Table 3: Chemical groups and polymer representatives available for covalent attachment of protein.

Active chemical groupPolymer representativeIs a protein covalently attached?

Methylene, –CH2PolyethyleneNo
Double carbon bond, –C=C–PolystyreneNo
Hydroxyl, –OHPolyvinyl alcoholNo
Ether, C–OPolyethylene terephtalateNo
Carbonyl, C=OPolyethylene terephtalateNo
Aldehyde, CH=OPolyacroleinNo
Carboxyl, –COOHPolymethacrylic acidNo
Free radical, R•No known example?
Combination of all these groupsPIII treatment of polyethyleneYes