Agama Islam Society

Agama Islam Society

Jamiatu Mulslim Mindanao

Darussalam Matampay, Marawi city

In Partial Fulfillment of the Requirements in

PHYSICS IV

WHEAT PASTE

(Investigatory Project)

Sub to:

Ms. Zaalica Sultan

Sub by:

Mariam B. Hadji Said

Norminah Camad

Nasroden Mamarinta

Norhanah Hadji Ali

ACKNOWLEDGEMENT

We the researcher was very thankful for fulfilling our

WHEAT PASTE

Wheat paste (also known as flour paste, or simply paste) is a gel or liquid adhesive made from wheat flour or starch and water. It has been used since antiquity for various arts and crafts such as book binding, dcoupage, collage, papier-mch, and adhering paper posters and notices to walls. Closely resembling wallpaper paste, a crude wheat flour paste can be made by mixing roughly equal portions of flour and water and heating until the mixture thickens.

A critical difference among wheat pastes is the division between those made from flour and those made from starch. Vegetable flours contain both gluten and starch. Over time the gluten in a flour paste cross-links, making it very difficult to release the adhesive. Using only starch, a fine quality, fully reversible paste can be produced. The latter is the standard adhesive for paper conservation.

Besides wheat, other vegetables also are processed into flours and starches from which pastes can be made: characteristics (e.g. strength, reversibility) vary with the plant species, manufacturer's processing, and recipe of the end-user.

UsesThe mixture of vegetable starch and water has been used as an adhesive for centuries. Street and concert promoters use wheat paste to put up posters. Crafts people use it in papier-mch or decoupage, and professional bookbinders use it for archival quality repair.

A common use is in the construction of chains of paper rings made from colored construction paper.

In the fine arts, wheat starch paste is often used in preparation and presentation. A good wheat starch paste has a strength compatible with many paper artifacts, remains reversible over time, is neither too acidic or alkaline, and is white. This article takes you through the simple steps for making your own.

Wheatpaste will glue any porous paper to another with ease and dry to a rock-hard finish. It will also stick to many other porous materials such as concrete and wood. You can apply wheatpaste with a paintbrush, foam brush, roller, or just a piece of cardboard will work fine. Like all glues, apply only a very thin coat to both materials and stick together for best strength. If you are doing anything like paper mache, soaking your pieces in wheatpaste and using them will create help create very rigid structures. The glue will harden fairly quickly (an hour or two), but the paper will still be very wet for at least one day. A fan can speed up the process.

Examples:graffiti posters (link to Stencil Revolution forum, they have a nice discussion on wheatpaste)paper mache (happens to be the only other instructable with a wheatpaste recipie)decoupage (nice for covering tables)collageWheatpaste

From Wikipedia, the free encyclopedia

A poster by Morley adhered with wheat paste in Los Angeles.

Activists and various subculture proponents often use this adhesive to flypost propaganda and artwork. It has also commonly been used by commercial bill posters since the nineteenth century. In particular, it was widely used by nineteenth and twentieth century circus bill posters, who developed a substantial culture around paste manufacture and postering campaigns.[1] In the field of alcohol and nightclub advertising, in the 1890s, Henri de Toulouse-Lautrec's posters were so popular that instructions were published on how to peel down the pasted posters without damage.[2]Until the 1970s, commercial poster hangers always "cooked" their own paste, but since then many have bought pre-cooked instant pastes.[3] It is applied to the backside of paper then placed on flat surfaces, particularly concrete and metal as it does not adhere well to wood or plastic. Cheap, rough paper such as newsprint, works well, as it can be briefly dipped in the mixture to saturate the fibres.

When hanging unauthorized billboards or signage, to reduce the danger of being apprehended, wheatpasters frequently work in teams or affinity groups. In the US and Canada this process is typically called "wheatpasting" or "poster bombing," even when using commercial wallpaper paste instead of traditional wheat paste. In Britain the term for the verb "wheatpasting" is "flyposting."

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

Boil a pot of water. Pour 3/4 cup (200 mL) water into a saucepan and bring to a boil.

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

2. Whisk the flour and cool water together. Take 3 Tbsp (50 mL) flour or starch and gradually add room temperature water while stirring or whisking. Stop when all the flour is wet and the mixture is runny enough to pour.

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

3. Stir the runny mixture into the boiling water. Once the water is boiled, add the flour mixture while stirring constantly. The mixture will foam as it boils. Stirring or whisking prevents the mixture from boiling over, burning, or forming lumps.To reduce the chance of these mishaps, make a double boiler by placing the pot of wheat paste in a larger pot containing roughly 2 cups (500 mL) boiling water.If it thickens too much to stir, add more water.

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

4. Remove from heat when thick and smooth. This can take anywhere from 2 to 10 minutes.If using starch, the mixture will be translucent when ready.

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

5. Perfect the batch. In many cases the batch will be ready to use once it cools. However, it's easy to make adjustments while the goop is still hot: If the batch isn't sticky enough, stir in sugar or white glue. Begin with 3 Tbsp (50 mL) sugar or glue and add more if necessary.To preserve the mixture longer and deter bugs from eating it, mix in a small amount of copper sulphate.

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

6. Let the mixture cool. Once at room temperature it should hold together as a gluey gelatinous paste. Each brand of flour and starch is a little different, so the exact consistency will vary. As long as there are no lumps it should work well.To remove lumps from the paste, strain it through a thin sieve or pair of tights.

HYPERLINK "http://www.wikihow.com/Make-Wheat-Paste"

7. Store in a sealed container in the refrigerator. Left at room temperature, the paste will begin to smell after 2 days and grow mold within a week. Even for pastes without copper sulphate, there are easy ways to extend this shelf life: Reheat unused paste in a covered container after each project to sterilize it.Pour a little water on top of the paste for storage. If the paste is cool the water will sit on top of the paste and prevent mold from reaching it. Pour out the water again before using.

The words paste, pasta, and pastry have a common heritage, deriving from the Late Latin pasta (dough or pastry cake), itself deriving from the ancient Greek pasta, meaning "barley porridge". In English, paste is used as would be "dough" in the 12th century, or "glue" in the 15th century.

This study can give benefits to the people specially to the poor once, to have a good business and also to save money for their other needs. Specially for those street artists. They just can make their own paste instead of buying a expensive commercial one.

We the researcher would recommended that we use vegetable starch to create a Paste instead of the commercial one. Making your own paste is more cheaper than the commercial one. Weve known that wheat paste is more compatible.

In conclusion, making your own paste is more cheaper