Article
Polymer Science
Andrei A. Korigodskii, Artem E. Zhirnov, Alexander S. Kechekyan, Sergey B. Zezin
Summary: Polymer blends obtained by polymerization of methyl methacrylate in the presence of poly(propylene glycol) were investigated. Poly(propylene glycol) acts as a plasticizer, significantly affecting the properties of the material. The addition of poly(propylene glycol) allows for easy control of the properties of poly(methyl methacrylate) within a wide range.
Article
Chemistry, Multidisciplinary
Glendimar Molero, Cong Liu, Zewen Zhu, Qihui Chen, Suzanne R. Peterson, Pavan Kolluru, Hung-Jue Sue, Shuntaro Uenuma, Koichi Mayumi, Kohzo Ito
Summary: The fracture behavior of polyrotaxane (PR)-modified poly(methyl methacrylate) (PMMA) was investigated. By adding only 1 wt % of PR to the PMMA matrix, substantial improvement in fracture toughness was achieved while maintaining modulus and transparency. The interaction between PR and PMMA contributes to higher molecular mobility and enhanced molecular cooperativity, leading to the formation of massive crazing and improved fracture toughness.
Article
Engineering, Chemical
Mun Suk Seong, Hyun Jung Yu, Seong Yong Ha, Won Seok Chang, Hyung-Ju Kim, Jong Suk Lee
Summary: In this study, highly CO2-permeable membranes were obtained by blending micellar-structured poly(poly(ethylene glycol) methyl ether acrylate) (PPEGMEA) with poly(ether-block-amide) (Pebax). The blend membrane showed a significant enhancement in CO2 permeability while maintaining good CO2 selectivity and long-term separation performance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Haifeng Zhang, Chungang Dong, Xiangyan Han, Yuanyuan Han, Fengyang Zhao, Nan Yan, Yuexin Hu, Guiyan Zhao
Summary: Poly(butyleneadipate-co-terephthalate) (PBAT) was used to toughen poly(lactic acid) (PLA) with the addition of poly(methyl methacrylate)-poly(butyl acrylate)-poly(methyl methacrylate) (MAM) through melt blending. The impact toughness and tensile toughness of the PLA/PBAT/MAM ternary blends were greatly enhanced when the MAM content was higher than 5%. The synergistic toughening effect of MAM and PBAT on PLA was observed, improving the compatibility and interfacial adhesion between PLA and PBAT, thus significantly enhancing the overall mechanical properties of PLA blends.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Kohei Sano, Koki Umemoto, Haruka Miura, Satoshi Ohno, Kyohei Iwata, Rin Kawakami, Masayuki Munekane, Toshihide Yamasaki, Daniel Citterio, Yuki Hiruta, Takahiro Mukai
Summary: Poly[oligo(ethylene glycol) methyl ether methacrylate] (POEGMA) was investigated as a potential drug carrier for tumor diagnosis. Different derivatives of POEGMA with varying molecular weights and side chain lengths were synthesized and labeled with radioisotopes or fluorescence dyes. The results showed that the POEGMA derivatives were efficiently taken up by tumor cells and exhibited high accumulation in tumor tissues. In vivo fluorescence imaging using optimized POEGMA derivatives confirmed their suitability as drug carriers for sensitive tumor diagnosis.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Elisa Guazzelli, Matteo Oliva, Carlo Pretti, Gianfranca Monni, Armand Fahs, Christine Bressy, Elisa Martinelli
Summary: Hydrolyzable block copolymers consisting of polyethylene glycol and poly(trialkylsilyl methacrylate-co-methyl methacrylate) were synthesized and their hydrolysis performance and erosion behavior in artificial seawater were studied. The results showed that the copolymer film surfaces could respond to the water environment and demonstrated antifouling behavior against diatoms.
