Polymers

Exam 3 Prep

Polymer

A large molecule composed of many repeated subunits

Condensation And Addition

General methods of polymer production

Monomers And Covalent Bonds

Polymers are synthesized from ______, linked by ______________

Length And Branching And Co-polymers

Polymers can vary in ______, connectivity (_______), and even mixtures of different monomers (_________)

Alkenes And Addition Polymerization

______ can be monomers for ___________________

Division Between Monomers

What do the parentheses represent?

Two

How many single electrons are there due to the division of monomers?

The Degree Of Polymerization (DP)

Defined as the number of repeating units in a polymer chain.

Molecular Weight of the Repeating Unit

In polymers synthesized through addition polyermization, the molecular weight of the monomer is equal to the:

Whole Number

The DP of a polymer is typically rounded to the nearest:

6723

Calculate the answer to nearest whole number.

Condensation Polymerization

Produces a covalent bond between monomers plus a small molecule (often H2O)

Alkenes

While condensation polymerization can perform with many kinds of monomers, Addition Polymerization only works for:

Crosslinking

Chemistry that introduces covalent bonds between polymer chains

Higher Density

Molecules with linear chains pack more tightly, thus having a __________________ than molecules with kins or branches.

Stronger Induced Dipolar (ID-ID) Forces in a Condensed State

In terms of molecular size, larger/ long molecules have more surface area than short, thus producing:

Activation And Propagation

What are the two stages of addition polymerization?

Activation

the initial step where the monomer is made reactive enough to undergo polymerization, typically through the creation of a free radical or another reactive species

Propagation

the subsequent step where this reactive species repeatedly adds to other monomer units, extending the polymer chain

All

____ Atoms from alkene are incorporated into the addition polymer

carbon–carbon double bonds

Monomers for addition polymers are usually unsaturated compounds containing _______________.