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Microstructural analysis of polypropylenes produced with heterogeneous Ziegler-Natta catalysts

✍ Scribed by Ritva Paukkeri; Taito Väänänen; Arja Lehtinen

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
577 KB
Volume
34
Category
Article
ISSN
0032-3861

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Microtacticity of polypropylene fraction
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✍ Junting Xu; Yiqing Yang; Linxian Feng; Xiangming Kong; Shilin Yang 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 389 KB 👁 2 views

Polypropylene (PP) prepared with the MgC1z/TiC1,-A1Et3/PhzSi(OMe)2 catalyst system was fractionated by a preparative temperature rising elution fractionation (TREF) technique in the wide temperature range of room temperature to 13OoC. The results of fractionation showed that there were plural active