Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.6
5.0
Journals
Polymers
Special Issues
State of the Art and Perspectives of Polymer Science and...
share announcement

State of the Art and Perspectives of Polymer Science and Technology in China

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Innovation of Polymer Science and Technology".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 2606

Special Issue Editors

Prof. Dr. Sixun Zheng

E-Mail Website
Guest Editor
Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: microphase separation and self-assembly in multicomponent polymer systems; synthesis and characterization of polyhedral oligomeric silsesquioxane (POSS) monomers and POSS-containing polymers; shape memory, self-healing, and reprocessing properties of polymers; dynamics of polymers in bulk by solid NMR spectroscopy (1H, 13C, 29Si, 15N and 2H NMR)
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yuekun Lai

grade E-Mail Website
Guest Editor
College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
Interests: TiO2-based functional materials; surface and interface; biomimetics; water treatment; energy storage and conversion
Dr. Wei Zhang

E-Mail Website1 Website2
Guest Editor
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
Interests: nanofibers; UHMWPE fibers; electrospinning; gel spinning; 3D printing; polymer composites; water treatment; biomaterials; energy storage materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymer science and technology have developed rapidly over the past decade. Aiming at highlighting the state-of-the-art polymer research in China, we are now pleased to announce that the journal of Polymers is compiling an exclusive collection of papers from academicians and outstanding scholars in China.

This Special Issue will focus on the design, synthesis, performance, and application advances of polymers, new experimental discoveries, and novel technological improvements, with the objective to provide a comprehensive overview of state-of-the-art polymer science and engineering in China.

Because of your renowned expertise in this field, we cordially invite you to contribute a paper to this Special Issue. Full papers, communications, and reviews are all welcome. We expect these papers to be widely read and highly influential. All papers in this Special Issue will be well promoted.

Prof. Dr. Sixun Zheng
Prof. Dr. Yuekun Lai
Dr. Wei Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

12 pages, 5380 KiB  
Article
Compressive Mechanical Behavior and Corresponding Failure Mechanism of Polymethacrylimide Foam Induced by Thermo-Mechanical Coupling
by Zeyang Xing, Qianying Cen, Qingyou Wang, Lili Li, Zhigang Wang and Ling Liu
Polymers 2024, 16(9), 1199; https://doi.org/10.3390/polym16091199 - 25 Apr 2024
Abstract
Thermal–mechanical coupling during the molding process can cause compressive yield in the polymer foam core and then affect the molding quality of the sandwich structure. This work investigates the compressive mechanical properties and failure mechanism of polymethacrylimide (PMI) foam in the molding temperature [...] Read more.
Thermal–mechanical coupling during the molding process can cause compressive yield in the polymer foam core and then affect the molding quality of the sandwich structure. This work investigates the compressive mechanical properties and failure mechanism of polymethacrylimide (PMI) foam in the molding temperature range of 20–120 °C. First, the DMA result indicates that PMI foam has minimal mechanical loss in the 20~120 °C range and can be regarded as an elastoplastic material, and the TGA curve further proves that the PMI foam is thermally stable within 120 °C. Then, the compression results show that compared with 20 °C, the yield stress and elastic modulus of PMI foam decrease by 22.0% and 17.5% at 80 °C and 35.2% and 31.4% at 120 °C, respectively. Meanwhile, the failure mode changes from brittle fracture to plastic yield at about 80 °C. Moreover, a real representative volume element (rRVE) of PMI foam is established by using Micro-CT and Avizo 3D reconstruction methods, and the simulation results indicate that PMI foam mainly shows brittle fractures at 20 °C, while both brittle fractures and plastic yield occur at 80 °C, and most foam cells undergo plastic yield at 120 °C. Finally, the simulation based on a single-cell RVE reveals that the air pressure inside the foam has an obvious influence of about 6.7% on the yield stress of PMI foam at 80 °C (brittle–plastic transition zone). Full article
(This article belongs to the Special Issue State of the Art and Perspectives of Polymer Science and Technology in China)
►▼ Show Figures

