Structural characterization of telechelic polyisobutylene diol
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SCOPUS
- Title
- Structural characterization of telechelic polyisobutylene diol
- Authors
- Banerjee, S; Shah, PN; Jeong, Y; CHANG, TAIHYUN; Seethamraju, K; Faust, R
- Date Issued
- 2015-01-09
- Publisher
- Elsevier
- Abstract
- The chemical homogeneity of telechelic polyisobutylene diol (PIB-diol), prepared by hydroboration-oxidation of allyl telechelic PIB obtained by reacting living PIB with allyltrimethylsilane, was investigated by liquid chromatography at critical conditions (LCCC) and HPLC coupled with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). A normal phase gradient HPLC method was developed that was able to separate the as-synthesized PIB-diol into three components; PIB-diol, PIB-monool and PIB without any OH functionality. These were analyzed by MALDI-TOF MS, which suggested that the reaction of living PIB with allyltrimethylsilane was incomplete. LCCC using refractive index (RI) detector as a concentration detector allowed separation and quantification of PIB species according to their chemical heterogeneity (PIB-diol = 95.3%, PIB-monool = 3.3%, non-functional PIB = 1.4%). The calculated number average functionality (F-n) of PIB-diol = 1.94 suggests high quality of PIB-diol suitable for high molecular weight polyurethane synthesis. (C) 2014 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27226
- DOI
- 10.1016/J.CHROMA.2014.12.022
- ISSN
- 0021-9673
- Article Type
- Article
- Citation
- JOURNAL OF CHROMATOGRAPHY A, vol. 1376, page. 98 - 104, 2015-01-09
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