Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials

Rashid Nazir; Liting Bi; Stefania F. Musolino; Olivia H. Margoto; Kuthan Çelebi; Christophe Mobuchon; Mahdi Takaffoli; Abbas S. Milani; Greg Falck; Jeremy E. Wulff

doi:10.1021/acsapm.1c01577

journal article·2022-03-11

Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials

Rashid Nazir, Liting Bi, Stefania F. Musolino, Olivia H. Margoto, Kuthan Çelebi, Christophe Mobuchon, Mahdi Takaffoli, Abbas S. Milani, Greg Falck, Jeremy E. Wulff

ACS Applied Polymer Materials· Volume 4· Issue 3

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Source abstract

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).

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Research context

Polymers Composites

OpenAlex topics: Synthesis and properties of polymers · Click Chemistry and Applications · N-Heterocyclic Carbenes in Organic and Inorganic Chemistry

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada

Composites Research Network (CRN), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada

Composites Research Network (CRN), University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada

Materials and Manufacturing Research Institute (MMRI), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada

Aluula Composites, Victoria, British Columbia V8Z 1T3, Canada

Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, British Columbia V8P 5C2, Canada

Funding

Canada Research Chairs · Innovate BC · Mitacs

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