Statistical analysis of the factors that influenced the mechanical properties improvement of cassava starch films

The use of natural polymeric materials has been growing notably in order to replace packaging from non-renewable sources. In this sense, cassava starch is a very promising natural polymer for this purpose due to its ease of production, the low cost, besides being biodegradable. However, cassava starch biofilms when dried have a brittle character requiring the addition of a plasticizer. Thus, biofilms were synthesized based on cassava starch (3%) with different percentages of glycerol (5%, 10%, 20%, 40% and 50%) to evaluate changes in physic-chemical and mechanical properties. The results indicate that the increase in percentage of glycerol contributed directly to the increase of water vapor permeability while decreases the contact angle and modulus of elasticity of cassava starch films.

Download Full-text

Morphological, barrier, and mechanical properties of cassava starch films reinforced with cellulose and starch nanoparticles

Journal of Applied Polymer Science ◽

10.1002/app.47001 ◽

2018 ◽

Vol 136 (4) ◽

pp. 47001 ◽

Cited By ~ 6

Author(s):

J. S. Santana ◽

É. K. de Carvalho Costa ◽

P. R. Rodrigues ◽

P. R. C. Correia ◽

R. S. Cruz ◽

...

Keyword(s):

Mechanical Properties ◽

Cassava Starch ◽

Starch Nanoparticles ◽

Starch Films

Download Full-text

Optimization of factors to obtain cassava starch films with improved mechanical properties

Journal of Physics Conference Series ◽

10.1088/1742-6596/885/1/012001 ◽

2017 ◽

Vol 885 ◽

pp. 012001

Author(s):

Mayra Monteiro ◽

Victor Oliveira ◽

Francisco Santos ◽

Eduardo Barros Neto ◽

Karyn Silva ◽

...

Keyword(s):

Mechanical Properties ◽

Cassava Starch ◽

Starch Films

Download Full-text

Mechanical properties of cassava starch films as affected by different plasticizers and different relative humidity conditions

International Journal of Food Studies ◽

10.7455/ijfs.v4i1.293 ◽

2015 ◽

Vol 4 (1) ◽

Author(s):

Jeannine Bonilla Lagos ◽

Nívea M. Vicentini ◽

Rodolfo M.C. Dos Santos ◽

Ana Mônica Q.B. Bittante ◽

Paulo J. A. Sobral

Keyword(s):

Mechanical Properties ◽

Relative Humidity ◽

Cassava Starch ◽

Starch Films

The influence of plasticizer type (glycerol and sorbitol), its content (starch:plasticizer ratio of 1:0.15; 1:0.20; 1:0.25 and 1:0.30) and the relative humidity conditions (43, 58, 75 and 85%) on the mechanical properties of cassava starch films was studied. Both plasticizers seemed to integrate homogeneously in the film matrix. The incorporation of different concentrations of plasticizers affected the mechanical properties of the cassava starch films. Plasticizer ratio directly influenced the force values of the films, they showed significant flexibility when the plasticizer proportion was increased in the formulation. Under conditions of low relative humidity, sorbitol produced films more resistant to puncture than glycerol. Qualitatively, all the films were less brittle when the plasticizers were incorporated.

Download Full-text