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Fibers, Volume 9, Issue 5

May 2021 - 7 articles

Cover Story: Polymer hollow fiber membranes have several benefits: high packing density per unit volume in a membrane module, good flexibility, easy handling and low area of membrane equipment. A novel method for the preparation of highly permeable hollow fiber membranes from polysulfone that involves the processing of the dope solution at a temperature close to the lower critical solution temperature (LCST) and the temperature of the bore fluid above the LCST was proposed. Hollow fiber membranes with pure water flux of 1200 L·m−2·h−1 and a sponge-like macrovoid-free structure were obtained via LCST-thermally induced phase separation by a free fall spinning technique. View this paper
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Articles (7)

  • Article
  • Open Access
12 Citations
5,028 Views
15 Pages

7 May 2021

Research on carbon fiber oxide coatings is primarily focused on metal matrix composites. Such coatings act as a diffusion barrier between a matrix and a fiber and, in addition, they can be weak boundaries that significantly increase the mechanical pr...

  • Article
  • Open Access
19 Citations
4,833 Views
17 Pages

6 May 2021

Analyzing representative volume elements with the finite element method is one method to calculate the local stress at the microscale of short fiber reinforced plastics. It can be shown with Monte-Carlo simulations that the stress distribution depend...

  • Technical Note
  • Open Access
6 Citations
4,662 Views
4 Pages

Density Profile Analysis of Laminated Beech Veneer Lumber (BauBuche)

  • Nick Engehausen,
  • Jan T. Benthien,
  • Martin Nopens and
  • Jörg B. Ressel

5 May 2021

An irreversible swelling was detected in laminated beech veneer lumber within the initial moistening. Supported by the facts that the lay-up of the glued veneers is exposed to high pressure during hot pressing, and that the density of the finished ma...

  • Article
  • Open Access
19 Citations
6,992 Views
20 Pages

Rammed Earth with Straw Fibers and Earth Mortar: Mix Design and Mechanical Characteristics Determination

  • Maria Francesca Sabbà,
  • Mariateresa Tesoro,
  • Cecilia Falcicchio and
  • Dora Foti

4 May 2021

Raw earth is one of the oldest building materials, which is suitable for various uses: from the construction of load-bearing walls to use for plasters and finishes. The presence of straw fibers can give different behavior to this material. The presen...

  • Article
  • Open Access
8 Citations
4,791 Views
24 Pages

3 May 2021

The existing non-ductile RC structures built prior to the 1960s–1970s were mainly conceived to carry only vertical loads. As a result, the columns of these structures demonstrate poor overall hysteresis behavior during strong earthquakes, dominated b...

  • Feature Paper
  • Article
  • Open Access
20 Citations
4,773 Views
17 Pages

Twisted Silica Microstructured Optical Fiber with Equiangular Spiral Six-Ray Geometry

  • Anton V. Bourdine,
  • Alexey Yu. Barashkin,
  • Vladimir A. Burdin,
  • Michael V. Dashkov,
  • Vladimir V. Demidov,
  • Konstantin V. Dukelskii,
  • Alexander S. Evtushenko,
  • Yaseera Ismail,
  • Alexander V. Khokhlov and
  • Artem A. Kuznetsov
  • + 11 authors

2 May 2021

This work presents fabricated silica microstructured optical fiber with special equiangular spiral six-ray geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication optical fibers of ratified ITU...

  • Article
  • Open Access
18 Citations
6,442 Views
12 Pages

Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature

  • Tatiana V. Plisko,
  • Alexandr V. Bildyukevich,
  • Liang Zhao,
  • Weiqing Huang,
  • Vladimir V. Volkov and
  • Zuohua Huang

2 May 2021

This study deals with the investigation of the phase state of the polymer systems from polysulfone (PSF) with the addition of polyethylene glycol (PEG-400, Mn = 400 g·mol−1) and polyvinylpyrrolidone (PVP K-30, Mn = 40,000 g·mol−1) in N,N-dimethylacet...

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Fibers - ISSN 2079-6439