Article
Engineering, Chemical
Mohammed Awad, Ramdhane Dhib, Thomas Duever
Summary: This study investigates the ab initio atom transfer radical polymerization of butyl methacrylate using activator generated by electron transfer in a well-mixed 2 L emulsion reactor. The results showed that reaction temperature has the greatest influence on the process outputs, while surfactant amount and stirring speed strongly affect the conversion rate, and ligand amount strongly affects the Mn and PDI. The temperature-surfactant interaction is the most significant on the conversion rate and Mn.
MACROMOLECULAR REACTION ENGINEERING
(2022)
Article
Materials Science, Paper & Wood
Chuanjie Jiang, Wenting Fan, Nan Zhang, Guangqi Zhao, Wenxiang Wang, Liangjiu Bai, Hou Chen, Huawei Yang
Summary: Self-healing nanocomposite hydrogels were fabricated using functional cellulose nanocrystals (CNCs), which displayed outstanding self-healing and mechanical strength properties, providing a convenient strategy for the design and development of CNC-based functional materials.
Article
Thermodynamics
Lina Dayse Alcantara Rodrigues, Lilia Muller Guerrini, Mauricio Pinheiro de Oliveira
Summary: The study found that with an increase in the content of cationic cassava starch (CCS), the grafting percentage of the polymer film decreased, and the thermal and mechanical properties showed a direct relationship with the CCS content and grafting percentage. Higher grafting percentage improved thermal stability but reduced elongation at break.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Polymer Science
Stanislaw Sosnowski, Ryszard Szymanski, Francesca Lorandi, Mateusz Olszewski, Julian Sobieski, Rongguan Yin, Michael R. Bockstaller, Krzysztof Matyjaszewski
Summary: Numerical simulations showed that statistical copolymers with 1:1 BA/MMA composition have the highest contribution of alternating sequences, while batch ATRP of a 1:1 BA/MMA mixture generates gradient copolymers with diminished fraction of alternating sequences. A method for preparing statistical BA/MMA copolymers with the highest fraction of alternating sequences through normal ATRP copolymerization with MMA feeding was proposed to maximize the amount of alternating sequences in the copolymers.
Article
Polymer Science
Aurelie Destephen, Nicholas Ballard
Summary: Cationic polymerization of vinyl monomers in water is limited due to carbocations reactivity towards water and the sensitivity of Lewis acid catalysts to water, but using water tolerant Lewis acid catalysts allows for polymer synthesis in dispersed media. The polymerizations in dispersed media proceed under pseudo-bulk conditions, with the molar mass dependent on water content and the rate of chain transfer to water.
Article
Polymer Science
Seina Hiroshige, Haruka Minato, Yuichiro Nishizawa, Yuma Sasaki, Takuma Kureha, Mitsuhiro Shibayama, Kazuya Uenishi, Toshikazu Takata, Daisuke Suzuki
Summary: The study shows that tough latex films can be obtained by forming films at temperatures higher than the glass-transition temperature of microspheres and then annealing. The relationship between interfacial thickness and fracture energy can be influenced by adjusting the annealing time.
