Mechanical Properties of Capsaicum Oleoresin (CO) Impregnated in Porous Silica/Polylactic Acid (PLA) Composites

Laongdaw Techawinyutham; Rapeephun Dangtungee

doi:10.4028/www.scientific.net/KEM.801.115

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Mechanical Properties of Capsaicum Oleoresin (CO) Impregnated in Porous Silica/Polylactic Acid (PLA) Composites

Abstract:

Flexibility of Polylactic acid (PLA) is improved by mixing capsicum oleoresin (CO) impregnated in mesoporous silica (SiCO) in the PLA matrix with SiCO concentration of 0.77 wt%, 1.54 wt% and 3.08 wt%. CO extracted from hot chili (Capsicum frutescens linn) is natural oil, non-toxic and good for environment. The SiCO/PLA composites were investigated water absorption, tear resistance and hardness properties. The improvement of tear strength of SiCO/PLA composites is due to increase in chain mobility of PLA because of the presence of capsicum oil. Hardness of the PLA composites slightly reduces with increasing SiCO concentration. SiCO/PLA composites are suitable for food packaging due to slightly water absorption. SiCO can improve flexibility of PLA. The optimum content of SiCO in PLA matrix is 3.08 wt%.

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Periodical:

Key Engineering Materials (Volume 801)

Pages:

115-120

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.801.115

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Online since:

May 2019

Authors:

Laongdaw Techawinyutham*, Rapeephun Dangtungee

Keywords:

Biopolymers Composite Film, Capsicum Oleoresin (CO), Polylactic Acid (PLA), Silica

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