Results 21 to 30 of about 88,877 (298)

Ester-based surfactants: Are they stable enough? [PDF]

, 2023
Surfactants with an ester bond connecting the polar headgroup and the hydrophobic tail are common. They are easy to synthesize, they can often be made from natural raw materials and their biodegradation profile is generally good, partly due to lipase or ...
Maria Stjerndahl, Holmberg, Krister,, Krister Holmberg, Lundberg, Dan,, Holmberg, Krister, Stjerndahl, Maria, Stjerndahl, Maria,, Dan Lundberg, Lundberg, Dan   +8 more
core   +1 more source

Conductometric study of sodium dodecyl sulfate - nonionic surfactant (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) mixed micelles in aqueous solution [PDF]

Hemijska Industrija, 2012
The present study is concerned with the determination of the critical micelle concentration (cmc) of mixed micelles of sodium dodecyl sulfate with one of five nonionic surfactants (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) from ...
Ćirin Dejan M., Poša Mihalj M., Krstonošić Veljko S., Milanović Maja Lj.   +3 more
doaj   +1 more source

Wetting of Coal by Nonionic Surfactant and Mixtures of Nonionic and Anionic Surfactants [PDF]

Bulletin of the Chemical Society of Japan, 1983
Abstract The rates of wetting of coals with various carbon contents by aqueous nonionic surfactants and mixtures of nonionic and anionic surfactants were examined. It was found that the wetting rate of each coal decreased with an increase of the length of oxyethylene chain in the nonionic surfactant.
Kunio Esumi, Kenjiro Meguro, Hidemasa Honda   +2 more
openaire   +1 more source

Structure Identification of Adsorbed Anionic–Nonionic Binary Surfactant Layers Based on Interfacial Shear Rheology Studies and Surface Tension Isotherms

Molecules, 2023
Mixtures of anionic sodium oleate (NaOl) and nonionic ethoxylated or alkoxylated surfactants improve the selective separation of magnesite particles from mineral ores during the process of flotation.
Ourania Oikonomidou, Margaritis Kostoglou, Thodoris Karapantsios   +2 more
doaj   +1 more source

The influence of surfactant structure on the dyeing of polyamide knitting with acid dyes [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2018
The influence of nonionic and anionic surfactants on the dyeing kinetics of polyamide 6 knitting was studied in this work. The influence of surfactants on the dyeing process is presented by determining the kinetic and thermodynamic parameters of dyeing ...
Ristić Nebojša N., Dodić Ivica R., Ristić Ivanka P.   +2 more
doaj   +1 more source

Effect of Surfactant HLB Value on Enzymatic Hydrolysis of Chitosan

ChemEngineering, 2022
Nonionic surfactants are reported as being able to enhance enzyme stability and increase the conversion of enzymatic reactions. Surfactant-assisted enzymatic hydrolysis conversion is affected by surfactant HLB values. This work investigated the influence
Nur Rokhati, Tutuk Djoko Kusworo, Aji Prasetyaningrum, Nur ‘Aini Hamada, Dani Puji Utomo, Teguh Riyanto   +5 more
doaj   +1 more source

Interaction of nonionic surfactant AEO9 with ionic surfactants [PDF]

Journal of Zhejiang University-SCIENCE B, 2005
The interaction in two mixtures of a nonionic surfactant AEO9 (C12H25O(CH2CH2O)9H) and different ionic surfactants was investigated. The two mixtures were AEO9/sodium dodecyl sulfate (SDS) and AEO9/cetyltrimethylammonium bromide (CTAB) at molar fraction of AEO9, alpha(AEO9) The surface properties of the surfactants, critical micelle concentration (CMC),
Zhi-Guo, Zhang, Hong, Yin
openaire   +2 more sources

A conductometric investigation of hydroxypropylmethyl cellulose/sodium dodecyl sulfate/nonionic surfactant systems [PDF]

Journal of the Serbian Chemical Society, 2014
Surfactant mixtures are very often used in various cosmetic and pharmaceutical products because they commonly act in synergism and provide more favorable properties than the single surfactants.
Petrović Lidija B., Sovilj Verica J., Milanović Jadranka L., Katona Jaroslav M.   +3 more
doaj   +1 more source

Aktivitas enzim lipase alkali dari bakteri dalam surfaktan

Majalah Kulit, Karet, dan Plastik, 1999
Activity and stability of alkaline lipase from bacteria (strain AS, KB and SP) were studied in containing of surfactants at 0,05% and 0,10%. The survactanswere used in research, these were consisted of four anionic surfactants (cetyl trimethyl ammonium ...
V. Sri Pertiwi Rumiyati, Retno Indrati
doaj   +1 more source

Potential of Palm Kernel Alkanolamide Surfactant for Enhancing Oil Recovery from Sandstone Reservoir Rocks

Environment and Natural Resources Journal, 2020
The interest in using benign surfactants has been steadily increasing in the context of enhanced oil recovery (EOR). Palmkernel alkanolamide surfactant (PKA), a nonionic surfactant synthesized from palm kernel oil, was preliminarily ...
Parichat Traiwiriyawong, Suratsawadee Kungsanant   +1 more
doaj   +1 more source