21.10 Polymerization Flashcards Preview

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Flashcards in 21.10 Polymerization Deck (19):
1

Define monomer

The individual unit repeated in a chain to form a polymer

2

What is the partial reasoning for polymers being so durable?

Because the molecules are hundreds of thousands of atoms in length and breaking the intermolecular between them is therefore very difficult (because the intermolecular forces are so great)

3

Define difunctional monomer

A monomer that has two functional groups, used in two step-growth polymerization reactions

(Substitution reaction. Two different groups that react together)

4

Define condensation polymer

A polymer formed by elimination of an an atom or small group of atoms (usually water) between pairs of monomers during polymerization

5

Define step growth polymerization

The polymerization reaction between difunctional monomers

6

Define diol

An organic molecule that contains two alcohol groups that functions as a monomer in two step-growth polymerization

7

Define diacid

An organic molecule that contains two carboxylic acid groups that functions as a monomer in step growth polymerization

8

Define Polyester

A step growth polymer in which monomers are connected by ester groups

9

Name two ways you can make polyester

1. Diol monomer + diacid monomer
2. Diester monomer + diol monomer

10

What does PET stand for and what is it?

poly(ethylene terephthalate)
A step growth polymer composed of the monomers dimethyl terephthalate and ethan-1,2-diol

11

Define polyamide

A step growth polymer in which monomers are connected by amide groups

12

How are polyamides usually made?

By reacting diacids and diamines

13

Define addition polymer

A polymer that is formed by simple addition of monomers, without the elimination of atoms

14

What is the simplest addition polymer?

Polyethylene

15

What occurs when ethene monomers react with each other?

Double bonds between carbon atoms are broken and single carbon carbon bonds are formed between monomer units

16

What type of polymerization are catalysts used for?

Addition polymerization

17

Define polyethylene

An addition polymer made from the monomer ethene (ethylene)

18

What does PVC stand for and what is it?

poly(vinyl chloride)
An addition polymer made from the monomer chloroethene

19

Define polymer

A long chain-like molecule composed of repeating units called monomers