Jianzhu Ju

Institution:
ESPCI, Paris

 

Supervisors:
Costantino Creton
Field of expertise:
Polymer physics and structural characterization
PhD subject:
Application property of double dynamics polymer networks

My project is the application property of double dynamics polymer networks. The main task will be combining property measurement and mesoscopic dynamics/structure characterization. To achieve the goal, diffusing wave spectroscopy (DWS) is applied to measure the dynamics in polymer network during fracture and other different condition.

DWS is sensitive to mesoscopic dynamics of polymer network and compatible with other characterization methods. With correlation from images as function of time, dynamics of polymer network in mesoscopic scale can be quantitatively characterized. Combined with macroscopic mechanical measurement and mechanophore study on bonds breakage, we will be able to provide a hierarchical model for fracture mechanism. On the other hand, the mesoscopic changes can be detectable even long time before any macroscopic behavior, which will provide the methods to predict the fracture before actual failure of the material.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Language
  • English Speaking
  • Chinese Speaking
Experimental Techniques and Skills
  • Preparation and characterization of chemical cross-linked polymer
  • In-situ synchrotron radiation small and wide-angle X-ray scattering (SAXS/WAXS) experiment and data processing
  • In-situ Small Angle Neutron Scattering (SANS), Dynamic Light Scattering (DLS)
  • Fourier-Transform Infrared Spectroscopy (FT-IR), Polarized Optical Microscopy (POM) and Quantum Cascade Lasers (QCL) experiment
  • Scanning Electron Microscope (SEM), Small-Amplitude Oscillatory Shear (SAOS), Atomic Force Microscopy (AFM) and Differential Scanning Calorimetry (DSC) sample preparation and measurement
  • Research and maintenance service in large-scale research facilities: synchrotron radiation and neutron resources
  • Machinery design: Inventor and SolidWorks
  • Apparatus and mechatronics design based on LabVIEW
  • Data Processing with Origin and Python
Honors
  • National Scholarship, 2016
  • Dalian Outstanding Graduate, 2014
  • Dalian university of technology scholarship for academic excellence, 2011~2013
  • Dalian university of technology scholarship for Ideological Development, 2012
  • Outstanding Student Cadres, 2011 and 2013
  • Outstanding volunteer of 12th Challenge-cup Extracurricular and Academic Contest, 2011
  • Suzhou Industrial Park Scholarship, 2011
  • First Prize in the Liaoning High School Chemistry Olympic Competition, 2009

Curriculum Vitae

Papers

Jianzhu Ju, Nan Tian, Zhen Wang, Fengmei Su, Haoran Yang, Jiarui Chang, Xueyu Li, Sarmad Ali, Yuanfei Lin, Liangbin Li. Precursor Assisted Crystallization in Cross-Linked Isotactic Polypropylene, Polymer. 2019.

Jianzhu Ju, Fengmei Su, Zhen Wang, Xiaoliang Tang, Haoran Yang, Xiaowei Chen, Yankun Lv, Jie Lu, Nan Tian, Liangbin Li, Extension decelerated
crystallization in γ-irradiated isotactic polypropylene: The role of asymmetric chain relaxation, Polymer. 2017

Jianzhu Ju, Zhen Wang, Fengmei Su, Youxin Ji, Haoran Yang, Jiarui Chang,Sarmad Ali, Xiangyang Li, Liangbin Li, Extensional Flow-Induced Dynamic PhaseTransitions in Isotactic Polypropylene, Macromolecular Rapid Communications. 2016.

Giorgia Scetta, Jianzhu Ju, Nathan Selles, Patrick Heuillet, Matteo Ciccotti, Costantino Creton. Strain induced strengthening of soft thermoplastic
polyurethanes under cyclic deformation, Journal of Polymer Science. 2021

Simone Sbrescia, Jianzhu Ju, Tom Engels, Evelyne Van Ruymbeke, Michelle Seitz. Morphological origins of temperature and rate dependent mechanical properties of model soft thermoplastic elastomers, Journal of Polymer Science. 2021

Nan Tian,* Tingting Wang, Xiaoqing Tu, Yue Shui, Jianzhu Ju,* Guangai Sun, Dong Liu*. Cyclic tensile machine with wide speed range for in-situ neutron/Xray scattering study on elastomers. Review of Scientific instruments. 2020

Zhen Wang, Jianzhu Ju, Lingpu Meng, Nan Tian, Jiarui Chang, Haoran Yang, Youxin Ji, Fengmei Su, Liangbin Li, Structural and Morphological Transitions in Extension-Induced Crystallization of Poly(1-butene) Melt. Soft matter. 2017.

Fengmei Su, Youxin Ji, Lingpu Meng, Zhen Wang, Zeming Qi, Jiarui Chang, Jianzhu Ju, Liangbin Li. Coupling of Multiscale Orderings during Flow-Induced Crystallization of Isotactic Polypropylene, Macromolecules. 2017.

Hao-ran Yang, Jian-zhu Ju, Jie Lu, Jia-rui Chang, Feng-mei Su, Liang-bin Li, The Influence of Shear Homogeneity on Flow-induced Crystallization of Isotactic Polypropylene. Acta Polymerica Sinica. 2017. (in Chinese)

Rui Zhang, You-xin Ji, Qian-lei Zhang, Jian-zhu Ju, Ali Sarmad, Li-fu Li, Haoyuan Zhao, Liang-bin Li. A universal blown film apparatus for in-situ X-ray measurements, Chinese Journal of Polymer Science. 2017.

Zhen Wang, Jianzhu Ju, Junsheng Yang, Zhe Ma, Dong Liu, Kunpeng Cui, Haoran Yang, Jiarui Chang, Ningdong Huang, and Liangbin Li, The Non-Equilibrium Phase Diagrams of Flow-Induced Crystallization and Melting of Polyethylene, Scientific Reports. 2016.

Haoran Yang, Dong Liu, Jianzhu Ju, Jing Li, Guanyun Yan, Guangai Sun and Liangbin Li, Influence of Chain Deformation on the Formation of Shish Nuclei and the Motion of Molecular Chain during Subsequent Crystallization under Extension Flow: An in-situ SANS, SAXS, and WAXD Study. Macromolecules. 2016.

 

Education

PSL research University

2018 — Present
PhD in Polymer Science
Laboratory of Soft Matter Science and Engineering

University of Science and Technology of China

2014—2017
Master of Engineering in Material physics
National synchrotron radiation laboratory

Main subjects:

  • X-ray Diffraction
  • Thermal Analysis Method and Its Application
  • Scaling Concept in Polymer Physics
  • Fundamentals of Synchrotron Radiation Applications
  • Materials Chemistry

Advisor: Prof. Liangbin Li
Thesis Title: Fast Flow Induced Non-Equilibrium Phase Transition of Isotactic Polypropylene

School of Mechanical Engineering, Dalian University of Technology

2010 — 2014
Bachelor of Engineering in Measurement Technology and Apparatus

Main subjects:

  • English Language, Japanese Language
  • Mathematics, Physics, Chemistry
  • Mechanical Engineering, Machinery Design, Mechatronics
  • Computer-Aided Design (Inventor, CAD, SolidWorks)

GPA: 3.6/4
Ranking: 1/30
Thesis Title: High Speed Rheometer for the Study of Flow Induced Crystallization in
Polymer Melt

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