Article
Polymer Science
Ke Zheng, Shenggui Chen, Haochun Zhan, Junpeng Situ, Ziying Chen, Xiaxia Wang, Dongdong Zhang, Lei Zhang
Summary: In this study, a strategy for efficient synthesis of phenolic polymers was established by enzymatic polymerization in a nanoreactor. The results indicated that this method could efficiently synthesize phenolic polymers in water and allow for easy separation of the products through temperature control, while the catalyst could be reused.
Article
Chemistry, Multidisciplinary
Lucas W. Teunissen, Andriy R. Kuzmyn, Francesco S. Ruggeri, Maarten M. J. Smulders, Han Zuilhof
Summary: In this study, thermoresponsive poly(N-(2-methacryloyloxyethyl)pyrrolidone) brushes were synthesized and polymerized on silicon oxide substrates via surface-initiated atom transfer radical polymerization. The reversible thermoresponsive behavior of the brushes was demonstrated, and their antifouling properties were tested in aqueous media.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Nael Berri, Tamara Elzein, Diana Dragoe, Ludivine Houel Renault, Nadine Barroca-Aubry, Abdel Wahab Mouhamad, Philippe Roger
Summary: This study increases the specific surface of fiber materials by grafting active polymers and successfully applies them to the capture of lanthanide elements.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Yoshihiko Kimura, Takaya Terashima
Summary: Cation template-assisted RAFT cyclopolymerization can efficiently produce thermoresponsive pseudo-crown ether polymers, including large in-chain ring cyclopolymers and amphiphilic random cyclocopolymers with hydrophilic hexa(ethylene glycol) rings and hydrophobic groups.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Mohamed Aqil, Abdelhafid Aqil, Farid Ouhib, Abdelrahman El Idrissi, Mouad Dahbi, Christophe Detrembleur, Christine Jerome
Summary: By synthesizing organic electrode materials with excellent ionic conductivity and combining redox activity with remarkable ionic conductivity, outstanding charge rate performance was achieved in lithium-ion batteries.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Multidisciplinary Sciences
Jung Y. Han, Sarah Warshawsky, Don L. DeVoe
Summary: The new method of in situ photografting during direct laser writing using two-photon polymerization offers a powerful approach to forming covalent bonds between 3D photoresist structures and thermoplastic surfaces. When applied to microfluidic device fabrication, it can create exceptionally strong adhesion and robust bond interfaces capable of withstanding pressure gradients as high as 7 MPa through proper channel design, photoinitiator selection, and processing conditions.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Julia P. Altarugio, Lucas H. Staffa, Antonio J. F. Carvalho, Juliana M. P. Almeida
Summary: Cellulose is a biopolymer that can be used to develop lightweight, eco-friendly, and biodegradable plastics. Nanofibrillated cellulose (NFC) is particularly interesting due to its mechanical properties. This study investigates the incorporation of NFC with poly(methyl methacrylate) (PMMA) to reduce synthetic polymer usage and develop fiber-reinforced composites. The results show that increasing the NFC content improves the transparency of the film.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Polymer Science
Anatoly E. Chalykh, Vladimir A. Tverskoy, Ali D. Aliev, Vladimir K. Gerasimov, Uliana V. Nikulova, Valentina Yu. Stepanenko, Ramil R. Khasbiullin
Summary: The structural and morphological features of graft polystyrene (PS) and polyethylene (PE) copolymers produced by post-radiation chemical polymerization were investigated using various methods. The study found that as the content of graft PS increases, its concentration increases both in the volume and on the surface of the samples, leading to changes in the copolymer's melting point, glass transition temperature, and degree of crystallinity. The process of PE crystallite decomposition and enrichment of the amorphous phase of the graft polymer by fragments of PE macromolecules during graft polymerization are suggested to be driven by osmotic pressure exerted by the phase network of crystallites on the growing phase of the graft PS.
