Resins and Gums Flashcards
Lecture 15
Plant resins and latex are mainly made of….
Terpenes o terpenoid compounds
Why do plants have resins and latex?
To defend and to heal
Where are resins made?
In resins ducts in the bark
Where is latex made?
Latex canals
What is the most useful latex?
Rubber
Why is Charles Goodyear important?
Developed vulcanizing process for rubber
What does vulcanizing rubber do?
Makes it elastic rather than sticky
What happens on a rubber plantation?
gets latex from the bark, adds sulphur, flatten rubber, cure under heat and high pressure
Why are Michelin tires important?
made the radial tire
What is Gutta-Percha used for?
Furniture, electrical insulator, golf balls, root canal
t/f: gutta percha is a natural thermoplastic
true
What is the principle ingredient in chewing gum?
Chicle but got replaced by synthetic compounds in 1940s
Who was the founder of the chewing gum industry?
Thomas Adams
What is Gum Arabic used for?
Glue, pharmaceutical drugs, lickable adhesives, candy
T/F Lacquer is the same as it was before
no the one today is synthetic