CHARACTERIZATION AND THERMAL REARRANGEMENT INVESTIGATION OF 1,4-POLYBUTADIENE BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY

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ZIAEI FARSHID

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Journal Paper

Paper Information

Journal: Iranian Journal of Polymer Science and Technology Year:2010 | Volume:22 | Issue:5 (ISSUE NO.103) Page(s): 389-398

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Title

CHARACTERIZATION AND THERMAL REARRANGEMENT INVESTIGATION OF 1,4-POLYBUTADIENE BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY

Author(s)

ZIAEI FARSHID | Issue Writer Certificate

Keywords

POLYBUTADIENEQ3

NMRQ2

MICROSTRUCTUREQ2

THERMAL REARRANGEMENTQ3

GPCQ3

Abstract

Microstructural investigation of low molecular weight 1,4-POLYBUTADIENE (1,4-PBD) was studied by 1H and 13C nuclear magnetic resonance spectroscopy (NMR). The isomer contents of 1,4-cis, 1,4-trans and 1,2- vinyl in POLYBUTADIENE MICROSTRUCTURE were determined. The number average molecular weight for low molecular weight POLYBUTADIENE was measured by NMR techniques and comparison was made with gel permeation chromatography (GPC) results. Due to the presence of methyl end group and considering the repeating units in 1,4-PBD MICROSTRUCTURE, the number average molecular weight was calculated by NMR techniques. This study was accomplished by obtaining cis-trans isomerization in non-pyrolytic anaerobic conditions at 200 to 250°C. The results showed that increase in heat treatment time increased the trans isomer and decreased the cis isomer contents respectively. The presence of 1,2-vinyl isomers increased the average molecular weights by heat treatment time at 250°C and did not lead to any chain scission in 1,4-PBD.

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APA: Copy

ZIAEI, FARSHID. (2010). CHARACTERIZATION AND THERMAL REARRANGEMENT INVESTIGATION OF 1,4-POLYBUTADIENE BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 22(5 (ISSUE NO.103)), 389-398. SID. https://sid.ir/paper/6630/en

Vancouver: Copy

ZIAEI FARSHID. CHARACTERIZATION AND THERMAL REARRANGEMENT INVESTIGATION OF 1,4-POLYBUTADIENE BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2010;22(5 (ISSUE NO.103)):389-398. Available from: https://sid.ir/paper/6630/en

IEEE: Copy

FARSHID ZIAEI, “CHARACTERIZATION AND THERMAL REARRANGEMENT INVESTIGATION OF 1,4-POLYBUTADIENE BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 22, no. 5 (ISSUE NO.103), pp. 389–398, 2010, [Online]. Available: https://sid.ir/paper/6630/en

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