The Effect of Poly(Ethylene Succinate) on Mechanical Properties of PLLA/PES Blend Prepared by Melt-Blending |
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| Authors: | Xin Fan Jianming Ruan Qiyuan Chen Jian Chen Zhongcheng Zhou Jianpeng Zou |
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| Institution: | 1. College of Chemistry and Chemical Engineering , Central South University , Changsha, 410083, Peoples Republic of China;2. State Key Laboratory of Powder Metallurgy , Central South University , Changsha, 410083, Peoples Republic of China;3. State Key Laboratory of Powder Metallurgy , Central South University , Changsha, 410083, Peoples Republic of China;4. College of Chemistry and Chemical Engineering , Central South University , Changsha, 410083, Peoples Republic of China |
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| Abstract: | Fully biodegradable poly(L-lactide) and poly(ethylene succinate) (PLLA/PES) blends were prepared via melt-blending using PLLA and PES as reactants in a stainless steel chamber. The prepared PLLA/PES blend, as well as neat PLLA and PES, was characterized by Fourier transform infrared spectra (FTIR) and X-ray diffraction (XRD) to confirm the structure and the crystallization of PLLA in the blend. The mechanical properties of PLLA/PES blends were determined by bending and tensile tests and the effects of PES content on the mechanical properties of PLLA/PES blends were investigated. It was found that blending some amount of PES could significantly improve the elongation at break while still keeping considerably high strength and modulus. With increasing PES content, both strength and modulus gradually decreased; however the elongation at break significantly increased. SEM was used to examine the morphology of fracture surfaces of PLLA/PES blends. |
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| Keywords: | blend mechanical properties morphology poly(ethylene succinate) poly(L-lactide) |
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