In Situ Polymerisation of Polyamide‐6 Nanocompounds from Caprolactam and Layered Silicates

Rothe, Bernd; Elas, Athanassios; Michaeli, Walter

doi:10.1002/mame.200800244

Cited by 9 publications

(2 citation statements)

References 17 publications

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“…Namely, recent approaches in reactive extrusion processes have evidenced that the in situ continuous anionic polymerization of CL, for example, in twin‐screw extruders, is suitable for the preparation of nanocomposites and nanoblends . Another process of rather new industrial interest is based on CL reactive vacuum infusion in the production of glass fiber (GF)‐reinforced APA 6 for manufacturing wind turbine blades .…”

Section: Introductionmentioning

confidence: 99%

Fast-activated anionic polymerization of ε-caprolactam in the bulk under quasi-adiabatic conditions: Comparison of different kinetic models

Russo

Maniscalco²,

Moretti³

et al. 2013

J. Polym. Sci. Part A: Polym. Chem.

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The kinetics of e-caprolactam fast-activated anionic polymerization in the bulk under quasi-adiabatic conditions is analyzed in terms of three semiempirical schemes. Malkin's model, the most frequently quoted approach in the literature, provides an excellent simulation of the polymerization kinetics in our experimental conditions, but the values of the derived parameters do not remain constant, as predicted by the model when different experimental conditions are chosen, and do not allow any correlation with the physical and chemical aspects of the reaction. The same limit exists for Lin's model, with a poorer agreement between simulation and experimental data. Only Kamal-Sourour's model provides almost constant values of the parameters present in the equation and can be considered a valid approach for the description of the whole course of the reaction in our experimental conditions. The relevance of the auto acceleration step is compared for two very fast activators and related to the most accredited interpretation of its occurrence. V C 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 4474-4480

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Section: Introductionmentioning

confidence: 99%

Fast-activated anionic polymerization of ε-caprolactam in the bulk under quasi-adiabatic conditions: Comparison of different kinetic models

Russo

Maniscalco²,

Moretti³

et al. 2013

J. Polym. Sci. Part A: Polym. Chem.

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show abstract

“…As an example for continuous preparation of PA6/clay nanocomposites and as an alternative to melt compounding, Rothe et al17 published about reactive extrusion. CL was polymerized by AROP in the presence of an OMMT.…”

Section: Introductionmentioning

confidence: 99%

Monomer cast polyamide 6 composites and their treatment with high‐energy electrons

Engelmann

Gohs

Ganster

2011

J of Applied Polymer Sci

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At first, the impact of selected spherically structured nanofillers made of different polar materials (carbon, silicon carbide, surface-modified silica, 2 wt % each) on mechanical properties of monomer cast polyamide 6 (MCPA6) was examined. Only the low-polar carbon-based nanofiller showed an average particle size below 100 nm in the liquid phase before polymerization was initiated. With regard to neat MCPA6, mechanical properties of the composite loaded with the carbon nanoparticles like tensile strength, Young's modulus, and heat distortion temperature could be improved by 6.4%, 13.5%, and 27.5%, respectively. The efficiency of carbon as filler material for MCPA6 was also shown for carbon short-cut fibers. A fiber content of 15% improved tensile strength from 78 to 93 MPa (19%) and Young's modulus could be doubled from 2660 MPa to nearly 5300 MPa. Regardless of the improved mechanical properties, the composites showed reduced degrees of crystallinity. Therefore, elect ron beam irradiation was applied to crosslink the polymer chains as an alternative to improve material properties. Crosslinking was supported by the application of a curing agent (CA). Two strategies for crosslinking experiments were tested: (1) Irradiation of CA-containing neat MCPA6 to find the most effective dose and subsequent treatment of the composites under this special condition; (2) Optimization of the properties by irradiation of the composites itself at graduated dose values. The second way was more convenient and showed, with regard to the composites without CA, improvements of tensile strength and Young's modulus of 6% each

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Polyamide Nanocomposites by In‐situ Polymerization

Boussia

Vouyiouka

Papaspyrides

2011

In‐Situ Synthesis of Polymer Nanocomposites

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In Situ Polymerisation of Polyamide‐6 Nanocompounds from Caprolactam and Layered Silicates

Cited by 9 publications

References 17 publications

Fast-activated anionic polymerization of ε-caprolactam in the bulk under quasi-adiabatic conditions: Comparison of different kinetic models

Fast-activated anionic polymerization of ε-caprolactam in the bulk under quasi-adiabatic conditions: Comparison of different kinetic models

Monomer cast polyamide 6 composites and their treatment with high‐energy electrons

Polyamide Nanocomposites by In‐situ Polymerization

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