An eco-friendly route of gamma-Fe2O3 nanoparticles formation and investigation of the mechanical properties of the HPMC-gamma-Fe2O3 nanocomposites

作者：Sarkar Joy; Mollick Md Masud Rahaman; Chattopadhyay Dipankar; Acharya Krishnendu^*

来源：Bioprocess and Biosystems Engineering, 2017, 40(3): 351-359.

DOI：10.1007/s00449-016-1702-x

• Biosynthesis
• gamma-Fe2O3 nanoparticles
• HPMC-nano composite films
• Mechanical properties
• Spectroscopy

In recent times, biosynthetic approaches toward the synthesis of nanoparticles have been shown to have several advantages over physical and chemical methods. Here, we report the extracellular mycosynthesis of gamma-Fe2O3 nanoparticles by Alternaria alternata. The fungal biomass when exposed to aqueous iron(III) chloride solution led to the formation of highly stable gamma-Fe2O3 nanoparticles extracellularly. The influence of these biosynthesized gamma-Fe2O3 nanoparticles on the properties of hydroxyl propyl methyl cellulose was also investigated. Characterization of the biosynthesized gamma-Fe2O3 nanoparticles and HPMC-gamma-Fe2O3 nanocomposite films were done by the different types of spectral and electron microscopic analysis. The size of the gamma-Fe2O3 nanoparticles ranges from 75 to 650 nm. The mechanical effect of the agglomerated gamma-Fe2O3 nanoparticles into the HPMC polymer matrix was also investigated.

• 出版日期2017-3