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Poly(2-ethyl-2-oxazoline) as β-Nucleating Agent for Poly(lactic acid) Blends with High Transparency and Hydrophilicity

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Abstract

This study aims to evaluate the effects of poly(2-ethyl-oxazoline) (PEOx) on the thermal properties, wettability, and optical properties of poly(lactic acid) (PLA). The PLA/PEOx blends (PEOx loading: 5 to 20 wt%) were prepared using the solvent casting method. Good interaction between PLA and PEOx was confirmed by Fourier transform infrared spectroscopy (FTIR) and work of adhesion (determined from dynamic contact angle). The transparency of PLA was improved by the addition of PEOx. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) results proved that the PEOx induces the β-crystals formation of PLA. The higher the loading of PEOx is, the higher the intensity of the β-crystals formation. The transparent PLA/PEOx blends are suitable for packaging applications (both non-food and food packaging).

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Funding

This work was supported by Universiti Sains Malaysia Research University Grant (Grant Number 8014024).

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  1. School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia

    Wei Keat Ng, Wen Shyang Chow & Hanafi Ismail

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  1. Wei Keat Ng
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Correspondence to Wen Shyang Chow.

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Ng, W.K., Chow, W.S. & Ismail, H. Poly(2-ethyl-2-oxazoline) as β-Nucleating Agent for Poly(lactic acid) Blends with High Transparency and Hydrophilicity. J Polym Environ 29, 2650–2659 (2021). https://doi.org/10.1007/s10924-021-02081-x

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