NMR study of phase composition and the process of phase separation in segmented polyurethanes

D. Sh Idiyatullin; V. S. Smirnov; M. P. Letunovskii; V. V. Strakhov

doi:10.1016/0032-3950(89)90118-4

NMR study of phase composition and the process of phase separation in segmented polyurethanes

D. Sh Idiyatullin, V. S. Smirnov, M. P. Letunovskii, V. V. Strakhov

Radiology

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Pulse NMR methods have been employed to investigate the phase state and the process of phase separation in segmented PUs based on 1,4-butanediol and 4,4′-diphenylmethane diisocyanate with crystallizable (polybutylene glycol adipate) and non-crystallizable as part of PU (polybutylene ethylene glycol adipate) polyesters. For both samples the same T_g of flexible blocks (-20°C) and temperature of the disappearance of the microphase of the rigid blocks (110°C) are observed. The segregation process was found to have two stages with acceleration as the temperature rises in a certain interval. The crystallization processes of the flexible blocks were found to influence the rate of segregation of the rigid blocks.

Original language	English (US)
Pages (from-to)	813-818
Number of pages	6
Journal	Polymer Science U.S.S.R.
Volume	31
Issue number	4
DOIs	https://doi.org/10.1016/0032-3950(89)90118-4
State	Published - 1989

Publisher link

10.1016/0032-3950(89)90118-4

Find It

Find It at U of M Libraries

Cite this

@article{f8f99228ada543bcba380407276df09d,

title = "NMR study of phase composition and the process of phase separation in segmented polyurethanes",

abstract = "Pulse NMR methods have been employed to investigate the phase state and the process of phase separation in segmented PUs based on 1,4-butanediol and 4,4′-diphenylmethane diisocyanate with crystallizable (polybutylene glycol adipate) and non-crystallizable as part of PU (polybutylene ethylene glycol adipate) polyesters. For both samples the same Tg of flexible blocks (-20°C) and temperature of the disappearance of the microphase of the rigid blocks (110°C) are observed. The segregation process was found to have two stages with acceleration as the temperature rises in a certain interval. The crystallization processes of the flexible blocks were found to influence the rate of segregation of the rigid blocks.",

author = "Idiyatullin, \{D. Sh\} and Smirnov, \{V. S.\} and Letunovskii, \{M. P.\} and Strakhov, \{V. V.\}",

year = "1989",

doi = "10.1016/0032-3950(89)90118-4",

language = "English (US)",

volume = "31",

pages = "813--818",

journal = "Polymer Science U.S.S.R.",

issn = "0032-3950",

publisher = "Pergamon Press Ltd.",

number = "4",

}

TY - JOUR

T1 - NMR study of phase composition and the process of phase separation in segmented polyurethanes

AU - Idiyatullin, D. Sh

AU - Smirnov, V. S.

AU - Letunovskii, M. P.

AU - Strakhov, V. V.

PY - 1989

Y1 - 1989

N2 - Pulse NMR methods have been employed to investigate the phase state and the process of phase separation in segmented PUs based on 1,4-butanediol and 4,4′-diphenylmethane diisocyanate with crystallizable (polybutylene glycol adipate) and non-crystallizable as part of PU (polybutylene ethylene glycol adipate) polyesters. For both samples the same Tg of flexible blocks (-20°C) and temperature of the disappearance of the microphase of the rigid blocks (110°C) are observed. The segregation process was found to have two stages with acceleration as the temperature rises in a certain interval. The crystallization processes of the flexible blocks were found to influence the rate of segregation of the rigid blocks.

AB - Pulse NMR methods have been employed to investigate the phase state and the process of phase separation in segmented PUs based on 1,4-butanediol and 4,4′-diphenylmethane diisocyanate with crystallizable (polybutylene glycol adipate) and non-crystallizable as part of PU (polybutylene ethylene glycol adipate) polyesters. For both samples the same Tg of flexible blocks (-20°C) and temperature of the disappearance of the microphase of the rigid blocks (110°C) are observed. The segregation process was found to have two stages with acceleration as the temperature rises in a certain interval. The crystallization processes of the flexible blocks were found to influence the rate of segregation of the rigid blocks.

UR - https://www.scopus.com/pages/publications/0024919546

UR - https://www.scopus.com/inward/citedby.url?scp=0024919546&partnerID=8YFLogxK

U2 - 10.1016/0032-3950(89)90118-4

DO - 10.1016/0032-3950(89)90118-4

M3 - Article

AN - SCOPUS:0024919546

SN - 0032-3950

VL - 31

SP - 813

EP - 818

JO - Polymer Science U.S.S.R.

JF - Polymer Science U.S.S.R.

IS - 4

ER -

NMR study of phase composition and the process of phase separation in segmented polyurethanes

Abstract

Publisher link

Find It

Other files and links

Fingerprint

Cite this