ZHANG Hong-fang, MO Zhi-shen, LI San-xi, Pang De-ren, HUANG Bao-tong. A STUDY ON α-γ TRANSFORMATION OF ETHYLENE-PROPYLENE COPOLYMERS AND MIXTURES[J]. Acta Polymerica Sinica, 1990,(4):453-458.
ZHANG Hong-fang, MO Zhi-shen, LI San-xi, Pang De-ren, HUANG Bao-tong. A STUDY ON α-γ TRANSFORMATION OF ETHYLENE-PROPYLENE COPOLYMERS AND MIXTURES[J]. Acta Polymerica Sinica, 1990,(4):453-458.DOI:
Ethylene (E)-Propylene (P) copolymers and mixtures with long E-P sequence structures were investigated using WAXD and PLM methods. As the content of Cs reached more than 30 mol %
the (140)
(130) crystal planes appear at 2θ = 20 in X-ray diffraction patterns of me-Itcrystallized samples. Planes of (140)
(130) are the characteristics of γ-form
which originate from (a +γ) form in E-P copolymers.γ-form is mainly observed for long E-P sequence copolymers as slow cooling