Design for dynamic hydrogen bonding in a double network structure to improve the mechanical properties of sodium alginate fibers

2021 ◽  
Author(s):  
Ming Yan ◽  
Junfeng Shi ◽  
Song Tang ◽  
Guohang Zhou ◽  
Jiexiang Zeng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hydrogen Bonding ◽  
Sodium Alginate ◽  
Network Structure ◽  
Wet Spinning ◽  
Double Network ◽  
Alginate Fibers

The SA/PAA-VSNP fiber was obtained using dynamic wet spinning through dynamic hydrogen bonding in the double network structure.

Strengthening and toughening sodium alginate fibers using a dynamically cross-linked network of inorganic nanoparticles and sodium alginate through the hydrogen bonding strategy

2021 ◽  
Author(s):  
Ming Yan ◽  
Junfeng Shi ◽  
Song Tang ◽  
Lingwei Liu ◽  
Haotong Zhu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Sodium Alginate ◽  
Inorganic Nanoparticles ◽  
Alginate Fibers

Nanoparticles were introduced to strengthen and toughen sodium alginate fibers through a dynamically cross-linked network by hydrogen bonding.

Mechanical properties and dynamics of degradation of polylactide matrix composites with calcium and sodium alginate fibers

2013 ◽  
Vol 48 (7) ◽  
pp. 815-824 ◽  
Author(s):  
Magdalena Bartkowiak-Jowsa ◽  
Anna Kwiatkowska ◽  
Romuald Będziński ◽  
Celina Pezowicz ◽  
Jarosław Filipiak ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sodium Alginate ◽  
Matrix Composites ◽  
Alginate Fibers

The Study of Rheological and Mechanical Properties of the Antarctic Krill Protein/Sodium Alginate Fibers

2013 ◽  
Vol 813 ◽  
pp. 377-381 ◽  
Author(s):  
Jing Guo ◽  
Xue Cai Li ◽  
Yu Yan Zhang ◽  
Li Zhang ◽  
Chun Fang Yu ◽  
...  
Keyword(s):  
Thermal Property ◽  
Sodium Alginate ◽  
Cross Section ◽  
Antarctic Krill ◽  
Polarized Light ◽  
Wet Spinning ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Alginate Fibers ◽  
The Antarctic

protein was extracted from Antarctic krill (AK), then blended with sodium alginate (SA) , prepare the spinning solution, the rheological properties of spinning solution were studied by Brookfield DV-C digital viscosimeter. AKP/SA fibers were prepared via wet spinning with CaCl2 and PEG as coagulator .The morphology, tensile strength and thermal property of AKP/SA fibers were characterized by polarized light microscopy, monofilament strength tester and thermal gravimetric analysis (TGA) instrument. The result shows that the shear viscosities of spinning solution decrease with the increasing of shear rate and decreasing of concentration. the optimal Preparation Process of AKP/SA fibers were 5% concentration of SA, proportion of 1: 9 for AKP solution to SA solution, and proportion of 5:1 for CaCl2 to PEG. The cross-section of AKP/SA fiber is a jagged shape. Thermal property of AKP/SA fibers is similar to SA fibers.

scholarly journals Sodium alginate/cellulose nanocrystal fibers with enhanced mechanical strength prepared by wet spinning

2019 ◽  
Vol 14 ◽  
pp. 155892501984755
Author(s):  
Jie Liu ◽  
Rui Zhang ◽  
Meiyu Ci ◽  
Shuying Sui ◽  
Ping Zhu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Strength ◽  
Sodium Alginate ◽  
Cellulose Nanocrystals ◽  
Cellulose Nanocrystal ◽  
Wet Spinning ◽  
Transmission Electron ◽  
Alginate Fibers ◽  
Scanning Electron

Sodium alginate/cellulose nanocrystal fibers were prepared using a wet spinning method to enhance the mechanical strength of sodium alginate fibers. Cellulose nanocrystals were prepared by sulfuric acid hydrolysis method. The particle diameter size was measured, and the morphology of cellulose nanocrystals was characterized by transmission electron microscopy and scanning electron microscopy. The structure and mechanical properties of sodium alginate/cellulose nanocrystal fibers were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and mechanical strength testing. The incorporation of cellulose nanocrystals significantly improved the strength of alginate fibers because of the uniform distribution of cellulose nanocrystals in the alginate matrix. The tensile strength and elongation at break of the alginate fibers increased from 1.54 to 2.05 cN/dtex and from 8.29% to 15.05% with increasing cellulose nanocrystals content from 0 to 2 wt%, respectively.

Laboratory Testing of Self-Healing Fibers in Asphalt Mixtures Prepared with Recycled Materials

2019 ◽  
Vol 2673 (4) ◽  
pp. 513-523 ◽  
Author(s):  
Max A. Aguirre ◽  
Marwa M. Hassan ◽  
Sharareh Shirzad ◽  
Samuel Cooper ◽  
Louay N. Mohammad ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sodium Alginate ◽  
Asphalt Mixtures ◽  
Hollow Fibers ◽  
Bending Test ◽  
Self Healing ◽  
Test Results ◽  
Strength Recovery ◽  
Recycling Agent ◽  
Alginate Fibers

Self-healing products such as hollow fibers filled with a recycling agent present an emerging technology that would enhance an asphalt mixture’s resistance to cracking damage in the long term. The objective of this study was to evaluate the healing efficiency of sodium-alginate fibers containing a recycling agent using asphalt concrete beam specimens. A self-healing experiment was designed and conducted to monitor strength recovery in the damaged specimens using a 3-point bending test during a 6-day healing period under two different environmental curing conditions. In addition, the effects of adding the hollow fibers on the mechanical properties of asphalt mixtures were evaluated by conducting a series of laboratory tests to evaluate the performance against common distress such as permanent deformation, intermediate cracking, and low-temperature cracking. Results of the self-healing experiment test results showed that the addition of sodium-alginate fibers improved the strength recovery of mixtures prepared with unmodified binder. The increase in temperature from 25°C to 50°C during the healing period also resulted in higher strength recovery percentages in all the evaluated mixtures. Furthermore, semi-circular bending test results showed that the addition of fibers enhanced the mechanical properties against fracture at intermediate temperature of mixtures containing recycled asphalt materials.

Fabrication and Characterization of Alginate Fibers by Wet-Spinning

2013 ◽  
Vol 796 ◽  
pp. 87-91 ◽  
Author(s):  
Guo Kai Xu ◽  
Lin Liu ◽  
Ju Ming Yao
Keyword(s):  
Sodium Alginate ◽  
Coagulation Bath ◽  
Wet Spinning ◽  
Pseudoplastic Fluid ◽  
Elongation At Break ◽  
Alginate Concentration ◽  
Fabrication And Characterization ◽  
Alginate Fibers ◽  
Dope Concentration

Alginate fibers were prepared by extruding a concentrated sodium alginate solution into calcium chloride coagulation bath. The rheological behavior of different concentrations of sodium alginate solutions were investigated to evaluate the spinnability. The effect of dope concentration on the morphologies and mechanical properties of resulting alginate fibers were examined. The results showed that sodium alginate solutions were pseudoplastic fluid and had good spinnability with concentration ranging in 1.5%-3.5%. Moreover, the morphology of obtained fibers became smoother with increasing sodium alginate concentrations. When the sodium alginate concentration was 3.5%, the tensile strength and elongation at break of alginate fibers reach to 13.6±1.2 cN/tex and 8±0.5%, respectively.

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