Polymers - PL

Question 1

Addition polymers definition

Answer 1

• monomers join with no loss of atoms
• monomers are usually alkenes

Question 2

Monomer looks like

Answer 2

https://homework.study.com/cimages/multimages/16/ethene3720931788995459252.jpg

Question 3

Repeat unit of monomer

Answer 3

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT-HSf1s4I9C5GanvDN9-Bn1hM_KAM8uTVnZg&s

Question 4

Section of polymer

Answer 4

https://www.gcsescience.com/polymerisation.gif (groups above and below carbon and switch as single bonds can rotate)

Question 5

Poly(propene) repeat unit

Answer 5

https://www.tutormyself.com/wp-content/uploads/polypropene-polymer-248x300.png

Question 6

What affects the properties of addition polymers

Answer 6

the forces in between the individual chain:
* type of intermolecular forces
* strength of IMF = length, closely packed, branches?
* covalent crosslinks

Question 7

Condensation polymer defintion

Answer 7

monomers joint with loss of a small molecule

Question 8

What are the 2 different types of condensation polymers

Answer 8

polyester and polyamides

Question 9

What are polyesters made from

Answer 9

many ester groups

Question 10

If the monomers joining is ABABAB what is the polyester made from

Answer 10

diol and dicarboxylic acid
https://www.tutormyself.com/wp-content/uploads/img_5a13e1fb6d42e.png

Question 11

If the monomers joining is AAAAA what is the polyester made from

Answer 11

https://cdn.shopify.com/s/files/1/0093/2298/7617/files/Screen_Shot_2022-07-03_at_10.44.50_am.png?v=1656809098

Question 12

What are polyamides made from

Answer 12

many amide groups

Question 13

If the monomers joining is ABABAB what is the polyamides made from

Answer 13

diamine and diacyl chloride
https://www.docbrown.info/page06/organonitrogen/orgnitrogen06c.gif

Question 14

If the monomers joining is AAAAA what is the polyamides made from

Answer 14

amine one one side and acyl chloride either side of r group

Question 15

Melting point of polyesters and why

Answer 15

relatively low as only IDIDs and PDPDs between chains

Question 16

Melting point of polyamides and why

Answer 16

relatively high as IDIDs and H-bonding between chains

Question 17

What increases the melting point of polymers

Answer 17

the intermolecular forces are stronger the closer the functional groups are together
IMF are also stronger the closer the polymer chains are together (branches)

Question 18

Diagram of IMF within polymer chains

Answer 18

https://image-v2.cdn.app.senecalearning.com/courseImages/chemistry/2.3.1-%20Chemical%20properties/2.2.5.1%20-%20polymer%20chains-intermolecular%20forces%20(2)-min,h_400,q_80,w_640.jpg

Question 19

How to draw repeat units of polymers

Answer 19

the brackets chop of what us lost in reaction e.g. water
polyester = https://www.chemistrystudent.com/images/A2Organic/polymers/organicchemistrycondensationpolymers10.png
polyamide = https://www.chemistrystudent.com/images/A2Organic/polymers/organicchemistrycondensationpolymers6.png