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Neutron Scattering from Polymers

Polymers and Colloids Group, Cavendish Laboratory, University of Candnidge, Madingley Road, Cambridge, CBS OHE, UK [Pg.325]

In the space of a few pages it would be impossible to provide a full description of the different investigations of polymers that can be made, or even have already been made, using neutron techniques. The intention is rather to provide an introduction to the methods. Those readers who may wish to exploit the special advantages of neutrons will be able to assess the feasibility of experiments and find some guide to the recent literature. The description of published work will necessarily be selective and will try to reflect some of the wide range of studies that are now in progress. [Pg.325]

There are several reviews of both the technique of neutron scattering and its application to the study of polymers. Although both provide little information about work on polymers, readers interested in a thorough description of the theory of neutron scattering should refer to the books by Lovesey [1] and Squires [2]. Reviews and books concerning neutron studies of polymers can be divided into those that are concerned with the technique [e.g. 3-5] and those that describe results, often in particular areas of the topic such as copolymers [6], networks [7], polymer motion [8-11], semi-crystalline polymers [12], polymer colloids [13] and biopolymers [14]. [Pg.325]


The polymer concentration profile has been measured by small-angle neutron scattering from polymers adsorbed onto colloidal particles [70,71] or porous media [72] and from flat surfaces with neutron reflectivity [73] and optical reflectometry [74]. The fraction of segments bound to the solid surface is nicely revealed in NMR studies [75], infrared spectroscopy [76], and electron spin resonance [77]. An example of the concentration profile obtained by inverting neutron scattering measurements appears in Fig. XI-7, showing a typical surface volume fraction of 0.25 and layer thickness of 10-15 nm. The profile decays rapidly and monotonically but does not exhibit power-law scaling [70]. [Pg.402]

Roe, R.J., X-Ray and Neutron Scattering from Polymers, Academic Press New York, 2001. [Pg.515]

J.S. Higgins and H. Benoit, Neutron Scattering from Polymers, Clarendon Press, Oxford, 1994. [Pg.383]

Small Angle Neutron Scattering from Polymer Networks... [Pg.257]

Higgins, J.S. Benoit, H. Neutron Scattering from Polymers Clarendon Press Oxford, 1994. [Pg.245]

There is an enormous body of work on quasielastic neutron scattering from polymers [1,2]. There is a smaller literature on neutron vibrational spectroscopy of polymers but this has had a significant impact on the characterisation of these materials. Crystalline or semi-crystalline polymers are the most important class of polymers commercially. The most-studied and technologically most important of these is polyethylene and this will be considered in some depth and we will highlight the use of the n-alkanes as model compounds ( 10.1.2). We will then see how these concepts can be transferred to polypropylene ( 10.1.3), nylon ( 10.1.4), and conducting polymers ( 10.1.5). Non-crystalline polymers ( 10.2) have been much-less studied by INS. As examples, we will consider polydimethylsiloxane ( 10.2.1) and advanced composites ( 10.2.2). [Pg.427]

SMALL ANGLE NEUTRON SCATTERING FROM POLYMERS IN SUPERCRITICAL CARBON DIOXIDE... [Pg.45]

G. D. Wignall, Neutron scattering from polymers, in Encyclopedia of Polymer Science and Engineering, Martin Grayson and J. Kroschwitz,eds., John Wiley Sons, Inc., New York (1987). [Pg.53]

If the isotope has no spin, then < b > = < b as < b> = b and there is no incoherent scattering for neutrons. Only coherent scattering contains information on the stmcture of the sample. The incoherent cross section contains no information on interference effects and forms an isotropic (flat) background which must be subtracted off in SANS stmctural investigations. While most of the atoms encountered in neutron scattering from polymers are mainly coherent scatterers (e.g., carbon, oxygen, deuterium), there is one important exception [8,22,23]. In the case of hydrogen (H )... [Pg.409]

Miggins JS, Benoit M. Neutron scattering from polymers. Oxford Clarendon Press 1994. [Pg.119]


See other pages where Neutron Scattering from Polymers is mentioned: [Pg.315]    [Pg.113]    [Pg.116]    [Pg.10]    [Pg.469]    [Pg.532]    [Pg.325]    [Pg.327]    [Pg.329]    [Pg.331]    [Pg.333]    [Pg.335]    [Pg.337]    [Pg.339]    [Pg.341]    [Pg.343]    [Pg.346]   


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