Confocal Raman microscopy of supercritical fluid dyeing of polymers

SG Kazarian; KLA Chan

doi:10.1039/b304056a

Confocal Raman microscopy of supercritical fluid dyeing of polymers

SG Kazarian^*, KLA Chan

^*Corresponding author for this work

Institute of Pharmaceutical Science

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Supercritical CO2 was used as a medium to introduce azo-dyes into polymers ( PMMA and PET). Confocal Raman microscopy has been applied using dry metallurgical and oil objectives to measure the concentration of dye as a function of distance from the surface to the core of the polymer samples. A significant gradient of dye concentration normal to the surface, down to the depth of ca. 100 mum, has been observed. In addition, cross-sections of cut dyed polymer samples have been analysed using a conventional mapping approach. The comparison between confocal depth and conventional mapping approaches has demonstrated that the use of the oil objective can provide reliable qualitative information on dye distribution in these systems. These confocal Raman experiments demonstrate the potential of this method in applications to polymeric materials processed with supercritical fluids.

Original language	English
Pages (from-to)	499-503
Number of pages	5
Journal	Analyst
Volume	128
Issue number	5
DOIs	https://doi.org/10.1039/b304056a
Publication status	Published - 2003

Keywords

CARBON-DIOXIDE
DEPTH RESOLUTION
SPECTROSCOPY
FILMS
CO2
MICROSPECTROSCOPY
PLASTICIZATION
METHACRYLATE)
IMPREGNATION
REFRACTION

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title = "Confocal Raman microscopy of supercritical fluid dyeing of polymers",

abstract = "Supercritical CO2 was used as a medium to introduce azo-dyes into polymers ( PMMA and PET). Confocal Raman microscopy has been applied using dry metallurgical and oil objectives to measure the concentration of dye as a function of distance from the surface to the core of the polymer samples. A significant gradient of dye concentration normal to the surface, down to the depth of ca. 100 mum, has been observed. In addition, cross-sections of cut dyed polymer samples have been analysed using a conventional mapping approach. The comparison between confocal depth and conventional mapping approaches has demonstrated that the use of the oil objective can provide reliable qualitative information on dye distribution in these systems. These confocal Raman experiments demonstrate the potential of this method in applications to polymeric materials processed with supercritical fluids.",

keywords = "CARBON-DIOXIDE, DEPTH RESOLUTION, SPECTROSCOPY, FILMS, CO2, MICROSPECTROSCOPY, PLASTICIZATION, METHACRYLATE), IMPREGNATION, REFRACTION",

author = "SG Kazarian and KLA Chan",

year = "2003",

doi = "10.1039/b304056a",

language = "English",

volume = "128",

pages = "499--503",

journal = "Analyst",

issn = "0003-2654",

publisher = "Royal Society of Chemistry",

number = "5",

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T1 - Confocal Raman microscopy of supercritical fluid dyeing of polymers

AU - Kazarian, SG

AU - Chan, KLA

PY - 2003

Y1 - 2003

N2 - Supercritical CO2 was used as a medium to introduce azo-dyes into polymers ( PMMA and PET). Confocal Raman microscopy has been applied using dry metallurgical and oil objectives to measure the concentration of dye as a function of distance from the surface to the core of the polymer samples. A significant gradient of dye concentration normal to the surface, down to the depth of ca. 100 mum, has been observed. In addition, cross-sections of cut dyed polymer samples have been analysed using a conventional mapping approach. The comparison between confocal depth and conventional mapping approaches has demonstrated that the use of the oil objective can provide reliable qualitative information on dye distribution in these systems. These confocal Raman experiments demonstrate the potential of this method in applications to polymeric materials processed with supercritical fluids.

AB - Supercritical CO2 was used as a medium to introduce azo-dyes into polymers ( PMMA and PET). Confocal Raman microscopy has been applied using dry metallurgical and oil objectives to measure the concentration of dye as a function of distance from the surface to the core of the polymer samples. A significant gradient of dye concentration normal to the surface, down to the depth of ca. 100 mum, has been observed. In addition, cross-sections of cut dyed polymer samples have been analysed using a conventional mapping approach. The comparison between confocal depth and conventional mapping approaches has demonstrated that the use of the oil objective can provide reliable qualitative information on dye distribution in these systems. These confocal Raman experiments demonstrate the potential of this method in applications to polymeric materials processed with supercritical fluids.

KW - CARBON-DIOXIDE

KW - DEPTH RESOLUTION

KW - SPECTROSCOPY

KW - FILMS

KW - CO2

KW - MICROSPECTROSCOPY

KW - PLASTICIZATION

KW - METHACRYLATE)

KW - IMPREGNATION

KW - REFRACTION

U2 - 10.1039/b304056a

DO - 10.1039/b304056a

M3 - Article

SN - 0003-2654

VL - 128

SP - 499

EP - 503

JO - Analyst

JF - Analyst

IS - 5

ER -

Confocal Raman microscopy of supercritical fluid dyeing of polymers

Abstract

Keywords

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