Fibre Spinning with Axial and Radial Viscosity Distributions as Viscoelastic Flow with Dominating Extension

1990 ◽  
pp. 525-527
Author(s):  
Stefan Zahorski
Keyword(s):  
Viscoelastic Flow ◽  
Fibre Spinning

scholarly journals Drag enhancement and drag reduction in viscoelastic flow

2018 ◽  
Vol 3 (10) ◽  
Author(s):  
Atul Varshney ◽  
Victor Steinberg
Keyword(s):  
Drag Reduction ◽  
Viscoelastic Flow

scholarly journals Hierarchically Porous Silk/Activated-Carbon Composite Fibres for Adsorption and Repellence of Volatile Organic Compounds

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1207
Author(s):  
Aled D. Roberts ◽  
Jet-Sing M. Lee ◽  
Adrián Magaz ◽  
Martin W. Smith ◽  
Michael Dennis ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Carbon Composite ◽  
Hierarchically Porous ◽  
Surface Areas ◽  
Regenerated Silk Fibroin ◽  
Volatile Organic ◽  
Fibre Spinning ◽  
Solution Blow Spinning

Fabrics comprised of porous fibres could provide effective passive protection against chemical and biological (CB) threats whilst maintaining high air permeability (breathability). Here, we fabricate hierarchically porous fibres consisting of regenerated silk fibroin (RSF) and activated-carbon (AC) prepared through two fibre spinning techniques in combination with ice-templating—namely cryogenic solution blow spinning (Cryo-SBS) and cryogenic wet-spinning (Cryo-WS). The Cryo-WS RSF fibres had exceptionally small macropores (as low as 0.1 µm) and high specific surface areas (SSAs) of up to 79 m2·g−1. The incorporation of AC could further increase the SSA to 210 m2·g−1 (25 wt.% loading) whilst also increasing adsorption capacity for volatile organic compounds (VOCs).

scholarly journals Cribellate thread production as model for spider’s spinneret kinematics

2021 ◽  
Author(s):  
Margret Weissbach ◽  
Marius Neugebauer ◽  
Anna-Christin Joel
Keyword(s):  
Molecular Structure ◽  
Mechanical Properties ◽  
Fibre Type ◽  
Material Science ◽  
Spider Silk ◽  
Functional Unit ◽  
Material Strength ◽  
Spinning Process ◽  
Fibre Spinning ◽  
House Spider

AbstractSpider silk attracts researchers from the most diverse fields, such as material science or medicine. However, still little is known about silk aside from its molecular structure and material strength. Spiders produce many different silks and even join several silk types to one functional unit. In cribellate spiders, a complex multi-fibre system with up to six different silks affects the adherence to the prey. The assembly of these cribellate capture threads influences the mechanical properties as each fibre type absorbs forces specifically. For the interplay of fibres, spinnerets have to move spatially and come into contact with each other at specific points in time. However, spinneret kinematics are not well described though highly sophisticated movements are performed which are in no way inferior to the movements of other flexible appendages. We describe here the kinematics for the spinnerets involved in the cribellate spinning process of the grey house spider, Badumna longinqua, as an example of spinneret kinematics in general. With this information, we set a basis for understanding spinneret kinematics in other spinning processes of spiders and additionally provide inspiration for biomimetic multiple fibre spinning.

Numerical simulation of blow molding?Viscoelastic flow analysis of parison formation

1995 ◽  
Vol 35 (19) ◽  
pp. 1546-1554 ◽  
Author(s):  
Shuichi Tanoue ◽  
Yoshifumi Kuwano ◽  
Toshihisa Kajiwara ◽  
Kazumori Funatsu ◽  
Kousuke Terada ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Flow Analysis ◽  
Viscoelastic Flow ◽  
Blow Molding ◽  
Parison Formation

Computer simulation of viscoelastic flow at the entry region

1996 ◽  
Vol 36 (3) ◽  
pp. 368-377 ◽  
Author(s):  
K. W. L. Loh ◽  
S. H. Teoh ◽  
A. A. O. Tay
Keyword(s):  
Computer Simulation ◽  
Viscoelastic Flow
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