Melting and crystallization of poly(3-hydroxybutyrate): Effect of heating/cooling rates on phase transformation

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dc.contributor.authorWellen R.M.R.
dc.contributor.authorRabello M.S.
dc.contributor.authorAraujo I.C.
dc.contributor.authorFechine G.J.M.
dc.contributor.authorCanedo E.L.
dc.date.accessioned2024-03-13T00:59:08Z
dc.date.available2024-03-13T00:59:08Z
dc.date.issued2015
dc.description.abstractWe studied the crystallization and melting phenomena of poly (3- hydroxybutyrate) (PHB), a biodegradable and biocompatible semi-crystalline thermoplastic, obtained from renewable resources. Its high crystallinity motivated several studies on crystallization and melting behavior, and also on ways to increase the amorphous polymer fraction. The effect of heating and cooling rates on the crystallization and melting of commercial PHB was investigated by differential scanning calorimetry. Several rates, ranging from 2.5 to 20°C min-1, were used to study the phase changes during heating/cooling/reheating cycles. The results showed that PHB partially crystallizes from the melt during the cooling cycle and partially cold crystallizes on reheating, and that the relative amount of polymer crystallizing in each stage strongly depends on the cooling rate. The melt and cold crystallization temperatures, as well as the rates of phase change, depend strongly on the cooling and heating rates.
dc.description.firstpage296
dc.description.issuenumber3
dc.description.lastpage304
dc.description.volume25
dc.identifier.doi10.1590/0104-1428.1961
dc.identifier.issn0104-1428
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36308
dc.relation.ispartofPolimeros
dc.rightsAcesso Aberto
dc.subject.otherlanguageCrystallization
dc.subject.otherlanguageDSC
dc.subject.otherlanguageKinetics
dc.subject.otherlanguageMelting
dc.subject.otherlanguagePHB
dc.titleMelting and crystallization of poly(3-hydroxybutyrate): Effect of heating/cooling rates on phase transformation
dc.typeArtigo
local.scopus.citations37
local.scopus.eid2-s2.0-84940105951
local.scopus.subjectCold crystallization temperature
local.scopus.subjectDSC
local.scopus.subjectHeating and cooling rates
local.scopus.subjectHeating/cooling rate
local.scopus.subjectMelting and crystallization
local.scopus.subjectPHB
local.scopus.subjectPoly(3-hydroxybutyrate)
local.scopus.subjectRenewable resource
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84940105951&origin=inward
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