Abstract
The crystallization behaviour and the molecular motion at low temperatures of the trans-polychloroprenes were measured with volume dilatometry and with broad line proton magnetic resonance absorption method, respectively.
The trans-polychloroprenes which possess crystallizability show different rates of crystallization; this difference is assumed to depend on the difference in the structural purity (the quantity of the trans-1, 4 configuration).
The glass transition temperature of the trans-polychloroprenes is assumed to be in the vicinity of-40°C from the value of the activation energy calculated from the relationship between temperature and proton magnetic resonance absorption line width; this temperature is approximately 20 degrees lower than the temperature corresponding to the inflection point of the line width-temperature curve.
