Enzymatic synthesis of cellulose was performed using cellodextrin phosphorylase (CDP), sucrose phosphorylase (SP), sucrose, and 1-azido-1-deoxy-β-glucoside in 40 mM phosphate buffer (pH 7.0). The synthetic product was cellulose oligomers (DP ≈ 10) with azide groups at the reducing end. Lamella single crystals of cellulose oligomers with surface-reactive azide groups are expected to form by recrystallization of the synthetic products. The lamella single crystals were crystalline form of cellulose II, several hundred nm in width and several μm in length. The average thickness of the lamella single crystals was 5.1 nm, which is almost equivalent to the chain length of cellulose oligomers DP ≈ 10. When suspensions of the lamella single crystals were cast under a horizontal 8 T magnetic field, films were obtained, in which the lamella single crystals were three dimensionally aligned.

Three-dimensional alignment of lamella single crystals of cellulose II using magnetic field

253rd National Meeting (2017)

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