TY - GEN
T1 - Effect of endothermic reaction associated with glass transition on the breakdown strength of biodegradable polymer films
AU - Kato, F.
AU - Matsushita, M.
AU - Omori, S.
AU - Ohki, Y.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - 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 that is slightly lower than the glass transition temperature. Then it decreases again. Moreover, the degree of increment in impulse breakdown strength at this hump depends on the crystallinity of PLLA. In the case of dc breakdown, a similar local maximum as seen in impulse breakdown is not observed. Three possibilities, namely energy absorption and structural change both due to glass transition, and space charge formation, are discussed to explain the experimental results.
AB - 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 that is slightly lower than the glass transition temperature. Then it decreases again. Moreover, the degree of increment in impulse breakdown strength at this hump depends on the crystallinity of PLLA. In the case of dc breakdown, a similar local maximum as seen in impulse breakdown is not observed. Three possibilities, namely energy absorption and structural change both due to glass transition, and space charge formation, are discussed to explain the experimental results.
UR - http://www.scopus.com/inward/record.url?scp=50549093151&partnerID=8YFLogxK
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U2 - 10.1109/CEIDP.2006.312106
DO - 10.1109/CEIDP.2006.312106
M3 - Conference contribution
AN - SCOPUS:50549093151
SN - 1424405475
SN - 9781424405473
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 241
EP - 244
BT - 2006 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
T2 - 2006 Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Y2 - 15 October 2006 through 18 October 2006
ER -