Resins and Gums Flashcards

Lecture 15

1
Q

Plant resins and latex are mainly made of….

A

Terpenes o terpenoid compounds

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2
Q

Why do plants have resins and latex?

A

To defend and to heal

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3
Q

Where are resins made?

A

In resins ducts in the bark

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4
Q

Where is latex made?

A

Latex canals

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5
Q

What is the most useful latex?

A

Rubber

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6
Q

Why is Charles Goodyear important?

A

Developed vulcanizing process for rubber

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7
Q

What does vulcanizing rubber do?

A

Makes it elastic rather than sticky

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8
Q

What happens on a rubber plantation?

A

gets latex from the bark, adds sulphur, flatten rubber, cure under heat and high pressure

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9
Q

Why are Michelin tires important?

A

made the radial tire

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10
Q

What is Gutta-Percha used for?

A

Furniture, electrical insulator, golf balls, root canal

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11
Q

t/f: gutta percha is a natural thermoplastic

A

true

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12
Q

What is the principle ingredient in chewing gum?

A

Chicle but got replaced by synthetic compounds in 1940s

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13
Q

Who was the founder of the chewing gum industry?

A

Thomas Adams

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14
Q

What is Gum Arabic used for?

A

Glue, pharmaceutical drugs, lickable adhesives, candy

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15
Q

T/F Lacquer is the same as it was before

A

no the one today is synthetic

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16
Q

what are some types of resins?

A

Rosin, Amber, Lacquer

17
Q

T/F maple is a resin and latex

A

False its a sap