X-ray small-angle scattering of bulk polyethylene

Vonk, C. G.; Kortleve, G.

doi:10.1007/bf02086052

Cited by 305 publications

(205 citation statements)

References 7 publications

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“…This is proportional to the second derivative of the onedimensional correlation function (Vonk & Kortleve, 1967). The IDF is composed from a series of distance distributions, hi(x ).…”

Section: Evaluation Of Discrete Scattering Neglecting Void Scatteringmentioning

confidence: 99%

Studying the Microstructure of Unaged and Aged PVDF by Small- and Wide-Angle X-ray Scattering

Stribeck¹,

Buchner²

1997

J Appl Cryst

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A layer from plasticized poly(vinylidene fluoride) (PVDF) was aged by exposing one of its faces to an aggressive fluid at elevated temperature and pressure. From visual inspection the aged material appeared not to be homogeneous. Therefore, samples from three distinguishable regions were compared with a sample cut from the virgin material by studying their small-and wide-angle X-ray scattering (SAXS and WAXS). The results show that plasticizer has vanished from the aged material, the crystalline layer thickness distribution has narrowed, amorphous lamellae are collapsed and voids have been created. Within the aged material the number of voids varies: there are more at the inner surface and fewer at the outer surface beneath the rods of a supporting metal grid. Based on the results of this study and theoretical considerations, a method for the quantitative description of the ageing process is proposed, which only requires a simple kind of SAXS measurement.

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“…This is proportional to the second derivative of the onedimensional correlation function (Vonk & Kortleve, 1967). The IDF is composed from a series of distance distributions, hi(x ).…”

Section: Evaluation Of Discrete Scattering Neglecting Void Scatteringmentioning

confidence: 99%

Studying the Microstructure of Unaged and Aged PVDF by Small- and Wide-Angle X-ray Scattering

Stribeck¹,

Buchner²

1997

J Appl Cryst

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“…Several publications describe the search for a simple graphical analysis [22,159,[162][163][164] of the 1D correlation function by means of a geometrical construction. It is the drawback of all such methods that polydispersity and heterogeneity are not considered.…”

Section: And the Analysis Of Scattering Patternsmentioning

confidence: 99%

“…The common graphical evaluation methods try to transfer these features of the ideal correlation function of an ideal lattice to real correlation functions of polydisperse soft matter that are computed from experimental data. The valley-depth method has first been devised by VONK [159]: whenever a flat minimum is found in a real correlation function, the distortion is weak and the linear crystallinity can significantly be determined from the properly normalized correlation function by application of Eq. (8.68).…”

Section: And the Analysis Of Scattering Patternsmentioning

confidence: 99%

“…In practice, even a more severe damping of the correlation function close to the origin is frequently accepted in order to compute the correlation function with little effort of evaluation [159]: POROD's law is not evaluated (cf. p. 124, Fig.…”

Section: And the Analysis Of Scattering Patternsmentioning

confidence: 99%

“…The method which has been proposed by Goderis et al [162] is based on the implicit assumption that the first zero, x 0 , of the real correlation function is shifted by the same factor as is the position of its first maximum,L app . The idea is already described in the first paper of VONK and KORTLEVE ( [159], p. 22) as a method to retrieve fit parameters. In their second paper ( [160], p. 128) the authors state that inaccurate values are returned, if the found linear crystallinity is between 0.35 and 0.65.…”

Section: And the Analysis Of Scattering Patternsmentioning

confidence: 99%

See 2 more Smart Citations

X-Ray Scattering of Soft Matter

Stribeck¹

2007

Springer Laboratory

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Recurrence of hodgkin's disease after indium-111 and yttrium-90 labeled antiferritin administration

Vriesendorp

Quadri

Andersson

et al. 1997

Cancer

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RESULTS.In single-agent yttrium-90 antiferritin studies, a response rate of more 2 Arlington Cancer Center, Arlington, Texas.than 60% was found, with an average response duration of 6 months. One-third of the patients had recurrences in previously uninvolved areas. Repeat indium antiferritin scintigraphy allowed for the selection of new radiation fields for recurrences. In-field disease control was obtained for a median of 8 months, but new recurrences in new areas occurred. Chemotherapy or radiation therapy given immediately before antiferritin decreased tumor targeting with indium-111 labeled antiferritin. CONCLUSIONS.Recurrences after radiolabeled antiferritin treatment are not due to radioresistant Hodgkin's disease. In contrast, Hodgkin's disease less than 1 cm in diameter is not targeted and not controlled by radiolabeled antiferritin. New multimodality regimens with a higher therapeutic ratio are needed for treatment of Hodgkin's disease with curative intent. Radiolabeled antiferritin can be incorporated in such regimens to secure better control of bulky Hodgkin's disease (ú1 cm in diameter), but it should be given before chemotherapy or radiation therapy. can be assessed and a new therapy can be optimized only if both tumor response and normal tissue toxicity can be measured in the

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X-ray small-angle scattering of bulk polyethylene

Cited by 305 publications

References 7 publications

Studying the Microstructure of Unaged and Aged PVDF by Small- and Wide-Angle X-ray Scattering

Studying the Microstructure of Unaged and Aged PVDF by Small- and Wide-Angle X-ray Scattering

X-Ray Scattering of Soft Matter

Recurrence of hodgkin's disease after indium-111 and yttrium-90 labeled antiferritin administration

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