𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mathematical modeling of crystallization analysis fractionation (Crystaf) of polyethylene

✍ Scribed by Siripon Anantawaraskul; João B. P. Soares; Preechathorn Jirachaithorn; Jumras Limtrakul

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
536 KB
Volume
44
Category
Article
ISSN
0887-6266

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Four polyethylene samples (PE) with different molecular weight distributions (MWD) were analyzed by crystallization analysis fractionation (Crystaf) at several cooling rates to investigate the effect of MWD and cooling rate on their Crystaf profiles. Using these results, we developed a mathematical model for Crystaf that considers crystallization kinetic effects, which are ignored in all previous Crystaf models. The Crystaf model we proposed can fit the experimental Crystaf profiles of the 4 polyethylene resins very well. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 2749–2759, 2006

📜 SIMILAR VOLUMES

Mathematical Modeling and Optimization o
Mathematical Modeling and Optimization of Run Parameters of Crystallization Analysis Fractionation (CRYSTAF)
✍ Michael Fischlschweiger; Nicolai Aust; Eduard R. Oberaigner; Cornelia Kock 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 690 KB

## Abstract Blends of a random poly(propylene) copolymer with different types of polyethylene were used to develop a sample independent statistic mathematical model which describes the quality of phase separation of polymer blends obtained by CRYSTAF. By coupling the abstract model with experimenta

Cocrystallization of Blends of Ethylene/
Cocrystallization of Blends of Ethylene/1-Olefin Copolymers: An Investigation with Crystallization Analysis Fractionation (Crystaf)
✍ Siripon Anantawaraskul; João B. P. Soares; Paula M. Wood-Adams 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 150 KB

## Abstract **Summary:** Crystallization analysis fractionation (Crystaf) is a technique for estimating the chemical composition distribution (CCD) of semi‐crystalline copolymers. Cocrystallization may happen during Crystaf analysis, affecting Crystaf profiles and leading to misinterpretation of th

Characterization of polypropylene–polyet
Characterization of polypropylene–polyethylene blends by temperature rising elution and crystallization analysis fractionation
✍ Benjamín Monrabal; Pilar del Hierro 📂 Article 📅 2010 🏛 Springer 🌐 English ⚖ 366 KB

The introduction of single-site catalysts in the polyolefins industry opens new routes to design resins with improved performance through multicatalyst-multireactor processes. Physical combination of various polyolefin types in a secondary extrusion process is also a common practice to achieve new p