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Effects of endothermic reaction associated with glass transition on the impulse, DC, and AC breakdown strengths of poly-L-lactic acid (PLLA) and polyethylene terephthalate succinate (PETS) were studied experimentally. Impulse breakdown strength at first decreases monotonically with an increase in temperature for both PLLA and PETS. However, it increases and shows a hump when the temperature approaches...
Effect of endothermic reaction associated with glass transition on the DC and impulse breakdown strength of poly-L-lactic acid (PLLA) and polyethylene terephthalate succinate (PETS) was studied experimentally. Impulse breakdown strength decreases monotonically with an increase in temperature for both PLLA and PETS. However, it increases and shows a hump when the temperature approaches a certain temperature...
Effect of crystallinity change on electrical conduction characteristics of poly-L-lactic acid was studied experimentally. The crystallinity was changed by thermal annealing. The lower crystallinity samples have more remaining charge than the higher crystallinity samples. Moreover, at 80 degC that is above their glass transition temperatures (Tg: 55-60 degC), the conductivity is much higher in the...
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