Article
Materials Science, Multidisciplinary
Ivan Hevus, Prakash Kannaboina, Yiqiu Qian, Jingbo Wu, Melody Johnson, Luke R. Gibbon, John J. La Scala, Chad Ulven, Mukund P. Sibi, Dean C. Webster
Summary: The capability of six bioderived furanic (meth)-acrylates as reactive diluents in stereolithography resin compositions has been successfully demonstrated. These furanic diluents, produced from a biobased platform chemical, can reduce the viscosity of commercial stereolithography resins and participate in photocuring with high conversion of polymerizable groups, while satisfying performance requirements. Compared to petroleum-based difunctional diluents, several furanic acrylate and methacrylate monomers offer significantly improved thermal and mechanical properties.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Chemistry, Physical
Mohammed Awad, Ramdhane Dhib, Thomas Duever
Summary: This review paper discusses the experimental work and modern technologies used in emulsion AGET ATRP, as well as the fundamentals and recent advances in understanding the complex mechanism of this technique.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Soheila Javadian, Mehrdad Bahri, S. Morteza Sadrpoor, Zahra Rezaei, Jamal Kakemam
Summary: This study investigates the dehydration of crude oil using various cationic surfactants and MgO nanoparticles. The results show that the concentration and type of surfactant play a crucial role in the dehydration process. Additionally, the mixture of MgO nanoparticles and surfactants enhances the dehydration efficiency. Quantum calculations reveal the strong interaction between MgO and asphaltene in the crude oil.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Tucker J. McKenzie, Thomas Brunet, Lyndsay N. Kissell, Pietro Strobbia, Neil Ayres
Summary: This study presents the synthesis of porous polymers with controlled porosity values and mechanical properties using emulsion-templated polymerizations. The materials prepared with reactive surfactants showed higher storage modulus and lower longitudinal sound speeds, making them suitable candidates in the preparation of acoustic devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Eman Alzahrani, Hala M. Abo-Dief, Faouzia Algethami
Summary: This study analyzed the performance of a corrosion resistant coating made from Fe3O4 nanoparticles and PBMA-gft-Alg/Fe3O4 nanocomposite. Factors such as HCl molarities, temperature, and immersion time greatly influenced the corrosion rate of carbon steel. Electrochemical studies revealed the optimum conditions for preventing corrosion and the efficiency of the coatings varied among the two combinations, with PBMA-gft-Alg/Fe3O4 nanocomposite being more effective.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Chemical
Yu Ding, Guosheng Ai, Jinliang Du, Guangming Yu, Lu Lai, Xuemin Yan, Weichu Yu, Yuanzhu Mi
Summary: In this study, an efficient Gemini ionic liquid demulsifier Y12 was synthesized and showed promising potential for applications. Y12 achieved 100% demulsification efficiency in 120 minutes at 50 degrees C, and exhibited good performance under different oil content and pH, salinity conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Polymer Science
Masa Alrefai, Victoria Meola, Milan Maric
Summary: Homo and statistical copolymerization reactions of ethylene glycol dicyclopentenyl ether methacrylate (EGDEMA) and a vegetable-oil based methacrylic ester C13MA (average alkyl chain length = 13) are successfully studied via activator regenerated electron transfer polymerization (ARGET ATRP) using trace amounts of copper catalyst. The resulting polymer materials have clean synthesis, monomodal molecular weight distribution, and microphase separation properties. Furthermore, the materials can be crosslinked by UV thiol-ene clicking reaction with high conversion rates.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Inna Berezovska, Katya Kapilov, Prachi Dhavalikar, Elizabeth Cosgriff-Hernandez, Michael S. Silverstein
Summary: PolyHIPEs are highly porous polymers synthesized within high internal phase emulsions, while Pickering HIPEs are an alternative stabilization strategy using solid nanoparticles. The successful design of an HIPE stabilization system based on a combination of nanoparticles and reactive surfactants generates the desired surface functionality and low leachable content.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Chemistry, Applied
Gokhan Akbulut, Hayal Bulbul Sonmez
Summary: This study investigates the modification of latex polymers to improve paint performance. Different functional monomers are added to styrene and n-butyl acrylate latex polymers to enhance scrub resistance, adhesion on surfaces, and control hydrophobicity and color efficiency of the paints. The results confirm that the addition of these functional monomers improves the paint properties.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2022)
