TY - GEN
T1 - Fracture behavior of heat treated liquid crystalline polymers
AU - Reyes-Mayer, A.
AU - Alvarado-Tenorio, B.
AU - Romo-Uribe, A.
AU - Flores, O.
AU - Campillo, B.
AU - Jaffe, M.
PY - 2013
Y1 - 2013
N2 - Thermotropic polymers are thermally treated in air at temperatures T a, where ΔT =Ta - Ts→n=40°C, and Ts→n is the solid-to-nematic transition. Samples are extruded thin films of a series of thermotropic random copolyesters termed B-N, COTBP and RD1000. The thermal treatment produces a second endotherm without changing Ts→n for B-N and RD1000. However, for COTBP Ts→n is significantly increased. Regardless of the complex thermal behavior exhibited by the thermotropes, the thermal treatment produces a significant increase in Young's modulus, more than 30% for B-N and over 100% for COTBP. The increase in mechanical modulus is correlated with a thermally-induced fiber-like morphology.
AB - Thermotropic polymers are thermally treated in air at temperatures T a, where ΔT =Ta - Ts→n=40°C, and Ts→n is the solid-to-nematic transition. Samples are extruded thin films of a series of thermotropic random copolyesters termed B-N, COTBP and RD1000. The thermal treatment produces a second endotherm without changing Ts→n for B-N and RD1000. However, for COTBP Ts→n is significantly increased. Regardless of the complex thermal behavior exhibited by the thermotropes, the thermal treatment produces a significant increase in Young's modulus, more than 30% for B-N and over 100% for COTBP. The increase in mechanical modulus is correlated with a thermally-induced fiber-like morphology.
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U2 - 10.1557/opl.2013.282
DO - 10.1557/opl.2013.282
M3 - Conference contribution
AN - SCOPUS:84880902539
SN - 9781605114620
T3 - Materials Research Society Symposium Proceedings
SP - 137
EP - 142
BT - Advanced Structural Materials - 2012
T2 - 21st International Materials Research Congress, IMRC 2012
Y2 - 13 August 2012 through 18 August 2012
ER -