Article
Chemistry, Applied
Chunping Qi, Kim Dam-Johansen, Claus Erik Weinell, Huichao Bi, Hao Wu
Summary: The study showed that the partial replacement of spherical zinc particles with stainless steel flakes (SSF) improved the corrosion protection performance of zinc-rich epoxy (ZRE) coating. This enhancement was attributed to the synergistic effects of increasing coating impedance and extending cathodic protection duration.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Veronica Veloso, Fernando Cotting, Diego Silva, Adelina Santos
Summary: This study evaluated the performance of epoxy coatings containing polyaniline, graphene, and modified graphene in corrosion protection of carbon steel. The results showed that the modified graphene coating provided excellent corrosion protection with minimal damage to its structure.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Eugene B. Caldona, David O. Wipf, Dennis W. Smith Jr
Summary: Epoxy resins are widely used thermosetting materials due to their excellent mechanical, thermal, and dielectric performance. A tetra-functional epoxy-amine resin was used as a coating for mild steel, showing high impedance modulus and corrosion resistance in a 3.5 wt% NaCl solution. This resin has potential as a high performance and corrosion resistant coating for semiconductor, aerospace, and marine applications.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Multidisciplinary
Fandi Meng, Li Liu, Yu Cui, Fuhui Wang
Summary: Different physical models for fitting EIS data were developed for epoxy coatings with and without pigments, in order to realize a rapid evaluation of coating degradation under AHP. The resistivity profile was calculated as a critical parameter to describe the anti-permeability of coatings at different immersion times. The interpretation of water diffusion dynamics based on different coating structures was also given, which influenced the choice of distribution models.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Joseph Raj Xavier
Summary: The study successfully developed superior nanocomposite coatings by incorporating PF-functionalized V(2)O(5) nanoparticles into epoxy coatings, showing excellent corrosion protection performance. By using electrochemical techniques, the dissolution of metal/alloy was successfully hindered, forming a passive protective layer. The research demonstrates the potential application value of this novel nanocomposite coating in the field of corrosion protection.
Article
Chemistry, Physical
M. Golabadi, M. Aliofkhazraei, M. Toorani
Summary: This study investigated the protective performance of zirconium-pretreated epoxy films with and without zinc sulfate additive in 3.5 wt% NaCl solution. A new parameter based on EIS tests for the scratched samples was introduced to determine the amount of corrosive electrolyte diffusing into the coating/substrate interface, attributed to cathodic disbondment resistance. It was revealed that coating segregation was reduced via surface pretreating by zirconium with additives.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Applied
Zoi Lamprakou, Huichao Bi, Claus Erik Weinell, Kim Dam-Johansen
Summary: Calcium tannate was synthesized and dispersed into an epoxy coating, which showed higher corrosion resistance compared to reference coatings. XPS analysis confirmed the incorporation of tannate molecules in the protective film formed on the steel substrate under the calcium tannate pigmented coating.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Electrochemistry
Ismail Kada, Dao Trinh, Stephanie Mallarino, Sebastien Touzain
Summary: In a previous work, it was found that physical ageing of organic coatings affects the water uptake process and reduces water uptake values when saturated. This study investigates the impact of physical ageing on water uptake and adhesion of epoxy coatings on aluminium. Epoxy coatings were applied and cured on aluminium panels, with different levels of physical ageing created by controlling the cooling process. The effects on water uptake and adhesion were then analyzed.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Applied
Jeferson L. Oliveira, Anders W. B. Skilbred, Andreas Loken, Ruan R. Henriques, Bluma G. Soares
Summary: The study combined EIS technique with DMA properties and pull-out strength to monitor the anticorrosive properties of high solid epoxy coatings. Results showed that the epoxy coating systems maintained good barrier properties even after ageing treatment, with some indications of enhancement.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Mayara Carla Uvida, Adriana de Araujo Almeida, Sandra Helena Pulcinelli, Celso Valentim Santilli, Peter Hammer
Summary: This study evaluated the influence of the proportion of poly (bisphenol-A-co-epichlorhydrin) resin (DGEBA) to the curing agent diethylenetriamine (DETA) on the properties of epoxy-silica nanocomposites. The results showed that coatings with a DETA to DGEBA ratio of 0.4 exhibited the best long-term corrosion protection, attributed to the presence of larger silica nanodomains as fillers in the cross-linked epoxy matrix, which enhanced the diffusion barrier.
