ABSTRACT
The study aims to produce biodegradable plastic using cassava starch as its main component. Cassava starch was mixed with water, cornstarch and cooking oil
INTRODUCTION
There is an increasing demand for plastic, from the highly technological fields of electronics, fiber optics, and pharmaceuticals to the basic necessities such as sandwich wrappers and garbage bags. This high demand for plastics, however, has been a major contributor to the world's present garbage problems.
Because plastics are made of polymers, starch is a very favorable raw material in plastic-making.
A. Background of the study
Due to the overwhelming demand of plastic bag production and its effects on our environment, our landfills are crammed with these non biodegradable materials.
REVIEW OF RELATED LITERATURE
The word plastic came from the Greek word plastikos, meaning capable of being molded. Plastics can be as hard as metal or as soft as silk. They can take any shape in almost any form due to the versatility of the carbon, the most common backbone of polymer chains.
METHODOLOGY
In order to determine the right combination, two batches with different proportions were prepared.
Batch 1 contains 1 tbsp. of corn starch, 1.5 tbsp. of water, 3-5 drops of cooking oil. Batch 2 contains 1 tbsp. of corn starch, 2 tbsp. of water, 5-9 drops of cooking oil.
The quality of plastic produced greatly depends on the proportion of additives used. Any difference in the formulation may bring about changes in terms of flexibility, color, transparency and texture. The difference in the amount of starch had an effect in the texture and transparency of the samples (see batch 2). The different proportions were formulated to test which of the samples from the different formulations would exhibit the best