Thermo-mechanical behaviour of Polyamide 6 chain extended with 1,1′-Carbonyl-Bis-Caprolactam and 1,3-Phenylene-Bis-2-Oxazoline

Buccella, Mauro; Dorigato, Andrea; Caldara, Mauro; Pasqualini, E.; Fambri, Luca

doi:10.1007/s10965-013-0225-2

Cited by 19 publications

(11 citation statements)

References 17 publications

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“…Neat PA6, after 23 min at elevated temperature, exhibits a slight increase in apparent viscosity, because of post-condensation reaction that occurs inside the rheometer. [27][28][29] During the thermal processing, amino and carboxylic end groups react with each other forming peptide groups and water, thus increasing the molecular weight of the polymer matrix and the apparent viscosity values. The presence of the green phthalocyanine pigment into the polyamide matrix markedly increases the apparent viscosity of the system in the whole shear rate interval.…”

Section: Resultsmentioning

confidence: 99%

Influence of the Processing Parameters on the Dispersion and Coloration Behavior of a Halogenated Copper Phthalocyanine‐Based Masterbatch

Buccella

Dorigato

Rizzola³

et al. 2016

Adv Polym Technol

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A monodispersed green masterbatch was produced through an industrial extrusion process, by mixing a commercial Polyamide 6 matrix (PA6) with a halogenated copper phthalocyanine green pigment. The production process was investigated and optimized in order to improve the pigment dispersion, reducing the clogging power and increasing the color strength of the resulting products. The compounding process based on three extrusions without filtration led to a filter pressure value (FPV) reduction of about 84% and a relative color strength (RCS) increase of about 50% with respect to the standard production process (i.e single extrusion). The thermal stability of the prepared compounds was evaluated by rheological test, viscosity measurements, and end group analysis, and it was found that a triple extrusion without filtration promoted thermo-oxidative matrix degradation. However, the same processing conditions led to a significant reduction of the production waste, increasing the productivity and the quality of the final product.

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Section: Resultsmentioning

confidence: 99%

Influence of the Processing Parameters on the Dispersion and Coloration Behavior of a Halogenated Copper Phthalocyanine‐Based Masterbatch

Buccella

Dorigato

Rizzola³

et al. 2016

Adv Polym Technol

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“…But in that case there is no progress on the stiffness and strength of PA6 material with G-POSS and CBC without SGF. Additionally, the effect of CBC on the crystallinity of PA6 shows itself as decrease rather than increase (Table 1) [26]. Thus, enhancement of stiffness and strength of PA6 composites could be associated to the interaction between matrix and reinforcement material through the presence of CBC and G-POSS [7].…”

Section: Tensile Propertiesmentioning

confidence: 97%

“…[23,24]. CBC, as a chain extender, is also an attractive, relatively new, modifying agent on the mechanical properties of thermoplastic matrixes due to limited number of studies have been published in literature yet [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Effect of POSS and chain extender on tensile and fracture properties of neat and short glass fiber reinforced polyamide 6 composites

Yilmaz

Yılmaz

2014

Composites Part A: Applied Science and Manufacturing

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“…To solve the problems above, chain extenders have been developed and have proven to be an effective additive for suppressing this mechanical deterioration [27,28]. Epoxide and oxazoline type chain extenders have been revealed to have high reactivity with amino and carboxyl end-groups of polyamide, which increases the molecular weight and mechanical properties of polymers [29,30,31,32].…”

Section: Introductionmentioning

confidence: 99%

Chain Extension and Synergistic Flame-Retardant Effect of Aromatic Schiff Base Diepoxide on Polyamide 6/Aluminum Diethylphosphinate Composites

et al. 2019

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A way to suppress the deterioration in mechanical properties of polyamide 6 (PA6) is required, especially with high loading of flame retardants in the matrix. In this study, a novel aromatic Schiff base diepoxide (DES) was synthesized. It exhibited an efficient chain extension effect on PA6 and a synergistic flame-retardant effect with aluminum diethylphosphinate (AlPi) for PA6. The PA6 composite with 16 wt.% AlPi only passed UL-94 V-0 rating at 1.6 mm thickness, while the combination of 1.5 wt.% DES with 13 wt.% AlPi induced PA6 to achieve a UL-94 V-0 rating at 0.8 mm thickness. The tensile, flexural, and Izod notched impact strengths were increased by 16.2%, 16.5%, and 24.9%, respectively, compared with those of V-0 flame-retarded PA6 composites with 16 wt.% AlPi. The flame-retarded mechanism of PA6/AlPi/DES was investigated by cone calorimetry and infrared characterization of the char residues and pyrolysis products. These results showed that DES had a synergistic effect with AlPi in condensed-phase flame retardation by promoting the production of aluminum phosphorus oxides and polyphosphates in the char residues.

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Thermo-mechanical behaviour of Polyamide 6 chain extended with 1,1′-Carbonyl-Bis-Caprolactam and 1,3-Phenylene-Bis-2-Oxazoline

Cited by 19 publications

References 17 publications

Influence of the Processing Parameters on the Dispersion and Coloration Behavior of a Halogenated Copper Phthalocyanine‐Based Masterbatch

Influence of the Processing Parameters on the Dispersion and Coloration Behavior of a Halogenated Copper Phthalocyanine‐Based Masterbatch

Effect of POSS and chain extender on tensile and fracture properties of neat and short glass fiber reinforced polyamide 6 composites

Chain Extension and Synergistic Flame-Retardant Effect of Aromatic Schiff Base Diepoxide on Polyamide 6/Aluminum Diethylphosphinate Composites

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