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Characterization of Corn Starch Films Reinforced with CaCO3 Nanoparticles

by Xi, Tingting , Xiong, Liu , Li, Ying , Sun, Qingjie

in Biocompatible Materials / Biodegradation / Biology and Life Sciences / Calcium carbonate / Calcium Carbonate - chemistry / Carbohydrates / Cassava / Composite materials / Conditioned stimulus / Corn / Elastic Modulus / Electron microscopy / Elongation / Engineering / Food science / Fracture mechanics / Fractures / Glycerol / Mechanical properties / Microscopy, Electron, Scanning / Modulus of elasticity / Nanocomposites / Nanocomposites - chemistry / Nanocomposites - ultrastructure / Nanoparticles / Nanoparticles - chemistry / Nanoparticles - ultrastructure / Opacity / Optical properties / Permeability / Polymers / Scanning electron microscopy / Solubility / Starch / Starch - chemistry / Tensile properties / Tensile Strength / Water vapor / X-ray diffraction / Zea mays / Zea mays - chemistry / Zeolites

2014

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Characterization of Corn Starch Films Reinforced with CaCO3 Nanoparticles

by Xi, Tingting , Xiong, Liu , Li, Ying , Sun, Qingjie

2014

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Characterization of Corn Starch Films Reinforced with CaCO3 Nanoparticles

by Xi, Tingting , Xiong, Liu , Li, Ying , Sun, Qingjie

2014

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Journal Article

Characterization of Corn Starch Films Reinforced with CaCO3 Nanoparticles

Xi, Tingting,

Xiong, Liu,

Li, Ying,

Sun, Qingjie

2014

Overview

The characterization of corn starch (CS) films impregnated with CaCO3 nanoparticles was investigated. Criteria such as morphology, crystallinity, water vapor permeability (WVP), opacity, and mechanical properties were the focus of the investigation. It was found that the CaCO3 contents had significant effects on the tensile properties of the nanocomposite films. The addition of CaCO3 nanoparticles to the CS films significantly increased tensile strength from 1.40 to 2.24 MPa, elongation from 79.21 to 118.98%, and Young's modulus from 1.82 to 2.41 MPa. The incorporation of CaCO3 nanoparticles increased the opacity of films, lowered the degree of WVP and film solubility value compared to those of the CS films. The results of scanning electron microscopy (SEM) showed that with the increase of CaCO3 nanoparticles content in starch films, the roughness of the films increased, and pores or cavities were found on the surface of the films, while small cracks were observed in the structures of the fractured surfaces. X-ray diffraction showed that the addition of nanoparticles increased the peaks in the intensity of films.

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Publisher

Public Library of Science,Public Library of Science (PLoS)

Subject

Biocompatible Materials

/ Biodegradation

/ Biology and Life Sciences

/ Calcium carbonate

/ Calcium Carbonate - chemistry

/ Carbohydrates

/ Cassava