Advances and Applications of Block Copolymers II

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

Deadline for manuscript submissions: 15 March 2025 | Viewed by 6297

Special Issue Editors


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POLYMAT and Departamento de Química Aplicada, Facultad de Ciencias Químicas, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Etorbidea 72, 20018 San Sebastián, Spain
Interests: chemical modification reactions; preparation of composite materials; synthesis of hydrogels for wound healing
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Laboratory of Polymer Science & Engineering, Department of Materials Science Engineering, University of Ioannina, University Campus-Dourouti, 45110 Ioannina, Greece
Interests: living polymerization methods (anionic and living radical) of linear and non-linear polymers; molecular characterization in solution; self assembly of various types of polymers; structure/properties relationship; various modification reactions for polymers; superhydrophobic and super hydrophilic materials; conjugated polymers; nanopatterning of nanostructures
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Over the years, research on polymers have significanlty increased, providing new insights into their applications for improving existing technologies and systems. A wide array of polymerization techniques are available which can polymerize most monomers, thereby leading to the formation of block copolymers (BCPs) that possess various advanced properties such as self-healing, self-assembly, high biocompatibility, and responsiveness. 

Numerous studies have already been published on the potential applications and advantages of BCPs which have substantial scientific, societal, as well as economic impacts. Nevertheless, many challenges in their development and utilization remain to be tackled, such as issues related to the synthetic procedure, scale-up, using biocompatible materials, and high technological applications. 

This Special Issue, ‘Advances and Applications of Block Copolymers II’ invites submissions of review articles, original research manuscripts, and short communications that undercore the recent progess achieved in developing and using BCPs. The keywords presented below indicate some potential topics of interest; however, the list is not exhaustive, and papers addressing any other relevant aspects of BCPs will be accepted as well. 

Dr. Nikolaos Politakos
Prof. Dr. Apostolos Avgeropoulos
Guest Editors

Manuscript Submission Information

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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

  • polymers
  • copolymers
  • block copolymers
  • controlled synthesis
  • anionic polymerization
  • RAFT polymerization
  • ATRP polymerization
  • emulsion polymerization
  • molecular characterization
  • morphological characterization
  • terpolymers
  • hybrid materials
  • polypeptides
  • polymeric chimeras
  • composite materials
  • self-assembly
  • polymer brushes
  • biopolymers
  • biocompatibility
  • smart materials
  • responsive properties
  • hydrogels
  • drug delivery
  • computational chemistry
  • structure–property relationship
  • polymer nano/micro particles
  • self-healing materials
  • recyclability

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Published Papers (5 papers)

