Results 31 to 40 of about 12,858 (159)

Electrophoretic Studies of Nylon [PDF]

Textile Research, 1941
The surface electrical properties of "unoriented" and of highly "oriented" nylon fibers were investigated by a microelec trophoretic technique. Both types of fibers exhibited definite re versals of charge but at different pH values; the unoriented fiber at pH 3.9 and the oriented at pH 2.7. Since nylon consists of hydrocarbon chains linked together by
Arnold M. Sookne, Milton Harris
openaire   +2 more sources

Polyamide recycling by selective dissolution approach: Life Cycle Assessment study and environmental impacts comparison with different recycling technologies

Polymer Engineering &Science, Volume 65, Issue 2, Page 765-782, February 2025.
The study evaluates the industrial feasibility of the selective dissolution recycling of polyamide 6 (PA6) waste, comparing it with the current industrial recycling methods (mechanical and chemical), in terms of environmental impacts and applicability. Solvent‐based recycling appears promising, with a Global Warming Potential (GWP) between chemical and
Giulia Tonsi, Martina Caccia, Cristiano Maesani, Paolo Simon Ostan, Marco Aldo Ortenzi, Stefano Alini, Carlo Pirola   +6 more
wiley   +1 more source

Microplastic Materials for Inhalation Studies: Preparation by Solvent Precipitation and Comprehensive Characterization

Small, Volume 21, Issue 7, February 19, 2025.
How can one test the inhalation toxicity of microplastics, if sufficiently small particles are not available? Efficient conversion of PA, PET, TPU, and LDPE plastic granules into <4 µm particles up to kilogram‐scale batches is achieved. Molecular properties, particle properties, and properties that control their interaction upon inhalation, such as ...
Katherine Y. Santizo, Hannah S. Mangold, Zeynab Mirzaei, Hyoungwon Park, Rajkumar Reddy Kolan, George Sarau, Susanne Kolle, Tanja Hansen, Silke Christiansen, Wendel Wohlleben   +9 more
wiley   +1 more source

Organic Ferroelectrics for Regulation of Electronic and Ionic Transport Toward Neuromorphic Applications

Advanced Physics Research, Volume 4, Issue 1, January 2025.
Organic ferroelectrics (OFEs) offer great advantages such as mechanical flexibility, biocompatibility, and facile processibility. Incorporation of OFEs with electronic, ionic, or mixed ionic‐electronic conducting system can greatly extend their applicability, namely for neuromorphic devices.
Minsub Lee, Beomjin Jeong
wiley   +1 more source

Fluorierte Squareimine zur molekularen Trennung von aromatischen und aliphatischen Verbindungen

Angewandte Chemie, Volume 136, Issue 52, December 20, 2024.
Squareimine sind eine neue Klasse von elektronenarmen Makrocyclen mit einer einzigartigen rechteckigen Struktur, die durch die elektronenarmen Paneele spezifische Wechselwirkungen ermöglicht und eine selektive Trennung aromatischer Kohlenwasserstoffe von aliphatischen Gemischen unterstützt.
Tobias Pausch, Samanta Clopot, Dustin N. Jordan, Oliver Weingart, Christoph Janiak, Bernd M. Schmidt   +5 more
wiley   +1 more source

THE INTRINSIC BIREFRINGENCE OF NYLON-6 AND NYLON-66

Sen'i Gakkaishi, 1976
The intrinsic birefringence of Nylon-6 and Nylon-66 were calculated by using the three dimensional coordinates of bond-unit by Bunn et al.Birefringence is a measure of the total molecular orientation of a polymer. For a uniaxially oriented polymer the measured birefringence ΔT may be defined as Where Δ°am is the intrinsic birefringence of the perfectly
openaire   +3 more sources

A Study on single Crystals of Nylon 12 [PDF]

, 1967
Single crystals of two crystatalline forms, α and γ, in nylon 12 were obtained from dilute solutions. The single crystals of γ-form from diols solutions are ribbon like lamellae in shape, and that of α-form obtained from solution in water-formic acid are
Fujiwara, Yasuo, Monobe, Kazuo
core   +1 more source

A Homogeneous Nickel Catalyst for Reductive Amination of γ‐Keto Acids using Hydrogen

ChemCatChem, Volume 16, Issue 22, November 25, 2024.
Nickel in the presence of linear triphos allows smooth reductive amination of levulinic acid and 2‐acetylbenzoic acid using molecular hydrogen for over 20 different substrates. The kind of alcohol used as solvent tremendously impacts the performance of the system.
Soumyadeep Chakrabortty, Jan‐Ole Moritz, Fabian Kallmeier, Helfried Neumann, Sergey Tin, Matthias Beller, Johannes G. de Vries   +6 more
wiley   +1 more source

Advanced Materials for Energy Harvesting and Soft Robotics: Emerging Frontiers to Enhance Piezoelectric Performance and Functionality

Advanced Materials, Volume 36, Issue 45, November 7, 2024.
This review is focused on the chemical and physical strategies employed to enhance the piezoelectric response of advanced materials, and to address scale‐up and device integration challenges for complex systems and soft robotics. The working mechanisms and operation modes are highlighted for each material class, along with the application potential of ...
Luana Persano, Andrea Camposeo, Francesca Matino, Ruoxing Wang, Thiyagarajan Natarajan, Qinlan Li, Min Pan, Yewang Su, Sohini Kar‐Narayan, Ferdinando Auricchio, Giulia Scalet, Chris Bowen, Xudong Wang, Dario Pisignano   +13 more
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