Photooxidative Behavior of Polystyrene Nanocomposites Filled with Two-Dimensional Molybdenum Disulfide
dc.contributor.author | Angulo A.L. | |
dc.contributor.author | Rodriguez C.L.C. | |
dc.contributor.author | Fechine G.J.M. | |
dc.date.accessioned | 2024-03-12T19:09:35Z | |
dc.date.available | 2024-03-12T19:09:35Z | |
dc.date.issued | 2023 | |
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.issuenumber | 9 | |
dc.description.volume | 15 | |
dc.identifier.doi | 10.3390/polym15092099 | |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | https://dspace.mackenzie.br/handle/10899/34076 | |
dc.relation.ispartof | Polymers | |
dc.rights | Acesso Aberto | |
dc.subject.otherlanguage | molybdenum disulfide | |
dc.subject.otherlanguage | nanocomposites | |
dc.subject.otherlanguage | photodegradation | |
dc.subject.otherlanguage | polystyrene | |
dc.subject.otherlanguage | two-dimensional filler | |
dc.title | Photooxidative Behavior of Polystyrene Nanocomposites Filled with Two-Dimensional Molybdenum Disulfide | |
dc.type | Artigo | |
local.scopus.citations | 1 | |
local.scopus.eid | 2-s2.0-85159284592 | |
local.scopus.subject | Accelerated weathering | |
local.scopus.subject | FTIR | |
local.scopus.subject | Infrared: spectroscopy | |
local.scopus.subject | Photo degradation | |
local.scopus.subject | Polystyrene nanocomposites | |
local.scopus.subject | Size-exclusion chromatography | |
local.scopus.subject | Two-dimensional | |
local.scopus.subject | Two-dimensional fillers | |
local.scopus.subject | UV/ Vis spectroscopy | |
local.scopus.subject | Weathering studies | |
local.scopus.updated | 2024-12-01 | |
local.scopus.url | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85159284592&origin=inward |