Process by which at least one feature of the chemical constitution of a polymer is changed by chemical reaction(s).
Note:
A configurational change (e.g., cis–@C01092@@I03295@) is not usually referred to as a chemical modification.
Source:
PAC, 2004, 76, 889. 'Definitions of terms relating to reactions of polymers and to functional polymeric materials (IUPAC Recommendations 2003)' on page 891 (https://doi.org/10.1351/pac200476040889)