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The relationship between molecular weight and various properties of polymers. It explains how different molecular weight distributions affect polymer behavior, including melt viscosity, toughness, and strength. The document also discusses the role of intermolecular interactions in determining polymer properties, illustrating the concept with examples of different polymers like nylon-6, poly(vinylidene fluoride), and poly(acrylonitrile).
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As^ the^ molecular^
weight^ of Polyethylene^ increases
the melting^ point^ approaches
the theoretical^ asymptotic
value^ of 145 C
Introduction^
Molecular Weight 1
=^ low^ distribution
of
=^ high^ distribution^ of
=^ high^ distribution^ of Polymers^ polymer molecular weight with a additionalhigh molecular weight component
Molecular Weight
Mn<Mw<Mz Polymers^
Molecular Weight
of^ the^ polymer
SolubilityChemicalresistance MeltToughnessviscosity Strength
Introduction^
Molecular Weight
Introduction^
Interactions between polymer chains
Introduction^
Interactions between polymer chains - - + + Nylon-^
-^ - +^ Poly(vinylidene fluoride) Poly(acrylonitrile)