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Polymers
Special Issues
Structural and Dynamic Properties of Polymer Materials
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Structural and Dynamic Properties of Polymer Materials

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

Deadline for manuscript submissions: 30 August 2024 | Viewed by 595

Special Issue Editor

Prof. Dr. Dapeng Wang

E-Mail Website
Guest Editor
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Interests: polymer; colloids & interfaces; diffusion; single-molecule microscopy; AI-assisted polymer informatics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymer materials play a vital role in numerous modern applications, ranging from industrial engineering, to healthcare and electronics. However, to reliably utilize these materials, it is crucial to understand their structural and dynamic properties, particularly in the context of composite materials. The behavior and performance of polymer materials in various applications are heavily influenced by their structural and dynamic properties, which, in turn, are affected by factors such as their molecular weight, cross-linking, and morphology. By examining these properties, researchers and professionals can develop novel polymer-based composites with enhanced characteristics, such as increased strength, flexibility, and biocompatibility. 

The aim of this Special Issue is to compile the latest research on the structural and dynamic properties of polymer materials, with a particular emphasis on composite materials and their biomedical applications. For example, researchers might investigate how composite materials incorporating polymers with different molecular structures and surface properties influence cell behavior and tissue growth for regenerative medicine applications. Moreover, the study of polymer composites can provide useful insights into fundamental material science, as well as identify innovative applications for these materials. Through high-quality contributions from experts in the field, this Special Issue seeks to advance the field of polymer materials, thus expanding our understanding of the properties, challenges, and opportunities presented by these versatile materials.

Prof. Dr. Dapeng Wang
Guest Editor

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.

Keywords

  • hydrogels and polyelectrolytes
  • biomateirals
  • composites
  • retardant polymers
  • functional composites
  • new processing methods and instruments
  • 3D printing
  • foaming
  • spinning, fibers and textiles
  • membranes

Published Papers (1 paper)

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Research

12 pages, 12218 KiB  
Article
Understanding the Impact of Chain Mobility on Conformational Evolution and Kinetics of Mesophase Formation in Poly(ʟ-lactide) under Low-Pressure CO2
by Youjuan Liao and Qiaofeng Lan
Polymers 2024, 16(10), 1378; https://doi.org/10.3390/polym16101378 - 12 May 2024
Viewed by 408
Abstract
Although the mesomorphic phase as an intermediate state has been introduced to understand polymer crystallization, the understanding of the mesomorphic phase is far from complete. Here, the effect of chain mobility on the mesophase structuring in melt-quenched poly(ʟ-lactide) (PLLA) treated in low-pressure CO [...] Read more.
Although the mesomorphic phase as an intermediate state has been introduced to understand polymer crystallization, the understanding of the mesomorphic phase is far from complete. Here, the effect of chain mobility on the mesophase structuring in melt-quenched poly(ʟ-lactide) (PLLA) treated in low-pressure CO2 at 1.6–2.0 MPa and 0 °C was investigated using infrared (IR) spectroscopy, differential scanning calorimetry (DSC), and atomic force microscopy (AFM). The IR and AFM results demonstrated that the final degree of order and the kinetics of structural evolution during the CO2-induced mesophase formation were critically dependent on the CO2 pressure. This was attributed to the distinct dynamics of conformational evolution (gg to gt conformer transition) due to the different CO2 pressures. The thermal behavior from the DSC results showed that CO2 pressure dominated both the scale and dynamics of the chain motion of PLLA. At a lower CO2 pressure of 1.6 MPa, smaller-scale segmental motion was not replaced by the larger-scale cooperative motion that occurred at a relatively higher CO2 pressure of 2 MPa, which was favorable for faster mesophase formation. Consequently, by inhibiting direct crystallization under limited mobility conditions, it was demonstrated that different chain mobility controlled by CO2 pressure and thus CO2 solubility impacted the dynamics of the mesophase formation of PLLA. The present results have implications for understanding the role of chain mobility in determining the intermediate structural phases in semicrystalline polymers. Full article
(This article belongs to the Special Issue Structural and Dynamic Properties of Polymer Materials)
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