Article
Materials Science, Multidisciplinary
Shaoju Fu, Yonghui Wang, Peixin Tang
Summary: Disinfecting pathogenic microorganisms in water streams efficiently and massively is still a big challenge. Available technologies suffer from irreversible consumption of disinfectants, production of carcinogenic byproducts, and high filtration resistance. In this study, a chlorine rechargeable fiber-supported biocidal porous organic polymer (FPOP) was designed, which showed promising potential for point-of-use water disinfection with superior killing capacity, high filtration flux, and low cost. The chlorinated FPOP demonstrated a high specific surface area, large and rechargeable active chlorine content, long-term stability, and efficient biocidal activity.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hsiu-Wen Chien, Ting-Hsiang Chiu, Yu-Ling Lee
Summary: The study developed a rapid sterilizing coating by co-depositing chlorinated PDA and PEI coatings, which showed improved antibacterial properties and could inactivate a high percentage of S. aureus and E. coli in a short time.
Article
Nanoscience & Nanotechnology
Yue Ma, Nicharee Wisuthiphaet, Nitin Nitin, Gang Sun
Summary: By combining free radical copolymerization reaction and electrospun technology, we have developed a chlorine rechargeable biocidal nanofibrous membrane P(AN-VAPH) with rapid and durable biocidal activity, demonstrating promising disinfecting efficiency against concentrated bacteria-contaminated water during direct filtration applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Selin Kinali-Demirci
Summary: This study successfully synthesized cross-linked polymer brushes containing N-halamine, which were able to inactivate Escherichia coli and Staphylococcus aureus. This provides a new method for preparing antibacterial surfaces.
Article
Materials Science, Multidisciplinary
Jaroslaw Sylwester Syzdek, Marek Marcinek, Maciej Marczewski, Maciej Smolinski, Aldona Zalewska, Anna Szczesna-Chrzan, Wladyslaw Wieczorek
Summary: The scope of this paper is to study the influence of inorganic fillers on the structure of composite polymeric electrolytes based on high-molecular weight poly(oxyethylene). Annealing steps were applied to enhance the transport properties, leading to an increase in ionic conductivities. Combined X-ray diffraction (XRD) and differential scanning calorimetry (DSC) studies were conducted to investigate the changes in phase composition upon annealing.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Multidisciplinary Sciences
Mayu Kawaguchi, Kana Matsumoto, Joji Yoshitomi, Hiroko Otake, Kanta Sato, Atsushi Taga, Tatsuji Sasabe, Kenji Nobuhara, Akira Matsubara, Noriaki Nagai
Summary: In this study, a 10% DEET formulation consisting of 40% ethanol and 2% POE-POP was found to attenuate the skin penetration and prolong the repellent action of DEET without causing stickiness and skin damage.
Article
Chemistry, Applied
Lu Jiang, Zhiqian Jia, Xin Xu, Yili Chen, Wenjuan Peng, Jiamin Zhang, Huimin Wang, Suoding Li, Jianping Wen
Summary: In this study, 5,5-dimethyl-3-(3'-triethoxysilylpropyl)-hydantoin (SPH) was grafted and chlorinated on the surface of poly(ethylene-co-vinyl alcohol) (EVOH) membrane, resulting in improved chlorine content and antibacterial activity. Submerge reaction was found to be more effective than dip-coating reaction for membrane modification, and increasing grafting time and NaClO concentration led to higher chlorine content and enhanced antibacterial activity of the EVOH membrane.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Chemistry, Analytical
Sena Ghayyem, Alexandre Barras, Farnoush Faridbod, Sabine Szunerits, Rabah Boukherroub
Summary: This study investigated the antimicrobial properties of PNPG-PEG NPs, which have high thermal transformation efficiency and can generate cytotoxic ROS in the NIR region. The results showed that NIR light irradiation effectively killed planktonic bacteria and destroyed bacterial biofilms. PNPG-PEG NPs are proven to be an effective nanoplatform for killing pathogenic bacteria.
Article
Biochemistry & Molecular Biology
Noam Y. Steinman, Tan Hu, Aviv Dombrovsky, Meital Reches, Abraham J. Domb
Summary: The N-halamine technology has effectively introduced antiviral functionality into commonly used polymers, showing good antiviral activity against viruses such as T4 bacteriophage and tomato brown rugose fruit virus.
Article
Food Science & Technology
Jiyoon Yi, Kang Huang, Yue Ma, Gang Sun, Glenn M. Young, Nitin Nitin
Summary: This study developed a rechargeable antimicrobial plastic film to reduce cross-contamination of fresh produce. The charged plastic film demonstrated effective reduction of bacterial transfer in cross-contamination experiments and did not cause significant quality loss.
Article
Mechanics
D. Singhal, M. A. Kanso, S. J. Coombs, A. J. Giacomin
Summary: In this study, general expressions for the complex viscosity of poly[ n]catenane suspensions were obtained using general rigid bead-rod theory. The research found that the parts of the complex viscosity for intersecting and interlocking rings matched and showed good agreement with measurements for molten intersecting polystyrene poly[1,3]catenanes.
Article
Chemistry, Physical
Kenichi Nagase, Junnosuke Matsuda, Ayako Takeuchi, Yuka Ikemoto
Summary: The hydration and dehydration behaviors of PNIPAAm-grafted silica beads were analyzed using FTIR spectroscopy. The results showed that the peak intensity and position of the FTIR spectra varied with different relative humidity and temperature conditions, indicating the strong hydration and dehydration properties of PNIPAAm.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Jinjie Chang, Chunlin He, Siping Pang, Jean'ne M. Shreeve
Summary: This study presents the design and synthesis of biocidal materials with excellent properties using the strategy of functional integration. The compounds exhibit superior detonation performance, high decomposition temperature, and improved thermal stability, making them potential candidates for agent defeat weapons.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yingfeng Wang, Joonhoo Jung, Jianchuan Wen, Xuehong Ren, Yuyu Sun
Summary: Ammonia emission poses a serious threat to human and environmental health, especially in developing countries. This study investigated the reactions of ammonia with two monomeric N-halamines in aqueous solution, as well as with mesoporous silica-supported N-halamines in both aqueous and gaseous phases. The results show that one type of N-halamine can completely degrade ammonia in water solution, while another type produces a different major reaction product. Mesoporous silica-supported N-halamines demonstrate the ability to absorb and decompose ammonia in both aqueous and gaseous phases.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Paper & Wood
Yue Ma, Jiaming Li, Shuo Zhang, Peixin Tang, Qingli Dong
Summary: This study reports a scalable approach to modify bacterial cellulose nanofibrous hydrogels with chlorine rechargeable biocidal function, aiming to prolong the vase life of fresh-cut flowers. The modified hydrogel demonstrates high water capacity, acceptable mechanical performance, and good thermal stability. Moreover, it shows significant biocidal efficiency against bacteria and fungi even under high chemical oxygen demand condition.
