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Study of Stimuli-Responsive Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: closed (5 July 2023) | Viewed by 3701

Special Issue Editor


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Guest Editor
College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China
Interests: environmentally sound, functional, and stimuli-responsive polymers; absorbent material; nano materials; tanning chemistry; cleaner production and environmental management

Special Issue Information

Dear Colleagues,

We have been asked by the Editor of Polymers (MDPI) to coordinate a Special Issue, entitled “Stimuli-Responsive Polymers”.

Stimuli-responsive polymers, also called smart polymers or stimuli-sensitive polymers, as well as environmentally responsive polymers or intelligent polymers, are macromolecular materials that are sensitive to external stimulus, such as pH, light, temperature, electrical, or magnetic fields, etc. When stimulated by external stimuli, the microstructure of the materials changes (e.g., the molecular bond cleavage or rearrangement, and molecular motion), followed by changes in their macroscopic properties (e.g., shape, color, or functionality). Stimuli-responsive polymers can be engineered to possess different chemical, biological, mechanical, optical, electrical, and magnetic properties, and can be designed into abundant shapes, such as film, foam, particle, and fiber, because of the versatile selection of functional groups and backbone. In recent years, scientists have been trying to link smart materials with bionics, which may explore new and innovative applications of stimuli-responsive polymers, including shape memory fibers, thermal protective clothing, packaging, and other uses.

The aim of this Special Issue is to highlight the progress on design, synthesis, properties, and applications of stimuli-responsive polymers.

Dr. Xiaoyu Guan
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

  • smart polymers
  • stimuli-sensitive polymers
  • environmentally responsive polymers
  • intelligent polymers
  • synthetic polymer
  • natural polymer
  • macromolecular materials

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Published Papers (1 paper)

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Research

31 pages, 8084 KiB  
Article
Influence of the Poly(ethylene Glycol) Methyl Ether Methacrylates on the Selected Physicochemical Properties of Thermally Sensitive Polymeric Particles for Controlled Drug Delivery
by Agnieszka Gola, Maria Kozłowska and Witold Musiał
Polymers 2022, 14(21), 4729; https://doi.org/10.3390/polym14214729 - 4 Nov 2022
Cited by 7 | Viewed by 3247
Abstract
Thermosensitive copolymers P1–P5 of N-isopropylacrylamide (NIPA) and poly(ethylene glycol) methyl ether methacrylates (PEGMEMs) were synthesized via surfactant-free precipitation polymerization (SFPP) using ammonium persulfate (APS) at 70 °C. The polymerization course was evaluated by the conductivity. The hydrodynamic diameters and the polydispersity indexes [...] Read more.
Thermosensitive copolymers P1–P5 of N-isopropylacrylamide (NIPA) and poly(ethylene glycol) methyl ether methacrylates (PEGMEMs) were synthesized via surfactant-free precipitation polymerization (SFPP) using ammonium persulfate (APS) at 70 °C. The polymerization course was evaluated by the conductivity. The hydrodynamic diameters and the polydispersity indexes (PDI) of P1–P5 in the 18–45 °C range, which were assessed via dynamic light scattering (DLS), were at 18° (nm): 26.07 ± 0.54 (PDI 0.65 ± 0.03), 68.00 ± 1.10 (PDI 0.56 ± 0,02), 45.12 ± 0.57 (PDI 0.51 ± 0.03), 62.78 ± 0.40 (PDI 0.53 ± 0.003), and 92.95 ± 1.56 (PDI 0.60 ± 0.04), respectively. The lower critical solution temperatures ranged from 31 to 33 °C. The electrophoretic mobilities estimated the zeta potential in the 18–45 °C range, and at 18 °C, they were (mV): −4.64 ± 1.30, −6.91 ± 2.67, −5.85 ± 3.17, −2.28 ± 0.30, and −3.60 ± 0.96 for P1–P5, respectively. The polymers were characterized by Attenuated Total Reflectance Fourier-Transform Infrared spectroscopy (ATR-FTIR), H nuclear magnetic resonance (1H NMR), thermogravimetric analysis (TGA/DTA), Differential Scanning Calorimetry (DSC), and powder X-ray diffraction analysis (PXRD). Stable amorphous polymers were obtained. We conclude that the length of the co-monomer chain nonlinearly influences the properties of the obtained thermosensitive polymer nanostructures. Full article
(This article belongs to the Special Issue Study of Stimuli-Responsive Polymers)
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