Article
Materials Science, Composites
Hui Li, Rong Luo, Jianbo Qu
Summary: Inspired by mussel chemistry, a facile and eco-friendly method to synthesize silver nanoparticles using dopamine as a reductant and stabilizer was presented. The silver nanoparticles were further introduced to acrylic copolymers to form nanocomposite films with antibacterial and self-healing properties.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Maria del Prado Garrido, Ana Maria Borreguero, Francisco Javier Redondo, David Padilla, Manuel Carmona, Maria Jesus Ramos, Juan Francisco Rodriguez
Summary: In this study, St-MMA particles with PEGMA and/or GMA brushes were synthesized and found to effectively remove bilirubin by improving the BSA immobilization capacity and reducing processing time. Attachment of BSA to the particles reduced bilirubin concentration in plasma from levels that threaten patient survival to levels close to those of healthy individuals.
Article
Chemistry, Physical
Seyedeh-Arefeh Safavi-Mirmahalleh, Svetlana N. Eliseeva, Amir Rezvani Moghaddam, Hossein Roghani-Mamaqani, Mehdi Salami-Kalajahi
Summary: Polymer electrolytes based on natural materials such as cellulose have been used for lithium-ion batteries due to their cheapness, compatibility with the environment, and electron-donating groups in their structure. Grafting ion-conducting segments onto cellulose can enhance the ionic conductivity of the electrolyte.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Polymer Science
Sang-In Lee, Min-Guk Seo, June Huh, Hyun-jong Paik
Summary: The temperature dependence of the Flory-Huggins interaction parameter chi for PBA-b-PMMA was quantified using SAXS analysis and RPA theory. The enthalpic contribution of chi was found to be 1.7-4.5 times smaller for PBA-b-PMMA compared to styrene-diene-based block copolymers. This suggests that these fully acrylic components are desirable for constituting terpolymers used in thermally stable and mechanically resilient elastomers.
Article
Polymer Science
Corina Logigan, Christelle Delaite, Crina-Elena Tiron, Cristian Peptu, Marcel Popa, Catalina Anisoara Peptu
Summary: Chitosan hydrogels were prepared by chemical modification and double crosslinking in a water/oil emulsion. The modified chitosan showed better control of dimensional properties and morphology compared to neat chitosan. In addition, the modified hydrogels exhibited pH-dependent behavior and demonstrated excellent capacity for drug loading and release, making them suitable for controlled release applications in biomedicine.
Article
Polymer Science
Naruki Kurokawa, Fuyuaki Endo, Kenta Bito, Tomoki Maeda, Atsushi Hotta
Summary: The study focused on solidifying PMEA through copolymerization with PMMA to enhance coating stability, while also expanding PMEA's application range. The new triblock copolymers demonstrated excellent antithrombogenic properties and improved tensile strength compared to previous studies on solidified PMEA.
Article
Thermodynamics
Bilge Eren, Hulya Cinar, Beyhan Erdogan
Summary: In this study, a series of hydroxyl functionalized styrene acrylate latex particles were prepared using the seeded emulsion polymerization method, and the effect of anionic/nonionic surfactant on their morphology and thermal behaviors was investigated.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Polymer Science
Hamza Mahmoud Aboelanin, Stepan Podzimek, Vladimir Spacek
Summary: This study focuses on the detailed characterization of the molecular structure and dilute solution properties of highly dense star-like polymers of poly(methyl methacrylate) and poly(n-butyl methacrylate). The comparison of refractive index increment with corresponding linear homopolymers was conducted. The prepared polymers were characterized using size exclusion chromatography, multi-angle light scattering detector, and online viscometer. The obtained data allowed for the determination of arm distribution, average number of arms per molecule, and molar mass dependency of the draining factor. The relation between the number of arms per molecule and molar mass was estimated and compared with true values.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Katarzyna Chat, Wenkang Tu, Aparna Beena Unni, Karolina Adrjanowicz
Summary: Tacticity has a significant impact on the segmental dynamics of confined polymer films, with syndiotactic PMMA requiring a higher temperature for glass transition compared to isotactic PMMA. Isotactic PMMA shows greater sensitivity to pressure/density changes in glass-transition dynamics, while syndiotactic PMMA has a stronger interaction with the substrate.
