Kishore, K and Vasanthakumari, R (1987) Annealing Behavior of Isotactic Polybutene-1. In: Journal of Macromolecular Science: Pure and Applied Chemistry, 24 (1). pp. 33-47.
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The annealing behavior of isotactic polybutene-1 (PB-1) has been studied by differential scanning calorimetry and wide-angle x-ray diffraction. On annealing at 110°C, PB-1 yields thick crystals melting at -140°C which are mainly of Form I. An increase in the heat of fusion (ΔHf) and crystallinity is found for annealing times up to 12 h at 110°C; at longer times these properties decrease with increasing annealing time. The increases in ΔHf and crystallinity are attributed to increases in the lamellar thickness in the chain direction and in crystal perfection, and subsequent decreases to degradation of the polymer.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Macromolecular Science: Pure and Applied Chemistry |
| Publisher: | Taylor and Francis Group |
| Additional Information: | Copyright of this article belongs to Taylor and Francis Group. |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
| Date Deposited: | 20 Jul 2009 09:55 |
| Last Modified: | 20 Jul 2009 09:55 |
| URI: | http://eprints.iisc.ac.in/id/eprint/21597 |
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