Figure 1

17 pages, 5365 KiB  
Article
Electrorheological Effect of Suspensions of Polyaniline Nanoparticles with Different Morphologies
by Jinhua Yuan, Xufeng Hu, Xiaopeng Zhao and Jianbo Yin
Polymers 2023, 15(23), 4568; https://doi.org/10.3390/polym15234568 - 29 Nov 2023
Viewed by 641
Abstract
Polyaniline (PANI) nanospheres, nanofibers, and nanoplates were prepared using the oxidative polymerization method. Scanning electron microscopy (SEM) was used to observe the three morphologies of PANI, and their structure was tested using infrared spectroscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. The [...] Read more.
Polyaniline (PANI) nanospheres, nanofibers, and nanoplates were prepared using the oxidative polymerization method. Scanning electron microscopy (SEM) was used to observe the three morphologies of PANI, and their structure was tested using infrared spectroscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. The influence of particle morphology on the electrorheological (ER) effect was studied through rheological experiments and molecular dynamics (MD) simulation. The experimental and simulation results indicate that without applying an electric field, the nanofibers easily form a three-dimensional network structure in the suspension, resulting in yield stress. The three-dimensional network structure of the nanoplate suspension becomes weaker and the PANI nanosphere suspension lacks the ability to form a three-dimensional network structure. After applying an electric field, under the same condition, the yield stress and electric field-induced shear stress increment of PANI nanofibers are the highest, followed by nanoplates, and those of PANI nanospheres are the lowest. This indicates that the ER effect increases with the increase in particle morphology anisotropy. Through three-dimensional visual simulation analysis, it can be concluded that the enhanced ER effect associated with increased particle anisotropy can be attributed to improved stability in the ER chain structure. Full article
(This article belongs to the Special Issue State of the Art and Perspectives of Polymer Science and Technology in China)
►▼ Show Figures

Figure 1

11 pages, 2831 KiB  
Article
Melt Memory Effect in Polyethylene Random Terpolymer with Small Amount of 1-Octene and 1-Hexene Co-Units: Non-Isothermal and Isothermal Investigations
by Dengfei Wang, Shiyan Li, Ying Lu, Jian Wang and Yongfeng Men
Polymers 2023, 15(7), 1721; https://doi.org/10.3390/polym15071721 - 30 Mar 2023
Viewed by 1167
Abstract
Homo-polymers of reasonable molecular weight relax very fast in the molten state. Starting from a semi-crystalline structure, when the homo-polymer is heated up to a temperature higher than its nominal melting temperature, it relaxes quickly into a homogenous molten state. The following crystallization [...] Read more.
Homo-polymers of reasonable molecular weight relax very fast in the molten state. Starting from a semi-crystalline structure, when the homo-polymer is heated up to a temperature higher than its nominal melting temperature, it relaxes quickly into a homogenous molten state. The following crystallization temperature during cooling remains constant irrespective of the melt temperature. However, the situation is evidently different in copolymers. A phenomenon named the crystallization melt memory effect denotes an increased crystallization rate during cooling after a polymer was melted at different temperatures, which is often observed. The melt temperature can be even higher than the equilibrium melting temperature of the corresponding polymer crystals. In this work, we investigated such memory effect in a polyethylene random terpolymer with a small fraction of 1-octene and 1-hexene co-units using differential scanning calorimetry techniques. Both non-isothermal and isothermal protocols were employed. In non-isothermal tests, a purposely prepared sample with well defined thermal history (the sample has been first conditioned at 200 °C for 5 min to eliminate the thermal history and then cooled down to −50 °C) was melted at different temperatures, followed by a continuous cooling at a constant rate of 20 °C/min. Peak crystallization temperature during cooling was taken to represent the crystallization rate. Whereas, in isothermal tests, the same prepared sample with well defined thermal history was cooled to a certain crystallization temperature after being melted at different temperatures. Here, time to complete the isothermal crystallization was recorded. It was found that the results of isothermal tests allowed us to divide the melt temperature into four zones where the features of the crystallization half time change. Full article
(This article belongs to the Special Issue State of the Art and Perspectives of Polymer Science and Technology in China)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop