Super toughened renewable poly(lactic acid) based ternary blends system: effect of degree of hydrolysis of ethylene vinyl acetate on impact and thermal properties
作者： V. H. Sangeetha , Ravi babu Valapa , S. K. Nayak , T. O. Varghese
DOI: 10.1039/C6RA13366E
关键词:
摘要: Poly(lactic acid) (PLA) is one of the most promising biopolymers due to its biodegradable nature and good tensile strength. In spite these advantages, low impact strength slow crystallization rate exhibited by PLA limit their end use applications. order overcome drawbacks, an attempt has been made in present study prepare binary ternary blends with Ethylene Vinyl Acetate (EVA) ethylene vinyl alcohol (EVOH). The effect degree hydrolysis EVA on thermal mechanical properties investigated. Fourier transform infrared spectroscopy analysis elucidated fact that process effective respect increase reaction time. Differential scanning calorimetry results disclose prominent decrement cold temperature display a distinct melt peak comparison neat PLA. This clear indication EVOH acted as nucleating agent terms clearly indicated reduction stiffness after addition matrix. For PLA, four fold increment elongation at break (%) are observed compared Morphological studies revealed presence adhesion between matrix EVOH.
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sci-hub.se 参考文章(36)
J.P. Mofokeng, A.S. Luyt, Dynamic mechanical properties of PLA/PHBV, PLA/PCL, PHBV/PCL blends and their nanocomposites with TiO2 as nanofiller Thermochimica Acta. ,vol. 613, pp. 41- 53 ,(2015) , 10.1016/J.TCA.2015.05.019
Youhong Wang, Kunling Chen, Chuanhui Xu, Yukun Chen, None, Supertoughened Biobased Poly(lactic acid)–Epoxidized Natural Rubber Thermoplastic Vulcanizates: Fabrication, Co-continuous Phase Structure, Interfacial in Situ Compatibilization, and Toughening Mechanism Journal of Physical Chemistry B. ,vol. 119, pp. 12138- 12146 ,(2015) , 10.1021/ACS.JPCB.5B06244
Masoud Razavi Aghjeh, Mina Nazari, Hossein Ali Khonakdar, Seyed Hassan Jafari, Udo Wagenknecht, Gert Heinrich, In depth analysis of micro-mechanism of mechanical property alternations in PLA/EVA/clay nanocomposites: A combined theoretical and experimental approach Materials & Design. ,vol. 88, pp. 1277- 1289 ,(2015) , 10.1016/J.MATDES.2015.09.081
M.P. Arrieta, J. López, D. López, J.M. Kenny, L. Peponi, Development of flexible materials based on plasticized electrospun PLA–PHB blends: Structural, thermal, mechanical and disintegration properties European Polymer Journal. ,vol. 73, pp. 433- 446 ,(2015) , 10.1016/J.EURPOLYMJ.2015.10.036
Mariano Pracella, Md Minhaz-Ul Haque, Massimo Paci, Vera Alvarez, None, Property tuning of poly(lactic acid)/cellulose bio-composites through blending with modified ethylene-vinyl acetate copolymer Carbohydrate Polymers. ,vol. 137, pp. 515- 524 ,(2016) , 10.1016/J.CARBPOL.2015.10.094
Isinay E. Yuzay, Rafael Auras, Herlinda Soto-Valdez, Susan Selke, Effects of synthetic and natural zeolites on morphology and thermal degradation of poly(lactic acid) composites Polymer Degradation and Stability. ,vol. 95, pp. 1769- 1777 ,(2010) , 10.1016/J.POLYMDEGRADSTAB.2010.05.011
Tadashi Yokohara, Masayuki Yamaguchi, Structure and properties for biomass-based polyester blends of PLA and PBS European Polymer Journal. ,vol. 44, pp. 677- 685 ,(2008) , 10.1016/J.EURPOLYMJ.2008.01.008
Zi-Jing Zhang, Wei Cui, Huan Xu, Lan Xie, Huan Liu, Le-Min Zhu, Hang Li, Rong Ran, A free radical assisted strategy for preparing functionalized carbon nanotubes as a highly efficient nucleating agent for poly(L-lactide) RSC Advances. ,vol. 5, pp. 16604- 16610 ,(2015) , 10.1039/C4RA15189E
Priyanka Choudhary, Smita Mohanty, Sanjay K. Nayak, Lakshmi Unnikrishnan, Poly(L‐lactide)/polypropylene blends: Evaluation of mechanical, thermal, and morphological characteristics Journal of Applied Polymer Science. ,vol. 121, pp. 3223- 3237 ,(2011) , 10.1002/APP.33866
Ravibabu Valapa, Gopal Pugazhenthi, Vimal Katiyar, Thermal degradation kinetics of sucrose palmitate reinforced poly(lactic acid) biocomposites International Journal of Biological Macromolecules. ,vol. 65, pp. 275- 283 ,(2014) , 10.1016/J.IJBIOMAC.2014.01.053