Synthesis and characterization of SiO2–PEG hybrid materials

Grandi, S.; Magistris, A.; Mustarelli, Piercarlo; Quartarone, Eliana; Tomasi, Corrado; Meda, L.

doi:10.1016/j.jnoncrysol.2005.11.033

Cited by 64 publications

(23 citation statements)

References 30 publications

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“…Modification with organosiloxane is one of the ideal methods available for improving the hydrophobicity of the surfaces of poly(methyl methacrylate-co-butyl acrylate) coats and Sicontaining polymers show a reduction in surface free energy [33][34][35]. In addition, for a long product life, strong adhesion between siloxane and the target matrix is required.…”

Section: Effects Of Amp-pdms Concentrationmentioning

confidence: 99%

RETRACTED: Synthesis and characterization of an alkoxy and methacryloxy propyl terminated polydimethylsiloxane for uses in the core–shell latex particles

Arab

Naghash

2015

Progress in Organic Coatings

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Section: Effects Of Amp-pdms Concentrationmentioning

confidence: 99%

RETRACTED: Synthesis and characterization of an alkoxy and methacryloxy propyl terminated polydimethylsiloxane for uses in the core–shell latex particles

Arab

Naghash

2015

Progress in Organic Coatings

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“…[33] Datsyuk et al [31] used TGA to investigate the weight loss of acid treated multiwalled nanotubes as a function of temperature in a nitrogen atmosphere, where the weight loss from 150-350 8C is attributed to loss of COOH groups, [56] and the weight loss from 350-500 8C corresponds to the loss of OH groups. [57] The TGA results in the decomposition of our COOH-MWNT and as received MWNT under nitrogen in these temperature ranges are shown in Table 3. This TGA analysis confirms that the acid-treated multiwalled nanotubes used in this study do not contain a large amount of carboxylic acid groups that are able to react with epoxy-PSepoxy, as COOH-MWNT contains only 2.6 wt.-% COOH groups, verifying the low density of grafting sites on the COOH-MWNT.…”

Section: Quantifying Loops and Tailsmentioning

confidence: 99%

Grafting Polymer Loops onto Functionalized Nanotubes: Monitoring Grafting and Loop Formation

Ashcraft¹,

Ji²,

Mays³

et al. 2011

Macro Chemistry & Physics

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Polystyrene functionalized at both ends (telechelic polymer) with epoxide groups (epoxy–PS–epoxy) was reacted with carboxylated multiwall carbon nanotubes (COOHMWNT) in solution in order to graft polymer chains at both ends onto the MWNT surface, forming loops. FT‐IR spectroscopy was employed to monitor the formation of aromatic esters and to quantify the amount of telechelic grafted to the nanotube surface as a function of reaction time. When the samples were further annealed in the melt, an increase in the aromatic ester peak was observed, indicating that the unreacted chain ends further grafted to MWNT surfaces to form loops. By reacting the grafted nanotube samples further with monocarboxy terminated poly(4‐methylstyrene) (COOHP4MS), the amount of epoxy–PS–epoxy that had only reacted at one end was determined. Reaction rate analysis indicates that that the grafting of epoxy–PS–epoxy to the nanotube surface is reaction controlled, as the FT‐IR spectroscopy signal grows as a function of approximately t0.3. These studies exemplify how FT‐IR spectroscopy can be used as a novel technique to quantify the amount of grafted polymer, grafting rate, and percent of difunctional polymers that form loops, and provide a method to create loop covered nanoparticles. magnified image

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“…Such a dispersion of fillers was first suggested by Weston and Steele [9]. Since then, a number of inorganic or ceramic and organic additives have been reported [10][11][12][13]. Recently, few works have been reported on the synthesis and characterization of nanocomposite polymer system [14][15][16] where due to small particle size, the electrochemical, magnetic and optical behaviour have been shown to improve drastically [17].…”

Section: Introductionmentioning

confidence: 99%

Structural, thermal and ion transport studies on nanocomposite polymer electrolyte-{(PEO + SiO2):NH4SCN} system

Pandey

Dwivedi

Tripathi

et al. 2008

Ionics

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Development and characterisation of polyethylene oxide (PEO)-based nanocomposite polymer electrolytes comprising of (PEO-SiO 2 ): NH 4 SCN is reported. For synthesis of the said electrolyte, polyethylene oxide has been taken as polymer host and NH 4 SCN as an ionic charge supplier. Sol-gel-derived silica powder of nano dimension has been used as ceramic filler for development of nanocomposite electrolytes. The maximum conductivity of electrolyte ∼2.0 × 10 −6 S/cm is observed for samples containing 30 wt.% silica. The temperature dependence of conductivity seems to follow an Arrhenius-type, thermally activated process over a limited temperature range.

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Synthesis and characterization of SiO2–PEG hybrid materials

Cited by 64 publications

References 30 publications

RETRACTED: Synthesis and characterization of an alkoxy and methacryloxy propyl terminated polydimethylsiloxane for uses in the core–shell latex particles

RETRACTED: Synthesis and characterization of an alkoxy and methacryloxy propyl terminated polydimethylsiloxane for uses in the core–shell latex particles

Grafting Polymer Loops onto Functionalized Nanotubes: Monitoring Grafting and Loop Formation

Structural, thermal and ion transport studies on nanocomposite polymer electrolyte-{(PEO + SiO2):NH4SCN} system

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