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- Title
TG of polytetrahydrofuran/ isophoronediisocyanate reaction products.
- Authors
Kojima, T.; Inoue, E.; Tsuchiya, M.; Ishimaru, K.
- Abstract
TG, swelling, and viscometric studies are presented for the residues, PTHF/IPDI polymer networks, and the extracts, the linear polymers and unreacted IPDI, after Soxhlet extraction of PTHF/IPDI reaction products. The products are obtained by reacting PTHF with 650, 1400, (2×650+1×2900), or 2900 of molecular mass with IPDI at various concentrations in bulk. The results on the swelling and the viscosity experiments suggest that the PTHF/IPDI reaction products have a usual expectable structure. All the TG curves are a double stage curve. The initial stage and the last stage seem to reflect decomposition of PTHF chains and vaporization of the remainder, IPDI, respectively. These are analyzed by a trial-and-error construction, supposing double event behavior. The values of ratio of mass loss associated with the initial event, W01, to the mass loss associated with the last event, W02, are smaller than the expectable those. This suggests that Event 2 involves vaporization of the decomposition products of PTHF moieties bonded to IPDI in addition to vaporization of IPDI.
- Subjects
POLYMER networks; THERMOGRAVIMETRY; POLYMERS; THERMAL analysis; CROSSLINKED polymers; GRAVIMETRIC analysis
- Publication
Journal of Thermal Analysis & Calorimetry, 2003, Vol 72, Issue 2, p737
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1023/A:1024518825604