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Volume 7
Journal of Material Sciences & Engineering
Biopolymers Summit 2018
June 04-06, 2018
Page 13
conference
series
.com
June 04-06, 2018 Osaka, Japan
7
th
World Congress on
Biopolymers and Polymer Chemistry
Effect of functionalized biopolymers on stereocomplexation and properties of poly(lactic acid) nanocomposite
films, trays and 3D printed implants
T
his presentationhighlights the use of available bio-resources for value added sustainable polymeric products for engineering,
commodity and biomedical applications. Biopolymers can be extracted from renewable feedstock such as plants, marine
animals, insects, etc. It is noteworthy to mention that so far biopolymers extracted from these sources have limited applications
in large scale plastic production. Among the available bio-based synthetic plastics, Polylactic Acid (PLA) has made its own
place due to its biodegradability and potential to replace conventional fossil-based plastics. It is noteworthy to mention that
properties such as melting point, heat deflection temperature and gas barrier properties limits its use in high temperature
commodity and engineering applications. However, these limitations can be overcome by developing new class of high
molecular weight stereocomplex PLA (sc-PLA). In this context, we have synthesized sc-PLA and its sc-PLA-bionanocomposites
by using different bio-based nanofillers which include cellulose nanocrystals, silk nanocrystals, modified chitosan, etc. The
GPC analysis reveals that the synthesized stereo-complex based bionanocomposites have molecular weight higher than 100
kDa. The formation of stereocomplex crystallites is confirmed by the XRD analysis. Melting point of the composite is increased
even higher than 225 °C which suggests the formation of stereocomplex crystallites and the crystallization temperature is
enhanced up to ~155 °C at nanofillers loading of 5 wt%. Due to the presence of various bio nanofillers, ultimate tensile strength
is enhanced significantly. Based on the studies, it can be concluded that bio nanofillers are good candidates for enhancing the
stereocomplexation in the PLA. In this talk, fabrication strategies for synthesis of stereocomplex-PLA-bionanocomposites and
evaluation of their properties along with possible applications will be discussed. This talk will also include the processing of
these bionanocomposites into caste films and injection molded products for biomedical applications.
Biography
Vimal Katiyar is a Coordinator of Centre of Excellence for Sustainable Polymers in the Department of Chemical Engineering at IIT Guwahati, India. He has
published more than seventy peer reviewed publications in highly reputed journals such as
American Chemical Society
and Nature publishing journals. His recently
featured book entitled as ‘
Bio-based Plastics for Food Packaging Applications
’ is published by Smithers Rapra, UK. He is a co-inventor of numerous granted patents
in various countries including India, USA, Canada, Europe, Japan, etc. His research group has received multiple national and international innovation awards in the
development of bio-based polymeric products, nanobiomaterials and related technologies.
vkatiyar@iitg.ernet.inVimal Katiyar
Indian Institute of Technology Guwahati, India
Vimal Katiyar, J Material Sci Eng 2018, Volume 7
DOI: 10.4172/2169-0022-C7-109