Results 31 to 40 of about 2,853 (179)

Dispersion of nano-silica in monomer casting nylon6 and its effect on the structure and properties of composites

eXPRESS Polymer Letters, 2010
To promote dispersion of nano-silica in monomer casting nylon6 (MC nylon6), nano-silica was dispersed in melted caprolactam with the assistance of ultrasound, anionic polymerization was then initiated to form silica/MC nylon6 in-situ nanocomposites.
doaj   +1 more source

Development of Cost‐Effective and Highly Transparent Melamine Formaldehyde Resin Modified With Sodium Chloride for Enhancing Glossiness and Abrasion Resistance of Melamine Impregnated Paper

Polymer Engineering &Science, EarlyView.
An eco‐friendly melamine‐formaldehyde was produced by the addition of sodium chloride as a modifier. Modified MF resin improved surface gloss and abrasion resistance of decorative paper and decreased the formaldehyde emission. Curing time of the MF resin decreased with the addition of sodium chloride.
Saeed Kamrani, Antonio Pizzi, Peyman Ahmadi, Nadir Ayrilmis, Ali Dorieh, Adam Sikora, Štěpán Hýsek, Kateřina Hájková, Meysam Mehdinia   +8 more
wiley   +1 more source

Die kationische Caprolactam-Polymerisation

CHIMIA, 1974
The lactam polymerizations initiated by proton acids, Lewis acids, and ammonium salts, resp., as well as the hydrolytic polymerization are summarized as “cationic polymerizations”.
M. Rothe, G. Bertalan, J. Mazánek
doaj   +1 more source

Obtaining cyclopentanone from acidic wastewater of caprolactam production

Chimica Techno Acta, 2020
It has been shown that adipic acid released from the by-products of caprolactam production is a promising raw material for the production of cyclopentanone.
I. V. Tsvetkova, A. A. Golovanov, N. S. Reznikova, N. V. Chirkunova   +3 more
doaj   +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

Cationic Ring Opening polymerization of ε-caprolactam by a Montmorillonite Clay Catalyst

Bulletin of Chemical Reaction Engineering & Catalysis, 2014
The ring opening bulk polymerization of ε-caprolactam catalyzed by Maghnite-H+ was reported. Maghnite-H+ is a montmorillonite silicate sheet clay was prepared through a straight forward proton exchange process.
Djamal Eddine Kherroub, Mohammed Belbachir, Saad Lamouri   +2 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

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

Feedstock recycling of single-use garment simultaneously using CO2 and MSW incinerator bottom ash

Journal of CO2 Utilization
This study is aimed at proposing a feedstock recycling approach to make value-added monomer from single-use garment like stocking waste (SW) using incinerator bottom ash catalyst (IBAC).
Doeun Choi, Jechan Lee
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