Article
Materials Science, Multidisciplinary
Wouter Ruelens, Gilles Koolen, Briac Gricourt, Aart Willem van Vuure, Mario Smet
Summary: Furfuryl alcohol resins with varying amounts of comonomer were synthesized to inhibit the conjugation and crosslinking reactions of the resin. The pre-resins were briefly characterized and then cured to investigate their mechanical properties. The addition of 5% DMFA resulted in a remarkable increase in the strength and strain to failure of the cured resin.
Article
Biochemistry & Molecular Biology
Asmaa M. Abu El-Soad, Giuseppe Lazzara, Mahmoud O. Abd El-Magied, Giuseppe Cavallaro, Jamelah S. Al-Otaibi, M. I. Sayyed, Elena G. Kovaleva
Summary: This study tested the adsorption characteristics of carboxyl group modified chitosan (CTS-CAA) towards copper (II) and zinc (II) ions, and characterized the modified chitosan using various techniques. The results showed that CTS-CAA had good adsorption capacity for Cu (II) and Zn (II), and exhibited favorable adsorption kinetics and thermodynamics under variable conditions. Moreover, CTS-CAA could be regenerated using different eluents.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Polymer Science
Fabio Bertini, Adriano Vignali, Marcello Marelli, Nicoletta Ravasio, Federica Zaccheria
Summary: This study focuses on the preparation of styrene-free thermosetting resins using vegetable oils and terpenic comonomers, which not only addresses environmental and safety concerns but also allows for tunable physical properties. The potential applications of these resins in combination with natural fibers have also been explored.
Article
Food Science & Technology
Dan Yang, Mang-Mang Li, Wen-Jun Wang, Guo-Dong Zheng, Zhong-Ping Yin, Ji-Guang Chen, Qing-Feng Zhang
Summary: This study purified anthocyanins from Roselles using macroporous resins adsorption and desorption process. Among the six resins tested, DM28 had the highest adsorption capacity while DM21 had the fastest adsorption rate. The Freundlich model provided a better fit for the static adsorption isotherm. The mass transfer zone of each resin on a fixed bed was analyzed using the mass transfer zone model, with DM21 having the shortest length. The anthocyanins in Roselle extract were successfully adsorbed by DM21 fixed bed and desorbed by 70% ethanol, resulting in a 6-fold increase in anthocyanin content after lyophilization.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Xinyu Wang, Chenyu Zhou, Shengsong Dai, Junjie Wang, Zhiquan Pan, Hong Zhou
Summary: A bio-based flame retardant PDE was synthesized and applied in epoxy resin, with further modification of the resin by adding chitosan. The modified resins showed excellent flame retardancy and transparency, as well as absorption effect towards ultraviolet light.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Haiyang Ding, Lina Xu, Xiaohua Yang, Shouhai Li, Jianling Xia, Mei Li
Summary: A novel castor oil-based and phosphorus-containing epoxy resin (FREP) and a curing agent (AACO) with high flame retardancy and flexibility were successfully synthesized. The introduction of FREP and AACO effectively increased the elongation at break of pure epoxy resins, and reduced the heat release, smoke production, and toxic gas emissions during combustion. FREP and AACO show promising potential for the synthesis of epoxy resins with excellent flame retardancy, smoke suppression, and flexible performance.
Article
Chemistry, Multidisciplinary
Candelaria Tejada-Tovar, Angel Villabona-Ortiz, Rodrigo Ortega-Toro
Summary: This study demonstrated that bio adsorbents prepared from yam starch and plantain waste can effectively remove Cr (VI) and Ni (II) from aqueous solutions, with removal efficiencies above 80%. Temperature was found to have the most significant influence on Cr (VI) removal, while adsorbent dose and temperature were relevant factors for Ni (II) removal.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Zhaohui Du, Changsong Zhou, Dong Chen, Wenrui Li, Hao Wang, Hao Wu, Zhen Zhang, Hongmin Yang
Summary: In this study, iron-based porous resins were synthesized by loading iron element onto hyper crosslinked polymeric resin, and their performance in toluene removal was investigated. The results showed that 2-Fe/LXQ-10 had the highest toluene adsorption capacity and exhibited good toluene removal efficiency. Additionally, the effects of reaction temperature, hydrogen peroxide concentration, initial pH, and iron load on the oxidation efficiency of adsorbed toluene were studied. The proposed degradation pathways of toluene provide valuable insights for reducing toluene emissions and advancing the application of adsorption resins in gaseous toluene control.
