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Effect of POE-g-GMA on mechanical, rheological and thermal properties of poly(lactic acid)/poly(propylene carbonate) blends

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Abstract

Glycidyl methacrylate (GMA) functionalized polyolefin elastomers (POE) (POE-g-GMA), which was a reactive processing agent, was melt-blended with poly(lactic acid) (PLA) and poly(propylene carbonate) (PPC) by twin-screw extrusion. The mechanical property results showed that with the addition of POE-g-GMA, the elongation at break and impact toughness of PLA/PPC blends increased while the tensile strength decreased. Dynamic thermomechanical analysis (DMA) and scanning electron microscope (SEM) results indicated that PLA/POE-g-GMA/PPC blends were partly miscible and the addition of POE-g-GMA improved the compatibility of blends. The higher Tcs and lower Tms of PLA/POE-g-GMA/PPC blends showed a depressed crystalline ability of PLA caused by the decreased chain mobility according to the differential scanning calorimetry results and the thermal stability of PLA/POE-g-GMA/PPC blends was enhanced. Rheological results revealed that the addition of POE-g-GMA made the storage modulus (G′), loss modulus (G″) and complex viscosity of the blends increase, the melt strength also improved. These findings contributed to the biodegradable materials application for designing and manufacturing PLA film.

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Acknowledgements

The authors are graceful to the National High-Tech R&D Program of China (no. 2013AA032202), the National Natural Science Foundation of China (no. 51203118), the Shanghai Automotive Industry Science and Technology Development Foundation (Grant no. 1006), the Fundamental Research Funds for the Central Universities and the Open Funds for Characterization of Tongji University.

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Authors and Affiliations

  1. Institute of Nano and Bio-Polymeric Materials, Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, School of Material Science and Engineering, Tongji University, Shanghai, 201804, China

    Ye Zhou, Jiao Wang, Shen-Yang Cai, Zhi-Gang Wang & Jie Ren

  2. Shanghai Tong-Jie-Liang Biomaterials Co. Ltd., Shanghai, 200438, China

    Nai-Wen Zhang

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  1. Ye Zhou
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  2. Jiao Wang
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  3. Shen-Yang Cai
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  4. Zhi-Gang Wang
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Correspondence to Jie Ren.

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Zhou, Y., Wang, J., Cai, SY. et al. Effect of POE-g-GMA on mechanical, rheological and thermal properties of poly(lactic acid)/poly(propylene carbonate) blends. Polym. Bull. 75, 5437–5454 (2018). https://doi.org/10.1007/s00289-018-2339-5

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  • DOI: https://doi.org/10.1007/s00289-018-2339-5

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