Results 51 to 60 of about 118,555 (354)

Crystallization and Performance of Polyamide Blends Comprising Polyamide 4, Polyamide 6, and Their Copolymers

Polymers, 2023
Polyamide 4 (PA4) is a biobased and biodegradable polyamide. The high hydrogen bond density of PA4 bestows it with a high melting point that is close to its thermal decomposition temperature, thereby limiting the melt processing of PA4. In this study, PA4 was blended with polyamide 6 (PA6) and further modified with copolyamide 4/6 (R46). The effects of
Yajing Zhang, Mingda Wang, Di Zhang, Yibing Wang, Li Wang, Yongjun Qiu, Liquan Wang, Tao Chen, Liming Zhao   +8 more
openaire   +2 more sources

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

Nanocomposites of recycled and of virgin polyamide 6.6 with cellulose nanofibers

Hybrid Advances
The inherent properties of cellulose nanofibers (CNFs) make them an interesting and sustainable choice for reinforcing polymeric matrices intended for the automotive, electronic, construction, and packaging sectors.
Daiane Benaducci, Vinicius de Oliveira, William Tai Yin Tze, Islam Hafez, Marcia Cristina Branciforti   +4 more
doaj   +1 more source

Microwave Assisted Synthesis of Py-Im Polyamides [PDF]

, 2012
Microwave synthesis was utilized to rapidly build Py-Im polyamides in high yields and purity using Boc-protection chemistry on Kaiser oxime resin. A representative polyamide targeting the 5′-WGWWCW-3′ (W = A or T) subset of the consensus Androgen and ...
Bacsa B., Baird E. E., Bando T., Baptiste B., Chenoweth D. M., Chenoweth D. M., Chenoweth D. M., Choi J. S., Dale J. A., DeGrado W. F., Dervan P. B., Dervan P. B., Dose C., Edelson B. S., Farnham P. J., Harki D. A., Harris D., James W. Puckett, Joshua T. Green, Kappe C. O., Krutzik P. O., König B., Lai Y.-M., Murray J. K., Muzikar K. A., Nickols N. G., Olenyuk B. Z., Olivos H. J., Palasek S. A., Pelton J. G., Peter B. Dervan, Raskatov J. A., Sinyakov A. N., Su W., Turner J. M., Wade W. S., White S., Wurtz N. R., Xiao J. H.   +38 more
core   +2 more sources

Tailoring the Properties of Functional Materials With N‐Oxides

Advanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich, Michelle Kobus, Shirin Mesgarha, Erica Moretto, Laurens Grosche, Wolfgang Maison   +5 more
wiley   +1 more source

Evolution of dispersion of carbon nanotubes in Polyamide 11 matrix composites as determined by DC conductivity [PDF]

, 2012
Double-walled Carbon NanoTubes (DWCNTs) have been dispersed in a Polyamide 11 (PA11) matrix by two routes: in the solvent way, Polyamide 11 was first dissolved in its solvent to ensure a liquid state dispersion of carbon nanotubes by ultrasonic way; in ...
Aridon, Gwenaëlle, Cadiergues, Laurent, Carponcin, Delphine, Dantras, Eric, Lacabanne, Colette, Levallois, Franck   +5 more
core   +2 more sources

Novel Biobased Polyamide 410/Polyamide 6/CNT Nanocomposites [PDF]

Polymers, 2018
Biobased polyamide 410 (PA410)/multiwall carbon nanotube (CNT) nanocomposites (NCs) were obtained by melt-mixing in a twin screw extruder a Polyamide 6 (PA6)-based masterbatch (with 15 wt % CNT content) with neat PA410. Directly mixed PA410/CNT NCs were also obtained for comparison purposes.
Itziar Otaegi, Nora Aramburu, Alejandro J. Müller, Gonzalo Guerrica-Echevarría   +3 more
openaire   +3 more sources

Charge‐Induced Morphing Gels for Bioinspired Actuation

Advanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu, Saba Firouznia, Charl F. J. Faul, Majid Taghavi, Jonathan Rossiter   +4 more
wiley   +1 more source

Characterization of Defects by Non-Destructive Impulse Excitation Technique for 3D Printing FDM Polyamide Materials in Bending Mode

Applied Sciences
The presented article analyzes the impact of internal defects on the modal responses of polyamide parts subjected to bending. Samples with defects of various sizes (0, 3, 5, 7, and 10 mm) located at the neutral bending line were tested.
Fatima-Ezzahrae Jabri, Imi Ochana, François Ducobu, Rachid El Alaiji, Anthonin Demarbaix   +4 more
doaj   +1 more source

Polyamide‐6/Silica Nanocomposites [PDF]

Advanced Engineering Materials, 2004
New strategies were developed which incorporate silica nanoparticles (<30 nm) into a nylon‐6 matrix, to form technically interesting hybrid nanocomposites with improved stiffness. Silica particles retained their original shape and size (10–30 nm), are mono‐dispersed and mainly non‐agglomerated as shown by TEM. Mechanical tests on the composites were
Garcia, M, Garcia-Turiel, J, Norder, B, Chavez, F, Kooi, BJ, van Zyl, WE, Verweij, H, Blank, DHA, Blank, Dave H.A.   +8 more
openaire   +2 more sources