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
Physics, Applied
Guo-Qiang Li, Xi Chen, Yan-Rong Zhu, Hong-Lin Guo, Ni Zhao, Zheng-Shi Chang
Summary: Experimental results showed that the modification effect range of atmospheric pressure plasma jets (APPJ) on the surface of low-density polyethylene (LDPE) film is larger than its actual spread range. The surface properties did not change monotonously along the radial direction, but had extreme points: the change of surface morphology was first etching and then deposition. Moreover, the incorporation of oxygen-containing functional groups by APPJ into the LDPE surface was observed, with differences in their distributions on the surface.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Elisa Sainz-Garcia, Maria Lopez, Rodolfo Mugica-Vidal, Beatriz Rojo-Bezares, Carmen Lozano, Ana Gonzalez-Marcos, Paula Toledano, Ignacio Muro-Fraguas, Ana Sainz-Garcia, Yolanda Saenz, Fernando Alba-Elias
Summary: This study utilized atmospheric-pressure plasma polymerization to promote Pseudomonas aeruginosa biofilm production on polystyrene Petri dishes, and discovered a direct relationship between the thickness of the coatings and the biofilm production.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mohammad Mamunur Rashid, Barbara Simoncic, Brigita Tomsic
Summary: TiO2 has been recognized as one of the most attractive nanomaterials for the functionalization of textiles due to its unique properties. Chemical and physical modification of textile fibers with TiO2 nanoparticles and structures offer various functional properties such as self-cleaning, antimicrobial activity, UV protection, hydrophobicity, thermal stability, flame retardancy, and electrical conductivity. New strategies for enhancing visible light photocatalytic activity through TiO2 surface modification are discussed in this review, along with future research perspectives in this area.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Pierre-Alexandre Royoux, Stephanie Ognier, Mengxue Zhang, Christophe M. Thomas, Michael Tatoulian
Summary: The oligomerization of 1-hexene under argon plasma was studied in a gas-liquid, continuous flow microreactor. The results showed that efficient conversion of 1-hexene into oligomers composed of 10 monomer units could be achieved, but light by-products were also formed.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Textiles
Cosmas Fednand, Pendo Bigambo, Quintino Mgani
Summary: This study investigated potential chemical methods to modify sisal fibers for clothing applications, demonstrating improved mechanical properties and moisture content comparable to other cellulosic fibers. The results suggest a possibility of developing sisal fibers for clothing applications.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Polymer Science
Jae Young Kim, Hyojun Jang, Ye Rin Lee, Kangmin Kim, Habeeb Olaitan Suleiman, Choon-Sang Park, Bhum Jae Shin, Eun Young Jung, Heung-Sik Tae
Summary: Polyaniline (PANI) was synthesized from liquid aniline through a newly designed plasma jet array using the atmospheric pressure (AP) plasma process. The effects of nitrogen gas addition on the properties of PANI films were examined. Encapsulation was used to isolate the iodine-doped PANI film from the atmosphere, and the electrical resistance of the PANI film remained constant.
Article
Chemistry, Multidisciplinary
Jacob Manzi, Ariel E. E. Weltner, Tony Varghese, Nicholas McKibben, Mia Busuladzic-Begic, David Estrada, Harish Subbaraman
Summary: This paper demonstrates the use of plasma-jet printing (PJP) to deposit thermoelectric nanoflakes onto flexible substrates at room temperature, with substantial improvements in material adhesion and flexibility observed. The printed films exhibit electrical conductivity of 2.5 x 10(3) S m(-1) and a power factor of 70 mu W m(-1) K-2 at room temperature. This advancement in plasma jet printing promotes not only the development of energy harvesting but also large-scale flexible electronics and sensors for space and commercial applications.
Article
Materials Science, Multidisciplinary
Artem Arkhangelskiy, Alberto Quaranta, Lucio Pancheri, Devid Maniglio
Summary: A novel method for creating conductive biocompatible coatings using cold plasma-assisted processes is reported in this study. The controlled deposition of conductive polymer PEDOT:PSS on substrates with different characteristics is achieved, and the stability and adhesion of the deposited films are studied. The influence of plasma reaction and etching mechanism on the electrical parameters is investigated using electrical resistance measurements. Additionally, the method is successfully applied to deposit stacked layers structures, opening up possibilities for designing basic passive electrical components and advanced biosensor devices with complex shapes.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shun Aoyama, Hiroki Nagasawa, Masakoto Kanezashi, Toshinori Tsuru
Summary: In this study, a novel atmospheric-pressure water vapor plasma modification method was developed to enhance the pervaporation performance of organosilica membranes. The plasma treatment significantly improved the surface hydrophilicity and molecular sieving properties of the membranes, leading to high selectivity and permeance in the dehydration of alcohol solutions.
Review
Chemistry, Multidisciplinary
Rok Zaplotnik, Gregor Primc, Alenka Vesel
Summary: A suitable technique for localized surface treatment of solid materials is an atmospheric pressure plasma jet (APPJ), whose properties are influenced by details like gaseous impurities concentration. The simplest configuration of APPJ using optical emission spectroscopy (OES) is discussed along with results from various studies. Studies show that surface treatment is limited by the area reached by the reactive radicals.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Alice M. Bumstead, Ignas Pakamore, Kieran D. Richards, Michael F. Thorne, Sophia S. Boyadjieva, Celia Castillo-Blas, Lauren N. McHugh, Adam F. Sapnik, Dean S. Keeble, David A. Keen, Rachel C. Evans, Ross S. Forgan, Thomas D. Bennett
Summary: Melt-quenched metal-organic framework (MOF) glasses have been developed, and the surface properties of these glasses can be tuned by post-synthetic modification (PSM).
CHEMISTRY OF MATERIALS
(2022)
Review
Polymer Science
Afonso R. G. de Azevedo, Ariana S. A. Cruz, Markssuel T. Marvila, Leandro B. de Oliveira, Sergio N. Monteiro, Carlos Mauricio F. Vieira, Roman Fediuk, Roman Timokhin, Nikolai Vatin, Marina Daironas
Summary: Geopolymer materials have superior physical properties compared to conventional cement and are environmentally friendly, but they have low flexural strength. By inserting fibers into geopolymeric matrices, their performance can be optimized to overcome this deficiency.
Article
Materials Science, Coatings & Films
Lee Organski, Xingxing Wang, Andrew Myers, Yun-Chu Chen, Kinam Park, Sarena. D. D. Horava, Coralie. A. A. Richard, Yoon Yeo, Alexey Shashurin
Summary: In this study, a DBD plasma apparatus was developed to continuously treat the inner surface of microbore tubing and investigate the effects of plasma power and treatment time on surface roughness and wettability.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Review
Chemistry, Multidisciplinary
Sehan Jayasinghe, Dumindu Pasan Siriwardena, Imalka Munaweera, Chandani Perera, Nilwala Kottegoda
Summary: This review presents the recent developments in utilizing plasma as a surface activation technique for activated carbon, and provides an in-depth analysis of the relationship between experimental parameters and the resulting surface features of activated carbon. The functionalization mechanisms and the aging effect of surface functionalized activated carbon are also discussed. Additionally, the review discusses the recent advances in applications of SFAC, as well as the challenges and future perspectives.
