Abstract
The temperature dependence of two Bragg reflections was measured for solid poly(γ-methyl D-glutamate) in the β-form in the temperature range from −80 to 120°C. The spacing—temperature curve has a break point in the vicinity of 20°C. From the temperature dependence of integrated intensity, the break point observed is considered to be related to the onset of side-chain motions and to be a transition analogous to the glass transition.
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Matsushima, N., Hikichi, K. X-Ray Scattering of Synthetic Poly(α-amino acid)s in the Solid State. IV. Transition of Poly(γ-methyl D-glutamate) in the β-Form. Polym J 9, 391–394 (1977). https://doi.org/10.1295/polymj.9.391
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DOI: https://doi.org/10.1295/polymj.9.391