Structural Regularization in the Crystallization Process from the Glass or Melt of Poly(l-lactic Acid) Viewed from the Temperature-Dependent and Time-Resolved Measurements of FTIR and Wide-Angle/Small-Angle X-ray Scatterings

The double-focusing high-flux wiggler beamline dedicated to small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) at ELETTRA has gone into user operation recently. It has been designed specifically for time-resolved studies of non-crystalline and fibrous materials in the submillisecond time scale, and has been optimized for small-angle scattering measurements. An overview of the beamline status and of some representative results, highlighting the performance of the SAXS beamline, are given.

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Fast Nucleation and Growth of ZIF-8 Nanocrystals Monitored by Time-Resolved In Situ Small-Angle and Wide-Angle X-Ray Scattering

Angewandte Chemie International Edition ◽

10.1002/anie.201102071 ◽

2011 ◽

Vol 50 (35) ◽

pp. 8067-8071 ◽

Cited By ~ 129

Author(s):

Janosch Cravillon ◽

Christian A. Schröder ◽

Roman Nayuk ◽

Jeremie Gummel ◽

Klaus Huber ◽

...

Keyword(s):

Small Angle ◽

Nucleation And Growth ◽

Wide Angle ◽

Time Resolved ◽

X Ray ◽

X Ray Scattering ◽

Ray Scattering

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New Insight of Isothermal Melt Crystallization in Poly(aryl ether ether ketone) via Time-Resolved Simultaneous Small-Angle X-ray Scattering/Wide-Angle X-ray Diffraction Measurements

Macromolecules ◽

10.1021/ma00124a032 ◽

1995 ◽

Vol 28 (20) ◽

pp. 6931-6936 ◽

Cited By ~ 24

Author(s):

Benjamin S. Hsiao ◽

Bryan B. Sauer ◽

Ravi K. Verma ◽

H. Gerhard Zachmann ◽

Soenke Seifert ◽

...

Keyword(s):

Small Angle ◽

Wide Angle ◽

Melt Crystallization ◽

Aryl Ether ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

X Ray Scattering ◽

Ether Ether Ketone ◽

Ether Ketone

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Simultaneous Time-Resolved Measurements of Weight and Small-Angle X-Ray Scattering of Heat- and Pressure-Treated Egg White during Gel-to-Glasslike Transition

Japanese Journal of Applied Physics ◽

10.1143/jjap.32.l1439 ◽

1993 ◽

Vol 32 (Part 2, No. 10A) ◽

pp. L1439-L1440 ◽

Cited By ~ 3

Author(s):

Haruichi Kanaya ◽

Kazuhiro Hara ◽

Eisei Takushi ◽

Kazumi Matsushige

Keyword(s):

Small Angle ◽

Egg White ◽

Time Resolved ◽

X Ray ◽

X Ray Scattering ◽

Time Resolved Measurements ◽

Ray Scattering

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Microstructure and Phase Separation of Pekk, Pekk and their Blends

MRS Proceedings ◽

10.1557/proc-461-33 ◽

1996 ◽

Vol 461 ◽

Author(s):

Wu. Wang ◽

Jerold M. Schultz ◽

Benjamin S. Hsiao

Keyword(s):

Phase Separation ◽

Small Angle ◽

Wide Angle ◽

Phase Growth ◽

Unit Cell Parameters ◽

Two Phase ◽

Time Resolved ◽

X Ray ◽

Cell Parameters ◽

X Ray Scattering

ABSTRACTMicrostructures of PEEK|PEKK blends at both structural and lamellar levels were studied using simultaneously time-resolved small-angle and wide-angle x-ray scattering (SAXS and WAXS) with synchrotron radiations. Lamellar dimensions and unit cell parameters were determined, and phase separation within the blends were observed. A suitable two-phase growth model is proposed. It is concluded that when crystallized from the melt, PEEK and PEKK lamellae formed in separate lamellar bundles within a common spherulite.

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