Surface modification of polymers—I. Grafting initiated by photo-generated hydroperoxides

Geuskens, Georges; Kanda, M.N.

doi:10.1016/0014-3057(91)90026-k

Cited by 25 publications

(6 citation statements)

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“…It is well known that oxygen generally inhibits the radical polymerization of vinyl monomers. It has been reported, however, that during the photoirradiation of a polyethylene film in the presence of oxygen, peroxides capable of initiating grafting reactions are generally formed 13, 21–25. To clarify the effect of oxygen on the photografting of MAA under air, we examined the photoinduced formation of peroxide on an LLDPE film, and the results are shown in Figure 5.…”

Section: Resultsmentioning

confidence: 99%

Examination of the role of oxygen in the photografting of methacrylic acid on a polyethylene film with a mixed solvent consisting of water and organic solvents

Irwan

Kuroda

Kubota

et al. 2003

J of Applied Polymer Sci

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ABSTRACT:The photografting of methacrylic acid (MAA) on a linear low-density polyethylene film (thickness ϭ 30 m) under air and nitrogen atmospheres was investigated at 60°C in mixed solvents consisting of water and an organic solvent, with xanthone as a photoinitiator. The organic solvents used were acetone, methanol, tetrahydrofuran, and dioxane. A maximum percentage of grafting occurred at a certain concentration of the organic solvent in the mixed solvent. This was observed for the systems under both air and nitrogen. The grafting reaction under air exhibited an induction period, but the rate of grafting after the period was greater than that under nitrogen. The formation of poly(ethylene peroxide)s by photoirradiation seemed to be a factor for the accelerated photografting under air. On the basis of attenuated total reflection infrared spectroscopy and scanning electron microscopy of the grafted film, the MAA-grafted chains of the sample prepared under air tended to penetrate more deeply inside the film than those of the sample prepared under nitrogen. The resulting grafted films exhibited a pH-responsive character: the grafted films shrank in an acidic medium but swelled in alkaline medium. This was evaluated from measurements of dimensional changes in the grafted films.

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Section: Resultsmentioning

confidence: 99%

Examination of the role of oxygen in the photografting of methacrylic acid on a polyethylene film with a mixed solvent consisting of water and organic solvents

Irwan

Kuroda

Kubota

et al. 2003

J of Applied Polymer Sci

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“…Moreover, we remark that C M = k tr / k p represents the monomer transfer constant. At 60 °C, C M ≈7 × 10 −5 39…”

Section: Discussionmentioning

confidence: 99%

ESR studies in γ‐irradiated and PS‐radiation‐grafted poly(vinylidene fluoride)

Aymes-Chodur

Esnouf

Moël

2001

J Polym Sci B Polym Phys

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The fluoropolymer poly(vinylidene fluoride) was irradiated with ␥ rays to induce a polystyrene (PS) radiation grafting via an indirect method. Electron spin resonance and Fourier transform infrared studies were performed to identify the species that initiated the PS grafting. Specific experiments were performed to prove separately the importance of each kind of radical. A localization of the radicals in this irradiated polymer is proposed, and a kinetic model of the grafting is given.

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“…The compounds containing labile -O-O-bonds in their structure are the sources of free radicals. That is why they are used as the initiators for polymerization reactions of unsaturated compounds, as well as curing and vulcanizing agents of polymeric systems [1,2].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of peroxy oligomers using 1,2-epoxy-3-tert-butyl peroxypropane

Bratychak¹,

Bratychak²,

Astakhova³

et al. 2008

ChChT

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The possibility of peroxy oligomer synthesis has been studied by three methods: telomerization of diepoxy derivatives of ethylene glycol or Bisphenol A using 1,2-epoxy-3-tert-butyl peroxypropane as telogen, modification of phenol-formaldehyde resins by 1,2-epoxy-3-tert-butyl peroxypropane and polycondensation of phenol containing –O–O– bonds with formaldehyde. The peroxy oligomers obtaining conditions have been established and 7 new oligomers with peroxy groups have been synthesized. The structures of synthesized oligomers have been verified by chemical and spectral methods.

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Surface modification of polymers—I. Grafting initiated by photo-generated hydroperoxides

Cited by 25 publications

References 0 publications

Examination of the role of oxygen in the photografting of methacrylic acid on a polyethylene film with a mixed solvent consisting of water and organic solvents

Examination of the role of oxygen in the photografting of methacrylic acid on a polyethylene film with a mixed solvent consisting of water and organic solvents

ESR studies in γ‐irradiated and PS‐radiation‐grafted poly(vinylidene fluoride)

Synthesis of peroxy oligomers using 1,2-epoxy-3-tert-butyl peroxypropane

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