FT-IR imaging of polymer dissolution by solvent mixtures. 1. Solvents

Travis Ribar; Rohit Bhargava; Jack L. Koenig

doi:10.1021/ma000851r

FT-IR imaging of polymer dissolution by solvent mixtures. 1. Solvents

Travis Ribar, Rohit Bhargava, Jack L. Koenig

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

Abstract

The dissolution of poly(α-methylstyrene) (PAMS) by a binary solvent mixture containing systematically varied amounts of methyl isobutyl ketone (MIBK) in deuterated cyclohexane was studied using FT-IR imaging. From each sequential image in a timed sequence, spatially resolved spectral data were gathered and absorbance profiles for the field of view were obtained. This allowed the study of solvent penetration and quantitative analysis of the dissolution process from concentration profiles. The dissolution of the polymer was found to vary linearly with time for approximately 150 μm dissolved layer. The dissolution rate was found to increase linearly with MIBK concentration. In each solvent mixture, diffusion profiles were characteristic of case II diffusion. No solvent component segregation was seen. It is demonstrated that FT-IR imaging is a viable tool to characterize the dissolution of polymers by multicomponent solvents.

Original language	English (US)
Pages (from-to)	8842-8849
Number of pages	8
Journal	Macromolecules
Volume	33
Issue number	23
DOIs	https://doi.org/10.1021/ma000851r
State	Published - Nov 14 2000
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

Online availability

10.1021/ma000851r

Library availability

Discover UIUC Full Text

Cite this

@article{1d90481b60b9431c82bb72550db6376b,

title = "FT-IR imaging of polymer dissolution by solvent mixtures. 1. Solvents",

abstract = "The dissolution of poly(α-methylstyrene) (PAMS) by a binary solvent mixture containing systematically varied amounts of methyl isobutyl ketone (MIBK) in deuterated cyclohexane was studied using FT-IR imaging. From each sequential image in a timed sequence, spatially resolved spectral data were gathered and absorbance profiles for the field of view were obtained. This allowed the study of solvent penetration and quantitative analysis of the dissolution process from concentration profiles. The dissolution of the polymer was found to vary linearly with time for approximately 150 μm dissolved layer. The dissolution rate was found to increase linearly with MIBK concentration. In each solvent mixture, diffusion profiles were characteristic of case II diffusion. No solvent component segregation was seen. It is demonstrated that FT-IR imaging is a viable tool to characterize the dissolution of polymers by multicomponent solvents.",

author = "Travis Ribar and Rohit Bhargava and Koenig, {Jack L.}",

year = "2000",

month = nov,

day = "14",

doi = "10.1021/ma000851r",

language = "English (US)",

volume = "33",

pages = "8842--8849",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "23",

}

TY - JOUR

T1 - FT-IR imaging of polymer dissolution by solvent mixtures. 1. Solvents

AU - Ribar, Travis

AU - Bhargava, Rohit

AU - Koenig, Jack L.

PY - 2000/11/14

Y1 - 2000/11/14

N2 - The dissolution of poly(α-methylstyrene) (PAMS) by a binary solvent mixture containing systematically varied amounts of methyl isobutyl ketone (MIBK) in deuterated cyclohexane was studied using FT-IR imaging. From each sequential image in a timed sequence, spatially resolved spectral data were gathered and absorbance profiles for the field of view were obtained. This allowed the study of solvent penetration and quantitative analysis of the dissolution process from concentration profiles. The dissolution of the polymer was found to vary linearly with time for approximately 150 μm dissolved layer. The dissolution rate was found to increase linearly with MIBK concentration. In each solvent mixture, diffusion profiles were characteristic of case II diffusion. No solvent component segregation was seen. It is demonstrated that FT-IR imaging is a viable tool to characterize the dissolution of polymers by multicomponent solvents.

AB - The dissolution of poly(α-methylstyrene) (PAMS) by a binary solvent mixture containing systematically varied amounts of methyl isobutyl ketone (MIBK) in deuterated cyclohexane was studied using FT-IR imaging. From each sequential image in a timed sequence, spatially resolved spectral data were gathered and absorbance profiles for the field of view were obtained. This allowed the study of solvent penetration and quantitative analysis of the dissolution process from concentration profiles. The dissolution of the polymer was found to vary linearly with time for approximately 150 μm dissolved layer. The dissolution rate was found to increase linearly with MIBK concentration. In each solvent mixture, diffusion profiles were characteristic of case II diffusion. No solvent component segregation was seen. It is demonstrated that FT-IR imaging is a viable tool to characterize the dissolution of polymers by multicomponent solvents.

UR - http://www.scopus.com/inward/record.url?scp=0034316368&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034316368&partnerID=8YFLogxK

U2 - 10.1021/ma000851r

DO - 10.1021/ma000851r

M3 - Article

AN - SCOPUS:0034316368

SN - 0024-9297

VL - 33

SP - 8842

EP - 8849

JO - Macromolecules

JF - Macromolecules

IS - 23

ER -

FT-IR imaging of polymer dissolution by solvent mixtures. 1. Solvents

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this