Article
Polymer Science
Ignacio E. dell'Erba, Gustavo F. Arenas, Walter F. Schroeder
Article
Chemistry, Multidisciplinary
Julieta Puig, Ileana A. Zucchi, Marcelo Ceolin, Walter F. Schroeder, Roberto J. J. Williams
Article
Materials Science, Multidisciplinary
Walter F. Schroeder, Roberto J. J. Williams, Cristina E. Hoppe, Hernan E. Romeo
JOURNAL OF MATERIALS SCIENCE
(2017)
Article
Chemistry, Multidisciplinary
Ignacio E. dell'Erba, Francisco D. Martinez, Cristina E. Hoppe, Guillermo E. Elicabe, Marcelo Ceolin, Ileana A. Zucchi, Walter F. Schroeder
Article
Materials Science, Multidisciplinary
Romina P. Ollier, Marianela Victorel, Gustavo F. Arenas, Patricia A. Oyanguren, Maria J. Galante, Walter F. Schroeder
MACROMOLECULAR MATERIALS AND ENGINEERING
(2017)
Article
Chemistry, Physical
J. Puig, M. Ceolin, R. J. J. Williams, W. F. Schroeder, I. A. Zucchi
Article
Chemistry, Physical
Romina P. Ollier, David A. D'Amico, Walter F. Schroeder, Viviana P. Cyras, Vera A. Alvarez
APPLIED CLAY SCIENCE
(2018)
Article
Polymer Science
U. M. Montoya Rojo, C. C. Riccardi, M. D. Ninago, A. E. Ciolino, M. A. Villar, M. Ceolin, I. A. Zucchi, W. F. Schroeder
EUROPEAN POLYMER JOURNAL
(2019)
Article
Polymer Science
Ruth N. Schmarsow, Ulises Casado, Marcelo Ceolin, Ileana A. Zucchi, Alejandro J. Mueller, Walter F. Schroeder
Summary: There is increasing interest in the study of supramolecular networks formed by self-assembly of amphiphilic molecules due to their responsive behavior to external stimuli. Embedding these networks into polymer matrices can lead to functional polymers with various applications. This study investigates the behavior of supramolecular networks in a rubbery polymer matrix and reveals the influence of diffusional and topological limitations on the dynamics and crystallization within the network. Mechanical tests show that the deformation capacity of these materials can be precisely tuned by programming the temperature within the melting range of the supramolecular network.
Article
Chemistry, Physical
Jessica Gutierrez Gonzalez, Marcelo Ceolin, Walter F. Schroeder, Ileana A. Zucchi
Summary: This study synthesized one-dimensional PEO nanocrystals through self-assembly of PS-b-PEO and found that the morphology of the nanocrystals was dependent on the type of block copolymer and reaction conditions.
Article
Chemistry, Physical
Jessica Gutierrez Gonzalez, Marcos D. Fernandez Leyes, Hernan A. Ritacco, Walter F. Schroeder, Ileana A. Zucchi
Summary: By utilizing the self-assembly of amphiphilic block copolymers, a distribution of elongated crystalline nanodomains in a PS matrix was achieved. The nanostructures were obtained through microphase separation and crystallization of PEO blocks, resulting in a population of nanoribbons dispersed in the matrix.
Article
Chemistry, Multidisciplinary
Ruth N. Schmarsow, Ignacio E. dell'Erba, Micaela S. Villaola, Cristina E. Hoppe, Ileana A. Zucchi, Walter F. Schroeder
Article
Chemistry, Physical
Ruth N. Schmarsow, Marcelo Ceolin, Ileana A. Zucchi, Walter F. Schroeder
Article
Chemistry, Physical
Nancy M. Cativa, M. Soledad Alvarez Cerimedo, Julieta Puig, Gustavo F. Arenas, Fernando Trabadelo, M. Alejandra Ayude, Maximiliano A. Zensich, Gustavo M. Morales, Walter F. Schroeder, Hernan E. Romeo, Cristina E. Hoppe
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2019)
Article
Nanoscience & Nanotechnology
Julieta Puig, Ignacio E. dell' Erba, Walter F. Schroeder, Cristina E. Hoppe, Roberto J. J. Williams
ACS APPLIED MATERIALS & INTERFACES
(2017)