Results 61 to 70 of about 31,185 (305)
Sustainability in polyurethanes: old hat or new strategy for future developments?
npj Materials SustainabilityPolyurethanes are facing health and environmental problems related to their chemistry, processing and end-of-life management. This review summarizes the most recent strategies within the framework of sustainability and circularity related to the use of ...
Giulio Malucelli, Alessandra Lorenzetti
doaj +1 more source
eXPRESS Polymer Letters, 2016 Segmented linear polyurethanes (PUs) containing Diels-Alder (DA) adduct were synthesized in toluene solution from poly(ε-caprolactone) (PCL, Mn = 10, 25 and 50 kg/mol), diisocyanate (methylene diphenyl diisocyanate (MDI), 2,4-toluene diisocyanate (TDI ...
Cs. Lakatos +5 more
doaj +1 more source
Membrane Wrapping for High Capacity and Rapidly Switchable Adhesives
Advanced Functional Materials, EarlyView.A membrane‐wrapping mechanism enables high‐capacity, rapidly switchable adhesion by coupling suction, friction, and adhesion. Broadband performance is achieved in dry and underwater conditions, allowing fast, reversible manipulation of objects of diverse sizes and shapes, from delicate eggs and berries to flat, complex, or heavy objects. These outcomes
Yeunhee Kim +2 more
wiley +1 more source
Les lipides : une matière première alternative pour la synthèse de polymères de spécialités
Oléagineux, Corps gras, Lipides, 2012 Currently, the dependence of the chemical industry on fossil fuels is very important (95 % of chemicals from fossil fuels). In addition, the scarcity of nonrenewable resources is one – with climate change, pollution, increasing population, limited water ...
Chollet Guillaume +3 more
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eXPRESS Polymer Letters, 2016 A series of coumarin-containing branched polyurethanes based on polycaprolactones, hexamethylene diisocyanate and a monohydroxylated coumarin monomer with 5 and 10% content by weight of coumarin units were successfully prepared.
R. Seoane Rivero +4 more
doaj +1 more source
Preparation of highly fluorinated polyurethanes [PDF]
, 1971 New polyurethanes, formed from a reaction of a prepolymer diol and a perfluorinated diisocyanate, are nonflammable and possess high corrosion resistance and good low temperature flexibility.
Rochow, S. E., Stump, E. C., Jr.
core +1 more source
Advanced Functional Materials, EarlyView.Development of a transparent, self‐sanitizing antimicrobial coating technology applicable to a wide range of materials and surfaces‐including touchscreens, transparent substrates, and metal, plastic, and glass‐regardless of pathogen type. The spray‐coated, UV‐cross‐linked imidazole‐based quaternary ammonium chloride materials provide broad‐spectrum ...
Surjith Kumaran +6 more
wiley +1 more source
BIOEDAGRADATION OF THERMOPLASTIC POLYURETHANES [PDF]
, 1982 Pollution of the environment by the waste of polymers – the planetary problem. Decomposition of waste takes place in the environment during decades and centuries.
Sytar, Vladymyr +3 more
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Kinetic Investigation of Polyurethane Rubber Formation from CO2‐Containing Polyols [PDF]
, 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
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Advanced Functional Materials, EarlyView.Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani +6 more
wiley +1 more source