The shear-induced crystallization behavior of the blends of cyclic polyethylene (C-PE) and linear polyethylene (L-PE) was investigated. This figure shows the formation rate of shish-like fibril crystals (I) in the blend systems of C-PE(230k)/L-PE(42k) and C-PE(230k)/L-PE(104k) against the weight fraction of L-PE, ΦL-PE. I reached a maximum at a certain ΦL-PE. As ΦL-PE increased, that is, as the entanglement density increased, the formation of the oriented melt was promoted. Crystallization was also suppressed by the entanglements. The maximum value of I was observed owing to these two competing factors.
- Keiko Kobayashi
- Shinichi Yamazaki
- Kunio Kimura
