biopolymers-meeting-2017-scientifictracks-abstracts

14 / 14

Volume 3, Issue 4 (Suppl) Polym Sci
ISSN: 2471-9935 Polym Sci, an open access journal
October 12-13, 2017 Osaka, Japan
Annual Meeting on
Biopolymers and Drug Delivery Systems
Biopolymers Meeting 2017
October 12-13 2017
Page 39
Effects of rice straw-based polyol on the thermo physical properties of rigid polyurethane foam
Kriztine Magadan-Icalina, Rosal Jane M Ruda and Arnold A Lubguban
Mindanao State University, Iligan Institute of Technology, Philippines
Statement of the Problem: Vegetable oils and lignocellulosic biomass are two major types of bio-based resources gaining interest for
bio-based polyols for Poly Urethane (PU) production. However, the consumption of huge amounts of vegetable oils could result in a
shortage of vegetable oils and will cause the increase in food prices. Therefore, lignocellulosic biomass is seen as a better alternative
raw material for PU production. Various kinds of lignocellulosic biomass have been used for the production of bio-based PU foams
but the use of lignocellulosic rice straw is not yet explored. Thus, the study aims to develop PU rigid foam from rice straw-based polyol
and investigate the effect of isocyanate index on the thermo physical properties of the foam.
Methodology &Theoretical Orientation: PU foams were prepared by reacting isocyanates in varying indices with polyols containing
15% of rice straw-based polyol and 85% petroleum-based polyol and their thermal conductivity, density and compressive strength
were determined.
Findings: PU foams with no biopolyol replacement have superior thermal andmechanical properties over the PU foams with biopolyol
replacement. However, those with biopolyol replacement were significant less dense compared to the commercial formulation. This
could indicate possible application in industries where lightweight materials are important. Thermal characterization of the foam
samples at different isocyanate indices indicate that increasing the isocyanate content improves insulation property of the PU as evident
with the decreasing conductivity. This is also true with compressive strength. The index is directly proportional to the compressive
strength. Density, on the other hand, is directly proportional to the isocyanate content.
Conclusion & Significance: Successful development of PU rigid foam products using biomass-based polyols obtained from a
renewable feed stock rice straw offers a practical and economic procedure for potential scale-up and commercialization.
Biography
Kriztine Magadan-Icalina is a licensed Chemical Engineer and is currently pursuing her Master of Science in Material Science and Engineering in Mindanao State
University, Iligan Institute of Technology.
Kriztine Magadan-Icalina et al., Polym Sci 2017, 3:4
DOI: 10.4172/2471-9935-C1-005