Fabrication of Helical Nanofibers via Co-Electrospinning

Wu, Huihui; Zheng, Yuansheng; Zeng, Yongchun

doi:10.1021/ie504305s

Cited by 39 publications

(30 citation statements)

References 21 publications

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“…It is shown that the helical microfiber has a three‐dimensional spiral shape, which resembles the helical coiling of the plant tendril (calabash tendril) presented in Figure (c). It is worth nothing that these helical structures are different from the curved structures with much larger coiling diameters of the buckling fibers, which are believed to result primarily from the impinging of the fibers on the collector …”

Section: Resultsmentioning

confidence: 99%

Fabrication of helical microfibers from melt blown polymer blends

Huang

Meng

et al. 2018

J Polym Sci B Polym Phys

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Helical fibers in micro/nanoscale resembling plant tendrils have been of increasing interest due to their unique characteristics. Fabrication of helical microfibers from polymer blends using melt blowing technique is reported in this study. An elastomeric and a stiff polymer are chosen as the raw materials, and a designed swirl-die melt-blowing device is used to prepare the microfibrous nonwovens. Focusing on the interfacial interaction between the polymer components induced by the polymer structure and intrinsic properties, airflow field characteristics, and processing parameters, we explore the effects of various parameters on helical fiber formation.Differential scanning calorimeter is employed to examine the rigidity of polymer chains, and the three-dimensional airflow field simulation is carried out to reveal the airflow field characteristics. This work can provide a promising technique for producing stretchable microfibrous materials which have potential applications in field such as filtration materials and oil sorbents.

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Section: Resultsmentioning

confidence: 99%

Fabrication of helical microfibers from melt blown polymer blends

Huang

Meng

et al. 2018

J Polym Sci B Polym Phys

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“…on the study of cucumber tendril helices. The calculation of k has been introduced in our previous study . The larger the helical curvature is, the tighter the helical structure is.…”

Section: Resultsmentioning

confidence: 99%

Design of a novel co‐electrospinning system with flat spinneret for producing helical nanofibers

Zhao

Zheng

Zeng

2019

J Polym Sci B Polym Phys

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A kind of biomimetic fibers of helical structures at nanoscale has attracted increasing interest. In this study, a novel co-electrospinning setup with a designed flat spinneret, used for the fabrication of helical nanofibers, is reported in this study. Poly (m-phenylene isophthalamide) (Nomex) and Thermoplastic polyurethane (TPU) are chosen as the two components in coelectrospinning. To display the efficiency for producing helical fibers, a generally used core-shell needle spinneret is used for comparison. The effect of the uniformity of electric field distribution created by these two types of spinnerets on the jet motion and the resultant helical fibers is developed, with systematical simulation and experimental research. The results showed that the co-electrospinning system with the newly designed flat spinneret can produce helical nanofibers efficiently. Compared with the needle spinneret, the flat spinneret created more uniform electric field, leading to better morphology and structure of the resultant helical fibers. In addition, an approach to achieve the scale-up of this coelectrospinning system is developed. This novel design is expected to provide a promising method to fabricate nanofiber materials with helical structures.

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“…It is straightforward to extrude different polymer solutions together into one single jet to produce a heterogenous fiber, and the adjustable experiment setup of electrospinning makes it convenient to accomplish this. By using a multichannel springe where each polymer solution can flow separately in the spring and merge together at the outlet ( Figure 16 a), it is possible to acquire fibers with various internal structures such as core-shell [ 123 ], off-centered [ 124 ] and side-by-side [ 125 , 126 ] ( Figure 16 b). The constitution usually includes a soft elastomer and a rigid elastomer.…”

Section: Helical Structures Mimicking Tendril’s Coilingmentioning

confidence: 99%

“…The blue and red represent different polymers. ( a ) is from [ 124 ], reprinted with permission, copyright (2015) American Chemical Society.…”

Section: Figurementioning

confidence: 99%

Helical Structures Mimicking Chiral Seedpod Opening and Tendril Coiling

Wan

Jin

Trase

et al. 2018

Sensors

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Helical structures are ubiquitous in natural and engineered systems across multiple length scales. Examples include DNA molecules, plants’ tendrils, sea snails’ shells, and spiral nanoribbons. Although this symmetry-breaking shape has shown excellent performance in elastic springs or propulsion generation in a low-Reynolds-number environment, a general principle to produce a helical structure with programmable geometry regardless of length scales is still in demand. In recent years, inspired by the chiral opening of Bauhinia variegata’s seedpod and the coiling of plant’s tendril, researchers have made significant breakthroughs in synthesizing state-of-the-art 3D helical structures through creating intrinsic curvatures in 2D rod-like or ribbon-like precursors. The intrinsic curvature results from the differential response to a variety of external stimuli of functional materials, such as hydrogels, liquid crystal elastomers, and shape memory polymers. In this review, we give a brief overview of the shape transformation mechanisms of these two plant’s structures and then review recent progress in the fabrication of biomimetic helical structures that are categorized by the stimuli-responsive materials involved. By providing this survey on important recent advances along with our perspectives, we hope to solicit new inspirations and insights on the development and fabrication of helical structures, as well as the future development of interdisciplinary research at the interface of physics, engineering, and biology.

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Fabrication of Helical Nanofibers via Co-Electrospinning

Cited by 39 publications

References 21 publications

Fabrication of helical microfibers from melt blown polymer blends

Fabrication of helical microfibers from melt blown polymer blends

Design of a novel co‐electrospinning system with flat spinneret for producing helical nanofibers

Helical Structures Mimicking Chiral Seedpod Opening and Tendril Coiling

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