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Polymer Bulletin

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23.09.2019 | Original Paper

Rheological, thermal and mechanical properties of biodegradable poly(lactic acid)/poly(butylene adipate-co-terephthalate)/poly(propylene carbonate) polyurethane trinary blown films

verfasst von: Jili Zhao, Xin Li, Hongwei Pan, Xue Ai, Huili Yang, Huiliang Zhang, Ge Gao, Lisong Dong

Erschienen in: Polymer Bulletin | Ausgabe 8/2020

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Abstract

Poly(lactic acid) (PLA), poly(butylene adipate-co-terephthalate) (PBAT) and poly(propylene carbonate) polyurethane (PPCU) were blended by using a twin-screw extruder, and then, the PLA/PBAT/PPCU trinary blends were made into films via the blown film technique. The PLA/PBAT/PPCU blends were characterized by dynamic rheometer and differential scanning calorimetry (DSC). From the analysis of DSC, it indicated that the glass transition temperature (T_g) of PBAT and PPCU was increased and the glass transition temperature (T_g) of PLA was decreased with increasing PPCU content. PPCU could improve miscibility among PLA, PBAT and PPCU. The tests of mechanical showed that the elongation at break of PLA/PBAT/PPCU films decreased from 240 to 226% in the machine direction and from 413 to 353% in the transverse direction. The tensile strength was increased in the machine direction from 40.2 to 46.5 MPa in the machine direction and from 28.5 to 42.8 MPa in the transverse direction. The tear strength was from 1334.7 to 143.6 kN/m in the machine direction and from 137.3 to 147.8 kN/m in the transverse direction. PBAT was a good toughening agent for PLA, and PPCU was a compatibilizer for PBAT and PLA blends.

Vorheriger Artikel Synthesis of a novel post-metallocene titanium complex of chelating [ONOO]-type ligand and studies on the effect of an extra donor arm on its reactivity in aqueous emulsion polymerization

Nächster Artikel Effects of phosphorus-containing aromatic polyamide and organo-modified hydroxyapatite nanoparticles on the thermal, combustion and mechanical properties of polyvinyl chloride

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Titel: Rheological, thermal and mechanical properties of biodegradable poly(lactic acid)/poly(butylene adipate-co-terephthalate)/poly(propylene carbonate) polyurethane trinary blown films
verfasst von: Jili Zhao
Xin Li
Hongwei Pan
Xue Ai
Huili Yang
Huiliang Zhang
Ge Gao
Lisong Dong
Publikationsdatum: 23.09.2019
Verlag: Springer Berlin Heidelberg
Erschienen in: Polymer Bulletin / Ausgabe 8/2020
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI: https://doi.org/10.1007/s00289-019-02942-5

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