Results 111 to 120 of about 3,337 (294)

Role of Periodicity and Acid Chemistry on the Morphological Evolution and Strength in Precise Polyethylenes

, 2016
We report the morphology evolution under tensile deformation for strictly linear polyethylenes with associating functional groups. In situ X-ray scattering measurements during elongation reveal that periodic acid group placement along the backbone is ...
Karen I. Winey (1532203), Kenneth B. Wagener (559243), Travis W. Baughman (2192908), L. Robert Middleton (1588519), Kathleen L. Opper (1650391), Eric Schwartz (3225420), Edward B. Trigg (3225423)   +6 more
core   +1 more source

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

Advanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk, Lukas Benecke, Chokri Cherif, Johannes Mersch   +3 more
wiley   +1 more source

A Trinuclear Pd−Diimine Catalyst for “Core-First” Synthesis of Three-Arm Star Polyethylenes via Ethylene “Living” Polymerization

, 2016
A Trinuclear Pd−Diimine Catalyst for “Core-First” Synthesis of Three-Arm Star Polyethylenes via Ethylene “Living ...
Zhibin Ye (795369), Ramesh Subramanian (650479), Kejian Zhang (2381038)   +2 more
core   +1 more source

Surprising Water Slipping Performance on Highly Hydrophilic PEG‐Derived Monolayer‐Covered Surfaces: Preparation, Mechanism, and Application

Advanced Functional Materials, EarlyView.
Highly hydrophilic surfaces (water contact angle, ≈17.7°) exhibiting surprising water slipping performance (sliding angle, ≈7.3°) are successfully prepared via simple chemisorption of polyethylene glycol (PEG) organosilane and subsequent alkali‐treatment.
Hyeonjin Kim, Kouki Akaike, Jerred Wassgren, Hiroshi Kakiuchida, Masahisa Okada, Atsushi Hozumi   +5 more
wiley   +1 more source

Decomposition of oxo-biodegradable polyethylenes by a combination of oxidation and biodegradation

e-Polymers
The ambiguity of the effect of applying pro-oxidant additives to polyolefins aroused interest in its actual biodegradability. A sample of a commercial package with pro-oxidant additive, a sample of pure low-density polyethylene (LDPE) and a sample of ...
Mastalygina Elena Evgenyevna, Pantyukhov Petr Vasilievich, Ovchinnikov Vasily Andreevich, Poletto Matheus, Popov Anatoly Anatolievich   +4 more
doaj   +1 more source

Functionalization of LDPE and mLLDPE via grafting trans-ethylene-1,2-dicarboxylic acid by reactive extrusion

eXPRESS Polymer Letters, 2010
An investigation was made of grafting trans-ethylene-1,2-dicarboxylic acid (TEDA) onto metallocene-linear low-density polyethylene (mLLDPE) and low-density polyethylene (LDPE) in the course of reactive extrusion.
doaj   +1 more source

Double‐Interpenetrating Composite Bioink for Multi‐Component 3D Bioprinting and Biofabrication

Advanced Functional Materials, EarlyView.
Marine‐polysaccharides‐derived double interpenetrating network hydrogel‐based bioink, combining the attributes of physical and ionic crosslinking, enables room‐temperature bioprinting of mechanically defined structures that can be handled and are cytocompatible.
Fabian Tribukait‐Riemenschneider, V. Prasad Shastri   +1 more
wiley   +1 more source

Coagulative Granular Hydrogels with an Enzyme Catalyzed Fibrin Network for Endogenous Tissue Regeneration

Advanced Healthcare Materials, EarlyView.
Coagulative granular hydrogels are composed of packed thrombin‐functionalized microgels that catalyze the conversion of fibrinogen into a secondary fibrin network, filling the interstitial voids. This bio‐inspired approach stabilizes the biomaterial to match the robustness of bulk hydrogels without compromising injectability, mimicking the initial ...
Zhipeng Deng, Camila B. Tovani, Simona Bianco, Gianni Comandini, Aya Elghajiji, Mina Aleemardani, Roxana Moscalu, Jeremie Zappia, Bianca Fernandes, Olivia Annett, Chrissy L. Hammond, Jason Wong, Dave J. Adams, Fabrizio Scarpa, Michael R. Whitehouse, Annela M. Seddon, James P. K. Armstrong   +16 more
wiley   +1 more source

Effect of pressure on the rheological properties of three polyethylenes

, 2001
The effect of pressure on the viscosity of polyethylenes was studied using a newly developed high-pressure, sliding-plate rheometer. The rheometer subjects the sample to a homogeneous pressure and temperature at levels up to 70 MPa and 225°C.
Park, Hee Eon, 1972-
core  

Translational Considerations for Injectable Biomaterials and Bioscaffolds to Repair and Regenerate Brain Tissue

Advanced Healthcare Materials, EarlyView.
The repair and regeneration of brain tissue faces both biological and technical challenges. Injectable bioscaffolds offer new opportunities to stimulate tissue regrowth in the brain by recruiting neural stem cells. Here, the translational issues are reviewed that need to be address to advance this promising new therapeutic approach from the bench to ...
Michel Modo, Alena Kisel
wiley   +1 more source