The Potential Use of Epoxy‐POSS as a Reactive Hybrid Compatibilizers for PLA/PBAT Blends: “Effect of PBAT Molecular Weight and POSS Type”

This article focuses on the effect of molecular weight of poly(butylene adipate‐co‐terephthalate) (PBAT) on the immiscible poly(lactic acid) (PLA)/PBAT blends compatibilized with epoxidized polyhedral oligomeric silsesquioxanes (Epoxy‐POSSs) having different numbers of epoxy groups per molecule. Mec...

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Published in:Polymer engineering and science 2020-02, Vol.60 (2), p.398-413
Main Authors: Kilic, Nilay Tuccar, Can, Buse Nur, Kodal, Mehmet, Ozkoc, Guralp
Format: Article
Language:English
Subjects:
Butylene
Compatibility
Compatibilizers
Epoxy resins
Functional groups
Glass transition temperature
Industrial equipment
Lactic acid
Mechanical tests
Molecular weight
Polyhedral oligomeric silsesquioxane
Polylactic acid
Polymer blends
Polymers
Rheological properties
Rheology
Terephthalate
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cited_by cdi_FETCH-LOGICAL-c5105-6624a17a9a71aae2fe8e0f970ba86b09837d7bad2f6f80e6350f81b6492ad7fe3
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creator Kilic, Nilay Tuccar
Can, Buse Nur
Kodal, Mehmet
Ozkoc, Guralp
description This article focuses on the effect of molecular weight of poly(butylene adipate‐co‐terephthalate) (PBAT) on the immiscible poly(lactic acid) (PLA)/PBAT blends compatibilized with epoxidized polyhedral oligomeric silsesquioxanes (Epoxy‐POSSs) having different numbers of epoxy groups per molecule. Mechanical, thermomechanical, thermal, rheological, and morphological properties of the blends were investigated as a function of PBAT molecular weight and epoxy‐POSS type. Mechanical tests revealed that all epoxy‐POSS types significantly improved the performance of the blends containing low‐molecular‐weight PBAT. On the other hand, epoxy‐POSS with three epoxy functional groups (TriEpPOSS) and Epoxy‐POSS with multiple‐epoxy functional groups (MuEpPOSS) only slightly improved the performance of blends with high‐molecular‐weight PBAT. Thermomechanical and thermal test results supported that the compatibilization effects of the epoxy‐POSSs were more prominent in the PLA/PBAT blends with low‐molecular‐weight PBAT due to the observation of the shifts in the glass transition temperatures of the PLA phase. According to the rheological results, the addition of epoxy‐POSSs increased the interactions between the PLA and PBAT phases much more effectively in the PLA/PBAT with low‐molecular‐weight PBAT. The dispersed phase size of the PBAT further decreased in the low‐molecular‐weight PLA/PBAT blend system due to the enhanced compatibility much better. POLYM. ENG. SCI., 60: 398–413, 2019. © 2019 Society of Plastics Engineers
doi_str_mv 10.1002/pen.25295
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Mechanical, thermomechanical, thermal, rheological, and morphological properties of the blends were investigated as a function of PBAT molecular weight and epoxy‐POSS type. Mechanical tests revealed that all epoxy‐POSS types significantly improved the performance of the blends containing low‐molecular‐weight PBAT. On the other hand, epoxy‐POSS with three epoxy functional groups (TriEpPOSS) and Epoxy‐POSS with multiple‐epoxy functional groups (MuEpPOSS) only slightly improved the performance of blends with high‐molecular‐weight PBAT. Thermomechanical and thermal test results supported that the compatibilization effects of the epoxy‐POSSs were more prominent in the PLA/PBAT blends with low‐molecular‐weight PBAT due to the observation of the shifts in the glass transition temperatures of the PLA phase. 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source Wiley-Blackwell Read & Publish Collection
subjects Butylene
Compatibility
Compatibilizers
Epoxy resins
Functional groups
Glass transition temperature
Industrial equipment
Lactic acid
Mechanical tests
Molecular weight
Polyhedral oligomeric silsesquioxane
Polylactic acid
Polymer blends
Polymers
Rheological properties
Rheology
Terephthalate
title The Potential Use of Epoxy‐POSS as a Reactive Hybrid Compatibilizers for PLA/PBAT Blends: “Effect of PBAT Molecular Weight and POSS Type”
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