Results 21 to 30 of about 705 (111)

Biodegradation of polyamide 6 by Lysinibacillus sp, Alcaligene faecalis and Enterococcus faecalis

Cleaner Chemical Engineering, 2022
Polyamide 6 (PA6, polycaprolactam, Nylon 6) is a thermoplastic polymer widely used in construction, automotive, packaging, etc. It is a semi-crystalline polymer known for its good mechanical properties, and chemical, and thermal stability, with a low ...
Oumayma Oulidi, Asmae Nakkabi, Aziz Bouymajane, Ibtissam Elaraaj, Fouzia Rhazi Filali, Mohammed Fahim, Noureddine El Moualij   +6 more
doaj   +1 more source

Influence of cyclodextrin on the UCST- and LCST-behavior of poly(2-methacrylamido-caprolactam)-co-(N,N-dimethylacrylamide)

Beilstein Journal of Organic Chemistry, 2014
The monomer 2-methacrylamido-caprolactam (4) was synthesized from methacryloyl chloride (3) and racemic α-amino-ε-caprolactam (2). Copolymerization of 4 with N,N-dimethylacrylamide (5) was carried out by a free-radical mechanism using 2,2’-azobis(2 ...
Alexander Burkhart, Helmut Ritter
doaj   +1 more source

N,N'-(Hexane-1,6-diyl)bis(4-methyl-N-(oxiran-2-ylmethyl)benzenesulfonamide): Synthesis via cyclodextrin mediated N-alkylation in aqueous solution and further Prilezhaev epoxidation

Beilstein Journal of Organic Chemistry, 2013
N-alkylation of N,N'-(hexane-1,6-diyl)bis(4-methylbenzenesulfonamide) with allyl bromide and subsequent Prilezhaev reaction with m-chloroperbenzoic acid to give N,N'-(hexane-1,6-diyl)bis(4-methyl-N-(oxiran-2-ylmethyl)benzenesulfonamide) is described ...
Julian Fischer, Simon Millan, Helmut Ritter   +2 more
doaj   +1 more source

Estimativa da incerteza de medição: estudo de caso no ensaio de migração de ε-caprolactama com determinação por CG-DIC

Química Nova, 2012
The estimation of measurement uncertainty of an analytical result is an important tool to be applied for compliance to ISO IEC 17025. Through the available guides it is possible to establish procedures and criteria for the estimation of measurement ...
Fabio Silvestre Bazilio, Marcus Vinícius Justo Bomfim, Rodrigo Justo de Almeida, Shirley de Mello Pereira Abrantes   +3 more
doaj   +1 more source

Nonwoven rCF/PA6 Thermoplastic Composites: Hybrid Commingled Fibers vs. Powder Impregnation—Effects on Microstructure and Mechanical Properties

Polymer Composites, EarlyView.
Comparison of powder impregnation and hybrid commingled non‐wovens for PA6/rCF nonwoven composites. The two‐step powder route gives lower voids and higher properties, while the single‐step hybrid route is limited by precursor inhomogeneity and high void content.
Gaia Francesca Lupia, Tommaso Pini, Ilaria Rossitti, Sara Taherinezhad Tayebi, Marco Valente   +4 more
wiley   +1 more source

Statistical evaluation of nylon chemical recycling through acidolysis

Polymer International, EarlyView.
Sustainable PA6 recycling through acidolysis enabled temperature‐driven depolymerization, modeled by regression analysis. Recycled products successfully replaced up to 30% monomer while preserving PA6 chemical composition or crystalline structure. Abstract This study focuses on the sustainability of plastics reporting the recycling of polyamide (PA ...
Diego Penzo, Bruno Godinho, Gabriele Rossignolo, Michele Modesti, Artur Ferreira, Alessandra Lorenzetti, Ana Barros‐Timmons, Nuno Gama   +7 more
wiley   +1 more source

Intrinsically Flame‐Retardant Polyamide 6 by Anionic Ring‐Opening Copolymerization with a Phosphorous‐Containing Comonomer

Macromolecular Materials and Engineering
A three‐step synthetic route is established for the synthesis of a phosphorus‐containing ε‐caprolactam derivative, starting from cyclohex‐2‐enone and diphenylphosphinous chloride, followed by a Beckmann rearrangement. 2D NMR spectroscopy reveals that the
Carlo Pani, Hagen J. Altmann, Patrick Probst, Iris Elser, Mark Steinmann, Simon König, Philipp Kreis, Lisa Kuske, Dominik Weidich, Anke Gähr, Jonas Groos, Julian Kappler, Janis Musso, Dongren Wang, Michael R. Buchmeiser   +14 more
doaj   +1 more source

Reactive microencapsulation of carbon allotropes in polyamide shell-core structures and their transformation in hybrid composites with tailored electrical properties

eXPRESS Polymer Letters, 2016
Polyamide 6 microcapsules (PAMC) loaded with 2–10 wt% of different carbon allotropes: carbon black, multiwalled carbon nanotubes, carbon nanofibers and graphite were synthesized via activated anionic polymerization (AAROP) of ε-caprolactam in solution ...
F. Oliveira, N. Dencheva, P. Martins, S. Lanceros-Mendez, Z. Denchev   +4 more
doaj   +1 more source

The plasticisation model of dye diffusion: Part 7

Coloration Technology, EarlyView.
Abstract Re‐evaluation using the Williams‐Landel‐Ferry equation, of exhaustion/fixation/adsorption data previously reported for four classes of anionic dye onto three different types of wool substrate, revealed that thermally activated dyeing/desorption behaviour is governed by the thermally regulated structural relaxation times of the respective water‐
Stephen M. Burkinshaw
wiley   +1 more source

2,3,5,6-Tetrafluoro-[N-(3-aminopropyl)-ε-caprolactam]-4-pyridine

Molbank
The title compound was synthesized at a near-quantitative yield using the nucleophilic aromatic substitution of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with perfluoropyridine (PFP). The purity and structure were determined by NMR (1H, 13C, 19F), GC-EIMS,
Chadron M. Friesen, Nathan J. Weeks, Scott T. Iacono   +2 more
doaj   +1 more source