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Radiation-induced grafting of stimuli-responsive binary monomers: PDMAEMA/PEGMEMA onto PP films

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Abstract

Both poly[2-(dimethylamino) ethyl methacrylate] (PDMAEMA) and poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) were radiation grafted onto polypropylene films (PP) using gamma radiation from a 60Co source. PP was pre-irradiated by gamma ray for modification following by grafted PDMAEMA and PEGMEMA by a one step method. Grafting was studied as a function of the pre-irradiation dose between 20 and 180 kGy, dose rate of 10.4 kGy/h, and monomer concentration 50% of PDMAEMA/PEGMEMA (1/1) in different solvents (toluene, acetone, and methanol). FTIR-ATR, TGA, and DSC were carried out in the characterization of the graft copolymer obtained. Stimuli-responsive behavior and critical pH point were studied by swelling in water. pH and thermo-responsive films of PE-g-(DMAEMA/PEGMEMA) presented a lower critical solution temperature (LCST) of 50 °C and critical pH point around 8.7.

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Acknowledgements

The authors are grateful to B. Leal, F. García, and M. Cruz from ICN-UNAM, for technical assistance. This work was financially support by DGAPA-UNAM (Grant No. IN200208). Also, the authors thank the CONACyT (Mexico) for financial support Ph. D. studies for Angel Ramón Hernández-Martínez.

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Authors and Affiliations

  1. Facultad de Química, Departamento de Ingeniería Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México D.F., 04510, Mexico

    A. R. Hernández-Martínez

  2. Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México D.F., 04510, Mexico

    Emilio Bucio

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  1. A. R. Hernández-Martínez
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  2. Emilio Bucio
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Correspondence to Emilio Bucio.

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Hernández-Martínez, A.R., Bucio, E. Radiation-induced grafting of stimuli-responsive binary monomers: PDMAEMA/PEGMEMA onto PP films. J Radioanal Nucl Chem 283, 559–563 (2010). https://doi.org/10.1007/s10967-009-0385-z

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  • DOI: https://doi.org/10.1007/s10967-009-0385-z

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