Photooxidative Behavior of Polystyrene Nanocomposites Filled with Two-Dimensional Molybdenum Disulfide

dc.contributor.authorAngulo A.L.
dc.contributor.authorRodriguez C.L.C.
dc.contributor.authorFechine G.J.M.
dc.date.accessioned2024-03-12T19:09:35Z
dc.date.available2024-03-12T19:09:35Z
dc.date.issued2023
dc.description.abstract© 2023 by the authors.This study aimed to investigate how an ultralow content of a molybdenum disulfide (MoS2) two-dimensional particle affects the photodegradation mechanism of polystyrene (PS). Here, an accelerated weathering study was presented on neat polystyrene and its nanocomposites produced with 0.001, 0.002, 0.003 and 0.005 wt% of molybdenum disulfide (MoS2) exposed for various irradiation intervals (up to 8 weeks). The polymer photo-transformations were monitored using size exclusion chromatography (SEC), infrared spectroscopy (FTIR), and UV-Vis spectroscopy. The FTIR and UV/Vis results indicate that the PS degradation mechanism was not altered by the presence of MoS2 particles; however, the degradation reactions were slowed down at higher MoS2 contents (>0.003%). The SEC results proved the stabilizer effect due to MoS2 particles, where (Formula presented.), (Formula presented.), and (Formula presented.) / (Formula presented.) values after 8 weeks were less modified when compared with the neat PS results. The MoS2 acted as a UV stabilizer, and these two-dimensional particles acted by deactivating the free radicals generated by the PS matrix, even considering the low amount of the filler (<0.005 wt%).
dc.description.issuenumber9
dc.description.volume15
dc.identifier.doi10.3390/polym15092099
dc.identifier.issn2073-4360
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34076
dc.relation.ispartofPolymers
dc.rightsAcesso Aberto
dc.subject.otherlanguagemolybdenum disulfide
dc.subject.otherlanguagenanocomposites
dc.subject.otherlanguagephotodegradation
dc.subject.otherlanguagepolystyrene
dc.subject.otherlanguagetwo-dimensional filler
dc.titlePhotooxidative Behavior of Polystyrene Nanocomposites Filled with Two-Dimensional Molybdenum Disulfide
dc.typeArtigo
local.scopus.citations1
local.scopus.eid2-s2.0-85159284592
local.scopus.subjectAccelerated weathering
local.scopus.subjectFTIR
local.scopus.subjectInfrared: spectroscopy
local.scopus.subjectPhoto degradation
local.scopus.subjectPolystyrene nanocomposites
local.scopus.subjectSize-exclusion chromatography
local.scopus.subjectTwo-dimensional
local.scopus.subjectTwo-dimensional fillers
local.scopus.subjectUV/ Vis spectroscopy
local.scopus.subjectWeathering studies
local.scopus.updated2024-06-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85159284592&origin=inward
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