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Analysis of polyolefin blends by crystallization analysis fractionation
Author(s) -
Pasch Harald,
Brüll Robert,
Wahner Udo,
Monrabal Benjamin
Publication year - 2000
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/1439-2054(20000601)279:1<46::aid-mame46>3.0.co;2-1
Subject(s) - polyolefin , materials science , crystallization , low density polyethylene , high density polyethylene , fractionation , polyethylene , polymer , polymer blend , crystallization of polymers , thermal analysis , polymer chemistry , chemical engineering , composite material , copolymer , organic chemistry , thermodynamics , chemistry , thermal , layer (electronics) , engineering , physics
Abstract Crystallization analysis fractionation (CRYSTAF) is a new technique for the analysis of the composition of polyolefin blends. CRYSTAF fractionates blend components of different crystallizability by slow cooling of a polymer solution. During the crystallization step the concentration of the polymer solution is monitored as a function of temperature. Different from DSC, blends of HDPE, LDPE and PP are separated into the components and quantitative information can be obtained directly from the crystallization curves. Even very low amounts of one component in PE/PP and HDPE/LDPE blends can be quantified with good accuracy. The applicability of the technique for the analysis of Ziegler‐Natta, and metallocene‐catalyzed polyolefins is demonstrated and the analysis of waste plastics fractions is discussed.