Frontal polymerization-triggered simultaneous ring-opening metathesis polymerization and cross metathesis affords anisotropic macroporous dicyclopentadiene cellulose nanocrystal foam

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作者
Jinsu Park
Seung-Yeop Kwak
机构
[1] Seoul National University,Department of Materials Science and Engineering
[2] 1 Gwanak-ro,Research Institute of Advanced Materials (RIAM)
[3] Gwanak-gu,Institute of Engineering Research
[4] Seoul National University,undefined
[5] 1 Gwanak-ro,undefined
[6] Gwanak-gu,undefined
[7] Seoul National University,undefined
[8] 1 Gwanak-ro,undefined
[9] Gwanak-gu,undefined
来源
Communications Chemistry | / 5卷
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摘要
Multifunctionality and effectiveness of macroporous solid foams in extreme environments have captivated the attention of both academia and industries. The most recent rapid, energy-efficient strategy to manufacture solid foams with directionality is the frontal polymerization (FP) of dicyclopentadiene (DCPD). However, there still remains the need for a time efficient one-pot approach to induce anisotropic macroporosity in DCPD foams. Here we show a rapid production of cellular solids by frontally polymerizing a mixture of DCPD monomer and allyl-functionalized cellulose nanocrystals (ACs). Our results demonstrate a clear correlation between increasing % allylation and AC wt%, and the formed pore architectures. Especially, we show enhanced front velocity (vf) and reduced reaction initiation time (tinit) by introducing an optimal amount of 2 wt% AC. Conclusively, the small- and wide-angle X-ray scattering (SAXS, WAXS) analyses reveal that the incorporation of 2 wt% AC affects the crystal structure of FP-mediated DCPD/AC foams and enhances their oxidation resistance.
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