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Copy of IP
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Plastic bags provide convenience at the store and around the home. Although it has been beneficial in various ways, it has negative impacts as well. INTRODUCTION On the other hand, cogon grass is often seen as a nuisance. The researchers came up with the idea of producing biodegadable plastic from cogon grass to advocate the other uses of this perennial grass. 1. Can cogon grass act as an effective component in biodegradable plastic?
2. Is the product comparable to commercially available plastics in terms of
B. Visual Appearance
D. Cost STATEMENT OF THE PROBLEM 1. Yes, cogon grass can act as an effective component in the biodegradable plastic.
2. Yes, the product is comparable to commercially available plastics in terms of odor, visual appearance, texture and cost. HYPOTHESIS CONCEPTUAL FRAMEWORK INPUT COGON GRASS
COMMERCIAL STARCH PROCESS PREPARATION OF COGON GRASSMAKING OF THE PLASTIC FILMDRYING TESTING FOR CAPACITY OUTPUT BIO PLASTIC
FROM COGON GRASS This study proved to be significant of the following: SIGNIFICANCE OF THE STUDY This study is limited to producing plastic bags not including Tupper wares, plastic cups and the like. It did not consider adjusting the quantity of the other components in producing biodegradable. SCOPE AND DELIMITATIONS Economy of the country Environment Locale of the Study GLYCEROL
glycerin) is a simple polyol
compound. RESEARCH INSTRUMENTATION
•Polyvinyl alcohol has excellent film forming, emulsifying and adhesive properties. It is also resistant to oil, grease and solvents. It is odorless and nontoxic. POLYVINYL ALCOHOL COGON GRASS COMMERCIAL STARCH DAVID, KYLA MARGARETTE
EVITE, PATRICIA MARCELLA
HERNANDEZ, NICOLE GIAN
LUCERO, MA. CLARISSE BIANCA
ORDONEZ, KRISTINE ANN
SANVICTORES, KYLE CLARISSE
VICUNA, JOHN ALEXANDER SAUCE PAN
COLANDER / STRAINER
SPATULA VINEGAR WATER DATA GATHERING PROCEDURE Preparation of Cogon grass 1. Cut the cogon grass into half inch lengths using a pair of scissors.
2.Place the grass into a colander and wash the strands under a running tap to remove dirt and grit. Making of plastic film 2. Place 2 tablespoon starch, 8 tablespoons of water, 2 teaspoon of glycerin, 2 tbsp cogon grass extract and 2 teaspoon of vinegar unto the sauce pan. 1. Prepare a sauce pan. 3. Stir until mixture is smooth.
4. Heat the mixture in a sauce pan over medium – high heat. 5. Continue
stirring. 6. When bubbles appear, turn off the heat. 7. Place unto a flat surface or molder. 8.Leave it out to dry. It takes about one day on a radiator or sunny windowsill, or two days at room temperature. Alternatively, use a drying cabinet. It takes about 90 minutes at 100 °C. 1.Place 25 cm3 water, 2.5 g of commercial starch, the grass and 5 ml of glycerol in the beaker. Set up the tripod and gauze over the Bunsen burner.
2.Place the beaker on top of the gauze and balance a watch glass over the beaker to act as a lid.
3.Heat the mixture to boiling and allow it to boil for around 15 minutes. Take care the mixture does not boil dry.
4.Neutralize the mixture by adding dilute sodium hydroxide, drop by drop, using a pipette. Test the pH of the mixture after each addition by dipping a glass rod into the liquid and touching it to a sheet of universal indicator paper. Continue adding drops of sodium hydroxide until the mixture is neutral (pH 7).
5.You can then add a drop of food coloring and mix thoroughly.
6.Pour the mixture onto a labeled Petri dish or white tile and push it around with the glass rod so that there is an even covering.
7.Repeat the process, but leave out the glycerol. Trial 1 The procedure went smoothly, but was not completed due to time constraints. Trial 2 The experiment was divided into two sets. Table 1: Measurement Adjustments Results and Discussions The problem and background of the study Research Methodology Table 2: Set 1 vs. Set 2 Set 1 The first set was carried out according to the procedure, but adjustments were made to the materials used. First, 100 mL of water was poured into a beaker. Then, 2 tbsp. of cogon grass was added. Finally, the mixture was boiled using a Bunsen burner. However, the first set failed; it did not reach the desired pH level. Set 2 The second set was carried out shortly after the first failed. The second set had all the adjustments made to the first, and it was also made according to procedure. The attempt was a success, with the cogon grass extracts forming a gelatine-like substance. The second set also reached the desired pH level of 7. Changes in the procedure Trial 3 In this third experiment, the researchers used the process stated in chapter 3. This was divided in three sets further explaining what is and what is not included in Table 3. •The use of a substitute for Cogon grass that also provide may be ascertained.
•Avail the chemicals needed before conducting the study.
•Look for factories or contact persons that can help produce desired plastic bags.
•If not, construct an improvised moulder to improve visual appearance of the product.
•It is also suggested that the product undergo the natural drying under the sun instead of the use of drying cabinet.
•Also, the actual biodegradability, durability and reaction to acids and bases can be determined through various tests. The researchers therefore conclude that the project of making biodegradable plastic from cogon grass was a success. Although there were many trials, the researchers acquired the desired product. The plastic is comparable to commercially available plastic but there are many improvements that can be done to enhance the quality of the product. On the first and second trial, the researchers adapted a different process which is not stated in the third chapter and is not advisable. The first trial was not accomplished. The second was decent but was not solidified. The third and last trial was the most successful among the three because it used a less complex procedure compared to the first process and required less materials and ingredients.