Polymer physical principles

These researchers have pointed out that the basic principles of polymer physics apply to tackified elastomers, such as natural rubber. Thus the Tg relationship provided by the Fox-Flory equation applies ... 

The underlying physical principles of NMR have been established and are well understood.8 Applications of both solid- and solution-state NMR spectroscopy can be found in many different disciplines. It is routinely used in structural elucidation of organic and inorganic compounds, polymers, and biomolecules (e.g., proteins, nucleic acids, and carbohydrates). Additionally, NMR can be used to study molecular interactions (e.g., protein-protein and protein-ligand), molecular dynamics, and chemical reactions. It has also been used extensively in medical research and imaging (magnetic resonance imaging). 

Device motivation for interface studies, and Optical absorption and emission in conjugated oligomers and polymers. The principles of device physics of metal insulator field-effect transistors (MISFETs) and light emitting diodes (LEDs) are oudined mainly as motivation for the contents of the chapters which follow, but also to point out certain features relevant to developing an understanding of the nature of the polymer-metal interface (chapters 5 and 6). The basic principles of electro-luminescence are reviewed here, at the level consistent with the aims of this work. 

Besides the different percolation threshold, polymer/fullerene and poly-mer/polymer bulk heteroj unctions obey similar physical principles, which will be discussed in the following. 

Elementary Steps in Polymer EL Operation Physical Principles There are five steps to consider electron or hole injection and transport, and recombination, shown schematically in Fig. 32. 

In the subsequent 20 years (1960-80), the main principles of modern polymer physics were developed. These include the Edwards model of the polymer chain and its confining tube (Chapters 7 and 9), the modern view of semidilute solutions established by des Cloizeaux and de Gennes (Chapter 5), and the reptation theory of chain diffusion developed by de Gennes (Chapter 9) that led to the Doi-Edwards theory for the flow properties of polymer melts. 

Fig. 7.4 To highlight a second tunable quality aspect of specially designed USCAs, the pressure stability against a geometry factor (inner diameter over the outer diameter) of capsules is plotted. This factor has been selected in order to compare the properties of small USCAs with commercially available glass capsules, which are usually larger (100-700 pm). The fact that both fitted lines are parallel proves that polymer and glass capsules follow the same physical principles. Just the modulus of elasticity of glass is about...

The Boltzmann superposition principle is one of the simplest but most powerful principles of polymer physics.2 We have previously defined the shear creep compliance as relating the stress and strain in a creep experiment. Solving equation (2-6) for strain gives... 

As early as 1980, P.G. de Gennes brilliantly presented the question, in the light of the new principles, in his book Scaling Concepts in Polymer Physics, but the authors wanted to study thoroughly the concepts and develop the calculations which led them to treat the various aspects of a more restricted subject. 

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