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Structure supermolecular

The introduction of large gas phase volumes into the polymer alters the physical characteristics of the material volume weight, permeability to fluids and gases, and physico-mechanical properties. Moreover, the properties of the polymer matrix itself are changed (owing to orientation effects, supermolecular structure of the polymer in the walls, ribs and tension bars of cells), which drives up the value of specific strength on impact, and results in anisotropy of elasticity. [Pg.100]

Fig. 3a-e. Supermolecular structures of polymers crystallized in various force fields a structure of the shish-kebab type, b structure formed during crystallization in a capillary with a conical inlet and c structure of a polymer crystallized at hydrostatic compression at 4 x 108 Pa... [Pg.215]

Marikhin, V. A., Myasnikova, L. P. Supermolecular structure of polymers (in Russian), Leningrad Khimiya 1977... [Pg.244]

C. Carrageenan and gellan gum gelation mechanism and supermolecular structure... [Pg.222]

Development and Characterization of Solid State Molecular and Supermolecular Structure... [Pg.133]

What is meant by the term supermolecular structure when describing polymers ... [Pg.153]

Figure 15 Morphological map of linear polyethylene fractions. Plot of molecular weight against crystallization temperature. The types of supermolecular structures are represented by symbols. Patterns a, b and c represent spherulitic structures with deteriorating order from a to c. Patterns g and d represent rods or sheet-like structures whose breadth is comparable to their length g or display a different aspect ratio d. Pattern h represents randomly oriented lamellae. Neither h nor g patterns have azimuthal dependence of the scattering. Reproduced with permission from Ref. [223]. Copyright 1981 American Chemical Society. (See Ref. [223] for full details.) Note the pattern a is actually located as o in the figure this was an error on the original. Figure 15 Morphological map of linear polyethylene fractions. Plot of molecular weight against crystallization temperature. The types of supermolecular structures are represented by symbols. Patterns a, b and c represent spherulitic structures with deteriorating order from a to c. Patterns g and d represent rods or sheet-like structures whose breadth is comparable to their length g or display a different aspect ratio d. Pattern h represents randomly oriented lamellae. Neither h nor g patterns have azimuthal dependence of the scattering. Reproduced with permission from Ref. [223]. Copyright 1981 American Chemical Society. (See Ref. [223] for full details.) Note the pattern a is actually located as o in the figure this was an error on the original.
Figure 8.26 Illustration of supermolecular structure and pairwise relationships for isomeric SmCP phases is given. Figure 8.26 Illustration of supermolecular structure and pairwise relationships for isomeric SmCP phases is given.
Figure 8.27 Illustrations showing SmCsPA and SniCsP. supermolecular structures projected onto tilt plane and onto bow plane are given. Projections onto bow plane are meant to illustrate effective synclinic layer interface present in SmCsPA phase and corresponding anticlinic layer interface in SmCsPF phase, though both are synclinic in tilt plane. Figure 8.27 Illustrations showing SmCsPA and SniCsP. supermolecular structures projected onto tilt plane and onto bow plane are given. Projections onto bow plane are meant to illustrate effective synclinic layer interface present in SmCsPA phase and corresponding anticlinic layer interface in SmCsPF phase, though both are synclinic in tilt plane.
Fig. 25. Typical forms of reciprocal particle scattering functions for systems containing supermolecular structure30, 108).- (a) small individual macromolecules and a small amount of supermolecular structure sometimes allowing extrapolation to unity (and hence I/M) from moderate -high 0, as indicated, (b) large individual macromolecules or small individual macromolecules but high content of supermolecular structure... Fig. 25. Typical forms of reciprocal particle scattering functions for systems containing supermolecular structure30, 108).- (a) small individual macromolecules and a small amount of supermolecular structure sometimes allowing extrapolation to unity (and hence I/M) from moderate -high 0, as indicated, (b) large individual macromolecules or small individual macromolecules but high content of supermolecular structure...
Protein is an excellent natural nanomaterial for molecular machines. Protein-based molecular machines, often driven by an energy source such as ATP, are abundant in biology. Surfactant peptide molecules undergo self-assembly in solution to form a variety of supermolecular structures at the nanoscale such as micelles, vesicles, unilamellar membranes, and tubules (Maslov and Sneppen, 2002). These assemblies can be engineered to perform a broad spectrum of functions, including delivery systems for therapeutics and templates for nanoscale wires in the case of tubules, and to create and manipulate different structures from the same peptide for many different nanomaterials and nanoengineering applications. [Pg.185]

It can also be expected that any calculations of long chain branching frequency (12,13) will be severely compromised by errors resulting from supermolecular structures. This is because the frequency of long branches resulting from chain transfer to... [Pg.276]


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