Publication:
Critical parameters controlling the properties of monolithic poly(lactic acid) foams prepared by thermally induced phase separation

Simple item page
dc.contributor.coauthorN/A
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.departmentKUYTAM (Koç University Surface Science and Technology Center)
dc.contributor.kuauthorÖnder, Özgün Can
dc.contributor.kuauthorYılgör, Emel
dc.contributor.kuauthorYılgör, İskender
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-09T23:03:49Z
dc.date.issued2019
dc.description.abstractMonolithic poly(lactic acid) (PLA) foams were produced by thermally induced phase separation. PLA solutions with concentrations 8-22 wt % were prepared in tetrahydrofuran/methanol (THF/MeOH) solvent/nonsolvent mixtures at 55 degrees C. Homogenous solutions were quenched at -20 degrees C to induce phase separation and gelation. Resulting gels were mechanically stabilized by solvent exchange. Subsequent supercritical CO2 drying yielded monolithic PLA foams. Crystal structure and degree of crystallinity of the foams were obtained by x-ray diffractometry and differential scanning calorimetry. Morphologies were determined by scanning electron microscopy. Tuning the PLA concentration and THF/MeOH ratio enabled preparation of monolithic PLA foams. Depending on the experimental conditions various morphologies, such as: interconnected networks, thin platelets, lamellar stacks, axialites, and spherulites were formed. Monoliths obtained were highly crystalline. By changing the PLA concentration monoliths with controlled average pore sizes (170-1440 nm) and porosities (80-90%) were produced.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue2
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipTUBITAK(The Scientific and Technological Research Council of Turkey) [2211-A] This study was partially supported by TUBITAK(The Scientific and Technological Research Council of Turkey, 2211-A Domestic Doctoral Scholarship Program).
dc.description.volume57
dc.identifier.doi10.1002/polb.24762
dc.identifier.eissn1099-0488
dc.identifier.issn0887-6266
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85056793454
dc.identifier.urihttps://doi.org/10.1002/polb.24762
dc.identifier.urihttps://hdl.handle.net/20.500.14288/8534
dc.identifier.wos453458200003
dc.keywordsFoams
dc.keywordsMorphology
dc.keywordsPhase separation
dc.keywordsPLA crystallization
dc.keywordsPoly(lactic acid) foams
dc.keywordsThermally induced phase separation
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofJournal of Polymer Science Part B-Polymer Physics
dc.subjectPolymer science
dc.titleCritical parameters controlling the properties of monolithic poly(lactic acid) foams prepared by thermally induced phase separation
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorÖnder, Özgün Can
local.contributor.kuauthorYılgör, Emel
local.contributor.kuauthorYılgör, İskender
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit1Research Center
local.publication.orgunit2Department of Chemistry
local.publication.orgunit2KUYTAM (Koç University Surface Science and Technology Center)
local.publication.orgunit2Graduate School of Sciences and Engineering
relation.isOrgUnitOfPublication035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isOrgUnitOfPublication3fc31c89-e803-4eb1-af6b-6258bc42c3d8
relation.isOrgUnitOfPublicationd41f66ba-d7a4-4790-9f8f-a456c391209b
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isParentOrgUnitOfPublicationaf0395b0-7219-4165-a909-7016fa30932d
relation.isParentOrgUnitOfPublication434c9663-2b11-4e66-9399-c863e2ebae43
relation.isParentOrgUnitOfPublicationd437580f-9309-4ecb-864a-4af58309d287
relation.isParentOrgUnitOfPublication.latestForDiscoveryaf0395b0-7219-4165-a909-7016fa30932d

Files

Collections

Publications without Fulltext