Rosin side chain type catalyst-free vitrimers with high cross-link density, mechanical strength, and thermal stability

Shen, Yunpeng; Tang, Weishan; Li, Jinyang; Ke, Zhijun; Liao, Li; Yang, Peng; Lu, Yuntao; Rao, Xiaoping

doi:10.1007/s11705-022-2291-7

Cited by 5 publications

(1 citation statement)

References 45 publications

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“…Currently, in light of the escalating crisis surrounding natural petroleum resources and environmental pollution, employing readily available, cost-effective, and renewable biomass resources as raw materials to design eco-friendly, biodegradable, and recyclable biobased vitrimer polymers is regarded as one of the effective approaches for addressing environmental issues. , Rosin, being a pivotal biomass resource endowed with highly reactive groups and rigid hydrophenanthrene framework, has been extensively investigated within the realm of biobased polymer materials due to its exceptional mechanical properties and thermal stability. − For example, Yang et al utilized fumaropimaric acid (FPA) derived from rosin as a curing agent and successfully obtained ESO-FPA vitrimer with a tensile strength of up to 16.6 MPa and T g (65 °C) higher than room temperature after being cured with ESO. Xu et al reacted diethylenetriamine with ESO to synthesize aminated ESO (AESO), which was subsequently cured with epoxidized maleopimaric anhydride (EMPA) to prepare a catalyst-free self-healing biobased vitrimer featuring a tertiary amine structure and a double dynamic network with multiple H bonds and dynamic hydroxyl ester bonds.…”

Section: Introductionmentioning

confidence: 99%

Fully Biobased Degradable Vitrimer Foams: Mechanical Robust, Catalyst-Free Self-Healing, and Shape Memory Properties

Tian,

Feng,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Thermosetting foams have limited capabilities for recycling, reprocessing, or reshaping. Moreover, most of the foaming agents currently employed in these foams are derived from organic compounds sourced from petrochemicals, thereby posing a significant environmental threat due to heightened pollution. To solve these problems, a fully biobased degradable vitrimer foam (EPC-X) was fabricated using an environmentally friendly all-in-one foaming strategy by cross-linking epoxidized malepimaric anhydride (EMPA), 1,5diaminopentane (PDA), and 1,5-diaminopentane carbamate (PDAC) as a latent curing-blowing agent. To our delight, the vitrimer foams exhibit excellent mechanical properties (2.86 ± 0.11 MPa compressive strength) owing to their unique rigid rosin backbone and cross-linking networks. The presence of dynamic β-hydroxy ester bonds and the selfcatalytic behavior of tertiary amine groups facilitate network rearrangement without requiring additional catalysts, thereby resulting in the development of EPC-X with rapid self-healing and shape memory properties. The self-healing foam could support a weight of 500 g (approximately 562 times its own mass). Moreover, these high-performance vitrimer foams can also be easily degraded in an ethanolamine (EA) or NaOH solution under mild conditions. Such a design strategy offers an alternative approach for developing superior degradable and thermal stimuli-responsive thermosetting foams.

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