KFU. Card publication. Aspects of the synthesis of poly(styrene-block-isobutylene-block-styrene) by TiCl4-co-initiated cationic polymerization in open conditions

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ASPECTS OF THE SYNTHESIS OF POLY(STYRENE-BLOCK-ISOBUTYLENE-BLOCK-STYRENE) BY TICL4-CO-INITIATED CATIONIC POLYMERIZATION IN OPEN CONDITIONS

Form of presentation

Articles in international journals and collections

Year of publication

2021

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Authors, employees of KFU

Bekmukhamedov Giyaz Eduardovich, author

Yakhvarov Dmitriy Grigorevich, author

Other authors

Berezianko Ivan A., author

Glushkova Tatiana V., author

Kostjuk Sergei V., author

Makarevich M. I., author

Nikishau Pavel A., author

Ovcharenko Evgeny A., author

Rezvova Maria A., author

Bibliographic description in the original language

Aspects of the synthesis of poly(styrene-block-isobutylene-block-styrene) by TiCl4-co-initiated cationic polymerization in open conditions / M.I. Makarevich, P.A. Nikishau, I.A. Berezianko, T.V. Glushkova, M.A. Rezvova, E.A. Ovcharenko, G.E. Bekmukhamedov, D.G. Yakhvarov, S.V. Kostjuk // Macromol – 2021. – V. 1. – P. 243–255. https://doi.org/10.3390/macromol1040017

Annotation

The cationic polymerization of isobutylene and its block copolymerization with styrene using DiCumCl/TiCl4/2,6-lutidine initiating system has been studied in open conditions. It was shown that a higher concentration of proton trap is required in open conditions as compared to the glove box technique in order to have good control over molecular weight and polydispersity. Polyisobutylenes with Mn ≤ 50,000 g mol−1 and low polydispersity (Ð ≤ 1.2) were prepared at [Lu] = 12 mM. The synthesis of poly(styrene-block-isobutylene-block-styrene) triblock copolymer (SIBS) in open conditions required the addition of proton trap into two steps, half at the beginning of the reaction and the second half together with styrene. Following this protocol, a series of triblock copolymers with different length of central polyisobutylene block (from Mn = 20,000 g mol−1 to 50,000 g mol−1) and side polystyrene blocks (Mn = 4000 g mol−1–9000 g mol−1) with low polydispersity (Ð ≤ 1.25) were synthesized. High molecular SIBS (Mn > 50,000 g mol−1) with low polydispersity (Ð < 1.3) containing longer polystyrene blocks (Mn > 6000 g mol−1) demonstrated higher tensile strength (~13.5 MPa).

Keywords

cationic polymerization, living polymerization, isobutylene, styrene, polyisobutylene, poly(styrene-block-isobutylene-block-styrene)

The name of the journal

Macromol

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=259434&p_lang=2

Resource files

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F_macromol_01_00017.jpg	0,28	jpg	show / download
macromol_01_00017_.pdf	0,11	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bekmukhamedov Giyaz Eduardovich	ru_RU
dc.contributor.author	Yakhvarov Dmitriy Grigorevich	ru_RU
dc.contributor.author	Berezianko Ivan A.	ru_RU
dc.contributor.author	Glushkova Tatiana V.	ru_RU
dc.contributor.author	Kostjuk Sergei V.	ru_RU
dc.contributor.author	Makarevich M. I.	ru_RU
dc.contributor.author	Nikishau Pavel A.	ru_RU
dc.contributor.author	Ovcharenko Evgeny A.	ru_RU
dc.contributor.author	Rezvova Maria A.	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Aspects of the synthesis of poly(styrene-block-isobutylene-block-styrene) by TiCl4-co-initiated cationic polymerization in open conditions / M.I. Makarevich, P.A. Nikishau, I.A. Berezianko, T.V. Glushkova, M.A. Rezvova, E.A. Ovcharenko, G.E. Bekmukhamedov, D.G. Yakhvarov, S.V. Kostjuk // Macromol – 2021. – V. 1. – P. 243–255. https://doi.org/10.3390/macromol1040017	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=259434&p_lang=2	ru_RU
dc.description.abstract	Macromol	ru_RU
dc.description.abstract	The cationic polymerization of isobutylene and its block copolymerization with styrene using DiCumCl/TiCl4/2,6-lutidine initiating system has been studied in open conditions. It was shown that a higher concentration of proton trap is required in open conditions as compared to the glove box technique in order to have good control over molecular weight and polydispersity. Polyisobutylenes with Mn ≤ 50,000 g mol−1 and low polydispersity (Ð ≤ 1.2) were prepared at [Lu] = 12 mM. The synthesis of poly(styrene-block-isobutylene-block-styrene) triblock copolymer (SIBS) in open conditions required the addition of proton trap into two steps, half at the beginning of the reaction and the second half together with styrene. Following this protocol, a series of triblock copolymers with different length of central polyisobutylene block (from Mn = 20,000 g mol−1 to 50,000 g mol−1) and side polystyrene blocks (Mn = 4000 g mol−1–9000 g mol−1) with low polydispersity (Ð ≤ 1.25) were synthesized. High molecular SIBS (Mn > 50,000 g mol−1) with low polydispersity (Ð < 1.3) containing longer polystyrene blocks (Mn > 6000 g mol−1) demonstrated higher tensile strength (~13.5 MPa).	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	cationic polymerization	ru_RU
dc.subject	living polymerization	ru_RU
dc.subject	isobutylene	ru_RU
dc.subject	styrene	ru_RU
dc.subject	polyisobutylene	ru_RU
dc.subject	poly(styrene-block-isobutylene-block-styrene)	ru_RU
dc.title	Aspects of the synthesis of poly(styrene-block-isobutylene-block-styrene) by TiCl4-co-initiated cationic polymerization in open conditions	ru_RU
dc.type	Articles in international journals and collections	ru_RU