Matches in SemOpenAlex for { <https://semopenalex.org/work/W4252207652> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W4252207652 endingPage "49" @default.
- W4252207652 startingPage "41" @default.
- W4252207652 abstract "The propagation rate coefficient, kp, of methacrylic acid (MAA) in aqueous solution is strongly dependent on monomer concentration.[1–3] Pulsed laser polymerization (PLP) at 25 °C and ambient pressure in conjunction with polymer analysis via size-exclusion-chromatography (SEC) was used to study whether kp also depends on monomer conversion. As the applicability of the PLP-SEC method is restricted to polymerization up to a few per cent of monomer conversion, situations of higher monomer-to-polymer conversion were achieved by adding to the MAA solution either (i) commercially available high-molecular-weight poly(MAA) or (ii) iso-butyric acid (IBA), which serves as a model component for an associated polymer with chain length unity. Within these experiments, the overall carboxylic acid concentration has been kept constant at 20 wt.-%. Under these conditions, kp of MAA turns out to be independent of the relative amounts of MAA and IBA, at least up to MAA:IBA ratios of 1:3, whereas kp increases by 60 per cent upon replacing half of the MAA content by poly(MAA), which situation corresponds to about 50 per cent monomer conversion in MAA polymerizations with initial MAA contents of 20 wt.-%. This kp value for 50 per cent conversion is close to the one obtained for PLP-SEC experiments at initial MAA concentrations of 10 wt.-%. The presence of poly(MAA) thus does not affect kp, whereas the IBA content has a similar effect on kp as has MAA concentration. The behaviour is understood as a consequence of IBA becoming part of the solvent environment at the radical site within the macroradical coil, whereas addition of poly(MAA) does not affect this intra-coil environment. This finding bears important consequences for the modeling of MAA polymerizations carried out at different initial MAA concentrations and up to different degrees of monomer conversion." @default.
- W4252207652 created "2022-05-12" @default.
- W4252207652 creator A5029398544 @default.
- W4252207652 creator A5048763238 @default.
- W4252207652 creator A5055116080 @default.
- W4252207652 creator A5087931629 @default.
- W4252207652 creator A5088832793 @default.
- W4252207652 date "2007-04-13" @default.
- W4252207652 modified "2023-09-25" @default.
- W4252207652 title "Propagation Rate Coefficient of Non-ionized Methacrylic Acid Radical Polymerization in Aqueous Solution. The Effect of Monomer Conversion" @default.
- W4252207652 cites W1549034645 @default.
- W4252207652 cites W1965765385 @default.
- W4252207652 cites W1974488712 @default.
- W4252207652 cites W1981607600 @default.
- W4252207652 cites W1992062454 @default.
- W4252207652 cites W1998204511 @default.
- W4252207652 cites W2005353004 @default.
- W4252207652 cites W2013112459 @default.
- W4252207652 cites W2048896155 @default.
- W4252207652 cites W2054562727 @default.
- W4252207652 cites W2080364428 @default.
- W4252207652 cites W2151359378 @default.
- W4252207652 cites W4236391708 @default.
- W4252207652 cites W4238734590 @default.
- W4252207652 doi "https://doi.org/10.1002/9783527610860.ch5" @default.
- W4252207652 hasPublicationYear "2007" @default.
- W4252207652 type Work @default.
- W4252207652 citedByCount "1" @default.
- W4252207652 countsByYear W42522076522021 @default.
- W4252207652 crossrefType "other" @default.
- W4252207652 hasAuthorship W4252207652A5029398544 @default.
- W4252207652 hasAuthorship W4252207652A5048763238 @default.
- W4252207652 hasAuthorship W4252207652A5055116080 @default.
- W4252207652 hasAuthorship W4252207652A5087931629 @default.
- W4252207652 hasAuthorship W4252207652A5088832793 @default.
- W4252207652 hasConcept C111998727 @default.
- W4252207652 hasConcept C166940927 @default.
- W4252207652 hasConcept C178790620 @default.
- W4252207652 hasConcept C184651966 @default.
- W4252207652 hasConcept C185592680 @default.
- W4252207652 hasConcept C188027245 @default.
- W4252207652 hasConcept C2775968528 @default.
- W4252207652 hasConcept C2776181106 @default.
- W4252207652 hasConcept C44228677 @default.
- W4252207652 hasConcept C521977710 @default.
- W4252207652 hasConcept C53856295 @default.
- W4252207652 hasConceptScore W4252207652C111998727 @default.
- W4252207652 hasConceptScore W4252207652C166940927 @default.
- W4252207652 hasConceptScore W4252207652C178790620 @default.
- W4252207652 hasConceptScore W4252207652C184651966 @default.
- W4252207652 hasConceptScore W4252207652C185592680 @default.
- W4252207652 hasConceptScore W4252207652C188027245 @default.
- W4252207652 hasConceptScore W4252207652C2775968528 @default.
- W4252207652 hasConceptScore W4252207652C2776181106 @default.
- W4252207652 hasConceptScore W4252207652C44228677 @default.
- W4252207652 hasConceptScore W4252207652C521977710 @default.
- W4252207652 hasConceptScore W4252207652C53856295 @default.
- W4252207652 hasLocation W42522076521 @default.
- W4252207652 hasOpenAccess W4252207652 @default.
- W4252207652 hasPrimaryLocation W42522076521 @default.
- W4252207652 hasRelatedWork W1992348925 @default.
- W4252207652 hasRelatedWork W2003519501 @default.
- W4252207652 hasRelatedWork W2017794493 @default.
- W4252207652 hasRelatedWork W2043850865 @default.
- W4252207652 hasRelatedWork W2065286556 @default.
- W4252207652 hasRelatedWork W2069589243 @default.
- W4252207652 hasRelatedWork W2076394818 @default.
- W4252207652 hasRelatedWork W2086407117 @default.
- W4252207652 hasRelatedWork W2094321917 @default.
- W4252207652 hasRelatedWork W2140824007 @default.
- W4252207652 isParatext "false" @default.
- W4252207652 isRetracted "false" @default.
- W4252207652 workType "other" @default.