Results 11 to 20 of about 31,185 (305)

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

Asymmetrically Substituted s‐Triazine Phosphonates by One‐Step Synthesis

open access: yesChemistryOpen, 2023
Asymmetrically substituted s‐triazine phosphonates with up to three different phosphonate groups C3N3RR'R” with R, R’, R”=PO(OR”’) and R”’=for example, methyl, ethyl, isopropyl or n‐butyl are interesting as polymer additives like flame retardants ...
Claudia Vogt   +5 more
doaj   +1 more source

Attachment of inorganic moieties onto aliphatic polyurethanes

open access: yesMaterials Research, 2007
Polyurethanes have been used in a series of applications due basically to their versatility in terms of controlling the behavior by altering basically the type of reagents used.
Eliane Ayres   +2 more
doaj   +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

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

Sustained Release Drug Delivery Applications of Polyurethanes

open access: yesPharmaceutics, 2018
Since their introduction over 50 years ago, polyurethanes have been applied to nearly every industry. This review describes applications of polyurethanes to the development of modified release drug delivery.
Michael B. Lowinger   +3 more
doaj   +1 more source

Effect of Glycerol in Soft and Hard Segments on Properties of Shape Memory Polyurethane [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2023
Hypothesis: Chemical cross-linked shape memory polyurethanes (CSMPUs) can have various applications in different fields such as medicine, where mechanical behavior and shape memory are improved in these samples compared to linear shape memory ...
Mahdi Sakhavi   +3 more
doaj   +1 more source

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

The Effect of Accelerated Aging Conditions on the Properties of Rigid Polyurethane-Polyisocyanurate Foams Modified by Cinnamon Extract

open access: yesApplied Sciences, 2019
Two series of rigid polyurethane-polyisocyanurate foams (RPU/PIR) modified by cinnamon extract (series C_0t and CU_0t) were obtained. One RPU/PIR series contained a commercial flame retardant (C_0t) in the formulation.
Joanna Liszkowska   +5 more
doaj   +1 more source

Structural reorganization and crack-healing properties of hydrogels based on dynamic diselenide linkages

open access: yesScience and Technology of Advanced Materials, 2020
We report the dynamic behavior of diselenide-containing hydrophilic polyurethanes and hydrogels based on diselenide exchange reactions in an aqueous media.
Hao Xu   +6 more
doaj   +1 more source

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