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Research

15 pages, 2336 KiB  
Article
On the Properties of Styrene–Maleic Acid Copolymer–Lipid Nanoparticles: A Solution NMR Perspective
by Vladislav V. Motov, Erik F. Kot, Svetlana O. Kislova, Eduard V. Bocharov, Alexander S. Arseniev, Ivan A. Boldyrev, Sergey A. Goncharuk and Konstantin S. Mineev
Polymers 2024, 16(21), 3009; https://doi.org/10.3390/polym16213009 - 26 Oct 2024
Viewed by 534
Abstract
The production of functionally active membrane proteins (MPs) in an adequate membrane environment is a key step in structural biology. Polymer–lipid particles based on styrene and maleic acid (SMA) represent a promising type of membrane mimic, as they can extract properly folded MPs [...] Read more.
The production of functionally active membrane proteins (MPs) in an adequate membrane environment is a key step in structural biology. Polymer–lipid particles based on styrene and maleic acid (SMA) represent a promising type of membrane mimic, as they can extract properly folded MPs directly from their native lipid environment. However, the original SMA polymer is sensitive to acidic pH levels, which has led to the development of several modifications: SMA-EA, SMA-QA, and others. Here, we introduce a novel SMA derivative with a negatively charged taurine moiety, SMA-tau, and investigate the formation and characteristics of lipid–SMA-EA and lipid–SMA-tau membrane-mimicking particles. Our findings demonstrate that both polymers can form nanodiscs with a patch of lipid bilayer that can undergo phase transitions at temperatures close to those of the lipid bilayer membranes. Finally, we discuss the potential applications of these SMAs for NMR spectroscopy. Full article
(This article belongs to the Special Issue Advances and Applications of Block Copolymers II)
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19 pages, 2379 KiB  
Article
Spectroscopic and Thermal Characterisation of Interpenetrating Hydrogel Networks (IHNs) Based on Polymethacrylates and Pluronics, and Their Physicochemical Stability under Aqueous Conditions
by David S. Jones, Marion Westwood, Shu Li and Gavin P. Andrews
Polymers 2024, 16(19), 2796; https://doi.org/10.3390/polym16192796 - 1 Oct 2024
Viewed by 542
Abstract
This study describes the physicochemical characterisation of interpenetrating hydrogel networks (IHNs) composed of either poly(hydroxyethylmethacrylate, p(HEMA)) or poly(methacrylic acid, p(MAA)), and Pluronic block copolymers (grades F127, P123 and L121). IHNs were prepared by mixing the acrylate monomer with Pluronic block copolymers followed by [...] Read more.
This study describes the physicochemical characterisation of interpenetrating hydrogel networks (IHNs) composed of either poly(hydroxyethylmethacrylate, p(HEMA)) or poly(methacrylic acid, p(MAA)), and Pluronic block copolymers (grades F127, P123 and L121). IHNs were prepared by mixing the acrylate monomer with Pluronic block copolymers followed by free radical polymerisation. p(HEMA)–Pluronic blends were immiscible, evident from a lack of interaction between the two components (Raman spectroscopy) and the presence of the glass transitions (differential scanning calorimetry, DSC) of the two components. Conversely, IHNs of p(MAA) and each Pluronic were miscible, displaying a single glass transition and secondary bonding between the carbonyl group of p(MAA) and the ether groups in the Pluronic block copolymers (Raman and ATR-FTIR spectroscopy). The effect of storage of the IHNs in Tris buffer on the physical state of each Pluronic and on the loss of Pluronic from the IHNs were studied using DSC and gravimetric analysis, respectively. Pluronic loss from the IHNs was dependent on the grade of Pluronic, time of immersion in Tris buffer, and the nature of the IHN (p(HEMA) or p(MAA)). At equilibrium, the loss was greater from p(HEMA) than from p(MAA) IHNs, whereas increasing ratio of poly(propylene oxide) to poly(ethylene oxide) decreased Pluronic loss. The retention of each Pluronic grade was shown to be primarily due to its micellization; however, hydrogen bonding between Pluronic and p(MAA) (but not p(HEMA)) IHNs contributed to their retention. Full article
(This article belongs to the Special Issue Advances and Applications of Block Copolymers II)
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22 pages, 12390 KiB  
Article
Preparation and Structural-Thermodynamical Investigation of Renewable Copolyesters Based on Poly (Ethylene Succinate) and Polyisosorbide
by Chaima Bouyahya, Panagiotis A. Klonos, Alexandra Zamboulis, Eleftheria Xanthopoulou, Nina Maria Ainali, Mustapha Majdoub, Apostolos Kyritsis and Dimitrios N. Bikiaris
Polymers 2024, 16(15), 2173; https://doi.org/10.3390/polym16152173 - 30 Jul 2024
Viewed by 722
Abstract
A series of novel renewable copolymers based on poly(ethylene succinate) (PESu) and poly(isosorbide succinate) (PISSu), with the Isosorbide (Is)/PESu molar ratio varying from 5/95 to 75/25, were synthesized in-situ and studied in this work. A sum of characterization techniques was employed here for [...] Read more.
