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The Effects of the Printing Ink on the Newspapers

F.2A Group 4. The Effects of the Printing Ink on the Newspapers. Alcohol. Isopropanol, etc. Organic solvent. Toluene, trichloroethylene, perchlorcethylene, ethylene glycol, etc. Resin. Acrylic resin, epoxy resin, etc. Dyes. Aniline, toluidine, azo dyes, etc. Others.

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The Effects of the Printing Ink on the Newspapers

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  1. F.2A Group 4 The Effects of the Printing Ink on the Newspapers

  2. Alcohol Isopropanol, etc. Organic solvent Toluene, trichloroethylene, perchlorcethylene, ethylene glycol, etc. Resin Acrylic resin, epoxy resin, etc. Dyes Aniline, toluidine, azo dyes, etc. Others Oxalic acid, plasticizer, wax, etc. The chemicals in the printing ink There are many chemicals in the printing ink. We divide them into five groups:

  3. The effects of chemicals Some of the chemicals have bad effect to our body. They will affect our health through 3 ways: 1. Touch the printing ink for a long time 2. Swallow the ink carelessly 3. Smell the ink for a long time (only printing technician)

  4. The main impacts are… • Stimulate the skin • Stimulate the respiratory tract • Damage the central nervous system • Damage the liver • They may cause… • Paralysis • Pulmonary edema

  5. Less ink comes out More ink comes out The scale

  6. Title: The level of the printing ink Materials and apparatus: Student Standard Ming Pao The Standard Newspapers Sing Tao Daily Headline Daily am730 Experiment (1)

  7. Pieces of paper Materials Cotton sheet Pieces of tissue Here are the materials and apparatus(left)

  8. Procedure: • Choose the black area of the newspaper. • Use a piece of tissue/cotton/paper to rub on the black area five times by using the same strength. • The result of the tissues is shown below:

  9. The result of the cottonsis shown below:

  10. The result of the papersis shown below: Conclusion:The ink of Sing Tao Daily and Ming Pao goes out from the newspaper difficultly. The ink of Student Standard and am730 goes out from the newspaper easily.

  11. Here are the materials and apparatus: Experiment (2) • Title: The newspapers in the soapy water • Materials and apparatus: • Those six kinds of newspaper • 2. A large amount of water • 3. A bottle of foaming soap 4. A chopstick

  12. Procedure: 1. Put about 700 ml tap water into the basin and add two big drops of foaming soap. 2. Put the newspaper (the size is about 37.5cm x 29cm) into it.

  13. 3. Stir it with a chopstick for 1 minute. 4. The result is shown: (right)

  14. Failed! • Conclusion: • The results of six kinds of newspaper are the same. • We can just see that the water becomes dirty. • The result of the experiment is not clear. • So this experiment is failed…..

  15. Procedure: 1. Cut out the suitable area of the newspaper. ( One side is all black. The other side is only words. The size is 3cm x 3cm ) Put it into a small tray. Experiment (3) Title: The newspapers in the alcohol Materials and apparatus: 1. 100ml alcohol (70%) 2. Those six kinds of newspaper 3. Six small trays 4. A pair of scissors (for cutting) 5. A ruler (for measuring) 6. Dropper

  16. Less ink dissolves in it More ink dissolves in it The newspaper become translucent! The colour of alcohol will change into purpleor pink! We will make a scale for the colour changing of the alcohol after the ink dissolves in it…

  17. 2. Add 5ml alcohol into the small tray with a dropper. 3. After 2 minutes, the result is below:

  18. The levels of different printing ink are shown below: Conclusion: The ink of Student Standard and AM730 dissolves in the alcohol easily. The ink of Ming Pao dissolves in the alcohol difficultly.

  19. The summary • Through this project, we can tell the students that : • The chemicals in the printing ink can affect our body health. • When you are reading Student Standard and am730,be more careful. • After reading newspaper, we must wash our hands. • Then, we can read the newspapers more healthily.

  20. References: • http://www.iosh.gov.tw/data/f2/sp64-4.htm • Wikipedia There maybe different chemicals in different newspapers,but we can’t find them out. We can only find the most common chemicals. We feel sorry about this.

  21. The End

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