dc.contributor.author | Gordobil Goñi, Oihana | |
dc.contributor.author | Egüés Artola, Itziar | |
dc.contributor.author | Llano-Ponte Alvarez, Rodrigo Manuel | |
dc.contributor.author | Labidi Bouchrika, Jalel | |
dc.date.accessioned | 2024-02-08T11:41:05Z | |
dc.date.available | 2024-02-08T11:41:05Z | |
dc.date.issued | 2014-01-12 | |
dc.identifier.citation | Polymer Degradation and Stability 108 : 330-338 (2014) | |
dc.identifier.issn | 0141-3910 | |
dc.identifier.issn | 1873-2321 | |
dc.identifier.uri | http://hdl.handle.net/10810/65698 | |
dc.description.abstract | Commercial alkali lignin (CL) and lignin extracted from almond shells by organosolv process (OL) were
used for the preparation of blends with poly(lactic acid) (PLA) with different percentages (0.5, 1, 5, 10 and
20%) by extrusion method. Both lignins were acetylated to improve their compatibility with PLA. PLA/
acetylated lignin blends exhibited greater compatibility than non-acetylated PLA/lignin. Characterization
of lignins has been performed using HPLC, FT-IR, GPC, DSC and TGA. All lignins showed high purity.
Acetylated lignins had lower Tg and higher thermal stability than original lignins. Thermal and
mechanical properties of different blends were investigated. Morphology before and after hydrolytic
degradations of blends with 5% of different lignins were also investigated. The addition of acetylated
lignin appears to prevent hydrolytic degradation of PLA. Lignin content increased the thermal stability of
PLA but does not favor the crystallization of PLA. Maximum strength decreased with high percentages of
originals lignins. However, PLA/acetylated lignin blends remains fairly constant, even at high percentages.
In all cases, the elongation at break was increased. | es_ES |
dc.description.sponsorship | The authors are grateful for the financial support received from the Department of Education, Universities and Investigation of the Basque Government (GIC12/55), Diputacíon de Gipuzkoa and Saiotek program. | |
dc.language.iso | eng | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | lignin | es_ES |
dc.subject | acetylation | es_ES |
dc.subject | poly(lactic acid) | es_ES |
dc.subject | extrusion | es_ES |
dc.subject | Mechanical properties | es_ES |
dc.title | Physicochemical properties of PLA lignin blends | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2014 Elsevier under CC BY-NC-ND license | * |
dc.identifier.doi | 10.1016/j.polymdegradstab.2014.01.002 | |
dc.departamentoes | Ingeniería química y del medio ambiente | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza | es_ES |