Article
Materials Science, Multidisciplinary
Zhongyao Zhang, Jennifer L. Wilson, Brian R. Kitt, David W. Flaherty
Summary: Reactive plasma discharges, specifically low-pressure O-2 plasma treatments, have been shown to modify the morphology and chemistry of composite surfaces, resulting in increased shear strength of carbon fiber composites by promoting mechanical interlocking and interfacial chemical bonding. These improvements are attributed to the exposure and oxidation of imide groups on the composite surfaces, leading to enhanced adhesion and covalent bond formation with epoxides in adhesives.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Felipe Vicente de Paula Kodaira, Ana Carla de Paula Leite Almeida, Thayna Fernandes Tavares, Antje Quade, Luis Rogerio de Oliveira Hein, Konstantin Georgiev Kostov
Summary: A funnel-like atmospheric pressure plasma jet with a wide exit was proposed to overcome the limitation of small treatment area. Gas-permeable cotton cloth covered the nozzle to improve gas flow dynamics. Surface modifications were observed on both sides of the treated samples with different functional groups.
Review
Pharmacology & Pharmacy
Pankaj Bhatt, Vipin Kumar, Vetriselvan Subramaniyan, Kandasamy Nagarajan, Mahendran Sekar, Suresh Chinni, Gobinath Ramachawolran
Summary: Natural polymers have gained attention in drug delivery due to their biocompatibility and biodegradability. However, their surface properties often limit their use. Plasma treatment can overcome these limitations by improving the properties of natural polymers. This review provides an overview of recent advances in plasma modification of natural polymer-based drug delivery systems.
Article
Chemistry, Physical
Ilknur Demiral, Canan Samdan, Hakan Demiral
Summary: This study synthesized activated carbon from peach stones and fruit juice industrial wastes, enriching the surface functional groups through HNO3 oxidation. Acid modification significantly affected the surface area and pore structures of the activated carbon, leading to collapse of micropores and an increase in mesopores. By utilizing 69% nitric acid modification, the activated carbon showed increased diversity in surface functional groups and total surface acidity.
SURFACES AND INTERFACES
(2021)
Article
Polymer Science
Alina Silvia Chiper, Gabriela Borcia
Summary: This study compares the effects of plasma on polymers exposed to helium and argon gaseous environments in a pulsed dielectric barrier discharge at atmospheric pressure. The results show that plasma treatment can efficiently and remarkably modify the surface properties of polymers, especially cellulose-based materials.
Article
Chemistry, Physical
Zekun Li, Lu Zhang, Lihao Guo, Wenwen Hu, Aifang Yu, Junyi Zhai
Summary: Interface functional groups are crucial in regulating the electrical properties of bulk materials. This study presents a novel strategy to enhance the triboelectric performance by controlling the functional groups between nano-fillers and polymer matrix without altering the dielectric constant. By adding perfluorosilane coupling agents modified silica nanoparticles to polyvinylidene difluoride, the transferred charge density (TCD) of triboelectric nanogenerators (TENGs) can be regulated. The nanocomposite film based TENG with a doping concentration of 2.25 wt.% perfluorodecyl modified SNPs exhibits significantly improved TCD and power density compared to pure PVDF film. The dominance of interface functional groups in TENG performance is demonstrated, and a Fermi level model is proposed to explain the regulation of TCD by nanoparticle concentration. This work provides a new understanding of TENG performance independent of dielectric constant and suggests a promising avenue for enhancing TENG performance through selective functional groups.
Article
Chemistry, Physical
Poonam Sundriyal, Megha Sahu, Om Prakash, Shantanu Bhattacharya
Summary: The combined effect of plasma and PEG Silane treatment can permanently enhance the hydrophilicity and improve the adhesion strength of PEEK surfaces. The functional groups and polar component of surface energy are crucial factors in the long-term modification of PEEK surfaces.
SURFACES AND INTERFACES
(2021)
Review
Polymer Science
Alenka Vesel
Summary: Materials for biomedical applications often need to be coated to enhance their performance, such as their biocompatibility, antibacterial, antioxidant, and anti-inflammatory properties, or to assist the regeneration process and influence cell adhesion. Chitosan, a naturally available substance, meets these criteria. Plasma treatment is an effective solution for altering the surface of synthetic polymer materials to ensure interaction with chitosan. This review focuses on plasma methods for surface modification of polymers to improve chitosan immobilization, including direct and indirect immobilization approaches.
