Electrospinning Induced Orientation of Protein Fibrils

Chen, Da; Narayanan, Narayanan; Federici, Enrico; Yang, Zhi; Zuo, Xiaobing; Gao, Jinling; Fang, Fang; Deng, Meng; Campanella, Osvaldo H.; Jones, Owen G.

doi:10.1021/acs.biomac.0c00500

Cited by 24 publications

(16 citation statements)

References 71 publications

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“…Viscosity originates from molecular entanglement and it commonly positively correlates with molecular weight for the chemical with the same composition (Chen et al., 2020). From Figure 3, the apparent viscosities of OSAS, E10‐OSAS, E20‐OSAS, E30‐OSAS, and E40‐OSAS are 60.23, 16.63, 12.33, 8.13, and 3.65 Pa·s, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Preparation and physiochemical properties of enzymatically modified octenyl succinate starch

Chen

Hu²,

Chen

et al. 2022

Journal of Food Science

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The high viscosity and low solubility of octenyl succinate starch (OSAS) in water often lead to low reaction efficiency and uneven distribution of OSA groups, which can be solved by subjecting OSA starch to enzymatic digestion. Waxy corn starch is used to produce OSAS. The molecular weight of enzymolysis modified octenyl succinate starches (E‐OSAS) decreased with the addition of enzyme, and the substitution of enzymatically digested OSAS was larger than that of OSAS. As the addition of pullulanase increased, the substitution of E‐OSAS tended to increase and the apparent viscosity decreased significantly. The smaller its particle size and polydispersity index (PDI), the larger the absolute value of the zeta potential. E40‐OSAS with the smallest particle size and best homogeneity and stability had the smallest weight average molecular weight (1.38 × 106 g/mol), the smallest number average molecular weight (1.37 × 105 g/mol), and the largest degree of substitution of 0.019. The E‐OSAS has not been investigated deeply enough, and the enzymatic treatment by pullulanase is not much studied, so this study is of great importance to provide some basis for the research of new microcapsules. Practical Application This work aims to provide wall materials with lower viscosity and better encapsulation properties for the food industry. Waxy corns starch is used to manufacture OSAS. This wall material is a partly biodegradable material that is hydrophilic on the outside and hydrophobic on the inside, and its preparation process is in line with the concept of green chemistry.

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Section: Resultsmentioning

confidence: 99%

“…Viscosity originates from molecular entanglement and it commonly positively correlates with molecular weight for the chemical with the same composition (Chen et al, 2020). From Figure 3, the apparent viscosities of…”

Section: Determination Of Apparent Viscositymentioning

confidence: 96%

Preparation and physiochemical properties of enzymatically modified octenyl succinate starch

Chen

Hu²,

Chen

et al. 2022

Journal of Food Science

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“…It was reported that these coiled chains would be elongated and orientated during the electrospinning process. 45,46 Besides, the pulling effect exerted by the highly rotating drum also favored the orientation of the polymer chains. 47,48 The orientation of the PVA chains in nanofibers was proved by polarized FTIR spectroscopy, as the polarized spectra collected with light that is polarized parallel and perpendicular to the nanofiber alignment direction exhibited completely different absorbance intensities (Figure S13).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Nanofibrous Actuator with an Alignment Gradient for Millisecond-Responsive, Multidirectional, Multimodal, and Multidimensional Large Deformation

Qin

Feng

Wang

et al. 2020

ACS Appl. Mater. Interfaces

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Although progress has been made in the construction of stimulus-responsive actuators, the performance of these smart materials is still unsatisfactory, owing to their slow response, small deformation amplitude, uncontrollable bending direction, and unidirectional (2D to 3D) transformation. Herein, we employ a structural bionic strategy to design and fabricate a novel water/ moisture responsive nanofibrous actuator with an alignment degree gradient. Owing to its different contraction gradient amplitudes along the thickness direction and the unique physical property of the nanofibrous material, the prepared actuator exhibits excellent shape deformation performance, including superfast response (less than 150 ms), controllable deformation directions, multiple actuation models, multiple dimensional deformation (0D−3D, 1D−3D, 2D−3D, and 3D−3D), large bending curvature (25.3 cm −1 ), and a repeatability rate of at least 1000. The actuation performance of the nanofibrous actuator is superior to the currently reported actuators. The nanofibers are integrated into layer-by-layer and side-by-side structures to achieve competitive and independent actuation, respectively. The outstanding shape-changing properties of the nanofibrous actuator result in the construction of practical intelligent devices for applications such as amphibious movement, intelligent protection, and cargo transportation. The nanofibrous actuator designed herein exhibits tremendous potential in soft robotics, sensors, and biomedicine.

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“…It was found that PNFs had a net orientation with the long PNF-axis aligned with the fibers axis, and that incorporation of PNFs gave stiffer fibers. 248 In another recent study, a coaxial electrospinning approach was used, in which a sheath of polymer solution, with adequate electrospinning properties, encloses the protein core solution. This results in the formation of hybrid fibers with a stabilizing polymer shell and a core made up of PNFs.…”

Section: Assembly Of Pnfs Into Macroscopic Materialsmentioning

confidence: 99%