I did my project on the chemistry of sheep wool. Sheep wool is the fibrous protein on the outside of a sheep’s body. I chose to do my project on sheep wool because sheep have been a part of my life since I was little. My life has been affected by sheep because since I started showing them in 4-H I have had to learn everything about them.
Composition of ...
Main Chemicals, Compounds, Components
Lanolin is oil that secretes from the sebaceous glands and makes the wool soft. It is a mixture of esters, diesters, hydroxy esters, high-molecular-weight lanolin acids, and high-molecular- weight lanolin alcohols. Alcohols are composed of aliphatic alcohols, sterols which are cholesterol and dihydrocholesterol, and trimethyl sterol which are lanosterol and dihydrolanosterol. Acids are composed of normal, iso, anteiso, and hydroxy acids. The alcohol in lanolin is composed of 25.8% aliphatic alcohols, 38% cholesterol, 27.1% trimethyl sterols, and 5.9% hydrocarbons and undetermined. The acids are 12.1% normal acids, 22.1% iso acids, 26.3% anteiso acids, 27.1% alpha-hydroxy acids, 5.1% omega hydroxy acids, and 7.3% are unknown.
Sulfur makes up 3.7% weight of sheep wool. The sulfur content is because of cystine. Cystine is a double amino acid which contains two sulfur atoms with a disulfide bond: HOOCCH(NH2)CH2S-SCH2CH(NH2)COOH
Wool is a fibrous protein known as keratin. The different proteins are made up of carbon, hydrogen, oxygen, nitrogen, and sulfur. Those chemicals are combined to make different amino acids which are then linked in a ladder formation of polypeptide chains. Sulfur content is from cystine which is a disulfide bond. Wool has a three dimensional structure, it is held together by the hydrophobic effect and electrostatic interactions. The hydrophobic effect is when nonpolar substances aggregate in aqueous solution, that exclude water molecules.
Elements in Sheep Wool.
Gives many uses for sheep wool and why it is better to use than other products.
History of how wild sheep and domesticated sheep had different wool. Listed the different processes on how to clean sheep wool and how they are done.
Showed and explained the three main parts of the physical structure of sheep wool, it also gave more information on the chemical structure of sheep wool.
Chemical components of lanolin.
Gives a diagram starting from the outside of the fibre going all the way into the center.
About the Author
Maya Guldborg is a junior at Billings Senior High School. She shows sheep in 4H. She runs cross country and swims for Senior. Her interests are going to lake and boating, snowboarding, and riding horse. She has not decided where she want to go to college yet but she wants to become an ER physician.