Results 41 to 50 of about 3,344 (226)

Cyclodextrin‐Based Hollow Nanocapsules Synthesized Using Catalytic Templates

Polymers for Advanced Technologies, Volume 37, Issue 4, April 2026.
ABSTRACT Cyclodextrin‐based hollow nanocapsules were synthesized by a core‐shell method using catalytic silica nanoparticle cores and a β‐cyclodextrin‐based polyurethane shell. Silica nanoparticles prepared by the “Stober” method were first functionalized with a molecular spherical monolayer of the tertiary amine‐terminated silane, N,N‐dimethyl‐3 ...
Alexander D. Q. Li
wiley   +1 more source

Flame retardant spandex type polyurethanes [PDF]

, 1978
Flame retardant elastomeric compositions were developed, comprised of: (1) spandex type polyurethane having incorporated into the polymer chain, halogen containing polyols; (2) conventional spandex type polyurethanes in physical admixture flame retardant
Howarth, J. T., Massucco, A. A., Sheth, S., Sidman, K. R.   +3 more
core   +1 more source

Rheological and Mechanical Gradient Properties of Polyurethane Elastomers for 3D-Printing with Reactive Additives [PDF]

, 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, Gerlitzky, Georg, Uhlmann, Eckart, Wagner, Manfred H., Wang, Peng   +4 more
core   +1 more source

Polyurethane Cascade Depolymerization by a Combination of Thermal Pretreatment and Enzymatic Hydrolysis

ChemSusChem, Volume 19, Issue 5, 13 March 2026.
This study explored the cascade depolymerization of a polyether‐polyester polyurethane based on a combination of low‐temperature thermal treatment and enzymatic hydrolysis. Heat pretreatment changed the physicochemical properties of polyurethane, followed by cutinase‐catalyzed hydrolysis, leading to an increase in weight loss and the production of two ...
Shengwei Sun, Sathiyaraj Subramaniyan, Ganapathy Ranjani, Leandro Cid Gomes, Diana Bernin, Thomas Bayer, Uwe T. Bornscheuer, Minna Hakkarainen, Per‐Olof Syrén   +8 more
wiley   +1 more source

Hydrophobic Cellulose Acetate Aerogels for Thermal Insulation

Gels, 2022
As naturally derived material, cellulose aerogels have excellent thermal insulation properties due to their unique high porosity and three-dimensional mesoporous structure.
Sizhao Zhang, Zhouyuan Yang, Xing Huang, Jing Wang, Yunyun Xiao, Junpeng He, Jian Feng, Shixian Xiong, Zhengquan Li   +8 more
doaj   +1 more source

Ultra‐Improved Interfacial Strength Between Metallic Surface and Polyurethane via Cost‐Effective Anodizing Process

Advanced Materials Interfaces, Volume 13, Issue 4, 17 February 2026.
SAA significantly enhanced Al/PU bonding, increasing SLSS by up to 920% and fracture energy by 15 100% through optimized micro‐nano porous surfaces. RSM identified the optimal anodizing conditions, while ML confirmed sulfuric acid concentration and roughness as dominant predictors of strength.
Umut Bakhbergen, Sherif Araby, Zhandos Tauanov, Nursultan Turdakyn, Reza Montazami, Fethi Abbassi, Gulnur Kalimuldina   +6 more
wiley   +1 more source

AI‐Directed 3D Printing of Hierarchical Polyurethane Foams

Advanced Science, Volume 13, Issue 8, 9 February 2026.
Digitally guided direct ink writing, combined with AI‐generated design, enables the fabrication of hierarchical polyurethane foams with tunable multiscale porosity. This approach produces architected foams featuring interconnected open‐cell networks and tailored mechanical properties, advancing the development of adaptive, high‐performance materials ...
Dhanush Patil, Jie Tian, Kun Jiang, Clarissa Westover, Sri Vaishnavi Thummalapalli, Arunachalam Ramanathan, Arpita Shome, Natalie Crutchfield, M. Taylor Sobczak, Sean Lee, Hongyue Sun, Elizabeth J. Brisbois, Hitesh Handa, Timothy E. Long, Xianqiao Wang, Kenan Song   +15 more
wiley   +1 more source

Occupational exposure to selected isocyanates in Polish industry

Medycyna Pracy, 2015
Background: Isocyanates constitute a group of highly reactive, low molecular weight chemicals used worldwide for polyurethane manufacturing. The occupational exposure to these compounds is a major cause of occupational asthma, thus it is very important ...
Sławomir Brzeźnicki, Marzena Bonczarowska   +1 more
doaj   +1 more source

Synthesis of bio-based thermoplastic polyurethane elastomers containing isosorbide and polycarbonate diol and their biocompatible properties. [PDF]

, 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

In Situ Synthesized Glycerol‐Releasing Nanocarriers Unlock Superlubricity in Oil‐Based Lubricants

Macromolecular Materials and Engineering, Volume 311, Issue 2, February 2026.
This study presents an in situ synthesis of glycerol‐based nanocarriers in hydrophobic lubricant oils via inverse miniemulsion polymerization. Encapsulating glycerol within a glycerol‐based polyurethane shell resolves miscibility issues between glycerol and the hydrophobic base oil, yielding novel nanoadditives with tunable glycerol loading.
Sarah S. Lembke, Waraporn Wichaita, Beate Müller, Heloise Therien‐Aubin, Katharina Landfester   +4 more
wiley   +1 more source