StudentLecture_24 - CHM 11500 T Lecture 24, Polymers...

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Reading, HW, and Learning objectives are available on the web. Exam tonight: 6:30 pm, Hall of Music. Reading Assignments and Learning Objectives for Lectures 15-23 on Blackboard Additional material in Lectures 15-23 Labs in Chapters 6, 7, 8 See the “Exam III Fa09” folder in the “Exams” folder. CHM 11500 T Lecture 24, Polymers 11/19/07
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Polymers Polymer: A substance composed of molecules characterized by the multiple repetition of one or more species of atoms or groups of atoms (consitutional repeating units) linked to each other in amounts sufficient to provide a set of properties that do not vary markedly with the addition or removal of one or a few of the constitutional units. Polyethylene
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Biopolymers While the term polymer in popular usage suggests plastic ", polymers comprise a large class of natural and synthetic materials with a variety of properties and purposes. Natural polymer materials such as shellac have been in use for centuries. Biopolymers such as proteins (for example hair, skin and part of the bone structure) and nucleic acids play crucial roles in biological processes. A variety of other natural polymers exist, such as cellulose which is the main constituent of wood and paper.
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phosphate sugar base phosphate sugar base phosphate sugar base Biopolymers
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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.
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Most books have it that Charles Goodyear (1800–1860) was first to use sulfur to vulcanize rubber. However ancient Mesoamericans achieved the same results
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This note was uploaded on 02/21/2010 for the course CHEM 115 taught by Professor L during the Spring '02 term at Purdue University-West Lafayette.

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StudentLecture_24 - CHM 11500 T Lecture 24, Polymers...

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