Article
Engineering, Environmental
Jue Wang, Xi Yang, Dongdong Yan, Junyan Wu, Yiguo He, Yadong Zhang
Summary: In this study, chloroacetylated polystyrene resins were used as support, polyethyleneimine as functional monomer, epichlorohydrin as cross-linker, and Cu(II) as template to prepare ion-imprinted resins (PS-PEI@SIP) and nonimprinted resins (PS-PEI@NIP). The results showed that PS-PEI@SIP had high adsorption capacity and selectivity for Cu(II) ions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Engineering, Biomedical
Jiajun Luo, Matthew Walker, Yinbo Xiao, Hannah Donnelly, Matthew J. Dalby, Manuel Salmeron-Sanchez
Summary: This review explores the effective physical approach of nanotopography in biomaterial cell manipulation and its interactions with protein adsorption. Advances in creating nanotopographical features to guide cell behaviors and the cellular mechanotransductive pathways initiated by nanotopography are summarized in this review.
BIOACTIVE MATERIALS
(2022)
Article
Engineering, Chemical
R. Matthew Asmussen, Amy Westesen, Elsa A. Cordova, Alessandra Lie Fujii Yamagata, Philip P. Schonewill, Aryiana C. Moore, Agathe Bourchy, Sarah A. Saslow, Gary L. Smith, Brian J. Riley, Rodney S. Skeen
Summary: The study evaluates the ability of various materials to remove aqueous iodine from a mildly alkaline, carbonate-rich nuclear waste stream. Batch testing and flow-through column testing were conducted. Hybrid resins CHM-20, SIR-110-CE, and RTBI showed high efficiency in simultaneously removing iodide and iodate, while Ag-containing materials and SBAR demonstrated high capacity for iodide removal. Purolite A532E performed exceptionally well in overall iodide removal, but would exceed waste classification before breakthrough, while Ionex 400 degraded over time and CHM-20 was limited in single pass through design.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
James M. Anderson, David W. Grainger
Summary: Sung Wan Kim's initial efforts as an independent investigator were focused on improving the understanding of early events in blood/material interactions, leading to the development of blood compatible materials. His studies were supported by NIH grants for over 40 years and contributed to the fields of biomaterials and non-thrombogenic biomaterial research.
JOURNAL OF CONTROLLED RELEASE
(2021)
Review
Environmental Sciences
Fuhar Dixit, Rahul Dutta, Benoit Barbeau, Pierre Berube, Madjid Mohseni
Summary: Per- and poly-fluoroalkyl substances (PFAS) are a large family of anthropogenic organic compounds with a wide range of industrial and commercial applications, and have raised global concerns due to their toxicity and bio-accumulative properties. The ion exchange (IX) process has been found to be an efficient technology for the remediation of PFAS-laden surface, ground and effluent wastewaters.
Article
Polymer Science
Suzanne Morsch, Stuart B. Lyon, Simon Gibbon, Mark Irwin
Summary: The internal nanostructure of epoxy resins has negligible effect on the extent and kinetics of moisture sorption, despite being able to be varied through careful optimization of the cure schedule.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Food Science & Technology
Lijuan Peng, Bo Wu, Min Zhou, Guoyan Yang, Ying Zhang, Hongyan Lu
Summary: Weizmannia coagulans, which has high temperature tolerance and stability, was used to produce exopolysaccharides (EPS) through fermentation at 52 degrees Celsius. A weak basic anion exchange resin was used to create a buffer system that neutralized lactic acid and formed hydrogen bonds with the capsular polysaccharides of the bacteria. This increased the growth space for capsular polysaccharides. The optimized fermentation conditions resulted in an EPS concentration of 19.8 g/L, which was a 20-fold increase compared to conventional fermentation.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kokkarachedu Varaprasad, Dariela Nunez, Murali Mohan Yallapu, Tippabattini Jayaramudu, Elizabeth Elgueta, Patricio Oyarzun
Article
Polymer Science
Juan D. Giraldo, Victor H. Campos-Requena, Bernabe L. Rivas
Article
Polymer Science
Elizabeth Elgueta, Bernabe L. Rivas, Aritz Mancisidor, Dariela Nunez, Mohamed Dahrouch
Article
Materials Science, Multidisciplinary
Felipe Sanhueza, Emky Valdebenito, R. Udayabhaskar, Christopher Salvo, Saeed Farhang Sahlevani, Elizabeth Elgueta, Marco Parra, Helia Bello, R. Mangalaraja
MATERIALS RESEARCH EXPRESS
(2019)
Article
Polymer Science
Juan D. Giraldo, Bernabe L. Rivas
Summary: This study investigated the direct solubilization of solid chitosan in an aqueous acetic acid medium without the addition of salt using an inverse approach based on a mathematical model. The main finding was that diluted systems lacking salt showed a tendency towards an apparent dissociation constant of around 6.44 as polymer concentration increased.
