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Preparation and characterization of Santa Barbara Amorphous-15 particles functionalized with mercaptopropyl groups and of their composites with poly(lactic acid)

2025-01Journal article Open access
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dc.contributor.authorDíez-Rodríguez, Tamara M.
dc.contributor.authorBlázquez-Blázquez, Enrique
dc.contributor.authorLourenço, João P.
dc.contributor.authorMartínez, Juan C.
dc.contributor.authorCerrada, María L.
dc.contributor.authorPérez, Ernesto
dc.date.accessioned2024-11-27T14:20:49Z
dc.date.available2024-11-27T14:20:49Z
dc.date.issued2025-01
dc.description.abstractSanta Barbara Amorphous-15 (SBA-15) particles functionalized with mercaptopropyl groups (named as SBASH) have been prepared by a synthetic one-pot approach, and then have been incorporated into poly(lactic acid) (PLA), comparing their characteristics with those shown by composites attained with neat SBA-15 (PLASBA). The silica including the mercaptopropyl groups exhibits a certain loss of regularity because of its functionalization, although displays a better interaction with PLA than the pristine SBA-15 particles in the resulting materials. These composites (PLASBASH and PLASBA) also show a thermal stability slightly higher than neat PLA. An important nucleation effect of SBASH silica in the crystallization of PLA has been deduced from cooling experiments as well as from the cold crystallization in heating runs and from the degree of crystallinity reached. Small Angle X-ray Scattering (SAXS) profiles show that the PLA long spacings are rather similar for the different composites and the neat PLA. Thus, crystal size is rather similar in all samples. Microhardness values show an evident effect of reinforcement in all the composites compared with that shown by neat PLA. Nevertheless, the increase in rigidity is smaller in the biobased PLASBASH composites, those containing the modified silica, than in the PLASBA materials with the pristine SBA-15 particles.eng
dc.description.sponsorshipMCIN/AEI/10.13039/501100011033; PID2020-114930 GB-I00
dc.identifier.doi10.1016/j.micromeso.2024.113391
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/10400.1/26355
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationCentro de Química Estrutural
dc.relation.ispartofMicroporous and Mesoporous Materials
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectPLA
dc.subjectFunctionalized SBA-15
dc.subjectMercaptopropyl groups
dc.subjectNucleation capacity
dc.subjectCold crystallization
dc.subjectCrystal structure
dc.titlePreparation and characterization of Santa Barbara Amorphous-15 particles functionalized with mercaptopropyl groups and of their composites with poly(lactic acid)eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
oaire.citation.startPage113391
oaire.citation.titleMicroporous and Mesoporous Materials
oaire.citation.volume382
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameLourenço
person.givenNameJoão P.
person.identifier634248
person.identifier.ciencia-idF81F-A1F0-2A7C
person.identifier.orcid0000-0002-0501-6672
person.identifier.ridA-7758-2008
person.identifier.scopus-author-id57195730600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublicationf66ab886-d989-4c1d-9550-527507723c26
relation.isAuthorOfPublication.latestForDiscoveryf66ab886-d989-4c1d-9550-527507723c26
relation.isProjectOfPublicationdf39fd72-bd68-4aaf-8b89-25d17b8c5ebd
relation.isProjectOfPublication.latestForDiscoverydf39fd72-bd68-4aaf-8b89-25d17b8c5ebd

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