Results 51 to 60 of about 31,185 (305)

Robust and Reversible Thermofluorescence in Solvent‐Free Thermoplastic Polyurethane Composites

open access: yesAdvanced Functional Materials, EarlyView.
Thermofluorescent polymer composites with high‐contrast optical outputs are prepared by solvent‐free blending of indenoquinacridone dye into a thermoplastic polyurethane matrix. The temperature‐dependent fluorescence originates from aggregation–dissociation of the dye molecules, regulated by competing hydrogen bonds from the polymer matrix.
Guanghua Yu   +8 more
wiley   +1 more source

Curcumin based polyurethane materials and their functional applications: a review

open access: yesMaterials Research Express
Bio-based polyurethanes are novel material with potential advantages for sustainable development, and their development play significant roles in promoting sustainability.
Qiaoqiao Lan   +7 more
doaj   +1 more source

Occupational exposure to diisocyanates in polyurethane foam factory workers

open access: yesInternational Journal of Occupational Medicine and Environmental Health, 2015
Objectives: The aim of the study was to evaluate health effects of occupational exposure to diisocyanates (DIC) among polyurethane foam products factory workers.
Dominika Świerczyńska-Machura   +9 more
doaj   +1 more source

Smart polyurethane composites: Magnetic-field-sensitive crosslinked shape-memory polyurethane composites

open access: yeseXPRESS Polymer Letters, 2023
Smart polymers synthesized from renewable sources are precious because of the environmental pressures of producing polymers from fossil fuels. This study develops a new formulation of polyurethane (PU) from partly renewable resources.
Berna Öztürk   +3 more
doaj   +1 more source

Highly fluorinated polyurethanes [PDF]

open access: yes, 1973
The reaction perfluorinated hydroxyl terminated polyether with diisocyanate to form polyurethane is discussed.
Rochow, S. E., Stump, E. C., Jr.
core   +1 more source

Adaptive 4D‐Printed Vascular Stents With Low‐Temperature‐Activated and Intelligent Deployment

open access: yesAdvanced Functional Materials, EarlyView.
Microarchitected coronary artery stents were fabricated using a polycaprolactone (PCL)‐based shape memory polymer (SMP) composite via projection micro‐stereolithography (PµSL) 4D printing. By incorporating diethyl phthalate (DEP) as a plasticizer, the thermal transition temperature (Ttran) was modulated to about 37°C, enabling rapid and autonomous ...
Yannan Li   +12 more
wiley   +1 more source

Achieving High Excipient Efficiency with Elastic Thermoplastic Polyurethane by Ultrasound Assisted Direct Compression

open access: yesPharmaceutics, 2019
Ultrasound assisted compression (USAC) is a manufacturing technique which applies thermal and mechanical energy to the powder bed, producing tablets with improved characteristics compared to the direct compression process.
Eduardo Galdón   +2 more
doaj   +1 more source

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

open access: yesAdvanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi   +5 more
wiley   +1 more source

Synthesis of a new class of highly fluorinated aliphatic diisocyanates [PDF]

open access: yes, 1971
Synthesis is basis for preparation of polyurethanes that are compatible with liquid oxygen.
Warner, D. A.
core   +1 more source

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson   +3 more
wiley   +1 more source

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