Article
Chemistry, Physical
Lina Uribe, Juan D. Giraldo, Alejandro Vargas
Review
Chemistry, Analytical
Yadiris Garcia, Myleidi Vera, Juan D. Giraldo, Karla Garrido-Miranda, Veronica A. Jimenez, Bruno F. Urbano, Eduardo D. Pereira
ANALYTICAL CHEMISTRY
(2022)
Article
Polymer Science
Consuelo Quiroz, Romina Murga, Juan David Giraldo, Leopoldo Gutierrez, Lina Uribe
Summary: The study found that commercial lignosulfonates (LSs) have a stronger adhesion to molybdenite in seawater, which enables the selective separation of chalcopyrite and molybdenite in froth flotation without using the toxic reagent sodium hydrosulfide (NaHS).
Review
Chemistry, Applied
Juan D. Giraldo, Karla A. Garrido Miranda, Mauricio Schoebitz
Summary: Chitinous materials, derived from renewable sources such as shellfish waste, have the potential to replace synthetic agrochemicals in the development of bioproducts. Recent studies have shown that these biopolymers can effectively control postharvest diseases, enhance nutrient availability for plants, and improve plant resistance against pathogens. However, there is still a gap in knowledge and innovation that needs to be addressed to make chitinous-based bioproducts more competitive in the market. This perspective article also provides insights into the development and commercialization of agricultural bioproducts containing chitin or its derivatives in the Chilean market.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Elizabeth Elgueta, Yerko Becerra, Ana Martinez, Miguel Pereira, Isabel Carrillo-Varela, Felipe Sanhueza, Dariela Nunez, Bernabe L. Rivas
Summary: The adsorption capacity of hydrogels derived from modified xylan hemicellulose has been tested for removing metal ions pollutants from an aqueous solution. The results showed that the hydrogels with 30% and 50% xylan had the highest adsorption capacity for Cd(II), Cu(II), and Pb(II) ions.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Review
Agronomy
Karla A. Garrido-Miranda, Juan D. Giraldo, Mauricio Schoebitz
Summary: Synthetic pesticides used in agriculture have been proven to be highly toxic, leading to environmental contamination and the development of resistance in insects. This has resulted in the banning or restriction of these pesticides in many countries. Essential oils are being explored as a renewable and safe alternative, as they have insecticidal effects against different pests. However, their high volatility and low solubility in water pose challenges.
FRONTIERS IN AGRONOMY
(2022)
Article
Chemistry, Multidisciplinary
Leonidas Encina, Elizabeth Elgueta, Bernabe L. Rivas, Miguel Pereira, Felipe Sanhueza
Summary: The study demonstrated that hydrogels derived from modified GGM hemicellulose are effective in adsorbing Cu(ii), Cd(ii), and Pb(ii) ions, with the H3 hydrogel showing superior adsorption properties compared to others while also exhibiting lesser swelling. This suggests that modified GGM hemicelluloses can serve as renewable adsorbents for removing these heavy metal ions from aqueous solutions.
Article
Chemistry, Multidisciplinary
Dariela Nunez, Jon Ander Serrano, Aritz Mancisidor, Elizabeth Elgueta, Kokkarachedu Varaprasad, Patricio Oyarzun, Rodrigo Caceres, Walther Ide, Bernabe L. Rivas
Article
Chemistry, Multidisciplinary
Juan D. Giraldo, Bernabe L. Rivas
JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
(2017)
