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N ‐Oligo(3‐hydroxybutyrate)‐functionalized polypyrroles: towards bio‐erodible conducting copolymers
Author(s) -
Domagala Anna,
Domagala Wojciech,
Ledwon Przemyslaw,
Musiol Marta,
Janeczek Henryk,
Stolarczyk Agnieszka,
Kurcok Piotr,
Adamus Grazyna,
Lapkowski Mieczyslaw
Publication year - 2016
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5190
Subject(s) - copolymer , grafting , polypyrrole , polymer chemistry , polymerization , pyrrole , materials science , polyester , chemical structure , hydrolysis , carboxylate , chemistry , organic chemistry , polymer
New copolymer materials have been prepared by chemical grafting of oligomeric 3‐hydroxybutyric acid ( OHB ) onto polypyrrole ( PPy ) derivatives. The influence of grafting density and molecular weight of OHB brushes on the physicochemical properties of prepared copolymers was investigated. PPy substrates were prepared by FeCl 3 ‐driven oxidative homopolymerization of N ‐(2‐carboxyethyl)pyrrole or its copolymerization with pyrrole. The grafting method employed involved controlled anionic polymerization of β ‐butyrolactone on pyrrole‐tethered potassium carboxylate active sites. Obtained PPy ‐ g ‐ OHB copolymers of varying grafting density and pendant polyester chain length were characterized and the observed structure–property relationships discussed. The impact of real time exposure to phosphate‐buffered saline environment was investigated and the residue products were characterized. Cross‐correlation of spectroscopic, thermal, electrical and elemental analysis data afforded comprehensive evaluation of the structure of prepared materials and their behaviour in hydrolytic medium. Erosion and degradation pathways have been identified, indicating ways to consciously tailor the physicochemical properties of these new biomimetic materials. © 2016 Society of Chemical Industry