Article
Polymer Science
Muhammad Kamran, Anwar ul Haq Ali Shah, Gul Rahman, Salma Bilal, Philipp Roese
Summary: In this study, environmentally friendly PDG-g-PANI/Al2O3 composites were prepared and used as corrosion inhibitors for mild steel and stainless steel. The results showed that the composite had high inhibition efficiency on both metals in NaCl solution, especially when used in combination with epoxy resin.
Article
Chemistry, Multidisciplinary
Chunping Qi, Claus Erik Weinell, Kim Dam-Johansen, Hao Wu
Summary: The effect of adding 0.5 wt % zinc fibers on the anticorrosion performance of zinc-rich epoxy (ZRE) coatings with different zinc dust contents was investigated. The results showed that ZRE coatings with 85 wt % zinc dust exhibited superior cathodic protection, while coatings with 65 wt % zinc dust showed no cathodic or barrier protection. The addition of zinc fibers did not significantly improve the corrosion resistance of both coatings. However, the ZRE coating with 75 wt % zinc dust showed improved anticorrosion performance with the addition of zinc fibers, providing short-term cathodic protection followed by barrier protection.
Article
Engineering, Civil
Anna Wozniak, Marcin Staszuk, Lukasz Reimann, Oktawian Bialas, Zbigniew Brytan, Sergii Voinarovych, Oleksandr Kyslytsia, Sergii Kaliuzhnyi, Marcin Basiaga, Marcin Admiak
Summary: In this study, the morphology of APS coatings on medical 316L stainless steel was analyzed, with a focus on the influence on physical and electrochemical properties for implant applications. The incorporation of Ti and Zr interlayers improved coating properties, while HAp-containing coatings showed a positive impact on osteogenic cell differentiation and bone adhesion. Among the materials studied, composite coatings with Zr or Zr/HAp exhibited favorable physicochemical properties and the highest corrosion resistance in Ringer solution.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Naoual El-Aouni, Rachid Hsissou, Zaki Safi, Said Abbout, Fouad Benhiba, Jalila El Azzaoui, Rajesh Haldhar, Nuha Wazzan, Lei Guo, Hamid Erramli, Ahmed Elharfi, Abderrahim El Bachiri, Mohamed Rafik
Summary: The study investigates the application of two new epoxy resins as corrosion inhibitors for carbon steel in a hydrochloric acid medium. Various techniques were utilized to quantify the corrosion resistance and results showed that one of the resins had a higher efficiency compared to the other. Computational methods and molecular dynamics simulations revealed the inhibitory effect of the resins on the metal surface.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
Ziyou Li, Giulia Ravenni, Huichao Bi, Claus Erik Weinell, Burak Ulusoy, Yanqiang Zhang, Kim Dam-Johansen
Summary: The study demonstrated that biochar nanoparticles can be utilized to enhance the anticorrosive performance of zinc-rich epoxy coatings, with the example of spruce wood BCN showing even better effectiveness compared to commercial carbon black.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Environmental Sciences
Marcelo Gryczak, Janine W. Y. Wong, Christina Thiemann, Benoit J. D. Ferrari, Inge Werner, Cesar Liberato Petzhold
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Polymer Science
Raphael Henrique Marques Marcilli, Cesar Liberato Petzhold, Maria Isabel Felisberti
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2020)
Article
Polymer Science
Tales da Silva Daitx, Vanessa Silva de Lima, Marcelo Gryczak, Cesar Liberato Petzhold, Larissa Nardini Carli, Raquel Santos Mauler
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Chemistry, Applied
Eduardo Fischer Kerche, Rafael de Avila Delucis, Cesar Liberato Petzhold, Sandro Campos Amico
Summary: Rigid polyurethane biofoams (RPUF) were produced using a bio-based polyol and 10% pinewood particles by single shot-method, with two different confinement degrees studied. Foam cell structure and performance varied under different confinement levels, with 50% confinement resulting in higher strength and lower thermal conductivity.
