Effect of α- or β-Copper phthalocyanine (CuPc) as a nucleating agent through crystallization of trans-1,4-polyisoprene (TPI) was evaluated. Observation by polarized optical microscopy showed that the low-melting crystal form is generated at the interface between TPI and either of α- or β-CuPc selectively when crystallized at 38 °C. In differential scanning calorimetry measurements, TPI composites containing α- or β-CuPc showed higher crystallization temperature than that of pure TPI during the cooling process from the melt.
- Tomoya Tsuboi
- Masashi Harada
- Takashi Itoh