Characterizations of PLA-PEG blends involving organically modified montmorillonite

Date

2017-09-01

Author

Ozdemir, Esra
Hacaloğlu, Jale

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In this study, organically modified montmorillonite composites of poly(lactic acid)-poly(ethylene glycol) (PLA-PEG) blends involving 10,15 and 20 wt% PEG were prepared. The characterization of the composite systems was conducted with various techniques such as gel permeation chromatography (GPC), X-ray diffractometry (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and direct pyrolysis mass spectrometry (DP-MS) in addition to tensile testing. PLA-PEG blend nano composites showed improved tensile strength and modulus upon incorporation of organoclay into the blend. The plasticization effect of PEG was detected in DSC analyses. DP-MS analyses pointed out that loss of low mass fragments occurred at low temperatures, leaving thermally stable chains crosslinked by the chemical interactions between PLA and PEG which were enhanced in the presence of C30B.

Subject Keywords

Poly(lactic acid)-poly(ethylene glycol) blends, Organoclay, Composite, Thermal degradation

URI

https://hdl.handle.net/11511/30208

Journal

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

DOI

https://doi.org/10.1016/j.jaap.2017.07.016

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

E. Ozdemir and J. Hacaloğlu, “Characterizations of PLA-PEG blends involving organically modified montmorillonite,” JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, pp. 343–349, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30208.