JOURNAL OF CELLULAR PLASTICS
(2021)
Article
Chemistry, Applied
Joao Antonio Pessoa da Silva, Victoria Castro Bonmann, Douglas Takeshi Kuamoto, Amanda Lopes Ferreira, Cesar Liberato Petzhold, Nilo Sergio Medeiros Cardozo
Summary: Buriti oil was subjected to alkaline and enzymatic glycerolysis to obtain non-ionic emulsifiers, with the enzymatic reaction showing higher conversion and selectivity to monoacylglycerols. Carotenoids were better preserved in the enzymatic product, making it a potential raw material for cosmetics and food industries.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Elano Nery Ferreira, Tathilene Bezerra Mota Gomes Arruda, Francisco Eduardo Arruda Rodrigues, Denise Ramos Moreira, Pedro Oribio Bastos Chaves, Weslley da Silva Rocha, Larissa Morais Ribeiro da Silva, Cesar Liberato Petzhold, Nagila Maria Pontes Silva Ricardo
Summary: This study reports the synthesis and characterization of bio-based lubricants using pequi oil as a raw material. The results show that the lubricants have good thermal stability, melting points, and viscosity. The kinetic study and toxicity analysis further confirm the potential advantages of these lubricants.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Pharmacology & Pharmacy
Lais Maltha Schmidt, Juliana dos Santos, Thayse Viana de Oliveira, Nadine Lysyk Funk, Cesar Liberato Petzhold, Edilson Valmir Benvenutti, Monique Deon, Ruy Carlos Ruver Beck
Summary: This study explored the combination of 3D printing and nanomaterials for drug delivery in the field of pharmaceutics. Mesoporous silica (SBA-15) was used as a drug carrier for hydrophobic drug triamcinolone acetonide, which was incorporated into a hydrophilic printable ink and 3D printed as a hydrophilic polymeric film. The results showed promising application of this novel drug delivery system in oral mucosa treatments.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Energy & Fuels
Rubens Bisatto, Vanessa Martins Picoli, Cesar Liberato Petzhold
Summary: The current challenges in oil production involve increasing productivity under high temperature, pressure, and salinity conditions. In this study, homopolymers were synthesized and evaluated for their efficiency in scale inhibition. It was found that NaSS homopolymers showed the highest efficiency, suggesting that they can act in different stages of scale inhibition.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Applied
Denise Ramos Moreira, Elano Nery Ferreira, Joao Francisco Camara Neto, Lucas Lima Bezerra, Norberto de Kassio Vieira Monteiro, Camila Peixoto Valle, Tathilene Bezerra Mota Gomes Arruda, Pedro Lima Neto, Jailson Silva Rodrigues, Francisco Eduardo Arruda Rodrigues, Cesar Liberato Petzhold, Martin E. Maier, Nagila Maria Pontes Silva Ricardo
Summary: This study describes a sustainable method to produce lubricants from fish waste oil, utilizing tilapia oil as raw material. The synthesized esters showed high viscosity indexes and viscosities that fit different application levels, while being non-toxic to Artemia salina. Computational methods were also used to predict the physical characteristics of the lubricants.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2022)
Article
Pharmacology & Pharmacy
Thayse Viana de Oliveira, Rafaela Santos de Oliveira, Juliana dos Santos, Nadine Lysyk Funk, Cesar Liberato Petzhold, Ruy Carlos Ruver Beck
Summary: Semisolid extrusion is a 3D printing technique that can produce objects from gels or pastes without the need for a light source. In this study, the suitability of semisolid extrusion for producing 3D printed oral solid forms containing drug-loaded polymeric nanocapsules was evaluated. The results showed successful printing of homogeneous solid forms with a specific weight and polyphenol content, and the nanocarriers were recovered.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Chemistry, Applied
Laura de Andrade Souza, Denise Ramos Moreira, Nagila Maria Pontes Silva Ricardo, Martin Edmund Maier, Paulo Roberto Campos Flexa Ribeiro Filho, Francisco Murilo Tavares Luna, Cesar Liberato Petzhold
Summary: Vegetable oils, such as castor oil, are potential alternatives to fossil lubricants due to their abundance, low cost, excellent performance, and eco-friendliness. However, castor oil has poor thermal-oxidative stability and high pour point. This study aimed to improve the properties of castor oil by introducing aromatic amines through transesterification and ring opening reactions. The presence of aromatic amines increased viscosity but decreased viscosity index, while also enhancing thermal and oxidative stability.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Sameque N. Oliveira, Antonia F. J. Uchoa, Denise R. Moreira, Cesar L. Petzhold, Clemens K. Weiss, Katharina Landfester, Nagila M. P. S. Ricardo
Summary: In this study, cross-linked anacardic acid nanocapsules were successfully prepared using the inverse miniemulsion technique. The nanocapsules have ester linkages that can be cleaved by lipase, allowing the release of anacardic acid. The results demonstrate that these nanocapsules have excellent drug delivery properties and exhibit antibacterial activity.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Joao Henrique Lingner Moura, Leticia G. Trindade, Emilse M. A. Martini, Cesar L. Petzhold
Summary: This paper describes the preparation, characterization, and evaluation of properties of proton exchange membranes (PEMs) for non-fluorinated hydrocarbon fuel cells (FCs). A new class of membranes was synthesized using low-cost monomers by radical copolymerization. The membranes were characterized using various techniques and the results showed that higher conductive groups, hydration, and less crosslinks led to better conductivities. The membranes with the best results were also evaluated in oxidative degradation tests. Overall, the study provided valuable insights into adjusting the properties of PEMs for FC applications.
