Controllable reinforcement of stiffness and toughness of polypropylene via thermally induced self-assembly of β-nucleating agent

2014 ◽  
Vol 131 (16) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yijun Li ◽  
Xinyu Wen ◽  
Min Nie ◽  
Qi Wang
Keyword(s):  
Self Assembly ◽  
Nucleating Agent ◽  
Thermally Induced

Thermally Induced Self-Assembly and Cyclization of l-Leucyl-l-Leucine in Solid State

2017 ◽  
Vol 121 (36) ◽  
pp. 8603-8610 ◽  
Author(s):  
Marat A. Ziganshin ◽  
Aisylu S. Safiullina ◽  
Alexander V. Gerasimov ◽  
Sufia A. Ziganshina ◽  
Alexander E. Klimovitskii ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Thermally Induced

scholarly journals Crystalline modification of a rare earth nucleating agent for isotactic polypropylene based on its self-assembly

2018 ◽  
Vol 5 (5) ◽  
pp. 180247 ◽  
Author(s):  
Yuanming Zhang ◽  
Tingting Sun ◽  
Wei Jiang ◽  
Guangting Han
Keyword(s):  
Hydrogen Bond ◽  
Rare Earth ◽  
Isotactic Polypropylene ◽  
Self Assembly ◽  
Dendritic Structure ◽  
Nucleating Agent ◽  
The Self ◽  
Structure Evolution ◽  
Crystalline Modification ◽  
Assembly Structure

In this paper, the crystalline modification of a rare earth nucleating agent (WBG) for isotactic polypropylene (PP) based on its supramolecular self-assembly was investigated by differential scanning calorimetry, wide-angle X-ray diffraction and polarized optical microscopy. In addition, the relationship between the self-assembly structure of the nucleating agent and the crystalline structure, as well as the possible reason for the self-assembly behaviour, was further studied. The structure evolution of WBG showed that the self-assembly structure changed from a needle-like structure to a dendritic structure with increase in the content of WBG. When the content of WBG exceeded a critical value (0.4 wt%), it self-assembled into a strip structure. This revealed that the structure evolution of WBG contributed to the K β and the crystallization morphology of PP with different content of WBG. In addition, further studies implied that the behaviour of self-assembly was a liquid–solid transformation of WBG, followed by a liquid–liquid phase separation of molten isotactic PP and WBG. The formation of the self-assembly structure was based on the free molecules by hydrogen bond dissociation while being heated, followed by aggregation into another structure by hydrogen bond association while being cooled. Furthermore, self-assembly behaviour depends largely on the interaction between WBG themselves.

Oriented polypropylene cast films consisted of β-transcrystals induced by the nucleating agent self-assembly and its homogeneous membranes with high porosity

Polymer ◽  
2018 ◽  
Vol 151 ◽  
pp. 136-144 ◽  
Author(s):  
Gao-Gao Wu ◽  
Li-Yang Xu ◽  
Wen-Bo Chen ◽  
Chao Ding ◽  
Zheng-Ying Liu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Nucleating Agent ◽  
High Porosity ◽  
Cast Films ◽  
Oriented Polypropylene

Thermally induced cyclization of L ‐isoleucyl‐ L ‐alanine in solid state: Effect of dipeptide structure on reaction temperature and self‐assembly

2019 ◽  
Vol 25 (8) ◽  
Author(s):  
Marat A. Ziganshin ◽  
Radik A. Larionov ◽  
Alexander V. Gerasimov ◽  
Sufia A. Ziganshina ◽  
Alexander E. Klimovitskii ◽  
...  
Keyword(s):  
Solid State ◽  
Reaction Temperature ◽  
Self Assembly ◽  
Thermally Induced ◽  
State Effect

Patterning 2D Organic Crystalline Semiconductors via Thermally Induced Self‐Assembly

2020 ◽  
Vol 6 (9) ◽  
pp. 2000438
Author(s):  
Yiwei Duan ◽  
Jun Qian ◽  
Jianhang Guo ◽  
Sai Jiang ◽  
Chengdong Yang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Thermally Induced

scholarly journals Synthesis and Investigation of Thermo-Induced Gelation of Partially Cross-Linked Poly-2-isopropyl-2-oxazoline in Aqueous Media

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 698 ◽  
Author(s):  
Alina Amirova ◽  
Serafim Rodchenko ◽  
Mikhail Kurlykin ◽  
Andrey Tenkovtsev ◽  
Illia Krasnou ◽  
...  
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Aqueous Media ◽  
Water Soluble ◽  
Thermally Induced ◽  
Thermosensitive Gel ◽  
Step Procedure ◽  
Physical Gel ◽  
Sol Gel Transition ◽  
Gel Transition

Water-soluble, partially cross-linked poly-2-isopropyl-2-oxazoline combining the properties of chemical and physical gels was synthesized by a two-step procedure. Thermally induced sol-gel transition in its aqueous solution was studied by rheology, light scattering, and turbidimetry. It was demonstrated that the synthesized product is bimodal; it consists of linear and cross-linked components. The cross-linked components are responsible for the gelation, while the linear ones abate the viscosity growth. Heating the solution above the phase transition temperature leads to the self-assembly of the particles into a physical gel. The combination of chemical and physical cross-linking was found to be a prospective route for thermosensitive gel development.

In Situ SAXS Study on a New Mechanism for Mesostructure Formation of Ordered Mesoporous Carbons: Thermally Induced Self-Assembly

2012 ◽  
Vol 134 (27) ◽  
pp. 11136-11145 ◽  
Author(s):  
Jörg Schuster ◽  
Ralf Köhn ◽  
Markus Döblinger ◽  
Andreas Keilbach ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Self Assembly ◽  
Mesoporous Carbons ◽  
Ordered Mesoporous Carbons ◽  
Thermally Induced ◽  
Ordered Mesoporous

In-Situ Synchrotron X-ray Scattering Studies of the Thermally-Induced Self-Assembly of High-Performance Aromatic Copolyesters

2014 ◽  
Vol 6 (11) ◽  
pp. 2352-2357
Author(s):  
Young Yong Kim ◽  
Kyuyoung Heo ◽  
Kyeong Sik Jin ◽  
Jehan Kim ◽  
Jong Ryang Kim ◽  
...  
Keyword(s):  
Self Assembly ◽  
High Performance ◽  
Thermally Induced ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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