Cambridge International
A2 Level
Chapter 27: Polymerisation
CIE A2 Chemistry
, POLYMER
A large molecule which made up of
many smaller repeating units that linked
together to form a long chain;
combination of a large monomer
Sometimes know as macromolecules
Production of polymer known as
polymerization
CIE A2 Chemistry
, Polymerization
Consist of two types:
Addition Polymerization
Involve single monomer with presence of C=C
Involves the opening out of a double bond under
high T and P with the presence of catalyst
through free-radical mechanism with the help of
oxygen as initiator
Eg ethene can be polymerized to form LDPE,
HDPE etc
CIE A2 Chemistry
, Addition Polymerisation
Low density poly(ethene) (LDPE) High density poly(ethene)
Question: How di you think the packing of LDPE and HDPE affects
their Van der Waals forces, and hence their melting/boiling point?
CIE A2 Chemistry
A2 Level
Chapter 27: Polymerisation
CIE A2 Chemistry
, POLYMER
A large molecule which made up of
many smaller repeating units that linked
together to form a long chain;
combination of a large monomer
Sometimes know as macromolecules
Production of polymer known as
polymerization
CIE A2 Chemistry
, Polymerization
Consist of two types:
Addition Polymerization
Involve single monomer with presence of C=C
Involves the opening out of a double bond under
high T and P with the presence of catalyst
through free-radical mechanism with the help of
oxygen as initiator
Eg ethene can be polymerized to form LDPE,
HDPE etc
CIE A2 Chemistry
, Addition Polymerisation
Low density poly(ethene) (LDPE) High density poly(ethene)
Question: How di you think the packing of LDPE and HDPE affects
their Van der Waals forces, and hence their melting/boiling point?
CIE A2 Chemistry
