Influence of Molecular Weight on the Nucleation and Growth of Different Crystal Forms in Isotactic Polypropylene: In Situ Synchrotron Microfocus X-Ray Scattering …

Y Lu, D Lyu, X Zhao, Y Men - Macromolecules, 2023 - ACS Publications
The molecular weight (M w)-dependent formation of mesophase and the α phase of isotactic
polypropylene (iPP) was explored by utilizing in situ synchrotron microfocus X-ray scattering …

Visualization of the necking initiation and propagation processes during uniaxial tensile deformation of crystalline polymer films via the generation of fluorescent …

S Kato, D Aoki, K Oikawa, K Tsuchiya… - ACS Macro …, 2021 - ACS Publications
To visualize and simultaneously quantify the necking behavior of crystalline polymer films
during uniaxial stretching, tetraarylsuccinonitrile (TASN) moieties were introduced into …

Deformation Behavior of Polyurethane Adhesive in the Single-Lap Joint Based on the Microbeam X-ray Scattering Method

K Obayashi, K Kamitani, CW Chu… - ACS Applied Polymer …, 2022 - ACS Publications
Single-lap joint (SLJ) specimens were prepared using two stainless steel substrates as
adherends and polyurethanes (PU) as an adhesive and then employed for adhesion testing …

Molecular Weight and Distribution Dependent Critical Stress of Fragmentation of Highly Oriented Amorphous Network in Stretched Isotactic Polypropylene

Y Lu, D Lyu, C Han, Y Men - Macromolecules, 2023 - ACS Publications
Isotactic polypropylene (iPP) can be stretched to a large strain developing a macroscopic
transparent structure with aligned fibrillar/micro-fibrillar crystals embedded into a highly …

X-ray Scattering Analyses on an Aggregation Structure of Poly (ethylene terephthalate) Films under Bending Deformation

A Ohara, K Kojio - Macromolecules, 2024 - ACS Publications
With the recent development of foldable electronic devices, there is a growing demand for
display materials that exhibit resistance to the formation of fold marks (folding resistance) …

Dynamics of matrix-free nanocomposites consisting of block copolymer-grafted silica nanoparticles under elongation evaluated through X-ray photon correlation …

CH Cheng, K Kamitani, S Masuda, K Uno… - polymer, 2021 - Elsevier
X-ray photon correlation spectroscopy (XPCS) is a powerful tool for investigating the
dynamics of polymer nanocomposites. In this study, XPCS was utilized to analyze the …

Interfacial Structure Analyses of Single Carbon Fiber-Embedded Polymers by In Situ X-ray Scattering and Birefringence Measurements

M Todaka, K Obayashi, R Kawatoko… - ACS Applied Polymer …, 2023 - ACS Publications
Single carbon fiber (CF)-embedded thermoset epoxy resin (EP) and thermoplastic
polycarbonate (PC) specimens were prepared to clarify the interfacial interaction between …

Specific deformation behavior of isotactic polypropylene films under a multiaxial stress field

K Kojio, A Fujimoto, C Nagano, S Nozaki, K Yokomachi… - Soft Matter, 2022 - pubs.rsc.org
The specific deformation behavior of crystalline polymer films, namely unoriented
crystallized isotactic polypropylene (it PP) films, was investigated under a multiaxial stress …

Crystallization behavior of biodegradable poly (L-lactic acid)(PLLA)/poly (butylene succinate)(PBS) blends based on in situ simultaneous wide-angle x-ray diffraction …

Y Kadowaki, K Kojio - Journal of Polymer Research, 2022 - Springer
Crystalline behavior of poly (L-lactic acid)(PLLA), polybutylene succinate (PBS) and their
(PLLA/PBS) blends were investigated using differential scanning calorimetry, dynamic …

Thermal dynamics affected formation and dislocation of PDLA morphology

T Lv, C Hu, J Li, S Huang, H Wen, H Li, J Chen, D Yu… - Polymer, 2020 - Elsevier
The morphologies and structures of crystalline polymers depend on the crystallization
condition, such as the quenching rate, crystallization temperature, pressure, and molecular …