Iranian Researcher Creates Environmental Friendly Polymer Materials for Packaging Industry

Sunday, November 24, 2019 - 09:25

Iranian researchers from Amirkabir University of Technology have created environmental friendly polymer materials which can be applied in manufacturing parts, food packaging and the medical industry.

According to an ISCA report, Mahsa Nematollahi in cooperation with Azam Jalali‐Arani and Hamid Modarress released the results of their study, “High‐performance bio‐based poly(lactic acid)/natural rubber/epoxidized natural rubber blends: effect of epoxidized natural rubber on microstructure, toughness and static and dynamic mechanical properties” in Polymer International scientific journal.

In this research, “attempts have been made to prepare high‐performance bio‐based blends through blending of poly (lactic acid) (PLA) with natural rubber (NR) in the presence of epoxidized natural rubber (ENR) as a compatibilizer.”

“The prepared samples were characterized using differential scanning calorimetry, measuring the tensile properties and impact resistance, scanning electron microscopy, Fourier transform infrared (FTIR) spectroscopy and dynamic mechanical analysis (DMTA).”

“Morphological studies revealed a matrix‐dispersed morphology for all blends, in which the average droplet size significantly decreased with the use of ENR. The elongation at break and impact strength of the blend containing 3 wt% ENR were 45 and 16 times those of neat PLA, respectively.”

“These values are significantly higher than those previously reported for various simple and dynamically vulcanized rubber‐toughened PLAs. The influence of ENR on compatibility was confirmed by rheological tests, FTIR spectra and DMTA. DMTA also showed a marked increase in elastic modulus for the blend in the presence of 3 wt% ENR. The tensile properties and impact resistance were directly dependent on the ENR content and rubber droplet size.”

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