Preparation of high PMMA grafted particle SiO2 using surface initiated free radical polymerization

Gao, Baojiao; Li, Din; Lei, Qingjuan

doi:10.1007/s10965-010-9557-3

Cited by 32 publications

(19 citation statements)

References 27 publications

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“…The peaks at ∼1100, ∼800, and ∼470 cm −1 are the stretching vibration of Si OH, the asymmetric stretching vibration of Si O Si, and the symmetric stretching and bending vibrations of Si O Si, respectively [26,27,29,38]. The band at around 950 cm −1 is the out-of-plane bending vibration of OH [28]. After evaporation in the curing process, cross-linkings of the formed Si O Si network facilitate to some degree the formation of the SiO 2 space structure, which explains the conversion of SiO 2 from hydrophilic to hydrophobic [24].…”

Section: Ft-irmentioning

confidence: 99%

“…6 g raw SiO 2 was slowly added into the mixture. After 30 min, the white precipitates were filtered through suction, washed three times with DI water, and dried overnight at 130 • C. The possible mechanism for H-SiO 2 formation was elaborated in Scheme 1 [24,[27][28][29], where R is the organic group in KH-570. R-SiO 2 and H-SiO 2 were softly grinded before passing through a 150-mesh stainless steel sieve to remove bulk powders and impurities.…”

Section: Preparation Of Coating Mixturesmentioning

confidence: 99%

“…1. The broad absorption peak at ∼3440 cm −1 corresponds to Si OH and the adsorbed H 2 O [28]. The band at around 1630 cm −1 is the OH bending vibration of the adsorbed H 2 O [29].…”

Section: Ft-irmentioning

confidence: 99%

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Superhydrophobic coatings fabricated with polytetrafluoroethylene and SiO2 nanoparticles by spraying process on carbon steel surfaces

Wang

Chen

Jia

et al. 2015

Applied Surface Science

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Section: Ft-irmentioning

confidence: 99%

Section: Preparation Of Coating Mixturesmentioning

confidence: 99%

See 1 more Smart Citation

Superhydrophobic coatings fabricated with polytetrafluoroethylene and SiO2 nanoparticles by spraying process on carbon steel surfaces

Wang

Chen

Jia

et al. 2015

Applied Surface Science

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“…It is believed that both copolymerization and homopolymerization occurred in the free radical polymerization process and copolymerization dominates in the reaction in low concentration of monomers. But when monomer concentration is high enough, homopolymerization would prior to copolymerization and homopolymers would hinder process of copolymerization, leading to decrease in weight gain [11].…”

Section: Modification Of Hapmentioning

confidence: 99%

Immobilization of modified hydroxyapatite particles onto PET filter fabric for adsorption property

Jiang

Wang

et al. 2015

Journal of Industrial Textiles

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Polymer chains were introduced to esterified hydroxyapatite particle surface with methacrylic acid for modification and subsequently modified particles were immobilized onto PET filter fabric via heat fusion method to impart adsorption property. The polymerization process of methyl methacrylate on esterified hydroxyapatite surface was optimized and effects of treating time, temperature, particle size, and concentration on immobilization ratio and pore size of filter fabric were discussed. FTIR were applied to characterize the structure of modified hydroxyapatite and treated PET filter fabric. TG was used to determine average chain length of grafted polymer on particles. The results showed that polymer chain with length of 13.57 (mole ratio to hydroxyapatite) was introduced to particle surface and modified particles were embedded onto PET filter fabric with a hydroxyapatite immobilization ratio of 63.6% and pore size of 102.3 mm under optimum conditions. Cadmium adsorption amount of 118.4 mg/g was achieved at the cadmium concentration of 392.8 mg/L, implying that PET filter fabric has adsorption ability toward heavy metal ions.

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“…[28][29][30] Similar reports of surface-initiated graft polymerization on inorganic oxide such as SiO 2 , TiO, and ZnO have been disclosed. [31][32][33] However, to our knowledge, relatively less research about attapulgite (ATP) surface modification via surface-initiated graft polymerization has been carried out. In this research, poly(methyl methacrylate) (PMMA) was bonded onto the surface via three facile graft polymerizations as shown in Scheme 1.…”

Section: Introductionmentioning

confidence: 99%

Preparation of poly(methyl methacrylate)‐grafted attapulgite by surface‐Initiated radical polymerization

Gong

2014

J of Applied Polymer Sci

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Poly(methyl methacrylate) (PMMA) was bonded on the surface of attapulgite (ATP) by using an ammonium persulfate amine redox initiation system via grafting from approach. ATP was modified with (3-aminopropyl)triethoxysilane to anchor amine groups on the surface, and then the amine-functionalized ATP was further treated with methacryloyl chloride and 4,4 0 -azobis(4-cyanovaleric acid) to give methacryl-and azo-functionalized ATP, respectively. Subsequently, surface-initiated graft polymerization of MMA in a soap-free emulsion was performed to afford ATP/PMMA hybrids. Meanwhile, graft polymerizations on the surface of methacryl-and azo-functionalized ATP were carried out for comparison. The grafting of PMMA on the surface of ATP was characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis (TGA). The crystal structure of hybrids was characterized by X-ray diffraction analysis. The morphology of hybrids was observed by scanning electron microscopy and transmission electron microscopy. The degree of grafting obtained from surface-initiated graft polymerization in a soap-free emulsion was found to be the greatest (29.4%) estimated from TGA.

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Preparation of high PMMA grafted particle SiO2 using surface initiated free radical polymerization

Cited by 32 publications

References 27 publications

Superhydrophobic coatings fabricated with polytetrafluoroethylene and SiO2 nanoparticles by spraying process on carbon steel surfaces

Superhydrophobic coatings fabricated with polytetrafluoroethylene and SiO2 nanoparticles by spraying process on carbon steel surfaces

Immobilization of modified hydroxyapatite particles onto PET filter fabric for adsorption property

Preparation of poly(methyl methacrylate)‐grafted attapulgite by surface‐Initiated radical polymerization

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