Research output: Contribution to journal › Article › peer-review
Structural characterization of polybutadiene synthesized via cationic mechanism. / Rozentsvet, Victor A. ; Stotskaya , Olesya A. ; Ivanova, Valentina P. ; Kuznetsova, Marianna G. ; Tolstoy, Peter M. ; Kostjuk, Sergei V. .
In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 56, No. 4, 15.02.2018, p. 387-398.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Structural characterization of polybutadiene synthesized via cationic mechanism
AU - Rozentsvet, Victor A.
AU - Stotskaya , Olesya A.
AU - Ivanova, Valentina P.
AU - Kuznetsova, Marianna G.
AU - Tolstoy, Peter M.
AU - Kostjuk, Sergei V.
PY - 2018/2/15
Y1 - 2018/2/15
N2 - The microstructure of polybutadiene synthesized via cationic polymerization using TiCl 4-based initiating systems has been investigated using 1D ( 1Н, 2Н, and 13С) and 2D (HSQC and HMBC) NMR spectroscopy. It was found that trans-1,4-unit is predominant structure of unsaturated part of polymer chain. Besides, the small amount of 1,2-structures was also detected, while cis-1,4-units were totally absent. The signals of carbon atoms of three types of head groups (trans-1,4-, 1,2-, and tert-butyl) and two types of end groups (trans-1,4-Cl and 1,2-Cl) were identified for the first time in macromolecules of cationic polybutadiene. It was showed that tert-butyl head groups were formed due to the presence in monomer of admixtures of isobutylene. The new methodology for calculation of the content of different structural units in polybutadiene chain as well as the head and end groups was proposed. It was established that main part of 1,2-units distributed randomly along the polybutadiene chain as separate units between trans-1,4-structures.
AB - The microstructure of polybutadiene synthesized via cationic polymerization using TiCl 4-based initiating systems has been investigated using 1D ( 1Н, 2Н, and 13С) and 2D (HSQC and HMBC) NMR spectroscopy. It was found that trans-1,4-unit is predominant structure of unsaturated part of polymer chain. Besides, the small amount of 1,2-structures was also detected, while cis-1,4-units were totally absent. The signals of carbon atoms of three types of head groups (trans-1,4-, 1,2-, and tert-butyl) and two types of end groups (trans-1,4-Cl and 1,2-Cl) were identified for the first time in macromolecules of cationic polybutadiene. It was showed that tert-butyl head groups were formed due to the presence in monomer of admixtures of isobutylene. The new methodology for calculation of the content of different structural units in polybutadiene chain as well as the head and end groups was proposed. It was established that main part of 1,2-units distributed randomly along the polybutadiene chain as separate units between trans-1,4-structures.
KW - cationic polymerization
KW - microstructure
KW - polybutadiene
KW - SYSTEM
KW - 1,3-PENTADIENE
KW - 1,3-DIENES
KW - POLYISOPRENE
KW - PRODUCT POLYMERS
KW - POLYMERIZATION
KW - INSIGHT
KW - C-13 NMR-SPECTROSCOPY
KW - MAGNETIC-RESONANCE-SPECTROSCOPY
KW - DIENE POLYMERS
UR - http://www.scopus.com/inward/record.url?scp=85033778415&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/structural-characterization-polybutadiene-synthesized-via-cationic-mechanism
U2 - 10.1002/pola.28905
DO - 10.1002/pola.28905
M3 - Article
VL - 56
SP - 387
EP - 398
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
SN - 0887-624X
IS - 4
ER -
ID: 9329564