Kinetic study of photoinduced quasi-simultaneous interpenetrating polymer networks

Brito, M. de; Allonas, Xavier; Croutxé‐Barghorn, Céline; Palmieri, Marie; Dietlin, Céline; Agarwal, Suman; Lellinger, Dirk; Alig, Ingo

doi:10.1016/j.porgcoat.2011.10.014

Cited by 28 publications

(26 citation statements)

References 32 publications

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“…Some kinetic studies on the photoinduced quasi-simultaneous IPN synthesis have been published [63][64][65]. Structure-property relationships in acrylate/epoxy IPNs have been investigated as a function of the reaction sequence and composition (the relationships between phase morphology, processing and physical properties of the IPNs are claimed as complex and not predictable a priori) [66].…”

Section: Monomers For the Manufacture Of Ipns Through Photopolymerizamentioning

confidence: 99%

Photochemical Production of Interpenetrating Polymer Networks; Simultaneous Initiation of Radical and Cationic Polymerization Reactions

Fouassier

Lalevée

2014

Polymers

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Abstract:In this paper, we propose to review the ways to produce, through photopolymerization, interpenetrating polymer networks (IPN) based, e.g., on acrylate/epoxide or acrylate/vinylether blends and to outline the recent developments that allows a one-step procedure (concomitant radical/cationic polymerization), under air or in laminate, under various irradiation conditions (UV/visible/near IR; high/low intensity sources; monochromatic/polychromatic sources; household lamps/laser diodes/Light Emitting Diodes (LEDs)). The paper illustrates the encountered mechanisms and the polymerization profiles. A short survey on the available monomer systems and some brief examples of the attained final properties of the IPNs is also provided.

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Section: Monomers For the Manufacture Of Ipns Through Photopolymerizamentioning

confidence: 99%

Photochemical Production of Interpenetrating Polymer Networks; Simultaneous Initiation of Radical and Cationic Polymerization Reactions

Fouassier

Lalevée

2014

Polymers

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“…Acrylate and epoxy systems will form an interpenetrated network (IPN) together upon irradiation because of the different polymerization mechanisms that do not interfere with each other . Gradient IPN is the best method to inscribe a wavefront via photochemical means.…”

Section: Resultsmentioning

confidence: 99%

Light induced gradient refractive index materials

Esen

Barghorn

Allonas

2015

Polymers for Advanced Techs

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Controlled and patterned variation of refractive index (wavefront) across a lens surface was obtained via the use of “phase mask”. Gradient interpenetrating network was selected to screen the acrylate and epoxy monomer to obtain necessary refractive index change over the lens surface. The best photoinitiator system was determined to give a stable and transparent wavefront as a mixture of 2 wt% Irgacure 250 (I 250), 1 wt% Isopropylthoxanthone (ITX) and 0.5 wt Irgacure 184 (I 184). It is found that a dipropylene glycol diacrylate (SR 508) and a triethylene glycol dimethacrylate (TGDM) improved the stability of the transparent wavefront because of higher Tg of the network. Haze problem, a consequence of diffusion of one monomer to other network because of the rate differences, was eliminated with IPN composed of TGDM (an acrylate with slow polymerization rate) and bis (3,4‐epoxy cyclohexylmethyl)adipate (BECMA, an epoxy with fast polymerization rate). A high refractive index additive, bromonaphthalene, resulted the best wavefront with lens power when incorporated into BECMA and TGDM IPN. Copyright © 2015 John Wiley & Sons, Ltd.

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“…Therefore, the radical photoinitiator concentration was varied from 0.5 wt% to 2 wt%, keeping the cationic photoinitiator concentration constant to 1 wt%. It can be seen that the increase in radical PI concentration contributes to improve noticeably both the rate of polymerization as well as the final conversion for the methacrylate 12 . This effect is merely attributed to the increase of the absorbed light with increasing the radical PI concentration, thereby resulting in increasing initiating rate.…”

Section: Epoxy Acrylate Ipnmentioning

confidence: 96%

Organic and Hybrid interpenetrated Polymer Networks for Advanced Materials

Croutxe-Barghoru

Brito

Allonas

et al. 2012

J. Photopol. Sci. Technol.

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This paper reports different routes combining photopolymerization of epoxy and acrylate monomers or photo sol-gel reaction yielding to organic or hybrid nanocomposites with enhanced thermomechanical properties. First homogeneous Interpenetrating Polymer Networks based on a dimethacrylate and an epoxide were straightforwardly synthesized by means of UV curing without any phase separation. Then, a dimethacrylate resin was mixed with a variable amount of a methacrylate trialkoxysilane precursor. Upon UV irradiation, a dual organic-inorganic polymerization occurred in one step leading to increased scratch resistance. The structural properties of the resulting coatings were investigated by Si solid state NMR spectroscopies. In addition, their thermomechanical behaviour was characterized by Dynamic Mechanical Analysis and scratch tests.

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Kinetic study of photoinduced quasi-simultaneous interpenetrating polymer networks

Cited by 28 publications

References 32 publications

Photochemical Production of Interpenetrating Polymer Networks; Simultaneous Initiation of Radical and Cationic Polymerization Reactions

Photochemical Production of Interpenetrating Polymer Networks; Simultaneous Initiation of Radical and Cationic Polymerization Reactions

Light induced gradient refractive index materials

Organic and Hybrid interpenetrated Polymer Networks for Advanced Materials

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