Lamellae evolution of poly(butylene succinate-co-terephthalate) copolymer induced by uniaxial stretching and subsequent heating

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64625-64633 ◽  
Author(s):  
Zhenzhen Wei ◽  
Ruixin Lun ◽  
Xueqin Lou ◽  
Feng Tian ◽  
Jinyou Lin ◽  
...  
Keyword(s):  
Small Angle ◽  
Structural Evolution ◽  
Butylene Succinate ◽  
Uniaxial Stretching ◽  
X Ray ◽  
X Ray Scattering ◽  
Subsequent Heating ◽  
Biodegradable Poly ◽  
Ray Scattering

The structural evolution of biodegradable poly(butylene succinate-co-terephthalate) copolymer was investigated during the uniaxial stretching and following heating processes via in situ small-angle X-ray scattering.

scholarly journals In situultra-small-angle X-ray scattering study under uniaxial stretching of colloidal crystals prepared by silica nanoparticles bearing hydrogen-bonding polymer grafts

IUCrJ ◽  
2016 ◽  
Vol 3 (3) ◽  
pp. 211-218 ◽  
Author(s):  
Ryohei Ishige ◽  
Gregory A. Williams ◽  
Yuji Higaki ◽  
Noboru Ohta ◽  
Masugu Sato ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Small Angle ◽  
Repulsive Interaction ◽  
Face Centered Cubic ◽  
Uniaxial Stretching ◽  
X Ray ◽  
Grafted Polymer ◽  
X Ray Scattering ◽  
Ray Scattering

A molded film of single-component polymer-grafted nanoparticles (SPNP), consisting of a spherical silica core and densely grafted polymer chains bearing hydrogen-bonding side groups capable of physical crosslinking, was investigated byin situultra-small-angle X-ray scattering (USAXS) measurement during a uniaxial stretching process. Static USAXS revealed that the molded SPNP formed a highly oriented twinned face-centered cubic (f.c.c.) lattice structure with the [11−1] plane aligned nearly parallel to the film surface in the initial state. Structural analysis ofin situUSAXS using a model of uniaxial deformation induced by rearrangement of the nanoparticles revealed that the f.c.c. lattice was distorted in the stretching direction in proportion to the macroscopic strain until the strain reached 35%, and subsequently changed into other f.c.c. lattices with different orientations. The lattice distortion and structural transition behavior corresponded well to the elastic and plastic deformation regimes, respectively, observed in the stress–strain curve. The attractive interaction of the hydrogen bond is considered to form only at the top surface of the shell and then plays an effective role in cross-linking between nanoparticles. The rearrangement mechanism of the nanoparticles is well accounted for by a strong repulsive interaction between the densely grafted polymer shells of neighboring particles.

Structural Evolution of a Colloidal Crystal Fiber during Heating and Annealing Studied by in Situ Synchrotron Small Angle X-ray Scattering

Langmuir ◽  
2010 ◽  
Vol 26 (16) ◽  
pp. 13216-13220 ◽  
Author(s):  
Shanshan Hu ◽  
Jens Rieger ◽  
Zhiyong Yi ◽  
Jianqi Zhang ◽  
Xuelian Chen ◽  
...  
Keyword(s):  
Small Angle ◽  
Colloidal Crystal ◽  
Structural Evolution ◽  
X Ray ◽  
Crystal Fiber ◽  
X Ray Scattering ◽  
Ray Scattering

Structural evolution and phase transition of uniaxially stretched poly(butylene adipate-co-butylene terephthalate) films as revealed by in situ synchrotron radiation small and wide angle X-ray scattering

CrystEngComm ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 118-127 ◽  
Author(s):  
Lifu Li ◽  
Youxin Ji ◽  
Qianlei Zhang ◽  
Haoyuan Zhao ◽  
Sarmad Ali ◽  
...  
Keyword(s):  
Phase Transition ◽  
Synchrotron Radiation ◽  
Structural Evolution ◽  
Wide Angle ◽  
Uniaxial Stretching ◽  
Butylene Terephthalate ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Structural evolution and phase transition of poly(butylene adipate-co-butylene terephthalate) during uniaxial stretching.

A Revised O2 Reduction Model in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering

2019 ◽  
Author(s):  
Christian Prehal ◽  
Aleksej Samojlov ◽  
Manfred Nachtnebel ◽  
Manfred Kriechbaum ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Reduction Mechanism ◽  
Reduction Model ◽  
X Ray ◽  
X Ray Scattering ◽  
O2 Reduction ◽  
Ray Scattering

<b>Here we use in situ small and wide angle X-ray scattering to elucidate unexpected mechanistic insights of the O2 reduction mechanism in Li-O2 batteries.<br></b>

In situ Time-Resolved Small-Angle X-ray Scattering Reveals the Formation Kinetics of Polyelectrolyte Complex Micelles

2019 ◽  
Author(s):  
Hao Wu ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Matthew Tirrell
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Electrostatic Interactions ◽  
Polyelectrolyte Complex ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

We have directly observed the <i>in situ</i> self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. This work has elucidated one general kinetic pathway for the process of PEC micelle formation, which provides useful physical insights for increasing our fundamental understanding of complexation and self-assembly dynamics driven by electrostatic interactions that occur on ultrafast timescales.

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