Article
Chemistry, Multidisciplinary
Simon Spiegel, Ilona Wagner, Salma Begum, Matthias Schwotzer, Isabelle Wessely, Stefan Braese, Manuel Tsotsalas
Summary: External surface engineering plays a crucial role in the design of metal-organic framework nanoparticles (MOF NPs) for optimized chemical and colloidal stability. However, current methods for surface modification lack precise control over polymer density and dynamic modifications. This study introduces a versatile approach based on covalent modification using alkoxyamines to modify the outer surface of MOF NPs. The successful surface modification and polymer growth are confirmed using various analytical techniques, and the functionalized MOF NPs demonstrate high suspension stability and good dispersibility while retaining their chemical integrity and crystalline structure. Alkoxyamines prove to be a versatile tool for dynamically modifying the surface of MOF NPs with precision.
Article
Chemistry, Physical
Alenka Vesel, Rok Zaplotnik, Miran Mozeti, Gregor Primc
Summary: The study demonstrates that oxidation treatment with O-atom density in plasma afterglow can achieve self-limiting functionalization of material surfaces. X-ray Photoelectron Spectroscopy was used to investigate the formation of oxygen groups, revealing saturation of OH groups on polystyrene at a dose of 1 × 1019 m- 2. Additionally, measurable levels of C--O groups and degradation of the benzene ring were observed at higher doses.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Physical
Yee Yee Khine, Xinyue Wen, Xiaoheng Jin, Tobias Foller, Rakesh Joshi
Summary: This study provides a comprehensive summary of recently advanced methodologies for designing functionalized graphene oxide (GO) and discusses essential characterization techniques. It aims to offer fundamental insight into the latest developments in covalently modified GO derivatives, leading to their broader utilization in the future.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Green & Sustainable Science & Technology
Xudong Fan, Yujian Wu, Yan Sun, Ren Tu, Zhipeng Ren, Kaili Liang, Enchen Jiang, Yongzhi Ren, Xiwei Xu
Summary: This study investigates the effect of adjusting the surface microenvironment of biomass-derived char on the catalytic activity of Ni-MoOx/bio-char catalyst. The results show that the O-containing functional groups on the bio-char carriers enhance the dispersion of active metals and decrease particle size, thereby boosting the Ni/MoOx-Ov interface. The quantity of Ni/MoOx-Ov interface is found to positively correlate with BTX yield. Additionally, the study examines the impact of hydrothermal parameters, HDO conditions, and metal loadings on the catalytic performance of the catalyst.
Article
Chemistry, Physical
Weronika Gieparda, Marcin Przybylak, Szymon Rojewski, Beata Doczekalska
Summary: The aim of this study is to investigate the effect of modifying flax fibers with silicon compounds and the effect of the mercerization process on their properties. Two types of polysiloxanes were synthesized and confirmed using FTIR and NMR. Tests including SEM, FTIR, TGA, and PCFC were conducted to analyze the fibers. The results showed that the modified fibers had better thermal stability and improved flammability.
Article
Biophysics
Aiyang Zhang, Wei Sun, Xinyi Liang, Xianshuang Chen, Yuepeng Li, Xiaoli Liu, Hong Chen
Summary: The research found that both sugar units and sulfonate/sulfate units in HMPs play an important role in vascular cell selectivity, while carboxylic groups also contribute significantly to HMPs. The surface modified with both PAA and PS1M1 at a 1:1 feed ratio showed enhanced promotion of HUVECs and inhibition of HUVSMCs, indicating stronger vascular cell selectivity when carboxylic groups are present along with sugar and sulfonate units.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Engineering, Biomedical
Rui Zhong, Zeng He, Xuejun Zhang, Dingding Han, Hong Wang, Jiaxin Liu
