Surface derivatization of poly(<i>p</i>‐phenylene terephthalamide) fiber designed for novel separation and extraction media

Abe, Akira; Saito, Yoshihiro; Imaizumi, Motohiro; Ogawa, Mitsuhiro; Takeichi, Tsutomu; Jinno, Kiyokatsu

doi:10.1002/jssc.200401938

Cited by 34 publications

(17 citation statements)

References 36 publications

(34 reference statements)

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“…The fibrous materials could be further applied to microscale sample preparation as the extraction media. More extensive studies, including more precise control of the column temperature, theoretical prediction of the retention during temperature-programmed elution, 14,46 and the development of other polymer-coated fiber-packed materials, [47][48][49] are currently being investigated in our laboratory, including the employment of these fibrous materials as an extraction medium in a miniaturized sample preparation technique.…”

Section: Discussionmentioning

confidence: 99%

High-Temperature Separations on a Polymer-Coated Fibrous Stationary Phase in Microcolumn Liquid Chromatography

et al. 2011

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Novel polymer-coated fiber-packed microcolumns in liquid chromatography (LC) have been developed. Typical polymeric materials, such as polydimethylsiloxane and polyethyleneglycol, which are conventional stationary phases of capillary columns in gas chromatography (GC), have been employed as coating materials onto the surface of fine filaments. Packed longitudinally with a bundle of polymer-coated filaments into a stainless-steel capillary of 0.8 mm i.d., 150 mm length, several types of polymer-coated fiber-packed columns were prepared, and the retention behavior of aromatic compounds on these columns has been studied. A good linear relationship was obtained for van't Hoff plots over the temperature range between 0 and 200 C, clearly indicating an excellent heat-resistant property of these polymer-coated fibrous stationary phases. Taking advantage of the heat-resistant feature of the fibrous stationary phases, the separation of several test mixtures with temperature-programmed elution was studied, where a solvent gradient program was additionally introduced if needed. Separation was also carried out with pure water as the mobile phase using an appropriate temperature program.

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Section: Discussionmentioning

confidence: 99%

High-Temperature Separations on a Polymer-Coated Fibrous Stationary Phase in Microcolumn Liquid Chromatography

et al. 2011

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“…In this article, we attempted to derivatize the surfaces of PPTA fibers in order to develop a fiber packed column. It has already been reported that the addition of other functional groups onto the nitrogen atoms contained in the amide groups can be carried out by chemical derivatization [29,30]. Additionally, it has been confirmed that the separation characteristics of the fibrous stationary phase can be tuned by changing the functional group on the surface of the PPTA fiber [30].…”

Section: Originalmentioning

confidence: 83%

“…Surface derivatization was conducted using a similar scheme as reported previously [29]. The reaction scheme is illustrated in Figure 1.…”

Section: Surface Derivatization Of Ppta Fibersmentioning

confidence: 99%

Retention Behavior of Fluorobenzenes on Fluoro-Derivatized Poly(<i>p</i>-phenylene terephthalamide) Fibrous Stationary Phases in Microcolumn Liquid Chromatography

et al. 2011

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IntroductionHigh performance liquid chromatography (HPLC) is one of the most important technologies in separation science in fields including agricultural, pharmaceutical, and medical science [1]. In particular, a significant degree of the performance of LC systems is due to columns which can separate complex mixtures, and columns are constantly being improved to obtain optimal separations of an enormous variety of samples. The most popular columns for HPLC are packed columns containing silica packings with octadecyl groups, called octadecylsilica (ODS) columns. The ODS column is appropriate for separations of a wide range of samples, and can be used for the rapid separations under high pressure conditions due to the good toughness of silica packings. Silica-gel particles with smaller sizes have also been developed to obtain the higher column efficiencies, high-sensitivity, and high-throughput analyses [2][3][4]. In order to use smaller particles, however, LC pumps need to have high levels of performance to flow mobile phases at higher pressures, due to increased column back pressures.Furthermore, it may somewhat difficult for silica-gel particles to separate samples under excessive basic conditions, due to decreases in theoretical plate numbers and tailing of sample peaks possibly induced by the hydrolysis of silica-surfaces in columns. Hence, silica-based columns might not be appropriate for separations of basic compounds in some cases. For a similar reason, structures composed of silica are not appropriate when using mobile phases consisting of only water alone.In contrast to these columns, packed columns with fibrous stationary phases have been developed. These fibers are aligned parallel in the column. This arrangement of fiber bundles makes it possible to flow mobile phases at low back pressures. AbstractSurface derivatization of poly(p-phenylene terephthalamide) (PPTA) fibers was studied to prepare novel stationary phases in liquid chromatography (LC). As one type of surface derivatization of synthetic fibers, alkyl or perfluoroalkyl chains as functional groups were introduced to the surfaces of PPTA fibers. When each functionalized fiber-packed column was used for LC, increases in retention power with respect to a variety of compounds were ascertained in comparison with that prepared by an untreated-fiber as the stationary phase. Furthermore, it was indicated that the perfluoroalkyl group introduced fibrous stationary phase showed a specific retention behavior with respect to halogenated benzenes. These results demonstrated that the derivatization of the surfaces of PPTA fibers was successfully carried out. Selectivity differences between the modified-fiber packed columns were also confirmed through the use of some sample probes.

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“…In order to further enhance the compatibility of the coating materials and the fiber surface, surface modification reactions of the filaments were studied. The preliminary experiments clearly demonstrated a successful surface modification of the filaments with several types of functional groups [50][51][52], although these reaction conditions should be further optimized to realize a novel stationary phase.…”

Section: Fibrous Stationary Phase In Microscale Separationsmentioning

confidence: 99%

Miniaturization for the Development of High Performance Separation Systems

Saito

Ueta

2017

Chromatography

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Miniaturization is a key technological approach to realize high performance separation systems that have several important features required in modern analytical methods. A smaller scale of the stationary phase synthesis enables a systematic analysis of the retention behavior and also a more efficient development of novel stationary phases in liquid chromatography. Development of microscale sample preparation technique has been regarded as a valuable supporting approach to the development of microscale separation methods. Effective on-line coupling of the microscale sample preparation and separation allows an efficient and rapid analysis without a loss of sensitivity for most of the analytical separations. In this review, development of the miniaturized separation techniques and the applications have been described from the view point of the authors' research group, including the development of novel stationary phase, microscale sample preparation techniques for liquid and gas sample matrices.

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Surface derivatization of poly(p‐phenylene terephthalamide) fiber designed for novel separation and extraction media

Cited by 34 publications

References 36 publications

High-Temperature Separations on a Polymer-Coated Fibrous Stationary Phase in Microcolumn Liquid Chromatography

High-Temperature Separations on a Polymer-Coated Fibrous Stationary Phase in Microcolumn Liquid Chromatography

Retention Behavior of Fluorobenzenes on Fluoro-Derivatized Poly(<i>p</i>-phenylene terephthalamide) Fibrous Stationary Phases in Microcolumn Liquid Chromatography

Miniaturization for the Development of High Performance Separation Systems

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