Self-healing polymeric gel via RAFT polymerization and Diels–Alder click chemistry. (9th July 2015)

• Record Type: Journal Article
• Authors: Pramanik, Nabendu B.; Nando, Golok B.; Singha, Nikhil K.
• Is Part Of: Polymer. Volume 69(2015)
• Page Start: 349
• Page End: 356
• Publication Date: 2015-07-09
• Subjects: RAFT polymerization -- DA reaction -- Self-healing; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2015.01.023
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Tailor-made copolymers of furfuryl methacrylate (FMA) and butyl methacrylate (BMA) (PFMA-co-PBMA) were successfully synthesized by reversible addition fragmentation chain-transfer (RAFT) polymerization technique. The thermoreversible network was successfully achieved by Diels–Alder (DA) and retro-DA reaction between the furfuryl groups of PFMA part and a bifunctional maleimide cross-linker, bismaleimide. This process was studied by NMR spectroscopy, FT-IR spectroscopy, differential scanning calorimetry (DSC) and nano-indentation analysis. DSC analysis was used to determine of the endothermic retro-DA reaction in copolymer-DA adduct. In this investigation self-healing property of the above cross-linked material was demonstrated by monitoring the repair of a scratch in the copolymer film upon heating and cooling. This was analyzed by scanning electron microscopy (SEM). Graphical abstract: Highlights: Copolymers of FMA and BMA were prepared via RAFT polymerization. DA reaction was used to prepare cross-linked polymeric gel. The polymeric gel showed endotherm and exotherm peak in DSC analysis. Nano-indentation analysis was used to study the cross-linking behavior. Cross-linked gel showed self-healing characteristics, studied by SEM analysis.