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Physical aspects of the effect of chain transfer agents on the properties of poly(methyl methacrylate)

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Abstract

It was found that PMMA prepared in the presence of the chain transfer agents dodecyl mercaptan and pentamethyldisilane possess noticeably better properties as a radiation resist relative to the polymer with a close molecular mass obtained in the absence of a transfer agent. By means of densitometry, GPC, calorimetry, small-angle X-ray scattering, and light scattering, it was shown that the existence of weak bonds, the narrowing of the molecular-mass distribution, and the formation of a looser supermolecular structure are responsible for the enhanced radiation sensitivity of the polymers prepared under the chain-transfer reaction conditions.

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Correspondence to S. A. Bulgakova.

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Original Russian Text © S.A. Bulgakova, Yu.D. Semchikov, K.V. Kir’yanov, T.A. Gracheva, K.S. Klychkov, 2008, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2008, Vol. 50, No. 7, pp. 1223–1230.

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Bulgakova, S.A., Semchikov, Y.D., Kir’yanov, K.V. et al. Physical aspects of the effect of chain transfer agents on the properties of poly(methyl methacrylate). Polym. Sci. Ser. A 50, 792–797 (2008). https://doi.org/10.1134/S0965545X08070092

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  • DOI: https://doi.org/10.1134/S0965545X08070092

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