The Effect of Sequence Structure of Polyisoprene on its Crystallization and Reinforcement

Abstract:

soprene can be polymerized into three types of isomeric units, cis-1, 4, trans-1, 4 and 3, 4-units. Dyad or triad sequences of these units were investigated by ¹³C-NMR, which the signals are assigned for the sequences as well as the special linkages, head-to-head and head-to-tail structures. The crystallization ability of polyisoprene was mainly dependent on these sequence structures and was studied in this paper, including cold crystallization and stress-induced crystallization. As a result, the samples with regular sequence structure had better crystallized ability which will be as the guidance for the polymerization.

• Periodical: Advanced Materials Research (Volume 815)
• Pages: 201-204
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.815.201
• Online since: October 2013
• Authors: Shu Guang Li, Jin Mei Tan, Jing Wei He, Si Zhu Wu
• Keywords: ¹³C-NMR, Crystallization, Sequence Structure, Stress Relaxation

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DOI: 10.1021/ma060407+