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Crystal form and phase structure of poly(vinylidene fluoride)/polyamide 11/clay nanocomposites by high-shear processing.
J Nanosci Nanotechnol. 2008 Apr; 8(4):1714-20.JN

Abstract

Polyamide 11 (PA11)/clay, Poly(vinylidene fluoride) (PVDF)/clay and PVDF/PA11/clay nanocomposites were prepared by melt processing using a high shear extruder. Two types of organoclay with different modified alkyl tails and different polarities were used for PA11 and PVDF nanocomposites. PA11 nanocomposites derived from an organoclay having one alkyl tail show a well-exfoliated morphology but no crystal form transformation, whereas those derived from an organoclay having two alkyl tails give a little worse clay dispersion with the clear alpha to gamma crystal form transition with the addition of the clay. In contrast, the PVDF composites derived from the two organoclays result in a poor dispersion. In addition, PVDF/PA11 blend nanocomposites with a novel morphology have been fabricated using the high-shear extruder. It was found that the clay platelets were selectively dispersed in the PA11 phase with the size of larger than 200 nm, while no clay platelets were located in the PVDF phase and in the PA11 nanodomains with the size of smaller than 200 nm. Moreover, the addition of organoclay shows significant effects on the phase structure of PVDF/PA11 blends.

Authors+Show Affiliations

Li Y
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
Iwakura Y
No affiliation info available
Shimizu H
No affiliation info available

MeSH

Aluminum SilicatesClayComputer SimulationCrystallizationMacromolecular SubstancesMaterials TestingModels, ChemicalMolecular ConformationNanostructuresNanotechnologyNylonsParticle SizePhase TransitionPolyvinylsShear StrengthSurface Properties

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18572569

Citation

Li, Yongjin, et al. "Crystal Form and Phase Structure of Poly(vinylidene Fluoride)/polyamide 11/clay Nanocomposites By High-shear Processing." Journal of Nanoscience and Nanotechnology, vol. 8, no. 4, 2008, pp. 1714-20.
Li Y, Iwakura Y, Shimizu H. Crystal form and phase structure of poly(vinylidene fluoride)/polyamide 11/clay nanocomposites by high-shear processing. J Nanosci Nanotechnol. 2008;8(4):1714-20.
Li, Y., Iwakura, Y., & Shimizu, H. (2008). Crystal form and phase structure of poly(vinylidene fluoride)/polyamide 11/clay nanocomposites by high-shear processing. Journal of Nanoscience and Nanotechnology, 8(4), 1714-20.
Li Y, Iwakura Y, Shimizu H. Crystal Form and Phase Structure of Poly(vinylidene Fluoride)/polyamide 11/clay Nanocomposites By High-shear Processing. J Nanosci Nanotechnol. 2008;8(4):1714-20. PubMed PMID: 18572569.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Crystal form and phase structure of poly(vinylidene fluoride)/polyamide 11/clay nanocomposites by high-shear processing. AU - Li,Yongjin, AU - Iwakura,Yuko, AU - Shimizu,Hiroshi, PY - 2008/6/25/pubmed PY - 2008/7/23/medline PY - 2008/6/25/entrez SP - 1714 EP - 20 JF - Journal of nanoscience and nanotechnology JO - J Nanosci Nanotechnol VL - 8 IS - 4 N2 - Polyamide 11 (PA11)/clay, Poly(vinylidene fluoride) (PVDF)/clay and PVDF/PA11/clay nanocomposites were prepared by melt processing using a high shear extruder. Two types of organoclay with different modified alkyl tails and different polarities were used for PA11 and PVDF nanocomposites. PA11 nanocomposites derived from an organoclay having one alkyl tail show a well-exfoliated morphology but no crystal form transformation, whereas those derived from an organoclay having two alkyl tails give a little worse clay dispersion with the clear alpha to gamma crystal form transition with the addition of the clay. In contrast, the PVDF composites derived from the two organoclays result in a poor dispersion. In addition, PVDF/PA11 blend nanocomposites with a novel morphology have been fabricated using the high-shear extruder. It was found that the clay platelets were selectively dispersed in the PA11 phase with the size of larger than 200 nm, while no clay platelets were located in the PVDF phase and in the PA11 nanodomains with the size of smaller than 200 nm. Moreover, the addition of organoclay shows significant effects on the phase structure of PVDF/PA11 blends. SN - 1533-4880 UR - https://www.unboundmedicine.com/medline/citation/18572569/Crystal_form_and_phase_structure_of_poly_vinylidene_fluoride_/polyamide_11/clay_nanocomposites_by_high_shear_processing_ DB - PRIME DP - Unbound Medicine ER -