Isothermal Crystallization and Melting of Isotactic Polypropylene Analyzed by Time- and Temperature-Dependent Small-Angle X-ray Scattering Experiments

2000 ◽  
Vol 33 (14) ◽  
pp. 5204-5214 ◽  
Author(s):  
M. Iijima ◽  
G. Strobl
Keyword(s):  
Isotactic Polypropylene ◽  
Small Angle ◽  
Isothermal Crystallization ◽  
Temperature Dependent ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Time-resolved isothermal crystallization of absorbable PGA-co-PLA copolymer by synchrotron small-angle X-ray scattering and wide-angle X-ray diffraction

Polymer ◽  
2001 ◽  
Vol 42 (21) ◽  
pp. 8965-8973 ◽  
Author(s):  
Zhi-Gang Wang ◽  
Xuehui Wang ◽  
Benjamin S. Hsiao ◽  
Saša Andjelić ◽  
Dennis Jamiolkowski ◽  
...  
Keyword(s):  
Small Angle ◽  
Isothermal Crystallization ◽  
Wide Angle ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Temperature-dependent small-angle x-ray scattering from poly(vinylidene fluoride)

1980 ◽  
Vol 51 (10) ◽  
pp. 5508 ◽  
Author(s):  
J. M. Schultz ◽  
J. S. Lin ◽  
R. W. Hendricks ◽  
R. R. Lagasse ◽  
R. G. Kepler
Keyword(s):  
Small Angle ◽  
Vinylidene Fluoride ◽  
Temperature Dependent ◽  
X Ray ◽  
X Ray Scattering ◽  
Poly Vinylidene Fluoride ◽  
Ray Scattering

scholarly journals Supramolecular Dimerization in a Polymer Melt from Small-Angle X-ray Scattering and Rheology: A Miscible Model System

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 880
Author(s):  
Mariapaola Staropoli ◽  
Margarita Kruteva ◽  
Jürgen Allgaier ◽  
Andreas Wischnewski ◽  
Wim Pyckhout-Hintzen
Keyword(s):  
Hydrogen Bonding ◽  
Small Angle ◽  
Full Range ◽  
Polymer Melt ◽  
Self Healing ◽  
Temperature Dependent ◽  
Base Pairs ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

We present a structural and dynamic study on the simplest supramolecular hetero-association, recently investigated by the authors to prepare architectural homogeneous structures in the melt state, based on the bio-inspired hydrogen-bonding of thymine/diaminotriazine (thy–DAT) base-pairs. In the combination with an amorphous low Tg poly(butylene oxide) (PBO), no micellar structures are formed, which is expected for nonpolar polymers because of noncompatibility with the highly polar supramolecular groups. Instead, a clear polymer-like transient architecture is retrieved. This makes the heterocomplementary thy–DAT association an ideal candidate for further exploitation of the hydrogen-bonding ability in the bulk for self-healing purposes, damage management in rubbers or even the development of easily processable branched polymers with built-in plasticizer. In the present work, we investigate the temperature range from Tg + 20 °C to Tg + 150 °C of an oligomeric PBO using small-angle X-ray scattering (SAXS) and linear rheology on the pure thy and pure DAT monofunctionals and on an equimolar mixture of thy/DAT oligomers. The linear rheology performed at low temperature is found to correspond to fully closed-state dimeric configurations. At intermediate temperatures, SAXS probes the equilibrium between open and closed states of the thy–DAT mixtures. The temperature-dependent association constant in the full range between open and closed H-bonds and an enhancement of the monomeric friction coefficient due to the groups is obtained. The thy–DAT association in the melt is more stable than the DAT–DAT, whereas the thy–thy association seems to involve additional long-lived interactions.

Temperature-Dependent Atomic Models of Detergent Micelles Refined against Small-Angle X-Ray Scattering Data

2018 ◽  
Vol 130 (20) ◽  
pp. 5737-5741
Author(s):  
Miloš T. Ivanović ◽  
Linda K. Bruetzel ◽  
Jan Lipfert ◽  
Jochen S. Hub
Keyword(s):  
Small Angle ◽  
Scattering Data ◽  
Temperature Dependent ◽  
X Ray ◽  
Atomic Models ◽  
X Ray Scattering ◽  
Detergent Micelles ◽  
Ray Scattering

Portable mini-chamber for temperature dependent studies using small angle and wide angle x-ray scattering

2018 ◽  
Author(s):  
Arun Singh Dev ◽  
Dileep Kumar ◽  
Satish Potdar ◽  
Pallavi Pandit ◽  
Stephan V. Roth ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Temperature Dependent ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Time-resolving small angle X-Ray scattering analysis of melt crystallization of mixtures of regular and irregular isotactic polypropylene samples

Polymer ◽  
2021 ◽  
Vol 215 ◽  
pp. 123411
Author(s):  
Finizia Auriemma ◽  
Odda Ruiz de Ballesteros ◽  
Giovangiuseppe Giusto ◽  
Rocco Di Girolamo ◽  
Anna Malafronte ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Small Angle ◽  
Melt Crystallization ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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