Investigatory Project Essay Sample
The aim of the first portion of the survey was to happen the best ratio of ink utilizing C from used batteries and wood coal as pigments. The ink was evaluated on the footing of how much pigment is suspended in the mixture and their shelf life. The 2nd portion was aimed at the production of C paper. The best sorts of ink were tested on two mediums. voucher bond and onion tegument. They were besides tested for efficiency in footings of the figure of coatings needed. The C paper was evaluated on the footing of lucidity. spruceness of the print and general acceptableness.
The concluding sample made usage of two coatings of the ink mixture utilizing C black. with voucher bond as the medium. The pigment ( carbon black ) to vehicle ( glycerin ) ratio of 1 g: 6 milliliter and 1 g: 7 milliliter was used utilizing C black as pigment with glycerin as vehicle. Although the commercial bond paper has better quality. since it uses more technologically advanced methods. the usage of the experimental C paper was acceptable. INTRODUCTION Carbon paper has many utilizations. It has a high demand in schools. offices and other establishments. The ink used in the production of commercial C paper is expensive due to its high production costs. Because of its high cost and increasing demand. there arises a demand for a cheaper replacement. The survey besides aims to assist cut down the jobs in disposing used batteries by be printed ; and ( 5 ) nature of pigment. Glycerol is syrupy and is easy absorbed by paper and. therefore. makes it a good vehicle. Burned wood is a good beginning of wood coal. Batteries have black atoms called black mix. which is chiefly composed of C black. acetylene black doing good usage of them.
REVIEW OF RELATED LITERATURE
Ink is a mixture of vehicle ( liquid constituent and dissolver ) . pigment ( colourising affair ) and other substances added to leave particular qualities such as a binder. Carbon is normally used as pigment because of its low oil soaking up. easiness of scattering and low scratch to plate ware. Carbon is chemically inert and infusible at atmospheric force per unit area. which makes it an indispensable portion in the black pigment used in books. magazines. newspapers. C paper. etc. Two good beginnings of pigments that are carbonous in nature are wood coal and the black mix found in used batteries. These beginnings are much cheaper than the usual black pigments such as C black in black lead and carbon black. In order for the pigment to thoroughly dissolve with the vehicle. the pigment must be pulverized to really all right atoms. The pigment affects the belongingss of ink such as rubric and opacity.
The vehicle on the other manus must accommodate the undermentioned conditions: ( 1 ) the printing system used ; ( 2 ) category and velocity ; ( 3 ) drying imperativeness required ; ( 4 ) category and texture of the surface to Coconut oil and dextrin were tested for their possible as ink binders. Harmonizing to the consequences. coconut oil was a better binder than dextrin. METHODOLOGY Black mix was obtained by opening the protective lodging of a drycell battery and exposing its C content. Then. the black mix was removed and land into really all right atoms utilizing a howitzer and stamp. Afterwards. it was sieved through a all right screen to obtain the finest consistence. On the other manus. wood coal was besides finely pulverized. It was so assorted with H2O and placed in a one-litre beaker. The mixture was allowed to settle for two yearss inside the covered and manganese dioxide. The Cs obtained from both beginnings are carbonous in nature. doing them good beginnings of black pigment.
After two yearss. the wood coal pigments were heated to let vaporization of extra wet. In fixing the ink. the wood coal and C black pigments were combined with glycerin ( vehicle ) and coconut oil ( binder ) in different proportions runing from 1 g: 10 milliliter: 1 milliliter ( pigment: vehicle: binder ratio ) to 2 g: 14 milliliter: 2 milliliter. The solution was exhaustively assorted utilizing a stirring rod until wholly dispersed. Finally. the mixture was heated for five ( 5 ) proceedingss under medium heat and was allowed to chill down before rating. The best ratio utilizing each pigment was so compared to find which ink is more suited for C paper production. The samples were
RESULTS AND DISCUSSIONS The onion paper appeared to be excessively thin to be used as a medium because it has the inclination to be torn even after one coating. The voucher bond was proven to be the better option. It takes five ( 5 ) proceedingss for a solution with a ratio of 1 gm ( pigment ) : 6 milliliter ( vehicle ) to dry up. The solution with a ratio of 1g: 7 milliliters took six ( 6 ) proceedingss to dry. The sample which used two coatings was proven to be most practical. SUMMARY AND CONCLUSION The experimental C paper is acceptable plenty to be used as a replacement for commercial C paper. The experiment was able to turn out that the pigment obtained from battery C is better and cheaper than those from wood coal.
Evaluated for smoothness. consistence. and soaking up. The ink samples. runing from one to four coatings. were applied on the onion tegument and voucher bond. The different C documents were tested and observed for their drying clip. soundness and lucidity of print. After finding the best sample. a study was conducted on 20 pupils utilizing the experimental C paper and a commercial C paper.
Research workers: Jonas Don Castelo Lloyd Gonzales Marcelino Quito. Jr.
Miss Juanita Cruz Research Adviser Note: No portion of this article may be used or reproduced in any signifier whatsoever without written permission from the Philippine Science High School. Diliman. Quezon City. except in the instance of brief commendation as embodied in the Torahs of scientific articles and reappraisals.