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Citation: Wei Xunjun, Mo Zhishen, Zhang Hongfan, Yan Yuhua. ON THE LOW TEMPERATURE X-RAY DIFFRACTION OF COPOLYMER OF BUTADIENE AND ISOPRENE PREPARED WITH RARE-EARTH CATALYST SYSTEM[J]. Chinese Journal of Applied Chemistry, ;2016, 4(5): 45-48. shu

ON THE LOW TEMPERATURE X-RAY DIFFRACTION OF COPOLYMER OF BUTADIENE AND ISOPRENE PREPARED WITH RARE-EARTH CATALYST SYSTEM

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Corresponding author: Mo Zhishen,
Received Date: 4 June 1986
Available Online: 23 October 1986

Using WAXD method, the crystalline behaviours of poly (butadiene-co-isoprene) (Ln-PBI) at low temperature were studied. When the weight ratio of butadiene/isoprene is <80/20, the Ln-PBI becomes noncrystalline even at very low temoerature(-110℃). However, when weight ratio is >80/20, the crystallinity of Ln PBI increases with decrease of crystallization temoerature, but the lattice parameters changes insignificantly. The crystal of Ln-PBI is considered mainly contributed by Ln-PB sequences and still belongs to monoclinic system.
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