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Titre :
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Development characterization and numerical simulation of the effect of incorporating a compatibilizer on the properties of bio-sourced polymer blends : PLA/PS and PLA/LDPE
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Auteurs :
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Tahar Aouissi, Auteur ;
Abdelhak Hellati, Directeur de thèse
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Type de document :
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document électronique
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Editeur :
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Sétif : Université Ferhat Abbas faculté de technologie département de génie de procédés, 2024
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ISBN/ISSN/EAN :
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E-TH/2311
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Format :
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1 vol. (106 f.) / ill. en coul.
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Note générale :
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Références
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Langues:
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Anglais
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Catégories :
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Thèses (en français - en anglais) > Document électronique
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Résumé :
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This work focuses on the study of the structural, thermal, rheological, morphological and mechanical properties of PLA/PS and PLA/LDPE polymers using a compatibilising agent, SEBS-g-MAH, in different proportions. The aim was to better understand the role of SEBS-gMAH as a bonding agent between the two different blends. Theoretical calculation (simulation), in particular molecular modelling, was also used as an alternative to obtain results concerning structural and spectroscopic properties. Analysis, using X-ray difraction (XRD), differential scanning calorimetry (DSC)and scanning electron microscopy (SEM), confirmed a reduction in PLA crystallinity with the addition of SEBS-g-MAH in both types of blends.Theoretical calculations,in particular dynamic molecular MD,confirmed the increase in binding energy between PLA and PS and the role of SEBS-g-MAH in improving their compatibility.DFT results,including DOS and COSMO calculations,indicated an affinity between LDPE and the compatibiliser in the olefin part of SEBS-g-MAH.For PLA,an affinity was identified between the ester group (C=O) and the O-H group of SEBS-g-MAH.
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Côte titre :
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E-TH/2311
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En ligne :
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http://dspace.univ-setif.dz:8888/jspui/retrieve/8480/2311.pdf
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Exemplaires (1)
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| E-TH/2311 | Thèse | Bibliothèque centrale | Disponible |
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