Article
Construction & Building Technology
Ercan Aydogmus, Mustafa Dag, Zehra Gulten Yalcin, Hasan Arslanoglu
Summary: In this research, a modified castor oil-based epoxy is synthesized and waste expanded polystyrene (EPS) is used as a filler in the improved biocomposite. The properties of the biocomposite are evaluated using response surface methodology and artificial neural networks. Chemical characterization and physical analysis of the biocomposite are performed. The results show that the use of modified castor oil increases the activation energy and reduces the petrochemical content in the biocomposite. The incorporation of waste EPS reduces production cost and density, while increasing thermal insulation and workability. A new model equation is developed to study the thermal decomposition behavior.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Physics, Fluids & Plasmas
Geert Kapteijns, Eran Bouchbinder, Edan Lerner
Summary: Studying the basic scaling relationship between two dimensionless quantifiers reveals the unity of mechanical disorder in solids, with implications for understanding the low-frequency vibrational spectra of disordered solids, especially glassy systems.
Article
Polymer Science
A. A. Mahmoud, E. A. Nasr, Sonia Zulfiqar, Muhammad Ilyas Sarwar, A. A. Maamoun
Summary: The study investigated the production and properties of polyurethane foam composites using raw materials such as castor oil, and explored the substitution of petroleum-based polyol with plant-based polyol in semi-rigid polyurethane foam production. The results revealed promising applications for castor oil-based polyurethane composites with up to 50% replacement of petroleum-based polyol, particularly in harsh climates.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Uros Hribar, Matjaz Spreitzer, Jakob Koenig
Summary: This study aims to transfer the foaming process of carbon-containing mixtures from an inert to an air atmosphere by adding water glass, which effectively protects the carbon from premature oxidation. The obtained foamed glass samples show relatively low density and open porosity, resulting in low thermal conductivity.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Ceramics
Dmitry Chebykin, Ivan Saenko, Hans-Peter Heller, Rie Endo, Olena Volkova
Summary: This study aims to investigate the effect of glass transition on the thermal conductivity of the CaOB2O3 system. It was found that the addition of CaO increases the thermal conductivity, and the slope of temperature dependence changes above the glass transition temperature.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Polymer Science
Sasan Moradi, Frida Roman, Yolanda Calventus, John M. Hutchinson
Summary: Cooling amorphous polymers under pressure and then releasing the pressure can increase the density of glass materials and enhance thermal conductivity significantly. Applying this process to an epoxy composite filled with BN particles can improve performance, with the densification process having a reversible effect on thermal conductivity.
Article
Thermodynamics
M. Davraz, M. Koru, A. E. Akdag, S. Kilincarslan, Y. E. Delikanli, M. Cabuk
Summary: The study investigated the production potential of foam glass with a low apparent density using waste glass powder and foaming agents. By testing different types of waste glass and additives, the optimal production parameters for ultra-light foam glass were determined, resulting in foam glass samples with desired properties.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Ceramics
Jakob Konig, Rasmus R. Petersen, Niels Iversen, Yuanzheng Yue
Summary: This study investigates the use of foaming agents to foam cathode-ray-tube panel glass and explores the impact of carbon type, MnxOy, and furnace atmosphere on foaming effect and physical properties of foams. The results show that the best foaming effect is achieved with MnO2 in an oxidizing atmosphere, while oxidation of carbon is facilitated by Mn3O4 in an oxygen-free atmosphere, leading to the formation of CO and open porosity. The study demonstrates the potential for improving thermal insulation by decreasing density in closed-porous samples produced with carbon black and Mn3O4.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Engineering, Environmental
Nattapon Uthaipan, Thansiri Kongprabat, Anutida Suwan, Thawanrat Chaisit, Anuwat Saetung, Nitinart Saetung
Summary: The researchers developed a new insulation material based on carbon black and bio-rigid polyurethane foam using recycled palm oil. The foam containing TCB showed faster reaction rate, increased cure rate, and better thermal insulation properties compared to the foam containing CB.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Construction & Building Technology
Dilan Polat, Mustafa Guden
Summary: Geopolymer foams were prepared using fine and coarse waste glass powders with an activation solution of NaOH and Na2SiO3. The effects of different factors on the expansion and temperature behavior of the slurries were investigated, as well as the compression strengths and thermal conductivities of the resulting foams. Increasing foam density led to higher compressive strength and thermal conductivity, with sintering at too high temperatures resulting in reduced foam density.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Iga Jasinska, Ryszard Dachowski, Monika Jaworska-Wedzinska
Summary: This study investigated the impact of using granulated foam glass on construction materials, finding that adding GFG to sand-lime products can significantly reduce the thermal conductivity.
Article
Thermodynamics
Ravi P. Tripathi, M. A. Alvi, Shamshad A. Khan
Summary: The research focused on investigating the thermal, optical, and electrical properties of Se85In15-xBix alloys in bulk and thin film forms. Various parameters such as melting temperature, crystallization temperature, glass transition temperature, and different stability parameters were evaluated. The study also considered the impact of Bi content on alloy properties through different testing methods, providing valuable insights for applications and further research.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Engineering, Environmental
Debora Sorolla-Rosario, Julio Llorca-Porcel, Monica Perez-Martinez, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: The potential of thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) for identifying and quantifying microplastics has been studied, but distinguishing between LDPE and PS poses a challenge due to overlapping melting and glass transition temperatures.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Mei Qun Seah, Zhi Chien Ng, Woei Jye Lau, Mehmet Gursoy, Mustafa Karaman, Tuck-Whye Wong, Ahmad Fauzi Ismail
Summary: This study introduced a solvent-free and rapid surface functionalization approach based on chemical vapor deposition (CVD) to improve the absorption capacity and reusability of polyurethane (PU) foams. Among the monomers tested, hexamethyldisiloxane (HMDSO) and 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA) showed promising results in enhancing the foam's surface hydrophobicity and absorption performance. The modified foams exhibited higher absorption capacity for cyclohexane and crude oil, with improved reusability through ethanol rinsing after each absorption cycle.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Carla Rodrigues, Jakob Konig, Fausto Freire
Summary: This article presents a prospective life cycle assessment of a novel building system incorporating improved foam glass with high recycled content. It shows that the improved foam glass outperforms commercial foam glass in most environmental impact categories. The use of the improved foam glass can significantly reduce climate change impacts and fossil resource use in the European foam glass market.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2023)