FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995758220> ?p ?o ?g. }

• W1995758220 endingPage "441" @default.
• W1995758220 startingPage "435" @default.
• W1995758220 abstract "Experiments on the kinetics of heteroaggregation between oppositely charged particles, using both dynamic light scattering and turbidity methods, are reported. The negatively charged particles were cross-linked poly(N-isopropylacrylamide) [PNIPAM] microgel particles, prepared using a carboxylic-acid-based initiator; these particles are swollen at room temperature. The positive particles were poly(4-vinylpyridine) [P4VP] particles, prepared using an amidinium-based initiator; such particles do not respond to temperature changes but do swell below pH ∼4, where the pyridine moieties become protonated. As expected, the rate of heteroaggregation was shown to be largely independent of added salt concentration (up to ∼20 mM), for a variety of alkali metal chlorides (MCl, where M = Li, Na, K, or Rb). However, an unexpected, significant decrease in the aggregation rate was observed at certain specific sodium chloride concentrations (typically at ∼1 and also ∼4 mM). Similar effects were not seen with the other alkali metal chloride salts. This strange effect was eventually attributed to the fact that the net charge on the positively charged P4VP particles had been reduced by the adsorption of (anionic) silicate species leached from the glassware container. Sodium silicates are known to be significantly more soluble than those of the other alkali metal ions, particularly at high pH. Moreover, P4VP particles dispersed in water, ostensibly at neutral pH, do buffer the aqueous medium to pH values around 9 or higher. This mechanism was confirmed by determining the electrophoretic mobility of the P4VP particles as a function of pH in the presence of the various alkali metal chloride salts. The mobility remained positive in 1 mM salt solutions over the pH range 3 to 11 for all the salts, except for sodium chloride; in that case the mobility reversed sign at alkaline pH values. A similar effect was observed for a cationic polystyrene latex sample, prepared with the same amidinium-based initiator. These experiments demonstrate the importance of soluble silicates, leached from glass storage vessels, particularly in the presence of sodium ions. Needless to say, the “anomalous” effects disappeared when plastic storage vessels were used in place of the glass ones." @default.
• W1995758220 created "2016-06-24" @default.
• W1995758220 creator A5007339388 @default.
• W1995758220 creator A5062147403 @default.
• W1995758220 date "2004-05-01" @default.
• W1995758220 modified "2023-09-28" @default.
• W1995758220 title "Some anomalous effects of sodium ions on the electrophoretic mobility and heteroaggregation of microgel particles" @default.
• W1995758220 cites W1555779344 @default.
• W1995758220 cites W1976507470 @default.
• W1995758220 cites W1989554368 @default.
• W1995758220 cites W1994033579 @default.
• W1995758220 cites W2000978239 @default.
• W1995758220 cites W2031046657 @default.
• W1995758220 cites W2035819916 @default.
• W1995758220 cites W2059942659 @default.
• W1995758220 cites W2063393943 @default.
• W1995758220 cites W2073528628 @default.
• W1995758220 cites W2093993521 @default.
• W1995758220 cites W2126397529 @default.
• W1995758220 cites W2131621038 @default.
• W1995758220 cites W2143242022 @default.
• W1995758220 cites W2913026327 @default.
• W1995758220 doi "https://doi.org/10.1016/j.jcis.2004.02.049" @default.
• W1995758220 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15082378" @default.
• W1995758220 hasPublicationYear "2004" @default.
• W1995758220 type Work @default.
• W1995758220 sameAs 1995758220 @default.
• W1995758220 citedByCount "11" @default.
• W1995758220 countsByYear W19957582202012 @default.
• W1995758220 countsByYear W19957582202013 @default.
• W1995758220 crossrefType "journal-article" @default.
• W1995758220 hasAuthorship W1995758220A5007339388 @default.
• W1995758220 hasAuthorship W1995758220A5062147403 @default.
• W1995758220 hasConcept C127413603 @default.
• W1995758220 hasConcept C145148216 @default.
• W1995758220 hasConcept C14631669 @default.
• W1995758220 hasConcept C150394285 @default.
• W1995758220 hasConcept C155672457 @default.
• W1995758220 hasConcept C178790620 @default.
• W1995758220 hasConcept C179104552 @default.
• W1995758220 hasConcept C184651966 @default.
• W1995758220 hasConcept C185592680 @default.
• W1995758220 hasConcept C198091228 @default.
• W1995758220 hasConcept C199164860 @default.
• W1995758220 hasConcept C2776371256 @default.
• W1995758220 hasConcept C2778695967 @default.
• W1995758220 hasConcept C30095370 @default.
• W1995758220 hasConcept C42360764 @default.
• W1995758220 hasConcept C537181965 @default.
• W1995758220 hasConcept C544153396 @default.
• W1995758220 hasConceptScore W1995758220C127413603 @default.
• W1995758220 hasConceptScore W1995758220C145148216 @default.
• W1995758220 hasConceptScore W1995758220C14631669 @default.
• W1995758220 hasConceptScore W1995758220C150394285 @default.
• W1995758220 hasConceptScore W1995758220C155672457 @default.
• W1995758220 hasConceptScore W1995758220C178790620 @default.
• W1995758220 hasConceptScore W1995758220C179104552 @default.
• W1995758220 hasConceptScore W1995758220C184651966 @default.
• W1995758220 hasConceptScore W1995758220C185592680 @default.
• W1995758220 hasConceptScore W1995758220C198091228 @default.
• W1995758220 hasConceptScore W1995758220C199164860 @default.
• W1995758220 hasConceptScore W1995758220C2776371256 @default.
• W1995758220 hasConceptScore W1995758220C2778695967 @default.
• W1995758220 hasConceptScore W1995758220C30095370 @default.
• W1995758220 hasConceptScore W1995758220C42360764 @default.
• W1995758220 hasConceptScore W1995758220C537181965 @default.
• W1995758220 hasConceptScore W1995758220C544153396 @default.
• W1995758220 hasIssue "2" @default.
• W1995758220 hasLocation W19957582201 @default.
• W1995758220 hasLocation W19957582202 @default.
• W1995758220 hasOpenAccess W1995758220 @default.
• W1995758220 hasPrimaryLocation W19957582201 @default.
• W1995758220 hasRelatedWork W145959071 @default.
• W1995758220 hasRelatedWork W2032902557 @default.
• W1995758220 hasRelatedWork W2074233838 @default.
• W1995758220 hasRelatedWork W2087593635 @default.
• W1995758220 hasRelatedWork W2144459115 @default.
• W1995758220 hasRelatedWork W2178806065 @default.
• W1995758220 hasRelatedWork W2261336741 @default.
• W1995758220 hasRelatedWork W2376424761 @default.
• W1995758220 hasRelatedWork W2388719838 @default.
• W1995758220 hasRelatedWork W4308363008 @default.
• W1995758220 hasVolume "273" @default.
• W1995758220 isParatext "false" @default.
• W1995758220 isRetracted "false" @default.
• W1995758220 magId "1995758220" @default.
• W1995758220 workType "article" @default.