Student%20notes%20lec%2021%20F080(2)

Student%20notes%20lec%2021%20F080(2) - Chem 11500 Lecture...

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1 Chem 11500 Lecture 21 Reading: Section 11.5, pp. 512-520
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2 Polymer Characterized by _______________________________ _______________________________. Properties will not vary if one or two of the repeating units are added or removed. Polyethylene
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3 Biopolymers What are the biopolymers we have discussed so far in the course?
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4 Cellulose, another biopolymer Monomer
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5 Structure of Proteins Repeat unit
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6 Genetic Material: DNA phosphate sugar base phosphate sugar base phosphate sugar base
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7 Natural rubber, a polymer Natural rubber occurs in the liquid known as latex, which comes from a rubber tree. Soft and sticky Slowly oxidized by air Stabilized by vulcanization. Most books have it that Charles Goodyear (1800–1860) was first to use sulfur to vulcanize rubber. However ancient Mesoamericans achieved the same results in 1600 BC.
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8 Vulcanization Although Goodyear first used sulfur to vulcanize rubber, neither he nor his family were involved in the Goodyear Tire Co. He sold the patent. natural rubber
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9 ABS rubber, a more advanced tire compound, better wet traction, polar C-N bonds improve internal adhesion.
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10
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This note was uploaded on 01/20/2009 for the course CHM 115 taught by Professor Towns during the Fall '08 term at Purdue University.

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Student%20notes%20lec%2021%20F080(2) - Chem 11500 Lecture...

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