Article
Polymer Science
Antonina Simakova, Saadyah Averick, Arman Moini Jazani, Krzysztof Matyjaszewski
Summary: This article reports a method for preparing cationic nanogels by atom transfer radical polymerization under inverse microemulsion conditions. The use of a hydrophilic inimer prevents the growth of droplets during polymerization. The surface functionality of the nanogels can be modulated by applying different reactive surfactants or grafting hydrophilic shells. The synthesized cationic nanogels are biocompatible and have a high complexation ability for plasmid DNA.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Chuao Ma, Jun Wei, Yuqiang Zhang, Xingchao Chen, Chan Liu, Shen Diao, Yuan Gao, Krzysztof Matyjaszewski, Hongliang Liu
Summary: Currently, there is a significant challenge in meeting the increasing demands for conductive ionogels with complex shapes and high processability for next-generation flexible electronics. In this study, highly processable ionogels with mechanical robustness are designed by self-assembly of a common triblock copolymer into a precursor in functional mixed ionic liquids. The viscosity of the self-assembled precursor can be adjusted, making it compatible with various fabrication technologies. By using 3D printing, an auxetic-structured ionogel is easily generated, showing improved sensitivity for monitoring small deformations. This research establishes a new approach for versatile and programmable fabrication of high-performance ionogels, focusing on designing functional mixed ionic liquids rather than synthesizing new polymers.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mateusz Olszewski, Xiaolei Hu, Ting-Chih Lin, Krzysztof Matyjaszewski, Natalia Lebedeva, Philip Taylor
Summary: Star polymers were synthesized via ARGET ATRP and used as effective stabilizers for Pickering emulsions. The interfacial properties of PEO stars adsorbed at oil-water interfaces were investigated using interfacial tension and interfacial rheology. The results offer important insights into the interfacial rheology of PEO star polymers in the context of their application as stabilizers for Pickering emulsions.
Article
Polymer Science
Kriti Kapil, Arman Moini Jazani, Grzegorz Szczepaniak, Hironobu Murata, Mateusz Olszewski, Krzysztof Matyjaszewski
Summary: Photoinduced ATRP techniques using green light and dual catalysis have been developed for efficient and controlled polymerization. This method allows rapid synthesis of well-defined polymers without the need for deoxygenation, overcoming the limitations of UV light-induced polymerization. The system also enables temporal control and synthesis of various hydrophilic acrylate monomers.
Article
Polymer Science
Guanyi Hou, Yingxue Hao, Ruifeng Jiang, Sai Li, Yonglai Lu, Jun Liu, Liqun Zhang, Krzysztof Matyjaszewski
Summary: The rapidly developing aerospace industry has a severe requirement for rubber components utilized for spacecraft, especially the resistance to extreme temperature differences because of the complex space environment. However, it is difficult to increase the service temperature range of the existing elastomeric materials based on traditional methods. By introducing a new type of long-side chain siloxane, a novel silicone elastomer with an unprecedented wide temperature range (-149-400°C) is designed, which does not introduce other heteroatoms.
Article
Polymer Science
Yi Wang, Francesca Lorandi, Marco Fantin, Krzysztof Matyjaszewski
Summary: Polymerizations in aqueous dispersed media benefit from good heat transfer, low viscosity, low content of volatile compounds, and established industrial use. The implementation of ATRP in dispersed media has highlighted the possibility of achieving improved livingness and producing a variety of macromolecular architectures. ATRP techniques employing low-ppm catalyst loadings have enabled access to a larger variety of polymer architectures and functional polymer particles, which have found applications in molecular recognition, drug delivery, bio-quantification, and advanced coatings.
Article
Polymer Science
Yuqi Zhao, Rongguan Yin, Hanshu Wu, Zongyu Wang, Yue Zhai, Khidong Kim, Changwoo Do, Krzysztof Matyjaszewski, Michael R. Bockstaller
Summary: Van der Waals-driven self-healing in copolymers with lock-and-key architecture has been achieved by synthesizing lock-and-key copolymers with prescribed sequences. The recovery behavior of copolymers with different sequences was evaluated, and copolymers with alternating and statistical sequences showed a 10-fold increase in recovery rate compared to copolymers with a gradient sequence. The results provide strategies for designing and synthesizing engineering polymers with both structural and thermal stability and the ability to recover from structural damage.
