{'fraction_non_alphanumeric': 0.03596287703016241, 'fraction_numerical': 0.0, 'mean_word_length': 5.587786259541985, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Composition-Dependent Properties of Heterogeneous Polymers: Application of Step-by-Step Averaging Approach. II. Thermoelastic Properties

The Step-by-Step-Averaging (SSA) technique which explicitly accounts for both the percolation phenomenon and the formation of a boundary interphase (BI) of the polymer matrix around disperse particles was extended to cover the composition dependence of the elastic moduli and thermal expansion coefficients of microheterogeneous materials (MHM). Judging by the quality of fit to pertinent experimental data, the SSA model is superior to other current approaches, provided the properties of components differ by several orders of magnitude (as is the case with filled polymers); otherwise (i.e., for polymer blends and/or block copolymers), the performances of SSA model and of the best "pragmatic" approaches are comparable.