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Morphology, interfacial and mechanical properties of polylactide/poly(ethylene terephthalate glycol) blends compatibilized by polylactide-g-maleic anhydride
https://orcid.org/0000-0003-0198-1632
Graphical abstract Display Omitted
Highlights PLA/PETG blends were compatiblized by PLA-g-MAH. The blend with 3wt% PLA-g-MAH shows the highest low frequency storage modulus. It has smallest size and narrowest size distribution of the dispersed particles. Palierne model and G–M model were used to obtain the interfacial tension. The blend with 3wt% PLA-g-MAH has the minimum interfacial tension and highest εb.
Abstract Polylactide/poly(ethylene terephthalate glycol) (PLA/PETG 80/20wt) blends compatibilized with polylactide-g-maleic anhydride (PLA-g-MAH) were prepared by melt blending and the rheological, morphological and mechanical properties of the blends were studied. PLA/PETG (80/20wt) blend formed a typical sea-island morphology, while upon compatibilization, the size and size distribution of the dispersed phase decreased significantly and the 3wt% PLA-g-MAH compatibilized blend exhibited the smallest phase size and the narrowest distribution of the dispersed particles. The interfacial tension between PLA and PETG was determined from the morphological characteristics and the viscoelastic response of PLA/PETG blends via using two emulsion models. A minimum for PLA/PETG blend containing 3wt% PLA-g-MAH was observed from both Palierne model and G–M model. The elongation-at-break increased by ∼320%, from 6.9% for PLA to 28.7% for the blend containing 3wt% PLA-g-MAH without significant loss in the tensile modulus and tensile strength.
Morphology, interfacial and mechanical properties of polylactide/poly(ethylene terephthalate glycol) blends compatibilized by polylactide-g-maleic anhydride
https://orcid.org/0000-0003-0198-1632
Graphical abstract Display Omitted
Highlights PLA/PETG blends were compatiblized by PLA-g-MAH. The blend with 3wt% PLA-g-MAH shows the highest low frequency storage modulus. It has smallest size and narrowest size distribution of the dispersed particles. Palierne model and G–M model were used to obtain the interfacial tension. The blend with 3wt% PLA-g-MAH has the minimum interfacial tension and highest εb.
Abstract Polylactide/poly(ethylene terephthalate glycol) (PLA/PETG 80/20wt) blends compatibilized with polylactide-g-maleic anhydride (PLA-g-MAH) were prepared by melt blending and the rheological, morphological and mechanical properties of the blends were studied. PLA/PETG (80/20wt) blend formed a typical sea-island morphology, while upon compatibilization, the size and size distribution of the dispersed phase decreased significantly and the 3wt% PLA-g-MAH compatibilized blend exhibited the smallest phase size and the narrowest distribution of the dispersed particles. The interfacial tension between PLA and PETG was determined from the morphological characteristics and the viscoelastic response of PLA/PETG blends via using two emulsion models. A minimum for PLA/PETG blend containing 3wt% PLA-g-MAH was observed from both Palierne model and G–M model. The elongation-at-break increased by ∼320%, from 6.9% for PLA to 28.7% for the blend containing 3wt% PLA-g-MAH without significant loss in the tensile modulus and tensile strength.
Morphology, interfacial and mechanical properties of polylactide/poly(ethylene terephthalate glycol) blends compatibilized by polylactide-g-maleic anhydride
https://orcid.org/0000-0003-0198-1632
Graphical abstract Display Omitted
Highlights PLA/PETG blends were compatiblized by PLA-g-MAH. The blend with 3wt% PLA-g-MAH shows the highest low frequency storage modulus. It has smallest size and narrowest size distribution of the dispersed particles. Palierne model and G–M model were used to obtain the interfacial tension. The blend with 3wt% PLA-g-MAH has the minimum interfacial tension and highest εb.
Abstract Polylactide/poly(ethylene terephthalate glycol) (PLA/PETG 80/20wt) blends compatibilized with polylactide-g-maleic anhydride (PLA-g-MAH) were prepared by melt blending and the rheological, morphological and mechanical properties of the blends were studied. PLA/PETG (80/20wt) blend formed a typical sea-island morphology, while upon compatibilization, the size and size distribution of the dispersed phase decreased significantly and the 3wt% PLA-g-MAH compatibilized blend exhibited the smallest phase size and the narrowest distribution of the dispersed particles. The interfacial tension between PLA and PETG was determined from the morphological characteristics and the viscoelastic response of PLA/PETG blends via using two emulsion models. A minimum for PLA/PETG blend containing 3wt% PLA-g-MAH was observed from both Palierne model and G–M model. The elongation-at-break increased by ∼320%, from 6.9% for PLA to 28.7% for the blend containing 3wt% PLA-g-MAH without significant loss in the tensile modulus and tensile strength.
Morphology, interfacial and mechanical properties of polylactide/poly(ethylene terephthalate glycol) blends compatibilized by polylactide-g-maleic anhydride
Jiang, Wen-Rou (author) / Bao, Rui-Ying (author) / Yang, Wei (author) / Liu, Zheng-Ying (author) / Xie, Bang-Hu (author) / Yang, Ming-Bo (author)
2014-03-05
8 pages
Article (Journal)
Electronic Resource
English
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