Article
Chemistry, Multidisciplinary
Jaepil Jeong, So Young An, Xiaolei Hu, Yuqi Zhao, Rongguan Yin, Grzegorz Szczepaniak, Hironobu Murata, Subha R. Das, Krzysztof Matyjaszewski
Summary: This study presents an approach to convert biomass RNA into an acrylic crosslinker by acyl imidazole chemistry, allowing for the fabrication of materials with tunable properties. It also explores reversible-deactivation radical polymerization methods and metallization of the biomass RNA-based material, expanding the opportunities in biomass-based biomaterial fabrication.
Article
Chemistry, Physical
Yuqi Zhao, Hanshu Wu, Rongguan Yin, Chenxi Yu, Krzysztof Matyjaszewski, Michael R. Bockstaller
Summary: The effect of sequence structure on the self-healing and shape-memory properties of copolymer-tethered brush particle films was investigated. It was found that statistical copolymer sequence provided the most rapid restoration of mechanical properties and an increase of the high T(g) (MMA) component improved the material's modulus while retaining self-healing ability. The reduction of flow in brush systems was attributed to slow cooperative relaxation due to the complex microstructure.
CHEMISTRY OF MATERIALS
(2023)
Article
Polymer Science
Martin Cvek, Arman Moini Jazani, Julian Sobieski, Thaiskang Jamatia, Krzysztof Matyjaszewski
Summary: ZnO nanocrystals were successfully synthesized and used as a heterogeneous co-catalyst in mechano- and photoATRP. The photoATRP with ZnO exhibited faster reaction kinetics compared to mechanoATRP and did not require excess ligand. This study demonstrated the versatility and robustness of ZnO-cocatalyzed photoATRP for various monomers.
Article
Polymer Science
Julian Sobieski, Sajjad Dadashi Silab, Lucas Thevenin, Krzysztof Matyjaszewski, Christophe Fliedel, Rinaldo Poli
Summary: The termination processes of the tertiary carbomethoxyisopropylradical, (COOMe)Me2C & BULL;, were investigated by H-1 NMR. The investigation assessed the contributions of the Cu-I/L-catalyzed radical termination (CRT) and the reductive radical termination (RRT) to the spontaneous bimolecular radical terminations (RT). It also reassessed the product distribution for the RT of the diffused and caged radicals obtained from the thermal activation of V-601.
Article
Polymer Science
Krzysztof Jerczynski, Julita Muszynska, Gokhan Demirci, Onur Cetinkaya, Paulina Filipczak, Grzegorz Nowaczyk, Jaroslaw Grobelny, Krzysztof Matyjaszewski, Marcin Kozanecki, Joanna Pietrasik
Summary: This work reports on the efficient performance of hybrid particles with silver nanoparticles distributed within single polymer molecules as Surface Enhanced Raman Scattering (SERS) supports. Through controlled synthesis methods and structure parameters of polymer templates, the researchers successfully synthesized hybrid particles with star-like topology and achieved stable detection of analytes at nanomolar level.
Article
Polymer Science
Rongguan Yin, Yuqi Zhao, Jaepil Jeong, Jirameth Tarnsangpradit, Tong Liu, So Young An, Yue Zhai, Xiaolei Hu, Michael R. Bockstaller, Krzysztof Matyjaszewski
Summary: Gradient copolymer brush nanoparticles with different compositional ratios were synthesized from surface-modified silica nanoparticles, and they demonstrated better mechanical properties and uniform microstructures.
Article
Chemistry, Multidisciplinary
Izabela Zaborniak, Martyna Korbecka, Zuzanna Michno, Pawel Chmielarz, Krzysztof Matyjaszewski
Summary: In this study, a high molecular weight water-soluble polymer was synthesized through polymerization in a vegetable oil-based inverse emulsion, resulting in low dispersity and high molecular weight. This approach offers advantages in terms of environmental friendliness and can replace toxic organic solvents.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Kostas Parkatzidis, Nghia P. Truong, Krzysztof Matyjaszewski, Athina Anastasaki
Summary: A photocatalytic ATRP depolymerization method is introduced, which lowers the reaction temperature and enables temporal control, achieving high monomer recovery and end-group fidelity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)