SOLID STATE IONICS
(2023)
Article
Engineering, Chemical
Carlos Enrique Cuevas-Suarez, Adriana Fernandes Da Silva, Alexsandro Dallegrave, Cesar Liberato Petzhold, Claudio Martin Pereira De Pereira, Wellington Luiz Oliveira Da Rosa, J. Eliezer Zamarripa-Calderon, Evandro Piva
Summary: This study examined the effect of unreacted substances of four universal adhesives on cell viability, taking into account different sample preparation protocols. It was found that disc-shaped specimens made with the adhesive material itself led to an overestimation of cell viability outcomes for the universal adhesives. CQ was identified as the most cytotoxic component among the analyzed substances.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Polymer Science
Laura de Andrade Souza, Edson Luiz Francisquetti, Rafael Domingos Dalagnol, Celso Roman Junior, Maria Telma Gomes Schanz, Martin Edmund Maier, Cesar Liberato Petzhold
Summary: A new oleic acid derivative plasticizer, EPO, showed good compatibility with PVC resin, improving thermal stability and elongation at break. A slight increase in glass transition temperature and hardness was observed with higher content of EPO in the plasticizer blend.
POLIMEROS-CIENCIA E TECNOLOGIA
(2021)
Article
Chemistry, Applied
Heena, Komal Sharma, Kamlesh Kumar, Bhargab Das, Raj Kumar
Summary: In this study, holographic films were prepared using an automatic film applicator, and their performance was compared with films prepared by other methods. The results showed that holographic films prepared with the automatic film applicator had higher diffraction efficiency and more uniform thickness, making them suitable for holographic applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Athira S. Vijayan, Antony Joseph, Abey Joseph, T. S. Abhijith, Baiju G. Nair, V. Sajith
Summary: Novel polydopamine functionalized ceria-zirconia nanoparticles filled water-borne epoxy nanocomposite coatings were developed to prevent microbial-induced corrosion of mild steel. The coatings exhibited exceptional anti-biofouling and anti-biocorrosion properties due to the synergistic effect of PDA functionalization and zirconium incorporation, providing significant enhancement in charge transfer resistance and coating resistance.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yudan Yi, Qingyong Sun, Qijun Li, Bi Shi, Ya-nan Wang
Summary: Producing metal-free leather is an effective approach to eliminate Cr pollution and achieve sustainable development of the leather industry. However, current metal-free tanning technologies have limitations in terms of water sorption and charge properties. By using cationic amphiphilic acrylic copolymers (PSD) as retanning agents, the properties of metal-free leather can be significantly improved, including enhanced hydrophobicity, better dye absorption, and excellent filling effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yunqing Xia, Lifen Tong, Xiaofang Feng, Hubing Xiang, Yi He, Xiaobo Liu
Summary: By incorporating functionalized nanofillers, such as polydopamine-modified graphitic carbon nitride and cerium oxide, into epoxy coatings, their corrosion resistance can be improved and their protective period can be extended.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Weineng Lu, Guanhao Ma, Jinqing Qu
Summary: Four novel bis-chalcone-based carbazole derivative photoinitiators were designed and synthesized in this study. Their maximum absorption wavelengths were determined and found to exhibit high molar extinction coefficients. Furthermore, a three-component photoinitiation system including bis-chalcone/iodonium/amine was successfully used to trigger the rapid and efficient photopolymerization of acrylates. The photoinitiators also showed good photo bleaching and biocompatibility, making them suitable for applications such as 3D printing and deep coating curing.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Xingnan Zhou, Shixian Zhang, Yiheng Song, Hongmei Qin, Chuanxi Xiong, Shan Wang, Quanling Yang, Delong Xie, Rong Fan, Dan Chen
Summary: In this study, eco-friendly 3-amino-1,2,4-triazole (ATA) molecules were used to modify graphene oxide (GO) nanosheets for improving the anti-corrosion performance of water-borne epoxy (WEP) coating. The results show that ATA modification enhances the dispersion of GO in the polymer coating and significantly improves the barrier effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Hao Fu, Wei Bing, Xushibojie Liu
