Past and Present Research Systems of Green Chemistry

Biography

Biography: Niranjan Karak

Abstract

The huge demands of petroleum products with ever increasing world population, sophistication and comfort in life in one hand; depletion of oil reserves, threats of global warming and stringent environmental rules and regulations on the other, incline researchers to maximize the utilization of naturally renewable resources as the feedstock for the development of above products. In this milieu, bio-based three dimensional hyperbranched polymers have sculpted their own niche because of favorable properties over their conventional linear analogs. So a large variety of industrially important bio-based hyperbranched polymers are being reported from this laboratory. These hyperbranched polymers are mainly synthesized by Ax + By (x, y ≥2) approach using slow addition and high dilution technique. This approach follows the dictated of ‘Green Chemistry’, achieve high carbon credits and maintain the triple bottom line concept. However, to improve the performance and to address the advanced requirements of such polymers, a large number of nanocomposites of such hyperbranched polymers with almost all types of nanomaterials are investigated from this laboratory. The resultant nanocomposites exhibited significant improvement of many desired useful properties including mechanical, thermal, chemical, biological, etc., along with antimicrobial, antistatic, fluorescent, shape memory, biocompatibility, etc. depending on the nature of used nanomaterials. The overview of all these results from synthesis to properties evaluation, including various advanced applications will be discussed in this conference. The talk will address the sustainability protocols for obtaining such advanced polymeric materials from low cost, readily available naturally renewable resources.