By S. F. Sun(auth.)
Integrating insurance of polymers and organic macromolecules right into a unmarried textual content, Physical Chemistry of Macromolecules is punctiliously based to supply a transparent and constant source for novices and pros alike. the fundamental wisdom of either biophysical and actual polymer chemistry is roofed, besides very important phrases, easy structural houses and relationships.
This e-book comprises finish of bankruptcy difficulties and references, and in addition:
- Enables clients to enhance easy wisdom of biophysical chemistry and actual polymer chemistry.
- Explores absolutely the rules of macromolecular chemistry, tools for making a choice on molecular weight and configuration of molecules, the constitution of macromolecules, and their separations.Content:
Chapter 1 creation (pages 1–18):
Chapter 2 Syntheses of Macromolecular Compounds (pages 19–51):
Chapter three Distribution of Molecular Weight (pages 52–66):
Chapter four Macromolecular Thermodynamics (pages 67–95):
Chapter five Chain Configurations (pages 96–126):
Chapter 6 Liquid Crystals (pages 127–149):
Chapter 7 Rubber Elasticity (pages 150–164):
Chapter eight Viscosity and Viscoelasticity (pages 165–197):
Chapter nine Osmotic strain (pages 198–222):
Chapter 10 Diffusion (pages 223–242):
Chapter eleven Sedimentation (pages 243–266):
Chapter 12 Optical Rotatory Dispersion and round Dichroism (pages 267–283):
Chapter thirteen High?Performance Liquid Chromatography and Electrophoresis (pages 284–319):
Chapter 14 mild Scattering (pages 320–347):
Chapter 15 Fourier sequence (pages 348–370):
Chapter sixteen Small?Angle X?Ray Scattering, Neutron Scattering, and Laser gentle Scattering (pages 371–398):
Chapter 17 digital and Infrared Spectroscopy (pages 399–435):
Chapter 18 Protein Molecules (pages 436–454):
Chapter 19 Nuclear Magnetic Resonance (pages 455–496):
Chapter 20 X?Ray Crystallography (pages 497–534):
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Additional info for Physical Chemistry of Macromolecules: Basic Principles and Issues, Second Edition
Sample text
1 Complications Free-radical polymerization often involves complications. Complications may occur during propagation, chain transfer, and chain termination. Complications in Propagation When there is more than one unsaturated bond in the monomers, propagation can occur in a different mechanism, thereby affecting the chain structure. For example, in the synthesis of polybutadiene, polymerization can lead to three different products: 1 nCH2 CH CH CH2 2 CH2 CH 1,2 addition CH CH2 3 4 n 1 CH2 2 3 H C C CH2 4 CH2 trans 1,4 addition n CH2 cis 1,4 addition C C H H n The three polymers have different properties.
A higher temperature favors 22 SYNTHESES OF MACROMOLECULAR COMPOUNDS 1,2 polymers; at low temperature the products are predominantly 1,4 repeating units. Complications in Chain Transfer The reactivity of a radical can be transferred to the monomer, polymer, or solvent or even to the initiator, as the following examples show: Transfer to initiator: O Mn + O O C O O C Mn O + O C C O Transfer to monomer: H Mn + CH2 C X MnH + CH2 C X Transfer to solvent: Mn + CCl4 MnCl + Cl3C Transfer to polymer: Mn + Mm Mn + M m Chain transfer is the termination of a polymer chain without the destruction of the kinetic chain.
1 Critical micelle concentration. MACROMOLECULES 3 The surface activity of this detergent causes a protein to be unfolded to a linear polypeptide. It destroys the shape of the protein molecule, rendering a spherical molecule to a random coil. SDS binds to many proteins. 5 mM. Above this level SDS starts self-association and binding is reduced. 2 mM, SDS forms micelles, with an aggregation number of 62 and a micellar molecular weight of 18,000. Liposome is believed to be one of the best devices for the controlled release of drugs.