Matches in SemOpenAlex for { <https://semopenalex.org/work/W4244682714> ?p ?o ?g. }
Showing items 1 to 66 of
66
with 100 items per page.
- W4244682714 endingPage "1987" @default.
- W4244682714 startingPage "1981" @default.
- W4244682714 abstract "The polymerization of methyl methacrylate (MMA) and styrene (St) has been studied using 4-[diphenyl(trimethylsilyl)methyl]benzophenone 1 as photoinitiator. The polymerization follows a free radical mechanism; the polymerization rate increases linearly with the monomer concentration and was found to be proportional to the 0.33 and 1.40 power of the photoinitiator and the monomer (MMA) concentration, respectively. The overall activation energy in the case of MMA photopolymerization was calculated to be 25.0 kJ/mol. From 1H NMR studies it is concluded that the obtained polymers contain two different trimethylsilyl moieties, one at the head and the other at the tail of the polymer chain, showing primary termination reactions even at low initiator concentrations. The p-benzoyltrityl radical 1· is incorporated into the polymer chain to a very small extent, acting as a scavenger. This is also concluded by laser flash photolysis (LFP) and ESR spectroscopy measurements. A “living” character of the polymerization was observed only at very low initiator concentrations. The triplet state (31*) of the initiator was quenched by styrene, reducing its efficiency. The rate constant kq of the quenching process of 31* was measured by LFP (kq = 3.1 · 109 M−1 · S−1). The triplet state and the photodissociation efficiency of the initiator is unaffected by MMA at various concentrations." @default.
- W4244682714 created "2022-05-12" @default.
- W4244682714 creator A5047974735 @default.
- W4244682714 creator A5051417622 @default.
- W4244682714 creator A5052021100 @default.
- W4244682714 date "1998-09-01" @default.
- W4244682714 modified "2023-09-26" @default.
- W4244682714 title "4-[Diphenyl(trimethylsilyl)methyl]benzophenone as initiator in the photopolymerization of methyl methacrylate and styrene" @default.
- W4244682714 doi "https://doi.org/10.1002/(sici)1521-3935(19980901)199:9<1981::aid-macp1981>3.3.co;2-7" @default.
- W4244682714 hasPublicationYear "1998" @default.
- W4244682714 type Work @default.
- W4244682714 citedByCount "0" @default.
- W4244682714 crossrefType "journal-article" @default.
- W4244682714 hasAuthorship W4244682714A5047974735 @default.
- W4244682714 hasAuthorship W4244682714A5051417622 @default.
- W4244682714 hasAuthorship W4244682714A5052021100 @default.
- W4244682714 hasConcept C111998727 @default.
- W4244682714 hasConcept C15487406 @default.
- W4244682714 hasConcept C15920480 @default.
- W4244682714 hasConcept C166940927 @default.
- W4244682714 hasConcept C178790620 @default.
- W4244682714 hasConcept C185592680 @default.
- W4244682714 hasConcept C188027245 @default.
- W4244682714 hasConcept C2777566558 @default.
- W4244682714 hasConcept C2777935641 @default.
- W4244682714 hasConcept C2778279444 @default.
- W4244682714 hasConcept C2780634384 @default.
- W4244682714 hasConcept C44228677 @default.
- W4244682714 hasConcept C521977710 @default.
- W4244682714 hasConcept C53856295 @default.
- W4244682714 hasConcept C75473681 @default.
- W4244682714 hasConceptScore W4244682714C111998727 @default.
- W4244682714 hasConceptScore W4244682714C15487406 @default.
- W4244682714 hasConceptScore W4244682714C15920480 @default.
- W4244682714 hasConceptScore W4244682714C166940927 @default.
- W4244682714 hasConceptScore W4244682714C178790620 @default.
- W4244682714 hasConceptScore W4244682714C185592680 @default.
- W4244682714 hasConceptScore W4244682714C188027245 @default.
- W4244682714 hasConceptScore W4244682714C2777566558 @default.
- W4244682714 hasConceptScore W4244682714C2777935641 @default.
- W4244682714 hasConceptScore W4244682714C2778279444 @default.
- W4244682714 hasConceptScore W4244682714C2780634384 @default.
- W4244682714 hasConceptScore W4244682714C44228677 @default.
- W4244682714 hasConceptScore W4244682714C521977710 @default.
- W4244682714 hasConceptScore W4244682714C53856295 @default.
- W4244682714 hasConceptScore W4244682714C75473681 @default.
- W4244682714 hasIssue "9" @default.
- W4244682714 hasLocation W42446827141 @default.
- W4244682714 hasOpenAccess W4244682714 @default.
- W4244682714 hasPrimaryLocation W42446827141 @default.
- W4244682714 hasRelatedWork W1983759245 @default.
- W4244682714 hasRelatedWork W1992235336 @default.
- W4244682714 hasRelatedWork W2005392580 @default.
- W4244682714 hasRelatedWork W2086208688 @default.
- W4244682714 hasRelatedWork W2089839935 @default.
- W4244682714 hasRelatedWork W2095264479 @default.
- W4244682714 hasRelatedWork W2100717616 @default.
- W4244682714 hasRelatedWork W2115406434 @default.
- W4244682714 hasRelatedWork W2155807458 @default.
- W4244682714 hasRelatedWork W2165055083 @default.
- W4244682714 hasVolume "199" @default.
- W4244682714 isParatext "false" @default.
- W4244682714 isRetracted "false" @default.
- W4244682714 workType "article" @default.