{'fraction_non_alphanumeric': 0.04532967032967033, 'fraction_numerical': 0.006868131868131868, 'mean_word_length': 4.4, '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}}
Scaling analysis and distribution of the rotational correlation times of a tracer in rubbery and glassy poly(vinyl acetate): An electron spin resonance investigation

We studied by ESR the rotational motion of a paramagnetic tracer (a deuterated 15 N-enriched nitroxide) in poly(vinyl acetate) (PVAc). The reorientation of the tracer occurs via jumps of about 50° with a heterogeneous distribution of correlation times. Depending on the temperature range, the average correlation time scales as the α, β, and γ relaxation times of PVAc, i.e., = C i i , i = α, β, γ. On cooling, tracks the α relaxation to about the α-β bifurcation temperature and then the β relaxation down to the glass transition. In glassy PVAc / γ = C γ ≃ 1.