Grafting of poly(acrylic acid) onto nonporous glass bead surfaces

Yin, Ranyu; Ottenbrite, Raphael M.; Siddiqui, Junaid A.

doi:10.1002/(sici)1099-1581(199712)8:12<761::aid-pat714>3.0.co;2-6

Cited by 10 publications

(7 citation statements)

References 19 publications

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“…Among different adsorbents, inorganic supports modified with both inorganic and organic functionalities have been used in various areas, notably in metal ion preconcentration [15,16], ion exchange [17], and different engineering applications [18]. Recently, glass beads have been used as supporting material for surface modification due to their arbitrarily controllable and narrow size dispersion, mechanical strength and low cost [19].…”

Section: Introductionmentioning

confidence: 99%

Surface modification of glass beads with glutaraldehyde: Characterization and their adsorption property for metal ions

Özmen

Can

Akın

et al. 2009

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Surface modification of glass beads with glutaraldehyde: Characterization and their adsorption property for metal ions

Özmen

Can

Akın

et al. 2009

Journal of Hazardous Materials

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“…To overcome this problem this study was undertaken to surface modify the beads by immobilizing polymers on the surface. Grafting reactions on nonporous glass beads [1,6,7] or porous silica [8 -10] have also attracted attention and have been studied extensively.…”

Section: Introductionmentioning

confidence: 99%

“…Since it is known that silanol groups are few in number [11], etching procedures were used to increase the silanol functionality [12]. Basically, during the etching procedure Si O Si groups react with hydroxyl ions to form silanol components and Si O anions.…”

Section: Introductionmentioning

confidence: 99%

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Effects of surface modification of glass beads with poly(acrylic acid)

Zengin¹,

Hu²,

Siddiqui³

et al. 2002

Designed Monomers and Polymers

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Etched glass beads were functionalized with 3-aminopropyltriethoxysi lane (APS) and glycidoxypropyltrimethoxysilane (GPS). The surface of glass beads were further modi ed with poly(acrylic acid) by reacting the carboxyl groups on poly(acrylic acid) with the amino groups of the grafted aminopropyltriethoxysil ane. The modi cations were characterized by FT-IR spectroscopy and tensiometry for contact angle and porosity measurements. Five different molecular weight PAA polymers ranging from 2,000 to 3,000,000 were grafted with less than expected increase of grafting% with molecular weight. The amount of poly(acrylic acid) (PAA) on the surface was determined from thermal gravimetric analysis and elemental analysis data. The surface properties of surface modi ed glass beads were determined by measuring water and hexane penetration rate and contact angle. The surface morphology was examined by scanning electron microscopy.

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“…Recently, several reports have shown that it is possible to chemically modify natural fibers through a surface‐treatment reaction. Silane coupling agents are applied to natural fibers to improve the overall performance in reinforced composite materials by generating an interface between an organic polymer and the fibers 17–19…”

Section: Introductionmentioning

confidence: 99%

Grafting of poly(acrylic acid) onto cellulosic microfibers and continuous cellulose filaments and characterization

Loría‐Bastarrachea

Carrillo-Escalante

Aguilar‐Vega

2001

J of Applied Polymer Sci

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ABSTRACT:Results from the grafting of poly(acrylic acid) (PAA) onto cellulosic microfibers and continuous cellulose filaments are presented. The grafting of PAA onto cellulosic fibers offers the possibility of developing enhanced ion exchange and fluid absorbency on the fibers. The grafting of PAA was carried out with a two-step procedure. First, vinyl-terminated ethoxy silane was deposited on the surface of the fiber. This was followed by a grafting polymerization reaction in aqueous media of acrylic acid with different concentrations of potassium persulfate (KPS), which acted as the initiator. The percentage of grafting increased with increasing KPS concentration and reached a maximum value at a concentration of about 0.4 wt % with respect to the weight of the fiber. The grafted copolymer was characterized by Fourier transform infrared spectroscopy. Strong evidence that the grafting reaction was successful was given by the presence of a band, with a maximum at 1732 cm Ϫ1, that was characteristic of carbonyl group absorption and was not initially present in the cellulosic fibers. The water absorption of the cellulosic microfibers grafted with PAA was three times greater than the water absorption of the nongrafted microfibers. The mechanical properties of continuous cellulose filaments did not change drastically with PAA grafting.

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Grafting of poly(acrylic acid) onto nonporous glass bead surfaces

Cited by 10 publications

References 19 publications

Surface modification of glass beads with glutaraldehyde: Characterization and their adsorption property for metal ions

Surface modification of glass beads with glutaraldehyde: Characterization and their adsorption property for metal ions

Effects of surface modification of glass beads with poly(acrylic acid)

Grafting of poly(acrylic acid) onto cellulosic microfibers and continuous cellulose filaments and characterization

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