Nanomechanical properties of plasma treated polylactic acid
المؤلف | Koumoulos E.P. |
المؤلف | Valentin M. |
المؤلف | Dragatogiannis D. |
المؤلف | Charitidis C.A. |
المؤلف | Krupa I. |
المؤلف | Novak I. |
تاريخ الإتاحة | 2022-05-31T19:01:30Z |
تاريخ النشر | 2015 |
اسم المنشور | Plastics, Rubber and Composites |
المصدر | Scopus |
المعرّف | http://dx.doi.org/10.1179/1743289815Y.0000000023 |
الملخص | In this work, a radio frequency discharged plasma generated in air atmosphere by pressure has been used to modify polylactic acid (PLA) surface. The results were evaluated through nanoindentation testing. Contact angle measurements revealed a gradual transition to a more hydrophilic state with increasing polarity after plasma treatment, while partial recovery to their untreated state during 10 day storage in air was evidenced. The results were evaluated through nanoindentation testing. All PLA samples exhibited an almost hard-like surface area where hardness and elastic modulus are enhanced. The activity of the plasma creates a higher cross-linking density within the material in the surface region. For higher displacements, both H and E tend to reach pristine PLA's values. Hardness values reveal surface hardening due to plasma treatment except for 180 s etching time, where hardness is slightly decreased possibly due to surface deformation. The change of H/E slope reveals the strengthening of oxygen plasma etched PLA with 180 s of etching time with increasing displacement. |
اللغة | en |
الناشر | Maney Publishing |
الموضوع | Etching Hardness Nanoindentation Plasma applications Cross-linking density Gradual transition Hardness and elastic modulus Nanoindentation testing Nanomechanical property Poly lactic acid Radio frequencies Surface deformation Polyesters |
النوع | Article |
الصفحات | 322-329 |
رقم العدد | 8 |
رقم المجلد | 44 |
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