Designing starch derivatives with desired structures and functional properties via rearrangements of glycosidic linkages by starch-active transglycosylases

Li, Xiaoxiao; Wang, Yu; Wu, Jang‐Yen; Jin, Zhengyu; Dijkhuizen, Lubbert; Svensson, Birte; Bai, Yuxiang

doi:10.1080/10408398.2023.2198604

Cited by 1 publication

(1 citation statement)

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“…To address these challenges and meet the growing demand for environmentally friendly alternatives to DGEBA, many studies are actively undertaking efforts to use biomaterials . Incorporating biomaterials such as lignin, − sugar, starch, and vanillin , into thermosetting epoxy resin matrices exhibits promising potential in enhancing the performance of coatings and adhesives while minimizing negative environmental impacts . Moreover, the recycling issue of thermosetting epoxy is emerging as one of the key challenges in ensuring sustainability and environmental protection of modern industries.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Curcumin-Based Bioepoxy Resin with On-Demand Chemical Cleavability

Jeong,

Ju,

Hong

et al. 2024

ACS Omega

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We synthesized a novel curcumin-based bioepoxy resin by introducing epichlorohydrin (ECH) into the hydroxyl groups of curcumin and analyzed it using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The epoxy equivalent weight (EEW) was determined based on a reaction with sodium hydroxide (NaOH) through titration, and the actual curing process was conducted after exploring the optimal conditions using an amine-based curing agent through dynamic scanning in differential scanning calorimetry (DSC) and isotherm analysis. The cured epoxy resin had a tensile strength, Young's modulus, and glass transition temperature (T g ) of 33 MPa, 1.4 GPa, and 86 °C, respectively. Interestingly, the diunsaturated ketone contained in the epoxy resin showed on-demand chemical cleavability, in that it had been decomposed into an aldehyde and ketone only after having been converted to a hydroxyl ketone through an oxidation reaction. The results of this study can significantly contribute to improving the eco-friendliness and recyclability of epoxy resins used in fields requiring long-term stability and chemical resistance.

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