Physical evaluation of explanted vascular prostheses

W. Chaouch; F. Khoffi; F. Dieval; N. Chakfe; B. Durand

doi:10.1080/00914037.2014.886249

Physical evaluation of explanted vascular prostheses

W. Chaouch, F. Khoffi, F. Dieval, N. Chakfe, B. Durand

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1 Scopus citations

Abstract

The authors attempt to describe a comprehensive study of physical ageing in vivo on the properties of explanted prostheses. Infrared spectroscopy (FTIR) technique has been used to compare the molecular conformation of various polyethylene terephthalate (PET) yarns extracted from the different areas of the prostheses (with different lifetimes) collected after ageing. The FTIR found results showed an increased PET crystallinity related to the development of microcrystallites in the amorphous areas of PET chains. Nevertheless, these small crystallites are not perfectly orientated according to the fiber axis. In addition, we can deduced that the ruptures in macromolecular chain can occur in the diethylene glycol groups existing in the zones amorphous and can be induced the crystallization process.

Original language	English (US)
Pages (from-to)	169-174
Number of pages	6
Journal	International Journal of Polymeric Materials and Polymeric Biomaterials
Volume	64
Issue number	4
DOIs	https://doi.org/10.1080/00914037.2014.886249
State	Published - Aug 31 2015

Keywords

Crystallization process
infrared spectroscopy
microcrystallites
physical degradation
vascular grafts

ASJC Scopus subject areas

Analytical Chemistry
Chemical Engineering(all)
Polymers and Plastics

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10.1080/00914037.2014.886249

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abstract = "The authors attempt to describe a comprehensive study of physical ageing in vivo on the properties of explanted prostheses. Infrared spectroscopy (FTIR) technique has been used to compare the molecular conformation of various polyethylene terephthalate (PET) yarns extracted from the different areas of the prostheses (with different lifetimes) collected after ageing. The FTIR found results showed an increased PET crystallinity related to the development of microcrystallites in the amorphous areas of PET chains. Nevertheless, these small crystallites are not perfectly orientated according to the fiber axis. In addition, we can deduced that the ruptures in macromolecular chain can occur in the diethylene glycol groups existing in the zones amorphous and can be induced the crystallization process.",

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AU - Chaouch, W.

AU - Khoffi, F.

AU - Dieval, F.

AU - Chakfe, N.

AU - Durand, B.

PY - 2015/8/31

Y1 - 2015/8/31

N2 - The authors attempt to describe a comprehensive study of physical ageing in vivo on the properties of explanted prostheses. Infrared spectroscopy (FTIR) technique has been used to compare the molecular conformation of various polyethylene terephthalate (PET) yarns extracted from the different areas of the prostheses (with different lifetimes) collected after ageing. The FTIR found results showed an increased PET crystallinity related to the development of microcrystallites in the amorphous areas of PET chains. Nevertheless, these small crystallites are not perfectly orientated according to the fiber axis. In addition, we can deduced that the ruptures in macromolecular chain can occur in the diethylene glycol groups existing in the zones amorphous and can be induced the crystallization process.

AB - The authors attempt to describe a comprehensive study of physical ageing in vivo on the properties of explanted prostheses. Infrared spectroscopy (FTIR) technique has been used to compare the molecular conformation of various polyethylene terephthalate (PET) yarns extracted from the different areas of the prostheses (with different lifetimes) collected after ageing. The FTIR found results showed an increased PET crystallinity related to the development of microcrystallites in the amorphous areas of PET chains. Nevertheless, these small crystallites are not perfectly orientated according to the fiber axis. In addition, we can deduced that the ruptures in macromolecular chain can occur in the diethylene glycol groups existing in the zones amorphous and can be induced the crystallization process.

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Physical evaluation of explanted vascular prostheses

Abstract

Keywords

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