Results 21 to 30 of about 15,336 (245)

Synthesis of Chitosan Modified Polyurethane Foam for Adsorption of Mercury (II) Ions

open access: yesJurnal Bahan Alam Terbarukan, 2018
Mercury from the traditional gold mining activities in Aceh Jaya Regency causes water source and thus residents are exposed to mercury metals. In organic and inorganic conditions, mercury is toxic to the human body, causes damage to the nerve system ...
Darmadi Darmadi   +4 more
doaj   +1 more source

Histopathological reaction over prosthesis surface covered with silicone and polyurethane foam implanted in rats [PDF]

open access: yesActa Cirúrgica Brasileira, 2012
PURPOSES: To evaluate whether polyurethane foam leads more intense foreign-body reaction than silicone foam. To compare the vascularization of the capsules surrounding the foam implants.
Jorge Wagenführ-Júnior   +5 more
doaj   +1 more source

Study on green preparation of multi-branched gold nanoparticles loaded flexible polyurethane foam for antibacterial dressing

open access: yesNanocomposites, 2022
Antibacterial foam dressing has been developed in recent years based on polymeric membranes and silver ions or silver nanoparticles as antibacterial components. However, silver ions or silver nanoparticles have cytotoxicity to humans.
Phat Trong Huynh   +6 more
doaj   +1 more source

Evaluating compressive properties and morphology of expandable polyurethane foam for use in a synthetic paediatric spine

open access: yesJournal of Materials Research and Technology, 2020
An expandable rigid PU foam can turns into complex shapes, with a shell like structure on the outside and honeycomb structure on the inside, which can be easily shaped to a vertebra form.
Nor Amalina Muhayudin   +3 more
doaj   +1 more source

Egyptian crude oil sorbent based on coated polyurethane foam waste

open access: yesEgyptian Journal of Petroleum, 2020
In this study, free radical polymerization of hydrophobic monomer namely lauryl methacrylate & hexadecene is coated on the flexible polyurethane foam waste as an modifier of the non-polar moiety.
Mohamed Keshawy   +2 more
doaj   +1 more source

Determination of thermo-mechanical properties of recycled polyurethane from glycolysis polyol

open access: yesScientific African, 2021
Polyurethane foam is one of the most versatile polymers widely used in the automotive industry. However, due to the rising amount of polyurethane foam waste in the environment, there is growing research attention focusing on circular economy solutions to
James K. Njuguna   +5 more
doaj   +1 more source

Experimental and Numerical Analysis of the Impact Resistance of Polyurethane Foam Aluminum-Concrete Sandwich Structures

open access: yesBuildings
The objective of this research paper is to examine the shock-absorption capabilities of sandwich structures that utilize polyurethane foam and aluminum as energy-absorbing materials.
Yong Zhang, Fenfang Yin, Junwei Ma
doaj   +1 more source

Performances of Green Velvet Material (PLON) used in Upholstered Furniture

open access: yesBioResources, 2023
Green Velvet Material (PLON), which is prepared from polyester slices, has been called a green material based on its ester composition, its ability to be degraded, and the possibility of recovering the value of used material by reprocessing.
Zhongyu Luo, Wei Xu, Shuangshuang Wu
doaj   +2 more sources

From Geometry to Function: Programmable Mechanical Response in 3D‐Printed Adipose‐Inspired Soft Metamaterials

open access: yesAdvanced Functional Materials, EarlyView.
Geometry‐driven design of soft cellular metamaterials is systematically investigated by combining experiments, finite element modeling, and statistical prediction. The study quantifies how unit cell geometry and material properties govern stiffness, instability, densification, and energy absorption.
Alice Berardo   +4 more
wiley   +1 more source

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

open access: yesAdvanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li   +12 more
wiley   +1 more source

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