Polymers from Alkenes Flashcards
1
Q
How do you show Polymers from Alkenes?
A
Monomer = n alkene Polymer = (alkene without double bond) n
2
Q
How do you name polymers?
A
poly(alkene name)
3
Q
What is addition polymerisation?
A
- pi bonds break in lots of small alkene monomers
- monomers join together
- form long polymers chain
4
Q
What are problems with polymers and why?
A
Go to landfill = non-biodegradable
Incinerated = produces toxic gases like CO (dioxins)
PVC Problems = produces acidic HCl gases
5
Q
What are the solutions to polymers?
A
Biodegradable alternatives: made from starch/maize/cellulose/lactic acid
Photodegradable alternatives: C=O degraded by UV light
Recycling: sorted into types, melted and remoulded
Incinerated with gas scrubber: removes poisonous gases
Cracking: creates short chained alkanes - used as fuels
Feedstocks recycling: broken down into H2 and CO - reacted with hydrocarbons - make useful compounds
