Crystallography of the polymethylene chain : an inquiry into the structure of waxes /
By considering the solid state packing of linear chain wax components, this book aims at understanding three things: firstly, which modifications of molecular components are allowed for maintaining stable solid solutions; secondly, what happens when stability conditions are traversed and fractionati...
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| Format: | eBook |
| Language: | English |
| Language Notes: | English. |
| Published: |
New York :
Oxford University Press,
2005.
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| Series: | International Union of Crystallography monographs on crystallography ;
17. |
| Subjects: | |
| Online Access: | Connect to the full text of this electronic book |
Table of Contents:
- 1 Polydispersity and the paraffin chain-statement of the problem; 1.1 Importance; 1.2 Binary solid state of n-paraffins: early descriptions; 1.2.1 Polymorphism; 1.2.2 Simple phase diagrams; 1.2.3 Stability conditions for binary solid solutions of linear molecules; 1.2.4 Experimental variances to Kitaigorodskii's rules for paraffin solid solutions; 1.3 Summary; 2 Layer packing of polymethylene chains; 2.1 The methylene subcell and layer packing-theoretical considerations; 2.2 Observed methylene subcells; 2.3 Layer stacking; 2.4 Summary.
- 3 Crystal structures and phase transitions of the paraffins3.1 Introduction; 3.2 Crystal structures of lower chain n-paraffins; 3.3 Triclinic crystal structure of longer even-chain n-paraffins; 3.4 Monoclinic crystal structure of the even-chain n-paraffins; 3.5 Orthorhombic crystal structure of the even-chain n-paraffins; 3.6 "Nematocrystalline" modifications; 3.7 Thermodynamically stable orthorhombic crystal structure of the odd-chain n-paraffins; 3.8 Orthorhombic crystal structure of melt-crystallized odd-chain n-paraffins; 3.9 Branched n-paraffins; 3.10 Aromatic substitution of n-paraffins.
- 3.11 Polyethylene and its alkane models3.12 Summary; 4 Thermotropic disorder in n-paraffin crystals; 4.1 Introduction; 4.2 Diffraction and microscopical studies of high temperature chain packing; 4.3 Vibrational spectroscopic measurements of n-paraffins at high temperature; 4.4 Summary; 5 Binary and multicomponent solids of n-paraffins; 5.1 Introduction; 5.2 Solid solutions; 5.2.1 Binary combinations; 5.2.2 Multicomponent solutions; 5.3 Miscibility gap; 5.3.1 Binary combinations; 5.3.2 Multicomponent combinations; 5.4 Eutectic solids-partial co-solubility; 5.5 Eutectic solids-no co-solubility.
- 5.6 Effect of chain-folding on phase separation5.7 Conclusions; 5.8 Summary; 6 Some functional substitutions in n-paraffins; 6.1 Introduction; 6.2 Perfluoroalkanes-crystal structure; 6.3 Perfluoroalkanes-binary phases; 6.4 Heteroatoms in chains-crystal structures; 6.5 Heteroatom substitutions-binary phases; 6.6 Unsaturation; 6.7 Summary; 7 Lipid alcohols; 7.1 Introduction; 7.2 Crystal structure of primary fatty alcohols; 7.2.1 Tilted layer polymorphs; 7.2.2 Rectangular layer polymorph; 7.2.3 Rotator phases; 7.3 Crystal structures of other fatty alcohols and thiols.
- 7.4 Binary phase behavior of fatty alcohols7.5 Crystal structure of cholesterol; 7.6 Thermotropic behavior of cholesterol; 7.7 Examples of binary phase behavior of cholesterol with simple derivatives; 7.8 Summary; 8 The fatty acids; 8.1 Introduction; 8.2 Crystal structures of normal chain fatty acids; 8.2.1 Even-chain acids; 8.2.2 Odd-chain acids; 8.2.3 Very short fatty acids; 8.2.4 Heteroatom substitution; 8.3 Crystal structure of unsaturated fatty acids; 8.4 Crystal structure of cyclopropane-containing fatty acids; 8.5 Crystal structures of branched-chain fatty acids.