Keren Zhang

ORCID: 0000-0003-4215-4449
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About
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Research Areas
  • Intermetallics and Advanced Alloy Properties
  • Titanium Alloys Microstructure and Properties
  • Advanced Polymer Synthesis and Characterization
  • Advanced materials and composites
  • MXene and MAX Phase Materials
  • Supramolecular Self-Assembly in Materials
  • Aluminum Alloy Microstructure Properties
  • Aluminum Alloys Composites Properties
  • Polymer composites and self-healing
  • High-Temperature Coating Behaviors
  • High Entropy Alloys Studies
  • Semiconductor materials and interfaces
  • Fuel Cells and Related Materials
  • Advanced Welding Techniques Analysis
  • Additive Manufacturing Materials and Processes
  • High Temperature Alloys and Creep
  • Metallurgical Processes and Thermodynamics
  • Advanced Battery Materials and Technologies
  • Supramolecular Chemistry and Complexes
  • Microstructure and Mechanical Properties of Steels
  • Microstructure and mechanical properties
  • Extraction and Separation Processes
  • Quasicrystal Structures and Properties
  • Analytical chemistry methods development
  • RNA Interference and Gene Delivery

Xi'an Shiyou University
2022-2025

Northwestern Polytechnical University
2016-2021

DuPont (United States)
2019-2020

C4 Imaging (United States)
2019-2020

Jiangsu University
2019-2020

University of Georgia
2018-2019

Virginia Tech
2013-2018

Interface (United States)
2014-2015

Beijing University of Chemical Technology
2011

Anhui University
2011

Based on the d-electron theory, a new type of high strength metastable β alloy Ti-5.2Mo-5.2Cr-4.0Al-4.4V-2.4Nb (Ti-542) was developed which presented excellent strength-plasticity matching. In solution state, yield can reach 871 MPa, where fracture elongation is as 23.6 %. The twining and martensitic transformation have been founded contributes to achieve superhigh plasticity. After aging treatment, Ti-542 increase 1256 MPa still 8.7 % obviously better than other commercial alloys at same...

10.1016/j.jmrt.2024.01.041 article EN cc-by-nc-nd Journal of Materials Research and Technology 2024-01-01

A one-pot melt polymerization of plant oil-based monomers and diamines afforded film-forming, isocyanate-free poly(amide-hydroxyurethane)s with processability mechanical integrity.

10.1039/c6gc01096b article EN cc-by-nc Green Chemistry 2016-01-01

The supramolecular blend of complementary nucleobase-functionalized ABA triblock copolymers self-assemble into a microphase-separated morphology with enhanced mechanical performance and thermal responsiveness.

10.1039/c4py01798f article EN cc-by Polymer Chemistry 2015-01-01

Coordination-driven self-assembly as a bottom-up approach has witnessed rapid growth in building giant structures the past few decades. Challenges still remain, however, within construction of architectures terms high efficiency and complexity from simple blocks. Inspired by features DNA protein, which both have specific sequences, we herein design series linear blocks with sequences through coordination between terpyridine ligands Ru(II). Different generations polycyclic supramolecules (C1...

10.1038/s41467-018-07045-9 article EN cc-by Nature Communications 2018-10-26

In the seeking of molecular expression fractal geometry, chemists have endeavored in construction molecules and supramolecules during past few years, while only a examples were reported, especially for discrete architectures. We herein designed constructed five generations supramolecular fractals (G1-G5) based on coordination-driven self-assembly terpyridine ligands. All ligands synthesized from triphenylamine motif, which played central role geometry control. Different approaches direct...

10.1021/jacs.8b05530 article EN Journal of the American Chemical Society 2018-10-05

RAFT polymerization afforded acrylic ABC triblock copolymers with self-complementary nucleobase-functionalized external blocks and a low-<italic>T</italic><sub>g</sub> soft central block.

10.1039/c4cc03363a article EN cc-by-nc Chemical Communications 2014-01-01

Abstract Well‐defined H‐shaped pentablock copolymers composed of poly( N ‐isopropylacrylamide) (PNIPAM), , ‐dimethylaminoethylacrylamide) (PDMAEMA), and poly(ethylene glycol) (PEG) with the chain architecture (A/B)‐ b ‐C‐ ‐(A/B) were synthesized by combination single‐electron‐transfer living radical polymerization, atom‐transfer click chemistry. Single‐electron‐transfer polymerization NIPAM using α,ω azide‐capped PEG macroinitiator resulted in PNIPAM‐ ‐PEG‐ ‐PNIPAM azide groups at block...

10.1002/pola.24298 article EN Journal of Polymer Science Part A Polymer Chemistry 2010-09-24

Styrenic DABCO salt monomers enabled synthesis of microphase-separated ionomers with doubly-charged pendant groups.

10.1039/c6py00426a article EN cc-by-nc Polymer Chemistry 2016-01-01

Ureido-cytosine pendant groups contributed to random acrylic copolymers with enhanced thermomechanical performance, well-defined morphologies, and reduced water uptake.

10.1039/c6py01519k article EN cc-by-nc Polymer Chemistry 2016-01-01

ABSTRACT Non‐isocyanate polyurethanes (NIPU) have rapidly emerged as a sustainable, less toxic, and environmentally friendly alternative to traditional isocyanate‐based thermoplastic polyurethane (TPU) synthesis. TPU is widely used in the medical industry due its excellent mechanical properties elasticity. However, little work has been done synthesize electrospin NIPU into fibrous mats for biomedical applications. In this work, melt polymerization of plant oil‐based cyclic carbonate monomer...

10.1002/app.46464 article EN Journal of Applied Polymer Science 2018-04-11

In this paper, the microstructure and properties of a Ti/Mg alloy clad plate manufactured by explosive welding were studied. The bonding interface was inspected ultrasonic examination (US). composition characterized OM SEM. Properties tensile test, shearing microhardness test electrochemical corrosion. results showed that made up straight areas wavy areas. areas, element diffusion occurred across interface. Additionally, in melting zone Mg layer near to Lots light particles embedded on zone....

10.3390/met12030399 article EN cc-by Metals 2022-02-25

The grain size of the full lamellae TiAl-based alloy changes from ~400 μm to ~40 through precipitation metastable structures by cyclic heat treatment. Based on this, two kinds variant selection processes—coherent γ variants precipitated during air-cooling process and αs holding at a single α phase region process—are identified promote formation refined Type I II coherent boundaries. oxidation tests 1000 °C for 100 h show that boundaries can greatly improve resistance inducing continuous...

10.3390/met14050521 article EN cc-by Metals 2024-04-29

ABC triblock copolymers bearing adenine- and thymine-functionalized external blocks self-assembled into long-range, ordered lamellar microphase-separated morphologies on non-patterned substrates. Intermolecular hydrogen bonding formed thymine-adenine triplets promoted self-assembly well-defined lamellae consisting of poly(n-butyl acrylate) soft domains complementary nucleobase hard domains, while duplets contributed to superior mechanical properties.

10.1039/c6cc03502g article EN cc-by-nc Chemical Communications 2016-01-01
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