Article
Chemistry, Physical
P. Sharma, F. Ponte, M. J. Lima, N. M. Figueiredo, J. Ferreira, S. Carvalho
Summary: Polymers are widely used due to their distinct properties. The metallization of polymers with Cr coatings allows them to replace metal parts in the automotive industry. However, obtaining high-quality metallized polymer surfaces is challenging. To overcome this, plasma etching treatments were performed on PC substrates before Cr coating deposition. The best plasma etching treatments significantly improved the Cr coating quality.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Shankar Dutt, Pavel Apel, Nikolay Lizunov, Christian Notthoff, Qi Wen, Christina Trautmann, Pablo Mota-Santiago, Nigel Kirby, Patrick Kluth
Summary: High aspect-ratio nanopores with nearly cylindrical geometry were fabricated by ion irradiation and etching, with the shape of the nanopores tapering towards the polymer surfaces. Using SAXS, the tapered structure was quantitatively measured, and it was found that the etch rates slightly decrease with increasing fluence. The observed nanopore shape was found to significantly influence the pore transport properties, with water flow rates being affected compared to cylindrical pores.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Zaichao Guo, Yujing Wang, Zhihao Liang, Zhenhua Zhang, Jianjun Xie, Xiaoyu Gui, Borui Hou, Dan Mo, Liang Lu, Huijun Yao
Summary: Due to the increase in oil spills and high organic contamination, a low-cost and efficient oil/water separation technology is necessary. Membrane separation technology, specifically PET ion track-etched membranes modified with hydrophobic propyl groups, was found to have a water contact angle of 140.81° and exhibited excellent hydrophobic properties. The modified membranes showed a high oil/water separation ratio of 99.87% and a flux of 12,158.24 L/m(2)center dot h with good running stability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Lisa Wiedenhoeft, Mohamed M. A. Elleithy, Mathias Ulbricht, Felix H. Schacher
Summary: Surface grafting of polyelectrolytes on porous membranes shows promising potential for removing pollutants from water and has adsorption capabilities; The polyelectrolyte-functionalized membranes exhibit responses to pH and the presence of Cu2+ ions; Experimental results demonstrate that grafted polyelectrolytes can effectively adsorb model dyes.
Article
Materials Science, Multidisciplinary
Arnoux Rossouw, Olga Kristavchuk, Andrzej Olejniczak, Chris Bode-Aluko, Boris Gorberg, Alexander Nechaev, Leslie Petrik, Willem Perold, Pavel Apel
Summary: The study investigated the surface modification of polyethylene terephthalate track-etched membranes using planar magnetron sputtering of titanium and titanium dioxide thin films to improve hydrophilicity and photocatalytic activity. The deposited thin films showed reduced pore diameter and complex composition. Both Ti and TiO2-Ti sputtering significantly decreased water contact angle, enhancing membrane hydrophilicity and self-cleaning properties. This approach demonstrated effectiveness in improving porous polymeric support properties.
Article
Chemistry, Physical
Kuan-Wei Lu, Yu-Tian Lin, Hung-Sen Wei, Chien-Cheng Kuo
Summary: This study successfully achieved superhydrophilicity modification of polycarbonate substrates through plasma treatment and polymer coating, improving their anti-fog and self-cleaning performance. Different levels of hydrophilicity can be reached by adjusting treatment parameters.
Article
Physics, Multidisciplinary
T. S. Soliman, Sh Elkalashy, M. F. Zaki, Doaa H. Shabaan
Summary: The study found that gamma-doses impact the chemical bond strength and optical absorption properties of irradiated films. Surface roughness increased, optical parameters changed, and photoemission properties were also affected after irradiation.
Article
Chemistry, Physical
Seungju Seo, Sanha Kim, Shun Yamamoto, Kehang Cui, Takashi Kodama, Junichiro Shiomi, Taiki Inoue, Shohei Chiashi, Shigeo Maruyama, A. John Hart
Summary: This paper investigates the tailored use of Ar/O-2 plasma etching to modify the surface morphology of multi-walled CNT forests, studying the effects of process parameters on the etching, as well as the influence of different initial characteristics on the etching results. The study also explores the enhancement of alignment and chemical uniformity of the top surface of CNT forests by Ar/O2 plasma.
Review
Polymer Science
Arman B. Yeszhanov, Ilya Korolkov, Saule S. Dosmagambetova, Maxim Zdorovets, Olgun Guven
Summary: Membrane distillation (MD) is a rapidly developing field used in desalination, purification, and concentration. This review focuses on recent studies regarding MD processes, membrane types, hydrophobization methods, and the use of track-etched membranes (TeMs), emphasizing their importance in water purification and concentration.
Article
Polymer Science
Yuki Hashimoto
Summary: A new bonding method using vacuum ultraviolet (VUV) light with a wavelength shorter than 160 nm is proposed. The results of surface analysis and bonding tests confirm that this method can bond different materials, which has not been reported before.
Article
Chemistry, Multidisciplinary
Emily Schifano, Gianluca Cavoto, Francesco Pandolfi, Giorgio Pettinari, Alice Apponi, Alessandro Ruocco, Daniela Uccelletti, Ilaria Rago
Summary: The emergence of multidrug-resistant bacteria is a growing threat to public health, necessitating the development of non-antibiotic antibacterial approaches. In this study, vertically aligned carbon nanotubes (VA-CNTs) with controlled nanomorphology were proposed as effective platforms for bacteria eradication. Through a combination of microscopic and spectroscopic techniques, the topography of VA-CNTs was tailored in a controlled and time-efficient manner using plasma etching processes. The highest reduction in cell viability was observed for VA-CNTs modified using plasma etching with Ar and O-2, indicating their potential as a surface for inactivating both planktonic and biofilm infections.
Article
Biochemistry & Molecular Biology
Indira B. Muslimova, Zh K. Zhatkanbayeva, Dias D. Omertasov, Galina B. Melnikova, Arman B. Yeszhanov, Olgun Guven, Sergei A. Chizhik, Maxim V. Zdorovets, Ilya V. Korolkov
Summary: We developed a method for preparing pH-responsive tracketched membranes using poly(ethylene terephthalate) (PET) for separating water-oil emulsions. The membranes showed hydrophobicity at pH 7-9, and pH-responsive behavior at pH 2 due to the protonated grafted layer of poly-4-vinylpyridine (P4VP). The membranes with controlled hydrophobic-hydrophilic properties successfully separated direct and reverse oil-water emulsions with a purification degree of 95-100%.
Article
Engineering, Chemical
Shun Aoyama, Hiroki Nagasawa, Masakoto Kanezashi, Toshinori Tsuru
Summary: The effects of plasma treatment time on the gas permeation and pervaporation dehydration properties of organosilica membranes were investigated. The study found that increasing plasma modification time resulted in a decrease in pore size, leading to an increased He/N2 permeance ratio. The H2O/EtOH permeance ratio also increased from about 20 to over 1000 as the plasma modification time increased due to changes in pore structure and water adsorption properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Aleem Zahid, Hyeongsik Park, Young Hyun Cho, Junsin Yi
Summary: Treatment of PMMA can increase its transmittance by approximately 4% across a broad spectrum, and when applied as a front cover sheet on a solar cell, treated PMMA can enhance short circuit current and efficiency, indicating improved optical and electrical characteristics for photovoltaic applications.
Article
Chemistry, Physical
Yifan Wang, Zhongqi Liu, Matthew P. Confer, Junhao Li, Ruigang Wang
Summary: In this study, CeO2 nanorods were chemically etched and transition metal oxides were loaded on the surface to prepare catalysts. Results showed that the etching process enhanced low-temperature reducibility and catalytic performance, and the effect of CO adsorption mode on CO oxidation activity was discussed.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Physical
Nathan D. Burrows, Ariane M. Vartanian, Nardine S. Abadeer, Elissa M. Grzincic, Lisa M. Jacob, Wayne Lin, Ji Li, Jordan M. Dennison, Joshua G. Hinman, Catherine J. Murphy
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2016)
Article
Chemistry, Multidisciplinary
Nathan D. Burrows, Wayne Lin, Joshua G. Hinman, Jordan M. Dennison, Ariane M. Vartanian, Nardine S. Abadeer, Elissa M. Grzincic, Lisa M. Jacob, Ji Li, Catherine J. Murphy
Article
Chemistry, Multidisciplinary
Alaaldin M. Alkilany, Sara Mansour, Hamza M. Amro, Beatriz Pelaz, Mahmoud G. Soliman, Joshua G. Hinman, Jordan M. Dennison, Wolfgang J. Parak, Catherine J. Murphy
JOURNAL OF CHEMICAL EDUCATION
(2017)
Article
Chemistry, Multidisciplinary
Jordan M. Dennison, Jennifer M. Zupancic, Wayne Lin, Jonathan H. Dwyer, Catherine J. Murphy
Article
Engineering, Chemical
Brendan D. Tompkins, Jordan M. Dennison, Ellen R. Fisher
JOURNAL OF MEMBRANE SCIENCE
(2013)
Article
Instruments & Instrumentation
Xu Xie, Jordan M. Dennison, Jungwoo Shin, Zhu Diao, David G. Cahill
REVIEW OF SCIENTIFIC INSTRUMENTS
(2018)
Article
Nanoscience & Nanotechnology
Xiaohui Song, John W. Smith, Juyeong Kim, Nestor J. Zaluzec, Wenxian Chen, Hyosung An, Jordan M. Dennison, David G. Cahill, Matthew A. Kulzick, Qian Chen
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Nanoscience & Nanotechnology
Jordan M. Dennison, Xu Xie, Catherine J. Murphy, David G. Cahill
ACS APPLIED NANO MATERIALS
(2018)
