Polymer Analysis Polymer Theory pp 1-54

Part of the Advances in Polymer Science book series (POLYMER, volume 182)

Fractionation of Semicrystalline Polymers by Crystallization Analysis Fractionationand Temperature Rising Elution Fractionation

  • Siripon Anantawaraskul
  • João B. P. Soares
  • Paula M. Wood-Adams
Chapter

Abstract

Crystallization analysis fractionation (Crystaf) and temperature rising elution fractionation (Tref) are analytical techniques for determining the distribution of chain crystallizabilities of semicrystalline polymers. These techniques fractionate polymer chains on the basis of the differences in their chain microstructures that affect their crystallizabilities in dilute solutions. Both techniques can be used to estimate the chemical composition distribution of copolymers and the tacticity distribution of homopolymers. This information is crucial for understanding polymerization mechanisms and constructing structure--property relationships. This review covers the theoretical aspects of both techniques, describes their basic operation procedures and applications, and discusses the mathematical models proposed for Crystaf and Tref.

Chemical composition distribution Composition heterogeneity Crystallization analysis fractionation Polyethylene Polyolefins Temperature rising elution fractionation 

Abbreviations

A-Tref

Analytical temperature rising elution fractionation

CC

Average comonomer content

CCD

Chemical composition distribution

CR

Cooling rate

Crystaf

Crystallization analysis fractionation

DSC

Differential scanning calorimetry

FTIR

Fourier transform IR

HDPE

High-density polyethylene

LDPE

Low-density polyethylene

LLDPE

Linear low-density polyethylene

MWD

Molecular weight distribution

P-Tref

Preparative temperature rising elution fractionation

SEC

Size-exclusion chromatography

SNA

Successive nucleation/annealing

SSF

Successive solution fractionation

Tref

Temperature rising elution fractionation

ΔTC

Temperature difference between Crystaf peak temperatures

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Siripon Anantawaraskul
    • 1
    • 3
  • João B. P. Soares
    • 2
  • Paula M. Wood-Adams
    • 4
  1. 1.Department of Chemical EngineeringMcGill UniversityMontrealCanada
  2. 2.Department of Chemical EngineeringUniversity of WaterlooWaterloo, ONCanada
  3. 3.Department of Chemical EngineeringKasetsart UniversityBangkokThailand
  4. 4.Department of Mechanical and Industrial EngineeringConcordia UniversityMontrealCanada

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