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Journal of Polymer Research
Erschienen in: Journal of Polymer Research 10/2019

01.10.2019 | ORIGINAL PAPER

Influence of modified starch and nanoclay particles on crystallization and thermal degradation properties of cross-linked poly(lactic acid)

verfasst von: Mohammad Shayan, Hamed Azizi, Ismaeil Ghasemi, Mohammad Karrabi

Erschienen in: Journal of Polymer Research | Ausgabe 10/2019

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Abstract

Cross-linked poly(lactic acid) (PLA)/ maleated thermoplastic starch (MTPS)/ montmorillonite (MMT) composites were prepared by melt blending. Crosslinking was conducted by adding di-cumyl peroxide (DCP) in the presence of triallyl isocyanurate (TAIC) as co-agent. MTPS was produced by grafting maleic anhydride (MA) to thermoplastic starch in an internal mixer. DSC results demonstrated that crosslinking of PLA increased glass transition temperature (Tg) and reduced crystallinity. Presence of MTPS generally declined crystallinity despite of the relative effectiveness of nanoclay particles on enhancing the crystallinity of PLA matrix. Crosslinking of PLA caused significant improvement of thermal stability. Addition of MTPS decreased thermal stability of PLA. Presence of nanoclay enhanced the maximum temperature in final thermal degradation step. The non-isothermal kinetics of the degradation processes was assessed using two different integral methods. Results showed that crosslinking increased decomposition activation energy of PLA. However, addition of MTPS and nanoclay caused to decrease of activation energy.
Nächster Artikel Synthesis, characterization, toxicity and in vivo imaging of lysine graft polymeric nanoparticles

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Metadaten
Titel
Influence of modified starch and nanoclay particles on crystallization and thermal degradation properties of cross-linked poly(lactic acid)
verfasst von
Mohammad Shayan
Hamed Azizi
Ismaeil Ghasemi
Mohammad Karrabi
Publikationsdatum
01.10.2019
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 10/2019
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-019-1879-1

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