The homogeneity of the polymer composition as a factor in the properties of Capron cord fibre

1972 ◽  
Vol 3 (1) ◽  
pp. 45-46 ◽  
Author(s):  
M. Ya. Gusakov ◽  
I. A. Sviridova ◽  
I. N. Maiboroda
Keyword(s):  
Polymer Composition ◽  
Cord Fibre ◽  
Capron Cord

The influence of the structure of the polycaproamide on the properties of Capron cord fibre

1972 ◽  
Vol 3 (1) ◽  
pp. 47-49
Author(s):  
M. Ya. Gusakov ◽  
L. A. Voedilo ◽  
L. I. Gusakova ◽  
I. A. Sviridova ◽  
N. I. Bychkovskii
Keyword(s):  
Cord Fibre ◽  
Capron Cord

The technological cycle of spinning Capron cord fibre on the PP-1-1000IR machine

1972 ◽  
Vol 3 (1) ◽  
pp. 50-52
Author(s):  
M. Ya. Gusakov ◽  
L. A. Voedilo ◽  
A. V. Natalushko ◽  
I. N. Maiboroda
Keyword(s):  
Cord Fibre ◽  
Capron Cord ◽  
Technological Cycle

Capron cord fibre modified with a graft of vinyl fluoride

1973 ◽  
Vol 4 (5) ◽  
pp. 565-566
Author(s):  
Kh. Usmanov ◽  
A. Yulchibaev ◽  
T. Sirlibaev ◽  
R. Yusupaliev ◽  
S. Yulchibaeva
Keyword(s):  
Cord Fibre ◽  
Vinyl Fluoride ◽  
Capron Cord

Thermostabilizer N-1 for Capron cord fibre pro duction by the continuo us method

1975 ◽  
Vol 6 (4) ◽  
pp. 360-361
Author(s):  
L. V. Kutina ◽  
V. N. Rozhanchuk ◽  
Ya. Ya. Ambainis ◽  
I. T. Nefedova ◽  
L. G. Romanovskaya
Keyword(s):  
Cord Fibre ◽  
Capron Cord

An electric drive for a four-position Capron cord fibre spinning machine

1971 ◽  
Vol 2 (1) ◽  
pp. 71-74
Author(s):  
A. B. Smagorinskii ◽  
O. G. Kostyuchenko ◽  
N. M. Taranchuk
Keyword(s):  
Electric Drive ◽  
Cord Fibre ◽  
Capron Cord ◽  
Fibre Spinning

The Role of Stent Design and Polymers in Safety Outcomes – A Review

2012 ◽  
Vol 8 (1) ◽  
pp. 63
Author(s):  
Carlo Zivelonghi ◽  
Giulia Geremia ◽  
Michele Pighi ◽  
Flavio Ribichini ◽  
◽  
...  
Keyword(s):  
Clinical Performance ◽  
Drug Carrier ◽  
Chemical Properties ◽  
Vascular Wall ◽  
Radial Force ◽  
Vascular Trauma ◽  
Polymer Composition ◽  
Drug Eluting Stent ◽  
Stent Design ◽  
Drug Elution

Each component of a drug-eluting stent (DES) contributes to the safety of the device. Continuous efforts are being dedicated to the search of the optimal compromise between facility of use, safety and long-term efficacy. Shorter balloons reduce the vascular trauma beyond the stent struts; the metallic composition of the stent platform and the platform itself interact with the vascular wall in a long-lasting equilibrium between radial force, vessel patency and reparative cellular regrowth. The modality of drug elution is largely regulated by the chosen drug carrier, rather than by the chemical properties of the drug itself. Drug elution can be accomplished by permanent polymers that remain in the vessel wall forever, by biodegradable polymers that leave the naked metallic structure behind after their complete absorption, or even by direct release of the drug from stent reservoirs. The clinical performance of DESs has been exhaustively assessed in a large number of studies that have showed rapid and continuous improvements, from the first-generation DESs to the latest devices, based on substantial changes in stent design and polymer composition.

scholarly journals Microplastic contamination of the drilling bivalve Hiatella arctica in Arctic rhodolith beds

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sebastian Teichert ◽  
Martin G. J. Löder ◽  
Ines Pyko ◽  
Marlene Mordek ◽  
Christian Schulbert ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Water Depth ◽  
The Arctic ◽  
Polymer Composition ◽  
Bivalve Species ◽  
Filter Feeder ◽  
Hiatella Arctica ◽  
Long Term Consequences ◽  
Water Depths

AbstractThere is an increasing number of studies reporting microplastic (MP) contamination in the Arctic environment. We analysed MP abundance in samples from a marine Arctic ecosystem that has not been investigated in this context and that features a high biodiversity: hollow rhodoliths gouged by the bivalve Hiatella arctica. This bivalve is a filter feeder that potentially accumulates MPs and may therefore reflect MP contamination of the rhodolith ecosystem at northern Svalbard. Our analyses revealed that 100% of the examined specimens were contaminated with MP, ranging between one and 184 MP particles per bivalve in samples from two water depths. Polymer composition and abundance differed strongly between both water depths: samples from 40 m water depth showed a generally higher concentration of MPs and were clearly dominated by polystyrene, samples from 27 m water depth were more balanced in composition, mainly consisting of polyethylene, polyethylene terephthalate, and polypropylene. Long-term consequences of MP contamination in the investigated bivalve species and for the rhodolith bed ecosystem are yet unclear. However, the uptake of MPs may potentially impact H. arctica and consequently its functioning as ecosystem engineers in Arctic rhodolith beds.

scholarly journals Water uptake of various electrospun nonwovens

2020 ◽  
Vol 6 (3) ◽  
pp. 155-158
Author(s):  
Katharina Wulf ◽  
Volkmar Senz ◽  
Thomas Eickner ◽  
Sabine Illner
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Water Absorption ◽  
Water Uptake ◽  
Biomedical Applications ◽  
High Surface ◽  
Volume Ratio ◽  
Polymer Composition ◽  
Water Wetting ◽  
Morphology Changes

AbstractIn recent years, nanofiber based materials have emerged as especially interesting for several biomedical applications, regarding their high surface to volume ratio. Due to the superficial nano- and microstructuring and the different wettability compared to nonstructured surfaces, the water absorption is an important parameter with respect to the degradation stability, thermomechanic properties and drug release properties, depending on the type of polymer [1]. In this investigation, the water absorption of different non- and plasma modified biostable nanofiber nonwovens based on polyurethane, polyester and polyamide were analysed and compared. Also, the water absorption by specified water wetting, the contact angle and morphology changes were examined. The results show that the water uptake is highly dependent on the surface modification and the polymer composition itself and can therefore be partially changed.

Sign in / Sign up

Export Citation Format

Share Document