Polyamine–diazirine conjugates for use as primers In UHMWPE–epoxy composite materials
Date
2022
Authors
Nazir, Rashid
Bi, Liting
Musolino, Stefania F.
Margoto, Olivia H.
Çelebi, Kuthan
Mobuchon, Christophe
Takaffoli, Mahdi
Milani, Abbas S.
Falck, Greg
Wulff, Jeremy E.
Journal Title
Journal ISSN
Volume Title
Publisher
ACS Applied Polymer Materials
Abstract
Ultra-high molecular weight polyethylene (UHMWPE) fibers show promise for use in fiber reinforced polymer composites, but have poor interfacial adhesion to the epoxy resin that would serve as the polymer matrix. Here we describe the development of a diazirine-grafted polyamine that can be used as a topically applied primer for UHMWPE fibers. Activation of the diazirine groups on the primer initiates C–H bond insertion on the polyethylene fiber, leading to strong covalent bonds between the fiber and the polyamine coating. The covalently functionalized surface can then engage in nucleophilic addition reactions with epoxy resin—resulting in increased bonding to the epoxy matrix (demonstrated through lap-shear experiments) and increased performance for fiber reinforced composite materials (demonstrated through lamination rates and short-beam stress measurements).
Description
Keywords
polymer composites, UHMWPE, diazirines, crosslinking, primers, Centre for Advanced Materials and Related Technology (CAMTEC)
Citation
R. Nazir, L. Bi, S. F. Musolino, O. H. Margoto, K. Çelebi, C. Mobuchon, M. Takaffoli, A. S. Milani, G. Falck, and J. E. Wulff (2022) Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials. ACS Applied Polymer Materials, 4, 1728–1742. https://pubs.acs.org/doi/full/10.1021/acsapm.1c01577