Results 91 to 100 of about 196,223 (392)

Tunable Structure and Properties of Segmented Thermoplastic Polyurethanes as a Function of Flexible Segment

Polymers, 2019
Segmented thermoplastic polyurethanes (PUs) were synthetized using macrodiols with different functional groups (carbonate, ester, and /or ether) as a segment with a molar mass of 1000 and 2000 g/mol, and 4,4’-diphenylmethane diisocyanate (MDI) and 1,4 ...
M. Asensio, V. Costa, A. Nohales, O. Bianchi, C. Gómez   +4 more
semanticscholar   +1 more source

A Bespoke Programmable Interpenetrating Elastomer Network Composite Laryngeal Stent for Expedited Paediatric Laryngotracheal Reconstruction

Advanced Functional Materials, EarlyView.
A programmable interpenetrating double‐network architecture, created via 3D‐TIPS printing and resin infusion, synergistically combines thermoplastic and thermosetting elastomers to balance structural rigidity and surface softness—crucial for paediatric laryngeal stents.
Elizabeth F. Maughan, Lei Wu, Dong Zhang, Linxiao Wu, Graca Ferreira Vaz Pinto Mendes, Wanqiao J. Tu, Heping Ma, Toby J. Proctor, Colin R. Butler, Thomas Kjærgaard, Mark W. Lowdell, Martin A. Birchall, Robert E. Hynds, Richard Hewitt, Wenhui Song   +14 more
wiley   +1 more source

Synthesis of bio-based building blocks from vegetable oils: a platform chemicals approach

Oléagineux, Corps gras, Lipides, 2013
This review reports the synthesis of various building blocks from vegetable oils in one or two-steps syntheses. Thiol-ene coupling allows to synthesize new biobased reactants with various function and functionality with reaction conditions in agreement ...
Desroches Myriam, Auvergne Rémi, Boutevin Bernard, Caillol Sylvain   +3 more
doaj   +1 more source

Pure polyurethane and castor oil based polyurethane: Synthesis and characterization

Journal of Mechanical Engineering and Sciences, 2015
In this study, the physico-chemical properties of high performance polyurethane synthesized from poly propylene glycol (PPG) in comparison with a combination of PPG and castor oil, is studied using the in-situ polymerization technique.
M.A. Alaa, Kamal Yusoh, S.F. Hasany
doaj   +1 more source

Fluorine containing polyurethane [PDF]

, 1969
A polyurethane polymer prepared by reacting a hydroxy-terminated polyformal with an organic diisocyanate is ...
Trischler, F. D.
core   +1 more source

Improved Lignin Polyurethane Properties with Lewis Acid Treatment [PDF]

, 2012
Chemical modification strategies to improve the mechanical properties of lignin-based polyurethanes are presented. We hypothesized that treatment of lignin with Lewis acids would increase the concentration of hydroxyl groups available to react with ...
Chung, Hoyong, Washburn, Newell R.
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

A review on polyurethane anti-fouling coatings

Corrosion Communications
In the development of marine industry, marine bio-fouling caused a significant impact on the economy and ecology. Thus, it is urgent to develop high-performance coatings with outstanding anti-fouling and biologically resistant properties.
Junwei Hu, Shu Tian, Ruiqi Li, Guangming Lu, Na Wang   +4 more
doaj   +1 more source

Device Integration Technology for Practical Flexible Electronics Systems

Advanced Functional Materials, EarlyView.
Flexible device integration technologies are essential for realizing practical flexible electronic systems. In this review paper, wiring and bonding techniques critical for the industrial‐scale manufacturing of wearable devices are emphasized based on flexible electronics.
Masahito Takakuwa, Kento Yamagishi, Sunghoon Lee, Yusaku Tagawa, Takao Someya, Tomoyuki Yokota   +5 more
wiley   +1 more source

Green polyurethanes from bio-based building blocks: Recent advances and applications

Green Synthesis and Catalysis
Polyurethanes (PUs) are among the most studied, manufactured, and employed polymers due to their versatility and wide range of applications. However, their synthesis generally relies on toxic, non-renewable, and harmful petroleum-based chemicals.
Filippo Campana, Giulia Brufani, Francesco Mauriello, Rafael Luque, Luigi Vaccaro   +4 more
doaj   +1 more source