1
|
Behroozi Kohlan T, Atespare AE, Yildiz M, Menceloglu YZ, Unal S, Dizman B. Amphiphilic Polyoxazoline Copolymer-Imidazole Complexes as Tailorable Thermal Latent Curing Agents for One-Component Epoxy Resins. ACS OMEGA 2023; 8:47173-47186. [PMID: 38107921 PMCID: PMC10720278 DOI: 10.1021/acsomega.3c07177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/29/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
One-component epoxy resins (OCERs) are proposed to overcome the energy inefficiency and processing difficulties of conventional two-component epoxy resins by employing latent curing agents, specifically thermal latent curing agents (TLCs). Despite recent progress, the need for TLCs with a simple preparation method for different curing agents, epoxy resins, and process conditions remains. Here, tailorable TLCs were prepared by forming complexes between imidazole (Im) and amphiphilic polyoxazoline copolymers with tunable structures and properties by a solvent evaporation method. The obtained TLCs were manually mixed with DGEBA to prepare OCERs. The miscibility of the complexes with DGEBA was studied, considering the functionalities of copolymers. The curing behaviors of TLCs were compared using dynamic Differential Scanning Calorimetry (DSC) studies considering the side chain and composition of the copolymers, copolymer:Im ratio, and concentration of Im in DGEBA. The curing behavior of the promising OCERs was studied by isothermal DSC studies to investigate their stability at different temperatures and curing rate at elevated temperatures revealing the stability of these OCERs.
Collapse
Affiliation(s)
- Taha Behroozi Kohlan
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Asu Ece Atespare
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Mehmet Yildiz
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Yusuf Ziya Menceloglu
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Serkan Unal
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Bekir Dizman
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| |
Collapse
|