Results 21 to 30 of about 11,637 (219)
Heliyon, 2022 The research of sulfonated eugenol-allyleugenol copolymer (SPEAE) based membrane for fuel cell from eugenol derivate had been conducted. First, eugenol was reacted with various weights of allyl eugenol to form eugenol-allyleugenol copolymer (PEAE ...
Ngadiwiyana +4 more
doaj +1 more source
Determination of Sulfonation Conditions of HAB as a By-product of Linear Alkylbenzene Production [PDF]
Journal of Petroleum Science and Technology, 2015 Heavy alkylated benzene (HAB), which is a by-product in linear alkylbenzene (LAB) production by UOP process, is separated by distillation from LAB and consists of a range of components such as polyalkylbenzenes, diphenylalkanes, alkyl tetralins, and ...
Amir Nasser Ahmadi +2 more
doaj +1 more source
Synthesis and characterization of sulfonated poly(ether imide) with higher thermal stability and effect on CO2, N2, and O2 permeabilities [PDF]
Materials Research, 2014 An experimental design in different reaction conditions was applied to modify poly(ether imide), PEI, by sulfonation using acetyl sulfate. Higher temperatures and reaction times led to higher ion exchange capacity.
Michelle S. V. Chã +5 more
doaj +1 more source
Sulfonated Poly(ether ether ketone) and Organically Modified Montmorillonite Nanocomposite Membranes for Direct Methanol Fuel Cell [PDF]
علوم و تکنولوژی پلیمر, 2022 Hypothesis: The modification of aromatic polymers, such as poly(ether ether ketone) (PEEK), by sulfonation modification, can result in fabricating polyelectrolyte membranes (PEMs) as the alternatives to Nafion for direct methanol fuel cell (DMFC ...
Mahdi Tohidian +5 more
doaj +1 more source
Chemically modified polysulfones for molecular imprinting. Synthesis and complexation with a fluorescent model template [PDF]
, 2013 Polysulfone (PSU) was chemically modified to prepare new molecular imprinted membranes (MIMs). Several amounts of amine and sulfonyl groups were introduced into the PSU chemical structure in order to create interactions with acid or base templates, such ...
Fery-Forgues, Suzanne +5 more
core +6 more sources
Functionalized graphene/polystyrene composite, green synthesis and characterization
Scientific Reports, 2022 A composite of sulfonated waste polystyrene (SWPS) and graphene oxide was synthetized by an inverse coprecipitation in-situ compound technology. Polystyrene (PS) has a wide range of applications due to its high mechanical property.
Rania Farouq
doaj +1 more source
Preparation and properties of a composite charged membrane [PDF]
, 1982 In order to develop a low pressure desalination membrane with fixed ionic charges, we made use of the normally unwanted crosslinking tendency in preparing the polyelectrolyte poly(styrenesulfonate) by sulfonation of polystyrene.
Boer, R. de +3 more
core +7 more sources
Membranes, 2023 Conventional drug delivery has its share of shortcomings, especially its rapid drug release with a relatively short duration of therapeutic drug concentrations, even in topical applications. Prolonged drug release can be effectively achieved by modifying
Himabindu Padinjarathil +6 more
doaj +1 more source
New Determination Method for Sulfonation Degree of Phthalic Anhydride by RP-HPLC [PDF]
Journal of Chromatographic Science, 2013 A novel method was developed to monitor the reaction process and evaluate the sulfonation level in the sulfonation of phthalic anhydride by reversed-phase high-performance liquid chromatography (RP-HPLC). The product peak was identified in chromatograms through product analysis and by comparing its retention time with that of standard compounds.
Lijun, Zhu +5 more
openaire +2 more sources
Biochar, 2023 In the last few decades, sulfonated carbon materials have garnered significant attention as Brønsted solid acid catalysts. The sulfonation process and catalytic activity of sulfonated biochar can be influenced by the aromaticity and degree of ...
Qianqian Xie +5 more
doaj +1 more source