On the cross-section of shaped fibers in the dry spinning process: Physical explanation by the geometric potential theory

Yang, Zhanping; Ding, Feng; Yu, Tao; Mu, Song; Shi, Haoxuan; Yao, Xin; Xu, Lingyi; He, Ji‐Huan; Cao, Jianhua; Zhang, Li

doi:10.1016/j.rinp.2019.102347

Cited by 41 publications

(23 citation statements)

References 22 publications

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“…It means that the debit and cross section shape of molten polymer come out from nozzle will vary depend on the nozzle geometry. In addition to increase an interlocking force between layers, surface area of molten polymer should be expanded by modifying the shape of cross section but maintaining the unit volume of each layer [20].…”

Section: Introductionmentioning

confidence: 99%

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

et al. 2020

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Nozzle hole diameter of 3D printer (3DP) can be varied to obtain required product quality as well as to reduce manufacturing times. The use of larger diameter may accelerate manufacturing times of products, yet the product quality, including the mechanical properties, still needs to be investigated profoundly. The purpose of this work is to investigate experimentally the effect of nozzle hole diameter of 3DP to the surface quality, accuracy, and the strength of the product. The specimens were manufactured by fused deposition modelling (FDM) 3D printing using polylactic acid (PLA) as the filaments.Bed temperature, extruder temperature and printing speed were set to be 60∘C, 200∘C and 80 mm/s respectively. The thickness of each layer was set at the ratio of 20% to the nozzle hole diameter. Infill pattern was determined by using line type of 100%. Nozzle hole diameter of 0.3, 0.4, 0.5 and 0.6mmwas compared in thiswork. The results show that bigger nozzle hole diameter enhanced the density and tensile strength of the products thought it was not linearly correlation.

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Section: Introductionmentioning

confidence: 99%

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

et al. 2020

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“…Most chemical properties, mechanical properties and electronic properties are relative to the surface energy, or the geometric potential [21][22][23][24][25][26][27][28][29]. Any surface can produce a boundary-induced potential, for example, the gravity of the Earth [30].…”

Section: Surface Energy(geometric Potential) Vs Surface Areamentioning

confidence: 99%

Fabrication of PVDF/PES nanofibers with unsmooth fractal surfaces by electrospinning: A general strategy and formation mechanism

Lin

Liu

et al. 2021

THERM SCI

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Smaller fibers are welcome in many applications due to larger surface area, but there is a threshold for smallest fibers for a fixed spinning system. In order to further improve surface area, hierarchical structure is considered in this paper using electrospinning. A bi-solvent system is used in our experiment for fast solvent evaporation. Unsmooth nanofibers are obtained, and the formation mechanism is elucidated.

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“…The geometric potential theory [23][24][25][26] implies that any surface can produce a force, it can be gravity, Casimir force, capillary force or others. The geometric potential theory can well explain how to form a shaped fiber or an unsmooth fiber in the spinning process [27,28], the smart adhesion by the surface treatment [29], the cell orientation during the cell culture [30], and capillary effect [31,32]. It is also interesting to find that Fangzhu, an ancient device in more than 5000 years ago, collect water from air, works according to the geometric potential of the Fangzhu's surface [33].…”

Section: Fig3 Sem Images Of the Top Surfaces Of Lotus Veinmentioning

confidence: 99%

High energy surface as a receptor in electrospinning: A good switch for hydrophobicity to hydrophilicity

Tian

2021

THERM SCI

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The lotus leaf surface is modified by covering nanofibers to check its wetting property. The well-known lotus effect of the modified surface is greatly weakened, and a hydrophilic property is found. The geometric potential theory is used to explain the phenomenon, it shows that the two adjacent nanofibers can produce a high geometric potential to push water molecules to move along the fibers, as a result, a hydrophilic surface is predicted after surface modification. An experiment is designed to elucidate the main factors affecting the wetting property of the modified surface of lotus leaf.

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On the cross-section of shaped fibers in the dry spinning process: Physical explanation by the geometric potential theory

Cited by 41 publications

References 22 publications

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

Fabrication of PVDF/PES nanofibers with unsmooth fractal surfaces by electrospinning: A general strategy and formation mechanism

High energy surface as a receptor in electrospinning: A good switch for hydrophobicity to hydrophilicity

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