In situ sequential polyurethane poly(methyl methacrylate) interpenetrating polymer networks: structure and elasticity of polyurethane networks

Tabka, Mohamed Tahar; Widmaier, Jean‐Michel; Meyer, G. C.

doi:10.1021/ma00194a055

Cited by 16 publications

(5 citation statements)

References 8 publications

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“…Additionally, IPNs technology was proven an excellent polymer modification method for stable integration of two polymer networks with different properties or different functions by physical entanglements . Due to the strong phase separation liability between the hydrophobic polymer networks and the hydrophilic polymer networks, the hydrophobicity or the hydrophilicity of the two polymer networks composed of the IPNs is similar at present, at least not opposite, while few reports are presented for both hydrophobic and hydrophilic IPNs in the literature for the reason that the hydrophobic–hydrophilic IPNs cannot be directly synthesized by synchronous or sequential suspension polymerization . We proposed that the phase separation liability will not be very serious as one of the hydrophobic polymer networks is transformed to the hydrophilic polymer networks by a chemical reaction after preparation of the hydrophobic–hydrophobic IPNs, and the hydrophobic–hydrophilic IPNs will be synthesized accordingly.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic–hydrophilic polydivinylbenzene/polyacryldiethylenetriamine interpenetrating polymer networks and its adsorption performance toward salicylic acid from aqueous solutions

et al. 2014

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in Wiley Online Library (wileyonlinelibrary.com) Hydrophobic-hydrophilic interpenetrating polymer networks (IPNs) composed of polydivinylbenzene (PDVB) and polyacryldiethylenetriamine (PADETA) were prepared and its adsorption performance toward salicylic acid was studied from aqueous solutions. The structure of PDVB/PADETA IPNs was characterized by Fourier transform infrared spectroscopy, N 2 adsorption-desorption isotherms, weak basic exchange capacity, and swelling ratio, respectively. The results indicated that PDVB/PADETA IPNs possessed both hydrophobic and hydrophilic properties and they were much superior to the hydrophobic PDVB and the hydrophilic PADETA in adsorption of salicylic acid from aqueous solutions. The Freundlich model was more appropriate for fitting the equilibrium data than the Langmuir model and the isosteric enthalpy decreased with increment of the equilibrium uptakes. The breakthrough dynamic capacity of salicylic acid on PDVB/PADETA IPNs was 77.27 mg/mL wet resin at an initial concentration of 650.4 mg/L and a flow rate of 7.2 BV/h (bed volume, 1 BV 5 10 mL) and the saturated dynamic capacity was calculated to be 93.28 mg/mL wet resin. One hundred and forty milliliter of 0.01 mol/L of sodium hydroxide (w/v) and 40% of ethanol (v/v) could regenerate the resin column completely.

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Section: Introductionmentioning

confidence: 99%

Hydrophobic–hydrophilic polydivinylbenzene/polyacryldiethylenetriamine interpenetrating polymer networks and its adsorption performance toward salicylic acid from aqueous solutions

et al. 2014

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“…Our interest in that particular system comes from the fact that it takes part in the reactive medium when forming interpenetrating polymer networks based on polyurethanes 30 and vinyl polymers by a one shot process. 31 …”

Section: Introductionmentioning

confidence: 99%

Effect of stannous octoate on the thermal decomposition of 2,2?-azobis(isobutyronitrile)

Tabka¹,

Chenal²,

Widmaier³

2000

Polym. Int.

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“…A typical procedure is as follows. In a reaction flask equipped with nitrogen inlet and a magnetic stirrer and placed in a water bath, 1 mol macrodiol is mixed with 1.07 mol pluriisocyanate ( k = [NCO]/[OH] = 1.07) 33 and dissolved in ethyl acetate to form a 34 wt % homogeneous solution. When appropriate, calculated amounts of AIBN and TBPC were added to the solution under stirring.…”

Section: Methodsmentioning

confidence: 99%

Interference between reactants in simultaneous interpenetrating polymer network formation. II. Influence of the presence of a free‐radical initiator on polyurethane formation

Tabka

Widmaier

2002

J of Applied Polymer Sci

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Polyether polyurethane networks were prepared in solution at 25 and 60°C, using various organotin catalysts. The presence of a free-radical initiator [viz. azobisisobutyronitrile (AIBN)] in the reaction media has no effect on the catalytic efficiency of organotin(IV) compounds, whereas it causes severe deactivation of organotin(II) compounds. This effect was explained by the following mechanism: formation of a cyclic 1 : 1 complex by coordination of the nitrile groups of AIBN with the tin(II) atom, which both reduces the effective catalyst concentration and allows the early decomposition into radicals, as previously seen, leading to tin oxidation. The addition of a free-radical scavenger such as 3-tert-butyl pyrocatechol allows the maintenance of the catalyst efficiency of organotin(II) compounds at their reference level.

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In situ sequential polyurethane poly(methyl methacrylate) interpenetrating polymer networks: structure and elasticity of polyurethane networks

Cited by 16 publications

References 8 publications

Hydrophobic–hydrophilic polydivinylbenzene/polyacryldiethylenetriamine interpenetrating polymer networks and its adsorption performance toward salicylic acid from aqueous solutions

Hydrophobic–hydrophilic polydivinylbenzene/polyacryldiethylenetriamine interpenetrating polymer networks and its adsorption performance toward salicylic acid from aqueous solutions

Effect of stannous octoate on the thermal decomposition of 2,2?-azobis(isobutyronitrile)

Interference between reactants in simultaneous interpenetrating polymer network formation. II. Influence of the presence of a free‐radical initiator on polyurethane formation

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