Summary: The main problem in designing blood-contacting biomaterials lies in the lack of systematic understanding of blood-biomaterial interactions and strategies to modulate blood responses. This study investigated how different functional groups grafted onto a PBT film can affect protein absorption, platelet adhesion, coagulation system, and complement formation, ultimately finding that the blood responses are interconnected and can be modulated by varying functional groups on biomaterial surfaces to enhance hemocompatibility.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2021)
Article
Physics, Applied
Asmus Meyer-Plath, Fabian Beckert, Folke J. Toelle, Heinz Sturm, Rolf Muelhaupt
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2016)
Article
Engineering, Chemical
Eldar Zeynalov, Manfred Wagner, Joerg Friedrich, Matanat Magerramova, Nazilya Salmanova, Gundula Hidde, Asmus Meyer-Plath
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2017)
Article
Environmental Sciences
Christof Asbach, Carla Alexander, Simon Clavaguera, Dirk Dahmann, Helene Dozol, Bertrand Faure, Martin Fierz, Luca Fontana, Ivo Iavicoli, Heinz Kaminski, Laura MacCalman, Asmus Meyer-Plath, Barbara Simonow, Martie van Tongeren, Ana Maria Todea
SCIENCE OF THE TOTAL ENVIRONMENT
(2017)
Article
Environmental Sciences
Ana Maria Todea, Stefanie Beckmann, Heinz Kaminski, Delphine Bard, Sebastien Bau, Simon Clavaguera, Dirk Dahmann, Helene Dozol, Nico Dziurowitz, Karine Elihn, Martin Fierz, Goran Liden, Asmus Meyer-Plath, Christian Monz, Volker Neumann, Johannes Pelzer, Barbara Katrin Simonow, Patrick Thali, Ilse Tuinman, Arjan van der Vleuten, Huub Vroomen, Christof Asbach
SCIENCE OF THE TOTAL ENVIRONMENT
(2017)
Article
Chemistry, Multidisciplinary
Barbara Katrin Simonow, Daniela Wenzlaff, Asmus Meyer-Plath, Nico Dziurowitz, Carmen Thim, Jana Thiel, Mikolaj Jandy, Sabine Plitzko
JOURNAL OF NANOPARTICLE RESEARCH
(2018)
Article
Engineering, Chemical
Dirk Brossell, Elisabeth Heunisch, Asmus Meyer-Plath, Daphne Baeger, Volker Bachmann, Kerstin Kaempf, Nico Dziurowitz, Carmen Thim, Daniela Wenzlaff, John Schumann, Sabine Plitzko
Article
Construction & Building Technology
Emmanuel Belut, Araceli Sanchez Jimenez, Asmus Meyer-Plath, Antti Joonas Koivisto, Ismo K. Koponen, Alexander C. O. Jensen, Laura MacCalman, Ilse Tuinman, Wouter Fransman, Maida Domat, Mariya Bivolarova, Martie van Tongeren
Article
Environmental Sciences
Asmus Meyer-Plath, Daphne Bager, Nico Dziurowitz, Doris Perseke, Barbara Katrin Simonow, Carmen Thim, Daniela Wenzlaff, Sabine Plitzko
Article
Chemistry, Multidisciplinary
Rolf Packroff, Dirk Brossell, Asmus Meyer-Plath, Romy Marx
Summary: Despite the recognition of asbestos hazards over 120 years ago, restrictions on its use came too late. Understanding the toxicological fiber principle has provided insights into potential carcinogens and safe design of new fiber materials. Further research on nanomaterials is crucial for the development of European chemicals regulation to prevent another asbestos disaster.
CHEMIE IN UNSERER ZEIT
(2021)
Article
Materials Science, Multidisciplinary
Renata Fortini, Asmus Meyer-Plath, Dominic Kehren, Ulrich Gernert, Leonardo Agudo Jacome, Heinz Sturm
Article
Environmental Sciences
Dominic Kehren, Barbara Simonow, Daphne Baeger, Nico Dziurowitz, Daniela Wenzlaff, Carmen Thim, Judith Neuhoff, Asmus Meyer-Plath, Sabine Plitzko
AEROSOL AND AIR QUALITY RESEARCH
(2019)
Article
Engineering, Environmental
S. Plitzko, A. Meyer-Plath, N. Dziurowitz, B. Simonow, P. Steinle, M. Mattenklott
GEFAHRSTOFFE REINHALTUNG DER LUFT
(2018)
Article
Engineering, Environmental
S. Plitzko, A. Meyer-Plath, N. Dziurowit, B. Simonow, P. Steinle, M. Mattenklott
GEFAHRSTOFFE REINHALTUNG DER LUFT
(2018)
Article
Environmental Sciences
Alexander C. O. Jensen, Miikka Dal Maso, Antti J. Koivisto, Emmanuel Belut, Asmus Meyer-Plath, Martie Van Tongeren, Araceli Sanchez Jimenez, Ilse Tuinman, Maida Domat, Jorn Toftum, Ismo K. Koponen
Meeting Abstract
Pharmacology & Pharmacy
D. Schwotzer, A. Meyer-Plath, S. Rittinghausen, O. Creutzenberg, A. Leonhardt, D. Schaudien
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
(2018)
