1. Metal-Assisted Injection Spinning of Ultra Strong Fibers from Megamolecular LC Polysaccharides.
- Author
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Ali, Mohammad Asif, Singh, Maninder, Zhang, Shuo, Kaneko, Daisaku, Okajima, Maiko Kaneko, and Kaneko, Tatsuo
- Subjects
SPINTRONICS ,RARE earth ions ,MOLECULAR orientation ,FIBERS ,METAL ions ,ERBIUM - Abstract
The molecular orientation of liquid crystalline (LC) hydrogels has the potential to induce a range of functionalities that can deliver great mechanical strength. Sacran is a supergiant LC polysaccharide isolated from the cyanobacterium Aphanothece sacrum with a high amount of anionic functional groups such as sulfates and carboxylates. In this article, ultra-strong sacran hydrogels and their dried fibers were produced by cross-linking under injection flow with trivalent metal ions such as Al
3+ , Cr3+ , Fe3+ , In3+ , and rare-earth metal ions such Er3+ and Sr3+ . Crossed-polarizing microscopy and X-ray diffraction imaging revealed a uniaxial molecular orientation in the LC gel fiber, resulting in outstanding mechanical characteristics. [ABSTRACT FROM AUTHOR]- Published
- 2024
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