Results 71 to 80 of about 241,122 (250)

Oxidation Behavior and Decomposition Kinetics of Mixed-Waste Biomass Material

open access: yesBioResources, 2022
In Taiwan, approximately 379,000 automobiles and 588,000 motorcycles were recycled in 2019. Rigid polyurethane foam is one of the principal components of auto shredder residue. The amount of rigid polyurethane foam from the recycling of waste vehicles is
Po-Heng Lin   +4 more
doaj   +2 more sources

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han   +5 more
wiley   +1 more source

Study on Creep Mechanical Properties of Non-Water Reacting Polyurethane Grouting Material

open access: yesAdvances in Materials Science and Engineering, 2022
Non-water reacting polyurethane is a new type of grouting material for support reinforcement and emergency rescue, whose creep mechanical behavior is directly related to the stability and safety of the reinforcement project.
Heng Liu   +4 more
doaj   +1 more source

Sulfur‐Free Ultrahigh‐Refractive‐Index Polymers Enabled by Densely Packed Oxygen‐Bridged Dibenzofuran‐Cardo Architectures

open access: yesAdvanced Functional Materials, EarlyView.
A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy   +5 more
wiley   +1 more source

Synthesis and characterization of thermal-responsive chitin-based polyurethane copolymer as a smart material

open access: yes, 2014
A chitin-based polyurethane (TRCPU) organogel composed of isophorone diisocyanate (IPDI), polyethylene glycol (PEG) and chitin is shown to undergo a temperature-dependent sal-to-gel transition in polar organic solvents.
林俊彬;張志豪;吳耀銘   +1 more
core   +1 more source

Analysis on Mechanical Characteristics of the Polyurethane Base Plate for Ballastless Track of High Speed Railway

open access: yesChemical Engineering Transactions, 2017
In this paper, test method is used in giving tensile strength test, elongation at break test, permanent compressive deformation, oil resistance test and dynamic and static stiffness test to the aging and non-aging polyurethane base plates, and it is used
Wenshuai Chen
doaj   +3 more sources

Effect of different catalysts on recovery and reuse of waste polyurethane rigid foam

open access: yesMaterials Research Express, 2021
The sharp increase of waste polyurethane rigid foam has caused great harm to the natural environment. Ethylene glycol (EG) and propylene glycol (PG) was the alcoholysis agents, and KOH and Zn _3 [Co(CN) _6 ] _2 (DMC) were used as catalysts for ...
Xiaohua Gu   +3 more
doaj   +1 more source

Mono‐Material Polydisulfides for Pressure Sensitive Adhesive Tapes With Closed‐Loop Recyclability

open access: yesAdvanced Functional Materials, EarlyView.
A high‐performance pressure‐sensitive adhesive (PSA) tape is developed where both the adhesive layer and plastic backing layer can be recycled back to monomer in a closed‐loop cycle. Both layers of the tape are composed of analogous polydisulfide copolymers using only two unique monomers, thus giving it a mono‐material design and enabling recycling of ...
Woojung Ham   +3 more
wiley   +1 more source

Supplementary Dataset for: "Genetic basis for the biodegradation of a polyether-polyurethane-acrylic copolymer by a landfill microbial community inferred by metagenomic deconvolution analysis"

open access: yes, 2023
This Dataset contains raw data referring to the manuscript: "Genetic basis for the biodegradation of a polyether-polyurethane-acrylic copolymer by a landfill microbial community inferred by metagenomic deconvolution analysis" by Sánchez-Reyes et al.,
M. Javier Cruz-Gómez (14290808)   +6 more
core   +1 more source

Preferential Interfacial Engineering of Hydrogels via Interdigitated Nanoparticle Assembly

open access: yesAdvanced Functional Materials, EarlyView.
Robust surface functionalization of hydrogel surfaces is performed via interdigitated metal nanoparticle assembly, inducing strong affinity with the hydrogel matrix. The partially exposed nanoparticle domains act as interfacial nanobridges that mediate both chemical and physical bonding with diverse materials, including small molecules, fluorous ...
Hyeonjin Kim   +11 more
wiley   +1 more source

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