Article
Chemistry, Physical
Jessica Bassi da Silva, Peter Haddow, Marcos Luciano Bruschi, Michael Thomas Cook
Summary: This article investigates graft copolymers with brush-like architectures containing thermoresponsive monomers. The study explores the chemical structure of the thermoresponsive polymer and its impact on phase behavior and rheological properties. The materials show potential for temperature-responsive applications in the field of medical materials.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Muhammad G. G. Salim, Vaibhav Vasudevan, Nicholas Schulman, Somayeh Zamani, Kyle D. D. Kersey, Yash Joshi, Mohammed AlAmer, Ji Il Choi, Seung Soon Jang, Yong Lak Joo
Summary: Smart materials are versatile and responsive to external stimuli. A recent study presents a graphene fiber-based smart material that exhibits reversible electrical conductivity switching at a low temperature. The change in configuration of amphiphilic triblock dispersant molecules in the graphene fiber during heating or cooling is responsible for this behavior. The scalable, water-based fabrication approach allows for easy modification of material composition ratios.
Article
Materials Science, Multidisciplinary
Xuan Ming Sim, Xiaolu Wu, Atsushi Goto
Summary: Aggregation-induced emission (AIE)-driven fluorescent polymer brushes were fabricated in a patterned manner with different graft-density domains. The fluorescence intensities of the brushes changed depending on the size of the external molecules, with small molecules inducing aggregation and enhancing fluorescence intensity, while large molecules had no significant effect. The molecular weight threshold for external molecules depended on the graft density.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mostafa Badreldin, Rosanna Le Scouarnec, Sebastien Lecommandoux, Simon Harrisson, Colin Bonduelle
Summary: We have discovered that synthetic polymers composed of L-proline monomer units exhibit unique temperature-driven aggregation behavior in water. This behavior, resembling that of proteins, is robust and dependent on the chirality of the proline units. This finding opens up new possibilities for processes driven by changes in temperature or ionic strength, such as the development of a simple memory thermometer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yiyi Liu, Tharaka Perera, Qianqian Shi, Zijun Yong, Sudaraka Mallawaarachchi, Bo Fan, Julia Ann-Therese Walker, Christopher J. Lupton, San H. Thang, Malin Premaratne, Wenlong Cheng
Summary: This study investigates the thermoresponsive chiral plasmonic responses of PNIPAM-modified gold nanorods. The modified nanorods exhibit red shifts and enhanced intensities of plasmonic circular dichroism (PCD) peaks at 50 degrees C, while the unmodified ones show no peak shifts and reduced intensities. The enhanced PCD is attributed to the collapse of PNIPAM chains, resulting in the expulsion of water molecules surrounding the chiral plasmonic nanorods and an increase in refractive index. These thermoresponsive chiral plasmonic responses are reversible, general, and applicable to other types of chiral plasmonic nanoparticles.
Article
Polymer Science
Miki Morimura, Shohei Ida, Masatoshi Oyama, Hiroki Takeshita, Shokyoku Kanaoka
Summary: A thermoresponsive hydrogel with a unique crosslinked domain (CD) structure was designed to exhibit thermoresponsive toughening in an isochoric manner in air, eliminating the need for external water for the transition. The gel's dispersed CDs showed reversible swelling and shrinking in response to temperature changes without aggregation, leading to an increase in elastic modulus and elongation at high temperatures.
Article
Polymer Science
Seung Yeon Lee, Sunhee Kim, Ye Rim Lee, Jaebeom Lee, Woo Kyung Cho, Kyung-sun Son
Summary: Surface-initiated reversible addition-fragmentation chain transfer polymerization using oxygen (O2-SI-RAFT) was used to impart chiral properties to substrates. Chiral monomers were synthesized and grown onto titanium and glass substrates, forming polymer brushes. The presence of polymer brushes was confirmed through various analyses, including ellipsometry, water contact angles, X-ray photoelectron spectroscopy, and atomic force microscopy. By polymerizing block copolymer brushes through chain extension, the chirality of the polymer brushes grown on glass substrate was confirmed using circular dichroism spectroscopy.
EUROPEAN POLYMER JOURNAL
(2023)
