Journal
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
Volume 22, Issue 7, Pages 569-574Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1023666X.2017.1312754
Keywords
Fourier transformed infrared spectroscopy; gel permeation chromatography; nuclear magnetic resonance spectroscopy; polyurethane
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Funding
- Cooperation Project of Forestry Science and Technology from Zhejiang Province
- Chinese Academy of Forestry
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One kind of unknown structure sequence and composition ratio of thermoplastic polyurethane elastomers were characterized by nuclear magnetic resonance spectroscopy, Fourier transformed infrared spectroscopy, and gel permeation chromatography (GPC). The results showed that the polyurethane (PU) was obtained from poly(tetramethylene glycol) (PTMG) as soft segment, 1,4-butanediol (BDO) as chain extender, and 4,4-methylenediphenyl diisocyanate (MDI) as hard segment. Furthermore, the composition ratio of MDI:PTMG:BDO was 2.07:1.22:1.00. At last, the molecular weight of PU was determined by GPC, and the number average molecular weight (M-n) and weight average molecular weight (M-w) are 63,300 and 133,800gmol(-1), respectively.
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