Composition of ...
Materials: rubber bladder, cowhide or natural or artificial leather, air, and rubber or string laces
Main Chemicals, Compounds, Components
Nitrile butadiene rubber (NBR) It’s a synthetic rubber and is the rubber is used on the laces of the football.
The inside bladder is a synthetic rubber which is filled with air to give it it its form and shape. The rubber is made of Butyl rubber. Butyl rubber is 98 percent polyisobutylene and 2 percent isoprene. Polyisobutylene can be stretched at extreme distances and it can form back to its beginning shape. Isoprene is a deadly, clear liquid. It's usually used in the production of natural rubber.
Composition leather creates a more easier cutting surface . The leather is man-made from leather fibres. The leather is easier and allows for more precise cuts and it better protects against the elements such as rain or wetness.
The leather skin, is made of amino acids that combine into a collagen including Glycine, Alanine, Proline, Hydroxy Proline, Arginine.
Skin Amino acids
How is leather formed?
How Butyl Rubber is formed?
Natural Rubber can be made from the wild rubber tree by tapping the sap out of the tree. The trees can be found in South America. Originally acid was added to latex to make the sap more solid. But today liquid latex is sent to industrial factories and is made by the machines.
Leather- the football can be made of pure leather or a composite leather. Real leather balls are the highest grade but more expensive. Composite leather football is the most commonly used. They are more resistant to water and have a better grip.
Composite leather is made by taking leather materials and combining a binding material, a few softeners, and some cushioning agents. The cushioning agents can be a natural material such as synthetic or natural latex and the binding material can be made from polymeric foam or bubbles. All these methods go into the making of composite leather.
Isoprene- Is a naturally occurring material. It made industrially by changing oils. About 95% of the making of isoprene is and to form a synthetic item of natural rubber
The first Football game was played in 1869. It comes from the early game of rugby. Over the years the game of Football has evolved into the game we know as today both in the rules how it’s played and also the equipment used in the sport especially the Football!
The cowhide is tanned, cut into a oval shapes. The two hides are sewn together and rubber bladder is placed inside. And it is filled with air and the laces are tied and sewn in forming the finished product.
Where is it made?
The NFL official footballs are hand made by Wilson Sporting Goods in a factory in Ada, Ohio. But footballs are created in other factories world wide.
How it Works?
The rubber bladder is filled with air giving it its shape and form and the rubber allows for the ball to bounce and be kicked distances. The shape of the ball gives it a more aerodynamic shape to fly easier when thrown and the shape creates the ball to have unanticipated bounces giving another factor to the game. The leather material that encases the ball forms protection to the bladder inside so it doesn’t easily deflate or lose its shape. The leather also protects against the elements and lessens the chance of natural defect or decay. The leather also adds to the bounciness to the ball giving it some structure. The laces sewn together holds the ball in place to keep its shape. The laces also help for a better grip on the ball and allow the ball to be thrown easier. All the materials hold a certain role in how the ball works.
How a ball bounces:
used for composition of the football
Used for information of tanning leather and the chemical composition of the skin of leather
Used for the Background information of the game of Football
Used to understand what the laces of the ball are made of
Used to understand how leather is made and tanned
Used to understand how the butyl rubber is formed through cationic addition polymerization.
Used to understand what butyl rubber made and how the air bladder is made of butyl rubber
Used to more history of the game of football and it’s origins
Used for the background research of natural rubber and how sap is taken from the
Used to describe the making of composite leather in the Background research
About the Author
Ben Browne is a junior at Senior High. He is a good student with a GPA of 3.8. Ben also is an athlete by lettering in Varsity Football. He plans to go to Montana State in Bozeman for college to major in Mechanical Engineering and minor in Aerospace Engineering.