biopolymers-and-bioplastics-2016_posters-accepted-abstracts

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Biopolymers and Bioplastics 2016
September 12-14, 2016
Volume 7, Issue 5(Suppl) J Bioremed Biodeg 2016
ISSN: 2155-6199 JBRBD, an open access journal
conferenceseries .com
September 12-14, 2016 San Antonio, USA
3rd International Conference and Exhibition onBiopolymers & Bioplastics
J Bioremed Biodeg 2016, 7:5(Suppl)
Development of plasticized starch biocomposites blended in an original mixer (RMX) based on elongational
flows
M Ragoubi, C Terrié and N Leblanc
Institut polytechnique Lasalle Beauvais, France
This study focuses on the thermo mechanical and rheological behaviour of starch biocomposites formulated by elongational
mixer and reactor (RMX). Compared to existing laboratory mixers, RMX device process is characterized by a high
contribution of elongational flow and the ability to directly measure the rheological properties of blends. The idea is to promote
the elongational flow during mixing of different components and increase the dispersive mixing efficiency. Using RMX, various
formulations based on plasticized starch matrix (TPS) have been carried out by varying plasticizer amount, flax fibres content
and flax fibers length. After RMX-thermocompression moulding, the impact of process parameters (temperature, speed
screw, mixing cycle number) on the viscosity of plasticized starch blends are investigated. Furthermore, morphological and
microscopic data on TPS/flax blends prove the high distributive and dispersive mixing efficiency as compared to a classical
rotational batch mixer. The evolution of microstructural properties of the starch based biocomposites are also analyzed by
X-ray diffraction (DRX), thermo mechanical (DMA) and thermal degradation (TGA) analysis.
Cationic xylan-METAC copolymer as a flocculant for clay suspensions
Mohan Konduri, Shoujuan Wang and Pedram Fatehi
Lakehead University, Canada
Now a days removal of clay waste from waste water of various industries is a major challenge due to their charge and
properties. Flocculation using synthetic polymers has been regarded as a promising process to address this problem.
However, there is a growing concern about the use of synthetic polymers in wastewater. To tackle with this problem, natural
based flocculants (i.e. biodegradable flocculants) should be used for this purpose. In this work, xylan based cationic flocculant
[xylan-2-(methacryloyloxy)ethyl] trimethylammonium chloride (METAC)) was produced and was characterized using gel
permeation chromatography, infrared (FTIR) and elemental analysis. The flocculation potential of produced biopolymer in
removal of clay wastes was studied using two different types of clay suspensions viz., kaolin and bentonite. The biopolymer was
found to be effective in removal of both types of clays via adsorbing on their surface. The removal of clay from suspensions was
due to charge neutralization and polymer bridging mechanisms, which is evident from decrease in relative turbidity of clay
suspensions and change in zeta potential of clay particles. The percentage removal of bentonite and kaolin clay particles from
suspensions was found to be 98 and 80% respectively. The removal of clay particles depends on amount of flocculant adsorbed
on their surface. The floc growth and breakage studies also confirmed the flocculation potential of produced biopolymer. This
work suggest that cationic xylan (biopolymer) can serves as an effective flocculant in removal of clay wastes present in waste
water of various industries.