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Periyasami, Govindasami
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Publications (5/5 displayed)
- 2024Foam stability and thermo-mechanical properties of micro/nano filler loaded castor oil based flexible polyurethane foamcitations
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- 2023Insight into the Optoelectronic Nature and Mechanical Stability of Binary Chalcogenides: A First‐Principles Studycitations
- 2021The antimicrobial activity of silver nanoparticles biocomposite films depends on the silver ions release behaviourcitations
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article
Foam stability and thermo-mechanical properties of micro/nano filler loaded castor oil based flexible polyurethane foam
Abstract
<jats:title>Abstract</jats:title><jats:p>Use of fillers in polymers is to improve thermo-mechanical properties of the resulting material. Fillers are also used in polymeric foam as cell openers. Flexible polyurethane (PU) foams undergo major loss in structural stability when synthetic polyol is replaced with castor oil in the formulation as an alternate polyol. This study probes the effect of various micro and nano-fillers on PU foams prepared using blend polyol containing castor oil and synthetic polyol at a ratio of 1:1. Physical and cellular properties such as foam height, cell diameter, strut thickness and cell number density were evaluated to probe the structural stability of the foam. All foams prepared were found stable while it was found that the densities of the PU foams synthesized were greater than that of the conventional PU foams. Addition of fillers found to enhance thermal and mechanical properties of the foam. Moreover, all foam samples were found to observe thermal stability over and above 258 °C. Minimum glass transition temperature was recorded for 15% HG samples (i.e., −35.5 °C). Highest tensile strength was observed for 15% Si samples whereas, highest elongation was observed for 10% NC.</jats:p>