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By John M. Chalmers, Robert J. Meier

Written by means of specialist members from the tutorial and business sectors, this booklet offers conventional and sleek methods to polymer characterization and research. The emphasis is on pragmatics, challenge fixing and estate choice; real-world functions offer a context for key recommendations. The characterizations specialise in natural polymer and polymer product microstructure and composition.

  • Approaches molecular characterization and research of polymers from the perspective of problem-solving and polymer estate characterization, instead of from a method championing approach
  • Focuses on supplying a way to ascertaining the optimal strategy or technique(s) to resolve a problem/measure a estate, and thereby increase an analytical competence within the molecular characterization and research of real-world polymer products
  • Provides historical past on polymer chemistry and microstructure, discussions of polymer chain, morphology, degradation, and product failure and additive research, and considers the assisting roles of modeling and high-throughput analysis

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Additional resources for Comprehensive Analytical Chemistry, Molecular Characterization and Analysis of Polymers

Example text

Meier characterisation or analysis tool according to the problem solving circumstances. The reader will be able to obtain experts’ overviews of the range of tools, and their strengths, convenience of use and limitations, necessary to characterise or analyse the molecular structure, composition and properties of polymers and their formulated products. REFERENCES 1 I. Ando and T. Asakura, Solid State NMR of Polymers, Elsevier, Amsterdam, 1998. 2 F. Bovey and P. Mirau, NMR of Polymers, Elsevier, Amsterdam, 1996.

Such terms are of importance particularly for polyethylene as they describe the only3 small ‘‘chemical’’ difference between technologically highly different low-density (LDPE) and linear lowdensity (LLDPE) polyethylenes. Except for polyethylene, the distinction between LCB and SCB is somewhat controversial as it can depend on several characteristics or even on the capacity of the characterisation method itself. From the branching point three or more chains can arise. This depends on the so-called ‘‘functionality’’ of the ‘‘monomer’’ at the branching point (the ‘‘branching unit’’).

From a nucleus, they are called ‘‘spherulites’’. Upon examination, they appear to be formed of ‘‘fibrils’’ growing from the nucleus. These fibrils include several lamellae most often linked by tie-molecules going from one lamella to its neighbour. In semi-crystalline polymers, ordered structures appear at different dimensional levels 1. 2. 3. 4. the the the the crystal cell lamella fibril spherulite. Such a complex microstructure is illustrated in Figure 7. 2 Linear homopolymer chains are obtained upon linking chemically identical units exclusively at both ends.

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