
Dodecylbenzene Sulfonic Acid

Graphene oxide (GO) decorated with silver (Ag), copper (Cu) or platinum (Pt) nanoparticles that are anchored on dodecylbenzene sulfonic acid (DBSA)-doped polyaniline (PANI) were prepared by a simple one-step method and applied as novel materials for high performance supercapacitors. High-resolution transmission electron microscopy (HRTEM) and high-resolution scanning electron microscopy (HRSEM) analyses revealed that a metal-decorated polymer matrix is embedded within the GO sheet. This caused the M/DBSA–PANI (M = Ag, Cu or Pt) particles to adsorb on the surface of the GO sheets, appearing as aggregated dark regions in the HRSEM images. The Fourier transform infrared (FTIR) spectroscopy studies revealed that GO was successfully produced and decorated with Ag, Cu or Pt nanoparticles anchored on DBSA–PANI. This was confirmed by the appearance of the GO signature epoxy C–O vibration band at 1040 cm−1 (which decreased upon the introduction of metal nanoparticle) and the PANI characteristic N–H stretching vibration band at 3144 cm−1 present only in the GO/M/DBSA–PANI systems. The composites were tested for their suitability as supercapacitor materials; and specific capacitance values of 206.4, 192.8 and 227.2 F·g−1 were determined for GO/Ag/DBSA–PANI, GO/Cu/DBSA–PANI and GO/Pt/DBSA–PANI, respectively. The GO/Pt/DBSA–PANI electrode exhibited the best specific capacitance value of the three electrodes and also had twice the specific capacitance value reported for Graphene/MnO2//ACN (113.5 F·g−1). This makes GO/Pt/DBSA–PANI a very promising organic supercapacitor material.

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