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DSC studies on long-term properties of nitrocellulose and SYM-diphenylurea system

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Abstract

Long-term investigations of the phase structure and pore structure of nitrocellulose and sym-diethyldiphenylurea (C1) mixtures were conducted for samples with C1 mass fractions w C1=0.5, 0.6 and 0.8. The distribution of pore sizes and the composition of the nitrocellulose matrix were determined based on the melting enthalpy of C1. The three kinds of pores was observed with the characteristic size of about 7, 14 and 28 nm. Long-term storage of mixtures caused an increase in size of the smallest pores and a decrease of C1 concentration in the nitrocellulose matrix. The mechanism of changes in pore sizes is presented in term of multi-sheet model of NC fiber.

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Authors and Affiliations

  1. Department of Chemistry, Warsaw University of Technology Noakowskiego 3, 00-664, Warsaw, Poland

    A. Książczak & M. Ostrowski

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  1. A. Książczak
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  2. M. Ostrowski
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Correspondence to A. Książczak.

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Książczak, A., Ostrowski, M. DSC studies on long-term properties of nitrocellulose and SYM-diphenylurea system. Journal of Thermal Analysis and Calorimetry 77, 341–351 (2004). https://doi.org/10.1023/B:JTAN.0000033218.41984.a7

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  • DOI: https://doi.org/10.1023/B:JTAN.0000033218.41984.a7

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