Toughening of Nylon-6 by Semicrystalline Poly(vinylidene fluoride): Role of Phase Transformation and Fibrillation of Dispersed Particles

Na, Bing; Xu, Wenfei; Lv, Ruihua; Li, Zhujun; Tian, Na; Zou, Shufen

doi:10.1021/ma1002744

Cited by 49 publications

(38 citation statements)

References 30 publications

(60 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These plates were sized 30×4×1 mm 3 . The sample was tested on a Perkin Elmer dynamic mechanical analyzer.…”

Section: Dma Analysismentioning

confidence: 99%

“…Recently, polyamide6 (PA6) and poly(vinylidene fluoride) (PVDF) blends have attracted much attention [3][4][5][6][7][8][9][10][11][12][13]. The PA6/PVDF blends combine the good weathering resistance, chemical resistance and excellent barrier properties of PVDF and the good processability and mechanical properties of PA6.…”

Section: Introductionmentioning

confidence: 99%

“…It has been found that PA6 and PVDF have favorable molecular interactions compared to other immiscible polymer blends due to the interfacial hydrogen bonds and dipolar intermolecular interactions between PA6 and PVDF [6]. Because of these molecular interactions, PA6/PVDF blends with improved properties even without compatibilization have been studied in detail by some researchers [3][4][5][6]. Na et al reported that PA6/PVDF blends achieved superior toughness with semi-crystalline PVDF components as the dispersed particles.…”

Section: Introductionmentioning

confidence: 99%

“…Na et al reported that PA6/PVDF blends achieved superior toughness with semi-crystalline PVDF components as the dispersed particles. They concluded that the transformation from α to β phase and fibrillation of β-crystals of the dispersed PVDF particles were responsible for the toughness enhancement in the PA6/PVDF blend [3]. Song et al prepared PVDF/PA6 blends via the precipitation method.…”

Section: Introductionmentioning

confidence: 99%

“…From research on the PA6/PVDF simple blends, it could be found that the phase domain size of the dispersed phase was still big (0.5 2um) at some constitution such as 50/50, and the phase interface was obvious [3,11]. In order to change the interface and improve the miscibility of PA6/PVDF blends, researchers have attempted several methods of compatibilization.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Compatibilization effect of MMA-co-GMA copolymers on the properties of polyamide 6/Poly(vinylidene fluoride) blends

Song

et al. 2015

J Polym Res

View full text Add to dashboard Cite

Methyl methacrylate-co-glycidyl methacrylate copolymers (MMA-co-GMA) with different GMA contents were prepared to compatibilize the polyamide 6 (PA6) and poly(vinylidene fluoride) (PVDF) blend. The chemical reactions between the carboxyl/amino end groups of PA6 and the epoxy groups, and the good miscibility between PVDF and MMA-co-GMA were responsible for the excellent compatibilization effect. DMA results showed that the glass transition peaks of PVDF phase almost disappeared in the PA6/PVDF/MMA-co-GMA blends; this proved the suppressed thermal transition due to the restricted movement of PVDF chains. MMA-co-GMA copolymers significantly decreased the phase domain size of the PA6/PVDF blends. PVDF dispersed in the PA6 matrix uniformly and the interface between the two phases was obscure due to the compatibilization. The addition of MMA-co-GMA into the PA6/PVDF blend decreased the crystallization temperature of the PVDF phase, which proved that the compatibilizer enhanced the interaction between PVDF and PA6 and retarded the crystallization. Mechanical tests indicated that the impact strength and elongation at break of the PA6/PVDF blends increased with the addition of MMA-co-GMA. The increase of the fracture toughness was due to the compatibilization effect of MMA-co-GMA copolymers, which induced a delay of the debonding of PA6 and PVDF phases at the interface and inhibited the initiation and propagation of cracks.

show abstract

“…These plates were sized 30×4×1 mm 3 . The sample was tested on a Perkin Elmer dynamic mechanical analyzer.…”

Section: Dma Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Compatibilization effect of MMA-co-GMA copolymers on the properties of polyamide 6/Poly(vinylidene fluoride) blends

Song

et al. 2015

J Polym Res

View full text Add to dashboard Cite

show abstract

In Situ microscopic infrared imaging study on deformation‐induced spatial orientation and phase transition distributions of PA12

Chen

Zhang

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

The relationship of deformation-induced phase transition and orientation distributions of polyamide 12 in necking region is studied by in situ Fourier transformation infrared microspectroscopic imaging (FTIRI) under uniaxial tensile test. With the detection of an area of 250 3 250 lm 2 with 4096 Fourier transformation infraredspectra, the absorption distributions of crystal (1064 cm 21 band) and amorphous (1028 cm 21 band) phases with radiation polarized parallel and perpendicular to tensile direction are obtained, and the spatial orientation distributions in necking region as well as the yielding properties during necking propagation are analyzed. The results show that the crystal and amorphous are highly oriented and the spatial distributions are correlated with the necking propagation. The phase-transforming characteristics show that part of amorphous phase transforms to crystal phase and part of c phase transforms to transient a 00 phase in the necking region, which are also correlated with the necking propagation and drawing ratios. All these behaviors occur in the plastic deformation stage, which show a close correlation between the mechanical response and the structural evolution during uniaxial tensile deformation.

show abstract

Melt rheology and mechanical crystal transformation in an immiscible blend with poly(vinylidene fluoride) matrix

Zhu

Wang

et al. 2016

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Effect of immiscible polyamide 6 (PA6) on the melt rheology and stretch-induced crystal transformation of poly (vinylidene fluoride) (PVDF) matrix is reported. PA6 is dispersed as submicron droplets in the PVDF matrix, responsible for significant enhancement in the melt elasticity. Nevertheless, crystallization habits of PVDF matrix from melt are little affected by submicron PA6 droplets, and the a-form of PVDF prevails in the blends. Upon mechanical stretching, the a-form is converted to the b-form, which is remarkably reduced with the increasing of PA6 content in the blends. It could be correlated with the decreased tensile stress in the presence of submicron PA6 droplets that act as stress concentrators.

show abstract

Toughening of Nylon-6 by Semicrystalline Poly(vinylidene fluoride): Role of Phase Transformation and Fibrillation of Dispersed Particles

Cited by 49 publications

References 30 publications

Compatibilization effect of MMA-co-GMA copolymers on the properties of polyamide 6/Poly(vinylidene fluoride) blends

Compatibilization effect of MMA-co-GMA copolymers on the properties of polyamide 6/Poly(vinylidene fluoride) blends

In Situ microscopic infrared imaging study on deformation‐induced spatial orientation and phase transition distributions of PA12

Melt rheology and mechanical crystal transformation in an immiscible blend with poly(vinylidene fluoride) matrix

Contact Info

Product

Resources

About