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Int. J. Mol. Sci. 2018, 19(7), 2032;

Biodegradable and Toughened Composite of Poly(Propylene Carbonate)/Thermoplastic Polyurethane (PPC/TPU): Effect of Hydrogen Bonding

The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China
School of Chemical Engineering and Technology, Sun Yat-Sen University, Guangzhou 510275, China
Shanghai Kingfa Science and Technology Development Co., Ltd., Shanghai 201714, China
Shenzhen Beauty Star Co., Ltd., Shenzhen 518112, China
Authors to whom correspondence should be addressed.
Received: 25 May 2018 / Revised: 21 June 2018 / Accepted: 30 June 2018 / Published: 13 July 2018
(This article belongs to the Special Issue Synthesis and Applications of Biopolymer Composites)
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The blends of Poly(propylene carbonate) (PPC) and polyester-based thermoplastic polyurethane (TPU) were melt compounded in an internal mixer. The compatibility, thermal behaviors, mechanical properties and toughening mechanism of the blends were investigated using Fourier transform infrared spectra (FTIR), tensile tests, impact tests, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and dynamic mechanical analysis technologies. FTIR and SEM examination reveal strong interfacial adhesion between PPC matrix and suspended TPU particles. Dynamic mechanical analyzer (DMA) characterize the glass transition temperature, secondary motion and low temperature properties. By the incorporation of TPU, the thermal stabilities are greatly enhanced and the mechanical properties are obviously improved for the PPC/TPU blends. Moreover, PPC/TPU blends exhibit a brittle-ductile transition with the addition of 20 wt % TPU. It is considered that the enhanced toughness results in the shear yielding occurred in both PPC matrix and TPU particles of the blends. View Full-Text
Keywords: Poly(propylene carbonate); thermoplastic polyurethane; compatibility; toughness Poly(propylene carbonate); thermoplastic polyurethane; compatibility; toughness

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Han, D.; Chen, G.; Xiao, M.; Wang, S.; Chen, S.; Peng, X.; Meng, Y. Biodegradable and Toughened Composite of Poly(Propylene Carbonate)/Thermoplastic Polyurethane (PPC/TPU): Effect of Hydrogen Bonding. Int. J. Mol. Sci. 2018, 19, 2032.

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