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1H magnetic relaxation times in isotactic polypropylene crystallized at high temperature. Effect of molecular weight

✍ Scribed by Hiroshi Tanaka; Yoshinori Inoue

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
353 KB
Volume
31
Category
Article
ISSN
0959-8103

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Effects of microtacticity on 1H and 13C
Effects of microtacticity on 1H and 13C magnetic relaxation times of isotactic polypropylene crystallized at high temperature
✍ Hiroshi Tanaka; Yoshinori Inoue 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 307 KB

Temperature dependence of ~H spin-lattice, Tt (H), and spin-spin, T2(H ), relaxation times of isotactic polypropylene samples with different microtacticity was investigated. The samples were crystallized at high temperature (155°C) for a long time (200hr). The sample with high microtacticity (mmmm =