addition polymers Flashcards
(28 cards)
1
Q
Addition Polymers
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2
Q
Polymers (plastics) are long-chain molecules formed by many monomers (smaller molecules) bonded together
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3
Q
Addition polymes are made when many alkenes join together (the C-C bond opens up and each C atom uses this
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4
Q
freed-up bond to male a new bond to the next molecule
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forming one long chain)
5
Q
Polymers are named after their monomer:
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6
Q
Other Polymer Terms:
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7
Q
→ Ethene → Polyethene
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8
Q
Thermosoftening: metts when heated
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9
Q
→ Propene → Polypropene
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10
Q
Thermosetting: do not melt when heated
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11
Q
→ Styrene → Polystyrene
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12
Q
Shape- memory. retum to their onginal shape when warmed
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13
Q
→ Vinylchlonde → PolyvinyIchlonde (PVC)
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14
Q
Bio-degradeable: can be broken down by micro-organisms.
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15
Q
How to draw/wite the formula for polymers:
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16
Q
Example 1:
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17
Q
Ethene → Polyethene
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18
Q
H
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19
Q
C = C
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20
Q
→
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21
Q
H7
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22
Q
LS - St
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23
Q
HJ
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24
Q
n
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25
Example 2:
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Chloroethene → Polychloroethene n
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The n means
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"lots' often in the
thousands
,Н
C= C
H'
'H
→
ES 37.
Example 3:
Propone »Pedigropene n M-C-C=C-H →
gog the may
So to draw a polymer, draw the monomer, but...
1) Make the C=C a C-C
2) Trailing bonds from the carbon atoms outwards.
3) Add large brackets
4) Add the n.
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