Results 1 to 10 of about 27,413 (265)

Fungal Biodegradation of Polyurethanes [PDF]

open access: yesJournal of Fungi, 2023
Polyurethanes (PURs) are versatile polymers used in a wide variety of fields, such as the medical, automotive, textile, thermal insulation, and coating industries as well as many everyday objects. Many PURs have applications that require a long service life, sometimes with exposure to aggressive conditions.
Clotilde Maestri   +4 more
openaire   +3 more sources

Synthesis of bio-based thermoplastic polyurethane elastomers containing isosorbide and polycarbonate diol and their biocompatible properties. [PDF]

open access: yes, 2015
A new family of highly elastic polyurethanes (PUs) partially based on renewable isosorbide were prepared by reacting hexamethylene diisocyanate with a various ratios of isosorbide and polycarbonate diol 2000 (PCD) via a one-step bulk condensation ...
Gong, MS, Kang, MS, Knowles, JC, Oh, SY
core   +1 more source

Deterioration rate of renewable polyurethanes composites prior to ultra violet irradiation exposure [PDF]

open access: yes, 2019
Polyurethanes (PU's) made from renewable and sustainable materials are one of the most important groups of polymers because of their versatility with wide range of grades, densities and stiffness.
Abdullah, Nur Munirah   +1 more
core   +1 more source

Polyurethane Toggles [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2020
We consider the involutions known as toggles, which have been used to give simplified proofs of the fundamental properties of the promotion and evacuation maps. We transfer these involutions so that they generate a group $\mathscr P_n$ that acts on the set $S_n$ of permutations of $\{1,\ldots,n\}$.
openaire   +2 more sources

Rheological and Mechanical Gradient Properties of Polyurethane Elastomers for 3D-Printing with Reactive Additives [PDF]

open access: yes, 2019
Polyurethane (PU) elastomers with their broad range of strength and elasticity are ideal materials for additive manufacturing of shapes with gradients of mechanical properties.
Auhl, Dietmar   +4 more
core   +1 more source

Development of water surface mobile garbage collector robot [PDF]

open access: yes, 2021
This paper presents a prototype of Water Surface Mobile Garbage Collector Robot built in motivation to educate the people to love and monitor the health of our rivers by collecting the trash themselves using mobile robot.
Kamarudin, Nurul Anis Syahira   +5 more
core   +1 more source

Influence of different polishing materials in the material removal of steel samples [PDF]

open access: yes, 2018
The quality of injection moulded polymer optic parts depends on the surface finish of the respective mould. In order to improve and control the surface finish of the mould it is important to be able to keep the material removal constant during the ...
Almeida, Rui   +3 more
core   +2 more sources

Kinetic Investigation of Polyurethane Rubber Formation from CO2‐Containing Polyols [PDF]

open access: yes, 2020
A novel CO2 utilization technology allows for the inclusion of CO2 as carbonate units and double bond moieties to give additional functionality in polyether polyols.
Buchner, Georg A.   +5 more
core   +1 more source

Water Content and Thermoplastic Polyurethane Effects on Thrombosis Clotting [PDF]

open access: yes, 2019
One of the main factors that can increase the chance of heart disease is unwanted blood clotting, or thrombosis. In addition, implantable biomaterials and/or medical devices are likely to trigger a series of adverse reactions that can lead to ...
Chou, Shih-Feng   +3 more
core   +1 more source

Nanocomposites with shape memory behavior based on a segmented polyurethane and magnetic nanostructures [PDF]

open access: yes, 2018
Shape-memory composites based on a commercial segmented polyurethane and magnetite (Fe⁠3O⁠4) nanoparticles(NPs) were prepared by a simple suspension casting method.
Actis, Daniel Guillermo   +5 more
core   +1 more source

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