A series of novel renewable copolymers based on poly(ethylene succinate) (PESu) and poly(isosorbide succinate) (PISSu), with the Isosorbide (Is)/PESu molar ratio varying from 5/95 to 75/25, were synthesized in-situ and studied in this work. A sum of characterization techniques was employed here for the structural and thermo-dynamical characterization. The sophisticated technique of dielectric spectroscopy, along with proper analysis, enabled the molecular dynamics mapping of both the local and segmental types, which is presented for such materials for the first time. With increasing the Is fraction, shorter copolymeric entities were gradually formed. Based on the overall findings, the systems were found to be homogeneous, e.g., exhibiting single glass transitions, with the two polymer segments being found to be excellently distributed. The latter is indirect, although strong, evidence for the successful copolymerization. The thermal degradation mechanism for the copolymers was exhaustingly explored employing analytical pyrolysis. The systems exhibited, in general, good thermal stability, according to the thermogravimetric analysis. Confirming one of the initial scopes for the present systems, isosorbide plays here the role of hardener (PISSu) over the soft polymer (PESu), and this is reflected in the monotonic increase of the glass transition temperature, Tg, from −16 to ~56 °C. The introduction of Is results in an increase in constraints (hardening of the matrix), while there seems to be an overall densification of the polymer (decrease of the free volume). Full article
(This article belongs to the Special Issue Advances and Applications of Block Copolymers II)
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11 pages, 7386 KiB  
Article
Directed Self-Assembly of Cylinder-Forming Block Copolymers Using Pillar Topographic Patterns
by June Huh
Polymers 2024, 16(7), 881; https://doi.org/10.3390/polym16070881 - 23 Mar 2024
Viewed by 2003
Abstract
We conducted a computational study on the self-assembly behavior of cylinder-forming block copolymers, directed by a guide pattern of hexagonally or tetragonally arrayed pillars, using mesoscale density functional theory simulations. By adjusting the spacing (Lp) and diameter (D) [...] Read more.
We conducted a computational study on the self-assembly behavior of cylinder-forming block copolymers, directed by a guide pattern of hexagonally or tetragonally arrayed pillars, using mesoscale density functional theory simulations. By adjusting the spacing (Lp) and diameter (D) of the pillars in relation to the intrinsic cylinder-to-cylinder distance (L2) of the cylinder-forming block copolymer, we investigated the efficiency of multiple-replicating cylinders, generated by the block copolymer, through the pillar-directed self-assembly process. The simulations demonstrated that at specific values of normalized parameters L˜2=L2/Lp and D˜=D/Lp coupled with suitable surface fields, triple and quadruple replications are achievable with a hexagonally arrayed pillar pattern, while only double replication is attainable with a tetragonally arrayed pillar pattern. This work, offering an extensive structure map encompassing a wide range of possible parameter spaces, including L˜2 and D˜, serves as a valuable guide for designing the contact hole patterning essential in nanoelectronics applications. Full article
(This article belongs to the Special Issue Advances and Applications of Block Copolymers II)
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15 pages, 2370 KiB  
Article
Investigation of Crystallization, Morphology, and Mechanical Properties of Polypropylene/Polypropylene-Polyethylene Block Copolymer Blends
by Wenjun Shao, Li-Zhi Liu, Ying Wang, Yuanxia Wang, Ying Shi and Lixin Song
Polymers 2023, 15(24), 4680; https://doi.org/10.3390/polym15244680 - 12 Dec 2023
Cited by 3 | Viewed by 1942
Abstract
Polyethylene (PE)-based elastomers are the ideal choice for enhancing the compatibility of polypropylene/polyethylene (PP/PE) blends and improving the mechanical properties of PP-based materials. However, the issue of blend systems lies in the interplay between the crystallization processes. Therefore, we investigated the crystallization behavior [...] Read more.
Polyethylene (PE)-based elastomers are the ideal choice for enhancing the compatibility of polypropylene/polyethylene (PP/PE) blends and improving the mechanical properties of PP-based materials. However, the issue of blend systems lies in the interplay between the crystallization processes. Therefore, we investigated the crystallization behavior during the cooling process of a new generation of PP/PE block copolymers (PP-b-PE) and random polypropylene (PPR, a copolymer of propylene and a small amount of ethylene or an alpha-olefin) blends using in-situ X-ray diffraction/scattering and differential scanning calorimetry (DSC) techniques. We also conducted mechanical performance tests on PPR/PP-b-PE blends at room temperature and low temperature (−5 °C). The results indicate that during the cooling process, the PP phase of PP-b-PE will follow the PPR to crystallize in advance and form a eutectic mixture, thereby enhancing the compatibility of PP/PE. Moreover, the PPR/PP-b-PE blend will form stable β-(300) crystals with excellent mechanical properties. Due to the improved compatibility of PP/PE with PP-b-PE, PE crystals are dispersed within PP crystals, providing bonding that improves the toughness of PPR under the low stiffness failure conditions of PPR/PP-b-PE blends, thereby enhancing their impact performance at low and room temperatures. This research has great significance for both recycling waste plastics and enhancing the low-temperature toughness of PPR. Full article
(This article belongs to the Special Issue Advances and Applications of Block Copolymers II)
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