Open AccessPhysical characterization of biopolymers with starch from potato and cassava organic wastes polymerized in water
Author(s) -
Durán Quintana,
Damelys Sanabria,
Heizir F. de Castro,
Karina Roa,
Ruelas Paredes,
Yordin Vargas
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2139/1/012015
Subject(s) - starch , biopolymer , plasticizer , shrinkage , potato starch , water content , materials science , moisture , food science , pulp and paper industry , polymer , composite material , chemistry , geotechnical engineering , engineering
During the last decades, the use of plastic has become indispensable for the daily life of people; the global production of these materials reaches approximately more than 200 million tons per year. For this reason, research has been carried out to manufacture substitute materials that have similar physical properties, such as starch-based biopolymers; in this research we initially characterized the physical properties of a biopolymer based on starch polymerized in water, without plasticizers, and also to find an optimal proportion between starch and water; in this way an experimental design is generated where the proportion of these two varies, in which starch extracted from potato and cassava wastes was used. These biopolymers were characterized for linear shrinkage, density, and hardness properties. The results of the characterizations showed that the proportions lower than 1:5 starch-water present difficulty to process and deficiency in the homogeneity of the mixture, while the proportions higher than 1:5 presented a linear shrinkage higher than 82. 69% and a loss in weight higher than 74.45%; on the other hand, the hardness analysis showed an average of 79 points on the shore A scale and density with an average of 1.055 g/cm 3 , the results determined that the most adequate proportion is 1:6.5 starch-water.