Sphere, honeycomb, regularly spaced droplet and fiber structures of polyion complexes of chitosan and gellan

Amaike, Masato; Senoo, Yukiko; Yamamoto, Hiroyuki

doi:10.1002/(sici)1521-3927(19980601)19:6<287::aid-marc287>3.0.co;2-x

Cited by 96 publications

(31 citation statements)

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“…This leads us to suggest, in accordance with most previous works, that at the interface of the two components forms a load-bearing strong skin that prevents diffusion of the polycation deep into the filament, resulting in a core-shell strucutre. 42,48,[57][58][59][60] The majority solid component was interpreted to be TOCN based on the color of the wet filament (see Figure 1c) when using dyed TOCN dispersion (blue) and polycation solution (pink, PDADMAC).…”

Section: Resultsmentioning

confidence: 99%

Interfacial Polyelectrolyte Complex Spinning of Cellulose Nanofibrils for Advanced Bicomponent Fibers

et al. 2017

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ABSTRACT. Fiber spinning of anionic TEMPO-oxidized cellulose (TOCN) nanofibrils with polycations by interfacial polyelectrolyte complexation is demonstrated. The formed fibers were mostly composed of cellulose nanofibrils and the polycations were a minor constituent, leading to yield and ultimate strengths of ca. 100 MPa and ca. 200 MPa, and Young's modulus of ca. 15 GPa.Stretching of the as-formed wet filaments of TOCN/polycation by 20 % increased the Young's modulus, yield strength, and ultimate tensile strength by approximately 45, 36 and 26 %, respectively. Importantly, feasibility of compartmentalized wound bicomponent fibers by simultaneous spinning of two fibers of different compositions and entwining them together was shown. This possibility was further exploited to demonstrate reversible shape change of a bicomponent fiber directly by humidity change, and indirectly by temperature changes based on thermally dependent humidity absorption.The demonstrated route for TOCN-based fiber preparation is expected to open up new avenues in the application of nanocelluloses in advanced fibrous materials, crimping, and responsive smart textiles.

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Section: Resultsmentioning

confidence: 99%

Interfacial Polyelectrolyte Complex Spinning of Cellulose Nanofibrils for Advanced Bicomponent Fibers

et al. 2017

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“…Up to date, a limited number of CH-GG polyelectrolyte complexes have been reported as the focus has been on the development of capsules and fibers [161][162][163][164][165][166][167] . For example, Yamamoto and co-workers studied the characteristic structures of the interface between CH-GG due to charge overcompensation on the formation of fibers and capsule 162 .…”

Section: Types Of Wound Dressings Available On the Marketmentioning

confidence: 99%

“…This interface reaction could form a hemisphere, honeycomb shape or spaced droplets of polyelectrolyte complex. While the interface can be pulled out to form fibres, as reported by Amaike and co-workers 167 . Another study by Fujii et al 166 reported the encapsulation of alkaline phosphatase (ALP) by utilizing the polyelectrolyte complex technique of CH-GG as shown in Figure 1.5.…”

Section: Types Of Wound Dressings Available On the Marketmentioning

confidence: 99%

Polyelectrolyte complex materials from chitosan and gellan gum

Amin

Panhuis

2011

Carbohydrate Polymers

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“…Oliveria et al demonstrated the formation of GG fibers through spinning alkaline GG solutions into a bath containing ascorbic acid (vitamin C) 126 . Several authors have also reported the formation of poly-ion complex fibers, whereby the polyanionic GG is spun alongside poly-cationic materials 139 . For example, Granero et al reports that GG fibers spun into a bath containing chitosan (and vice versa) generating complex fibers with enhanced mechanical properties 140 .…”

Section: Wet-spinningmentioning

confidence: 99%

Tissue engineering with gellan gum

et al. 2016

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Engineering complex tissues for research and clinical applications relies on high-performance biomaterials that are amenable to biofabrication, maintain mechanical integrity, support specific cell behaviours, and, ultimately, biodegrade. In most cases, complex tissues will need to be fabricated from not one, but many biomaterials, which collectively fulfill these demanding requirements. Gellan gum is an anionic polysaccharide with potential to fill several key roles in engineered tissues, particularly after modification and blending. This review focuses on the present state of research into gellan gum, from its origins, purification and modification, through processing and biofabrication options, to its performance as a cell scaffold for both soft tissue and load bearing applications. Overall, we find gellan gum to be a highly versatile backbone material for tissue engineering research, upon which a broad array of form and functionality can be built. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsStevens, L. R., Gilmore, K. J., Wallace, G. Engineering complex tissues for research and clinical applications relies on high-performance biomaterials that are amenable to biofabrication, maintain mechanical integrity, support specific cell behaviours, and, ultimately, biodegrade. In most cases, complex tissues will need to be fabricated from not one, but many biomaterials, which collectively fulfill these demanding requirements. Gellan gum is an anionic polysaccharide with potential to fill several key roles in engineered tissues, particularly after modification and blending. This review focuses on the present state of research into gellan gum, from its origins, purification and modification, through processing and biofabrication options, to its performance as a cell scaffold for both soft tissue and load bearing applications. Overall, we find gellan gum to be a highly versatile backbone material for tissue engineering research, upon which a broad array of form and functionality can be built.

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Sphere, honeycomb, regularly spaced droplet and fiber structures of polyion complexes of chitosan and gellan

Cited by 96 publications

References 0 publications

Interfacial Polyelectrolyte Complex Spinning of Cellulose Nanofibrils for Advanced Bicomponent Fibers

Interfacial Polyelectrolyte Complex Spinning of Cellulose Nanofibrils for Advanced Bicomponent Fibers

Polyelectrolyte complex materials from chitosan and gellan gum

Tissue engineering with gellan gum

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