Biomaterials - Common polymer bioamterials: Repeating units

7 important questions on Biomaterials - Common polymer bioamterials: Repeating units

What is the difference between PE and PP?

PP has a CH3 group, which can be changed to an H group to create PE.

Why is PVC not often used?

PVC contains chloride, which is not desirable in many applications.

What is PTFE and what are its properties?

PTFE is a polymer with fluor groups instead of hydrogen groups, making it very hydrophobic. However, it is not completely inert and can cause foreign body and toxic responses.
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How is PDMS different from other polymers?

PDMS has a silicon and oxygen backbone instead of a carbon backbone.

What are the properties of PMMA?

PMMA has a more complex structure than PP, with both a methyl group and an ester group. It is very hydrolysable but not very hydrophilic, and degrades slowly.

What is PHEMA, and what are its properties?

PHEMA has an OH group at the end, making it more hydrophilic than PMMA. It is fast hydrolyzed and can take up water.

How is PET different from other polymers?

PET contains ester groups and an aromatic ring, making it less prone to hydrolysis.

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