Effect of Molar Mass on Critical Specific Work of Flow for Shear-Induced Crystal Nucleation in Poly (l-Lactic Acid)
dc.bibliographicCitation.firstPage | 1266 | eng |
dc.bibliographicCitation.issue | 8 | eng |
dc.bibliographicCitation.journalTitle | Polymers | eng |
dc.bibliographicCitation.volume | 13 | eng |
dc.contributor.author | Du, Mengxue | |
dc.contributor.author | Jariyavidyanont, Katalee | |
dc.contributor.author | Kühnert, Ines | |
dc.contributor.author | Boldt, Regine | |
dc.contributor.author | Androsch, René | |
dc.date.accessioned | 2022-04-12T07:45:14Z | |
dc.date.available | 2022-04-12T07:45:14Z | |
dc.date.issued | 2021 | |
dc.description.abstract | The concept of specific work of flow has been applied for the analysis of critical shearing conditions for the formation of crystal nuclei in poly (l-lactic acid) (PLLA). Systematic variation in both time and rate of shearing the melt in a parallel-plate rheometer revealed that these parameters are interconvertible regarding the shear-induced formation of crystal nuclei; that is, low shear rate can be compensated for by increasing the shear time and vice versa. This result supports the view that critical shearing conditions can be expressed by a single quantity, providing additional options for tailoring polymer processing routes when enhanced nuclei formation is desired/unwanted. Analysis of PLLA of different mass-average molar masses of 70, 90, 120, and 576 kDa confirmed improved shear-induced crystal nucleation for materials of higher molar mass, with critical specific works of flow, above which shear-induced nuclei formation occurs, of 550, 60, 25, and 5 kPa, respectively. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/8642 | |
dc.identifier.uri | https://doi.org/10.34657/7680 | |
dc.language.iso | eng | eng |
dc.publisher | Basel : MDPI | eng |
dc.relation.doi | https://doi.org/10.3390/polym13081266 | |
dc.relation.essn | 2073-4360 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 540 | eng |
dc.subject.other | Crystallization | eng |
dc.subject.other | Molar mass | eng |
dc.subject.other | Nucleation | eng |
dc.subject.other | Poly (L-lactic acid) | eng |
dc.subject.other | Shear-induced crystal nucleation | eng |
dc.subject.other | Specific work of flow | eng |
dc.title | Effect of Molar Mass on Critical Specific Work of Flow for Shear-Induced Crystal Nucleation in Poly (l-Lactic Acid) | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IPF | eng |
wgl.subject | Chemie | eng |
wgl.type | Zeitschriftenartikel | eng |
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