Results 141 to 150 of about 17,097 (275)

Freeze‐resistant, conductive semi‐interpenetrating network hydrogels enable oxidative stress regulation and enhanced wound healing

Interdisciplinary Medicine, EarlyView.
A multifunctional SFMA9/PF1 semi‐interpenetrating hydrogel with excellent conductivity, antioxidant activity, and freeze resistance effectively regulates the wound microenvironment, reduces oxidative stress and inflammation, promotes angiogenesis, and accelerates full‐thickness skin regeneration.
Xiaomin Sun, Yanqin Yu, Xinyuan He, Kaiyi Tang, Lijing Teng, Tianbao Qian, Zhu Zeng, Zuquan Hu   +7 more
wiley   +1 more source

Development of Fibrillar Morphology in a Polypropylene Under Time‐Dependent Shear Flow

Macromolecular Materials and Engineering, EarlyView.
The effects of isothermal, non‐constant flow on morphology development in iPP are studied. Two tests, applying the same total work but with different time evolution of the shear rate, are considered. The pattern of shear flow, not just the intensity, influences morphology.
Vito Speranza, Sara Liparoti, Valentina Volpe, Roberto Pantani   +3 more
wiley   +1 more source

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

Macromolecular Materials and Engineering, EarlyView.
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

Is there a Relationship between the Elongational Viscosity and the First Normal Stress Difference in Polymer Solutions?

, 2009
We investigate a variety of different polymer solutions in shear and elongational flow. The shear flow is created in the cone-plate-geometry of a commercial rheometer.
Gier, S., Rafaï, S., Wagner, C., Zell, A.   +3 more
core   +1 more source

Catalyst‐Free Mass Polymerization and Characterization of Bio‐Polyhydroxhyurethanes Based on Resorcinol Bis(Cyclocarbonate)

Macromolecular Materials and Engineering, EarlyView.
Non‐isocyanate polyhydroxyurethanes (PHUs) were synthesized from resorcinol bis(cyclocarbonate) and eco‐friendly diamines under mild, catalyst‐free conditions. The resulting polymers were extensively characterized for their structural, thermal, and mechanical properties, as well as processability and adhesion performance.
Federico Olivieri, Noemi Faggio, Giovanni Dal Poggetto, Chiara Santillo, Roberto Avolio, Rachele Castaldo, Mariacristina Cocca, Maria Emanuela Errico, Marino Lavorgna, Gennaro Gentile   +9 more
wiley   +1 more source

Mechanical Reinforcement of Polymer Nanocomposites with Different Network Structure of Polymer Grafted Nanoparticles

Macromolecular Materials and Engineering, EarlyView.
Due to the different conformation structures of the grafting chains on the surface of silica, the nanoparticles contact each other by brush chains and bridge into a polymer‐mediated nanoparticle network in HDPE14K/HDPE1K‐g‐SiO2 PNCs, resulting in a more significant modulus reinforcement than that of PP370K/PP90K‐g‐SiO2 PNCs with a soft interfacial ...
Ye Yao, Shaofan Li, Weilong Ju, Yunlan Su, Dujin Wang   +4 more
wiley   +1 more source

Bio‐Based Epoxy Resins from Estragole: Achieving High Glass Transition Temperatures Comparable to DGEBA and Simultaneously Low Viscosities

Macromolecular Materials and Engineering, EarlyView.
Two novel bio‐based epoxy monomers, diglycidyl‐4‐allylphenol (DG‐4A) and triglycidyl‐diallylphenol (TG‐DA), derived from estragole (92% and 72% bio‐content), were synthesized and cured with isophorone diamin (IPDA) and 4,4´‐diaminodiphenyl sulfone (DDS). The resins show high Tgs, with DG‐4A reaching and TG‐DA exceeding DGEBA‐based systems. These resins
Florian Bauer, Elisabeth Schamel, Herbert Schlachter, Gerd Wehnert, Dominik Söthje   +4 more
wiley   +1 more source

FUNDAMENTAL CHARACTERISTIC OF INCLINED BLADES ROTATIONAL RHEOMETER

Journal of Structural and Construction Engineering (Transactions of AIJ), 2008
Hisashi YAMASAKI, Yoshinori KITSUTAKA, Noriyuki MITA   +2 more
openaire   +2 more sources

Latex Serum‐Derived Supramolecular Networks Enable Toughening of Natural Rubber

Macromolecular Rapid Communications, EarlyView.
Latex‐serum addition enhances strain‐induced crystallization (SIC) toughening in natural rubber, increasing tearing strength and extending the SIC activation window. Supramolecular networks form via bifurcated hydrogen bonding between polyol components (e.g., quebrachitol) and end‐functionalized polyisoprene chains, serving as effective crystallization
Katsuhiko Tsunoda, Mayank Dixit, Yasuhiro Shoda, Yuji Kitamura, Takashi Taniguchi, Kenji Urayama   +5 more
wiley   +1 more source

An Electrically-Recording Rotational Rheometer

An Electrically-Recording Rotational Rheometer
A coaxial cylindrical rheometer has been developed for measuring viscoelastic properties and flow properties of polymeric materials and of concentrated suspensions by oscillatory and/or stationary method. A feature of this apparatus is the completely automatic recording system which is achieved by means of the electric driving and detecting units.
openaire