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Helical Twisting of Electrospun Liquid Crystalline Cellulose Micro‐ and Nanofibers

“…The twisting is on a supramolecular scale, with the pitch measured in micrometers. The helical morphology is similar to what has been seen in amyloid nanofibrils of aggregated peptides [14] and natural cellulose fibrils extracted from algae; [15] however, the length scales and the physical origin of twisting in these systems is completely different (spontaneous phase chirality of b-sheets in amyloids and preparation history in extracted fibrils). There is also a very interesting and unique report of helical twisting obtained in electrospinning, [16] but the authors achieved it by clever engineering of their electric fields -as opposed to the spontaneous natural twist of the cellulose fibers reported here.…”

Cellulose Elementary Fibrils Assemble into Helical Bundles in S1 Layer of Spruce Tracheid Wall

“…Remarkably, all the bundles showed a right-handed helical twist, which is in line with previous theoretical and experimental studies. [29][30][31][32] Helical structures are ubiquitous in nature, especially in plantae. Scientists have also made many synthetic efforts to mimic this fascinating morphology of the helices because of their unique shape and material properties, e.g.…”

Computer simulation studies of microcrystalline cellulose Iβ

“…Thus, the twist does not depend on the primary alcohol conformation. Cellulose fibers with a right-handed twist have been observed experimentally, 57,58 and the twist of cellulose crystallites can lead to the formation of a chiral nematic phase. 59 The enforcement of P2 1 symmetry confines the cellulose chains to an exact twofold helix, and this constraint can be satisfied by many However, the line connecting twofold helical structures for cellobiose in /, w space does not coincide with a free-energy minimum.…”