Summary: In this study, temperature-sensitive coatings with bacteria-killing and bacteria-releasing functions were prepared on silicone rubber surfaces by UV polymerization and UV photocatalysis. The modified surface exhibited strong and persistent bactericidal effect, inhibiting the formation of bacterial biofilm. Moreover, the smart surface can effectively release bacteria and resist bacterial adhesion through temperature changes. The modified silicone rubber surface showed good biocompatibility without cytotoxicity.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Lee Eyann, Zulkifli Mohamad Ariff, Mohamad Danial Shafiq, Raa Khimi Shuib, Muhamad Sharan Musa
Summary: By investigating the effect of MAA addition on the properties of the WEA core-shell emulsion, film and coating, it was found that MAA can significantly impact the structure and performance of the coatings, and has great potential for applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Jinkyu Choi, Kyung Hoon Min, Byeong Seok Kim, Sung-Hyeon Baeck, Sang Eun Shim, Yingjie Qian
Summary: A novel phosphorus-based flame retardant was designed by incorporating aryl groups, which effectively improved the flame retardancy and mechanical properties of polyurethanes.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Saowaluk Taechutrakul, Thananchai Piroonpan, Beata Paulina Rurarz, Slawomir Kadlubowski, Piotr Ulanski, Wanvimol Pasanphan
Summary: This study proposes the use of nanogels to disperse and stabilize water-insoluble organic pigment particles in water-based inks. The nanogels were prepared using electron beam-induced chemical reactions and showed good dispersion and stabilization properties. The use of nanogels in ink formulation improved the ink's hiding power, lightfastness, and resistance properties.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Shan Wan, Huikai Chen, Bokai Liao, Xingpeng Guo
Summary: In this study, 2-amino-5 mercapto-1,3,4-thiadiazole (ATT) was used as an intercalating agent to prepare ATT/BNNS nanofillers via a liquid-phase assisted ultrasound method. TEM results showed that ATT successfully exfoliated BNNS and reduced agglomeration. The WEP ATT/BNNS coating exhibited the best protective performance under saline immersion due to the combined action of ATT inhibitor and BNNS physical barrier.
PROGRESS IN ORGANIC COATINGS
(2024)
Review
Chemistry, Applied
Lijie Yin, Bo Zhang, Ming Tian, Nanying Ning, Wencai Wang
Summary: This paper reviews the recent progress in the synthesis of bio-based waterborne polyurethanes (BWPU) and focuses on its applications in coatings, adhesives, and antimicrobials. BWPU has attracted much attention due to its good physical and chemical properties, no VOCs emissions, exploitation of renewable substances, and structural design-ability.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yuyang Zhou, Yang Chen, Xinming Cao, Haodong Fu, Yun Li, Yonghui Zhang, Jun Ma, Xin Liu
Summary: This study proposes a strategy to fabricate a high-strength double-layer superhydrophobic actuator, which consists of a metal/glass-based superhydrophobic substrate and a polymer superhydrophobic coating. The coating has high adhesive strength, self-cleaning, anti-ultraviolet irradiation, and anti-stripping properties, along with photothermal and magnetic response capabilities, enabling its application in various fields.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Fengbiao Chen, Fei Gao, Xinru Guo, Yu Chen, Xuelang Gao, Liang Shen
Summary: In this study, various covalent adaptable networks (CANs) were synthesized using multifunctional amines and compared with CANs prepared from primary and secondary amines. The results showed that the performance of CANs is closely related to the crosslinking density, and increasing the content of secondary amines improves the performance but weakens the dynamics.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Qian Zhang, Mengyi Shen, Xingcai Liu, Hao Fu, Wenbo Yang, Jinyuan Zhao, Jian Wang, Yaping Du, Chunjie Ma
Summary: Rare earth-containing corrosion inhibitors were successfully synthesized and added into epoxy coatings for the anti-corrosion of steel materials. The results showed that the coatings with rare earth elements had better anti-corrosion performance, and this difference in performance could be explained by the inherent properties of rare earth elements.
PROGRESS IN ORGANIC COATINGS
(2024)
