how do the different architectures of a polymer affect their properties? Solution Polymers are affected by molecular weight and crystallinity. Linear polymers - single chains, flexible , van der Waals between molecules. Branched polymers - side branches , packing is less efficient, lower density,less crystalline than linear. Branching also affects chain entanglement, the ability of chains to slide past one another, in turn affecting the bulk physical properties. Long chain branches may increase polymer strength, toughness, and the glass transition temperature (T g ) due to an increase in the number of entanglements per chain. From an adsorption point-of-view, the bottle-brush homopolymers have the ability to attach to the surface through both side chain and backbone segments. If adsorption occurs through the attachment of the side chains on the surface, then the polymer attains a flat conformation at the interface since the gain in adsorption energy increases with the number of contact points between the side chain segments and the surface Dendrimers are a special case of branched polymer where every monomer unit is also a branch point. This tends to reduce intermolecular chain entanglement and crystallization. A related architecture, the dendritic polymer, are not perfectly branched but share similar properties to dendrimers due to their high degree of branching. .

1. how do the different architectures of a polymer affect their properties?
Solution
Polymers are affected by molecular weight and crystallinity.
Linear polymers - single chains, flexible , van der Waals between molecules.
Branched polymers - side branches , packing is less efficient, lower density,less crystalline than
linear.
Branching also affects chain entanglement, the ability of chains to slide past one another, in turn
affecting the bulk physical properties. Long chain branches may increase polymer strength,
toughness, and the glass transition temperature (T g ) due to an increase in the number of
entanglements per chain.
From an adsorption point-of-view, the bottle-brush homopolymers have the ability to attach to
the surface through both side chain and backbone segments. If adsorption occurs through the
attachment of the side chains on the surface, then the polymer attains a flat conformation at the
interface since the gain in adsorption energy increases with the number of contact points between
the side chain segments and the surface
Dendrimers are a special case of branched polymer where every monomer unit is also a branch
point. This tends to reduce intermolecular chain entanglement and crystallization. A related
architecture, the dendritic polymer, are not perfectly branched but share similar properties to
dendrimers due to their high degree of branching.