IMPROVING THE PHYSICAL PROPERTIES OF STARCH AND STARCH – CARBOXYMETHYL CELLULOSE COMPOSITE BIODEGRADABLE FILMS

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ALMASI H.; GHANBARZADEH BABAK; PEZESHKI NAJAFABADI A.

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Journal: JOURNAL OF FOOD SCIENCE AND TECHNOLOGY Year:2009 | Volume:6 | Issue:3 Page(s): 1-11

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Title

IMPROVING THE PHYSICAL PROPERTIES OF STARCH AND STARCH – CARBOXYMETHYL CELLULOSE COMPOSITE BIODEGRADABLE FILMS

Author(s)

ALMASI H. | GHANBARZADEH BABAK | PEZESHKI NAJAFABADI A. | Issue Writer Certificate

Keywords

CORN STARCHQ2

CITRIC ACIDQ2

CARBOXYMETHYL CELLULOSEQ2

WATER VAPOR PERMEABILITYQ2

MECHANICAL PROPERTIESQ2

Abstract

Starch is the most abundant carbohydrate biopolymer that has excellent film-forming properties. But poor resistance to water vapour transport and poor mechanical properties are of its main problems. In this study a series of corn starch films with varying concentrations (0–20 %W/W) of citric acid and carboxymethyl cellulose (CMC) were prepared by casting method at 60°C. The effects of citric acid on water vapor permeability (WVP), moisture absorption, solubility and mechanical properties were investigated. The WVP decreased from 4.63 to 2.61×10-7 g/m.h.Pa as the citric acid percentage increased from 0 to 10%W/W. When the citric acid content of the films reached to 20%W/W, WVP increased about 15%. Moisture absorption and mechanical properties exhibited similar trends. In the presence of 10% citric acid, the introduction of CMC improved the moisture resistance of the composites. Using of 20%W/W CMC in the formulation increased ultimate tensile strength (UTS) by more than 59% compared to neat starch film. However, by increasing of the CMC concentration, the strain to break (SB) did not reduce significantly.

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APA: Copy

ALMASI, H., GHANBARZADEH, BABAK, & PEZESHKI NAJAFABADI, A.. (2009). IMPROVING THE PHYSICAL PROPERTIES OF STARCH AND STARCH – CARBOXYMETHYL CELLULOSE COMPOSITE BIODEGRADABLE FILMS. IRANIAN JOURNAL OF FOOD SCIENCE AND TECHNOLOGY, 6(3), 1-11. SID. https://sid.ir/paper/72209/en

Vancouver: Copy

ALMASI H., GHANBARZADEH BABAK, PEZESHKI NAJAFABADI A.. IMPROVING THE PHYSICAL PROPERTIES OF STARCH AND STARCH – CARBOXYMETHYL CELLULOSE COMPOSITE BIODEGRADABLE FILMS. IRANIAN JOURNAL OF FOOD SCIENCE AND TECHNOLOGY[Internet]. 2009;6(3):1-11. Available from: https://sid.ir/paper/72209/en

IEEE: Copy

H. ALMASI, BABAK GHANBARZADEH, and A. PEZESHKI NAJAFABADI, “IMPROVING THE PHYSICAL PROPERTIES OF STARCH AND STARCH – CARBOXYMETHYL CELLULOSE COMPOSITE BIODEGRADABLE FILMS,” IRANIAN JOURNAL OF FOOD SCIENCE AND TECHNOLOGY, vol. 6, no. 3, pp. 1–11, 2009, [Online]. Available: https://sid.ir/paper/72209/en

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