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Module 8 Portage 219 Organic Chemistry Exam 2024 Questions With Completed & Verified Solutions.
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Module 8 Portage 219 Organic Chemistry Exam 2024 Questions With Completed & Verified Solutions.
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Module 8 Portage 219 Organic ChemistryPolymer - ANS large molecule made by repetitive linking of smaller units (monomers)
Macromolecule - ANS very large molecule composed of thousands of covalently bonded atoms
(ex: polymer)
1. natural (in nature)
2. synthetic (in lab) - ANS two ways polymers are made
rubber, carbs: starch & cellulose, proteins, nucleic acids DNA, RNA - ANS natural polymers
nylon, teflon, styrofoam, polyethylene, Dacron, - ANS synthetic polymers
1. method of formation
2. final composition
3. stereochemical orientation - ANS 3 main ways to differentiate polymers
1. chain-growth
2. step-growth - ANS Two classifications of Synthetic polymers
addition polymers - ANS chain growth polymers are also know as:
made by addition of one monomer unit to another in a repetitive pattern - ANS How are chain
growth polymers made?
chain growth polymerization - ANS A polymerization involving sequential addition to monomers
that are unsaturated (C=C) or have some other reactive functional groups (particularly ethylene
and derivatives)
1. intervention
2. consumption of all available monomers - ANS what 2 things stops chain growth
polymerization?
Teflon - ANS chain-growth
polymer: polytetrafluoroethylene
monomer: F2C=CF2
nonstick coating, goretex, electrical insulator, chem-resistant coating
Saran - ANS chain-growth
polymer: polyvinylidenedichloride
monomer: H2C=CCl2
, cling-wrap
Polypropylene - ANS chain-growth
polymer: polypropylene
monomer: H2C=CHCH3
carpet fibers, car parts, toys, packaging, houseware
Orlon, Acrilan, Creslan - ANS chain-growth
polymer: polyacrylonitrile
monomer: H2C=CH(CN)
textiles/fibers, carpets, upholstery
Polyvinyl Acetate - ANS chain-growth
polymer: polyvinyl acetate
monomer: H2C=CH(OCOCH3)
elmers glue, silly putty, latex paints
Polyvinyl alcohol - ANS chain-growth
polymer: polyvinyl alcohol
monomer: H2C=CH(OH)
eye med- artificial tears
Plexiglass (Lucite) - ANS chain-growth
polymer: polymethylmethacrylate
monomer: H2C=C9CH3)COOCH3
clear plastic sheets , blocks, and tubing
the final polymer retains all of the atoms of the monomer - ANS The defining characteristic of
chain-growth polymers
step growth polymerization - ANS formed by the reaction between 2 different functional groups
on different monomer molecules with the accompanying loss of some small molecule (typically
water)
The final polymer chain does NOT include all the atoms initially present in the monomer
molecules - ANS The defining characteristic of step-growth polymers
condensation polymers - ANS step-growth polymers also known as:
typically di or polyfunctional - ANS functionality of step-growth monomers
alternating order in the final polymer chain - ANS appearance of monomers in step-growth
polymerization
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