Article
Chemistry, Applied
Qingyu Qin, Jiale Liu, Xinyan Zhang, Wenying Liu, Lujia Han, Swee Leong Sing, Xian Liu
Summary: Capsicum and alfalfa leaves are rich in leaf proteins and cellulose, which are good raw materials for protein-based bionanocomposites films (PBBFs). However, the pigments in the leaf proteins result in PBBFs with low light transmission, limiting their application in food packaging. This study investigates the effects of pigment removal on the physicochemical and material properties of PBBFs. The results show that pigment removal significantly improves the light transmission and chromaticity values of PBBFs, making them suitable for photochemically sensitive food packaging.
FOOD HYDROCOLLOIDS
(2023)
Article
Polymer Science
Ismail Ismail, Quratul Aini, Zulkarnain Jalil, Niyi Gideon Olaiya, Mursal Mursal, C. K. Abdullah, Abdul H. P. S. Khalil
Summary: This study fabricated a high-performance biocomposite by bonding coconut shell with waste plastic, with the optimal performance achieved at a 30/70 ratio of plastic waste to coconut shell. The study revealed that the performance of the biocomposite significantly improved with a lower percentage of matrix and filler nanoparticles, highlighting the potential for industrial applications as a panelboard.
Article
Construction & Building Technology
Mehmet Nuri Kolak, Meral Oltulu
Summary: To reduce environmental pollution, a bio-composite lightweight building material using expanded perlite (EP) and hemp stalks was developed. The study found that increasing the amount of filling in the composite decreased apparent density, compressive strength, ultrasonic pulse velocity, and thermal conductivity, but increased water absorption, swelling in thickness, and weight loss. The addition of EP increased water absorption, ultrasonic pulse velocity, and compressive strength, while decreasing thermal conductivity. The study is important because it utilizes carbon-negative hemp and addresses the need for sustainable thermal insulation materials.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Damla Nur Celik, Gokhan Durmus
Summary: According to the International Energy Agency, Turkey, with its large reserves of perlite, has developed a thermal insulation panel using different particle sizes of expanded perlite in order to reduce energy consumption. The study determined that the particle sizes of 0-1.18 mm and 0-3 mm, along with an alkali activator solution as a binder, resulted in the lowest thermal conductivity and density in the samples.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2022)
Article
Construction & Building Technology
Mehmet Nuri Kolak, Meral Oltulu
Summary: Increasing urbanization has made lightweight construction materials with low thermal conductivity important. One of these materials, bio-composite materials made from agricultural wastes, has gained importance. This study aimed to develop new lightweight bio-composites using camelina stalks. Different mixtures were created using unsaturated polyester resin as the binder, and the physical, mechanical, and thermal properties of the bio-composites were examined. The results showed that as the ratio of camelina stalks increased, thermal conductivity, unit weight, compressive strength, and ultrasonic pulse velocity decreased.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Biomedical
Ana Barra, Jacek K. Wychowaniec, Danielle Winning, Maria Margarida Cruz, Liliana P. Ferreira, Brian J. Rodriguez, Helena Oliveira, Eduardo Ruiz-Hitzky, Claudia Nunes, Dermot F. Brougham, Paula Ferreira
Summary: This study explores the heating effect and potential applications of biocompatible magnetic bionanocomposite films under stimulation conditions. The results demonstrate that these films have efficient heating performance and can be used in various hyperthermia scenarios, including heating cell culture medium, gelatine-based hydrogels, and killing cancer cells.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Ramon Ordonez, Lorena Atares, Amparo Chiralt
Summary: Polylactic acid (PLA) is a sustainable material for food packaging. Incorporating cinnamic acid (CA) into PLA films can enhance antimicrobial properties, but the production technique and CA concentration affect the film's properties.
FOOD AND BIOPRODUCTS PROCESSING
(2022)
Article
Thermodynamics
Ayman Karaki, Malek Mohammad, Eyad Masad, Marwan Khraisheh
Summary: This study investigates the thermal properties of lightweight concrete (LWC) and evaluates the performance of different analytical models in predicting the effective thermal conductivity. Experimental results show that the use of expanded perlite can significantly reduce the thermal conductivity of concrete, with the Woodside & Messmer model performing well.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Civil
Ilhami Demir, Selahattin Guzelkucuk, Ozer Sevim, Osman Simsek
Summary: This study aims to achieve a reduction in thermal conductivity, decrease in dead loads of structures, and increase in the use of perlite. Lightweight geopolymer composites were produced using ground raw perlite as a precursor and expanded perlite as an aggregate. The experiments showed that ground raw perlite can be used as a precursor in geopolymer composites and expanded perlite is suitable for lightweight and porous aggregate for heat insulation applications.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Jesus Alberto Pulido-Arcas, Vicente Flores-Ales, Alexis Perez-Fargallo
Summary: In recent years, there has been increased interest in innovative solutions for coating mortars. Previous research has emphasized the importance of substituting cement with other binders to achieve a balance between structural and thermal properties. However, the impact on economic cost and carbon footprint is not fully understood. This study investigates the role of hydraulic lime and expanded perlite in the structural and thermal properties of mortars, considering economic cost and carbon footprint. The findings suggest that thermal conductivity and density can be significantly reduced compared to standard mortars, while mechanical properties are compromised but still sufficient for rendering purposes. The affordability and lower carbon footprint make these mortars an optimal option for rendering, but more research is needed to improve mechanical resistance.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Weixin Xiao, Ping Wang, Xiaorui Song, Bin Liao, Kaiqi Yan, Jing-Jie Zhang
Summary: A lightweight, large-scale, elastic, and anisotropic chitosan aerogel with excellent thermal management capability was fabricated, showing potential as a new material for thermal superinsulation applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Polymer Science
Nazi Azimi, Asghar Gandomkar, Mehdi Sharif
Summary: In this study, chitosan-graphene oxide-zinc oxide nanocomposites were synthesized using two different methods and their properties were investigated. The results showed that the single step preparation method resulted in a better dispersion of filler in the chitosan and enhanced the mechanical and thermal stability of the nanocomposites.
Article
Biochemistry & Molecular Biology
Andressa de Espindola Sobczyk, Claudia Leites Luchese, Debora Jung Luvizetto Faccin, Isabel Cristina Tessaro
Summary: Biopolymers like chitosan and alginate have been used in biomedical applications, especially in wound dressings as substitutes for synthetic polymers. The study compared the influence of antimicrobial agent incorporation form on the properties of chitosan/alginate-based films, finding that films containing oregano essential oil or ground oregano leaves showed promise for wound dressing applications with good physicochemical properties and antimicrobial activity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Busra Turan, Gulhan Sarigol, Pelin Demircivi
Summary: Zirconium loaded chitosan and zirconium loaded chitosan modified by perlite composites were synthesized for tetracycline adsorption. Langmuir isotherm model was found to be the most suitable model for describing the adsorption process, and the synthesized composites showed high adsorption capacity for tetracycline.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Construction & Building Technology
Veysel Akyuncu, Firat Sanliturk
Summary: The study investigates the impact of replacing part of the sand in mortar with coated and uncoated EP on its properties. The results show that increasing EP content decreases the unit weight of the mortar samples, but also affects their physical and mechanical properties, while the polymer coating of EP improves its performance.
JOURNAL OF BUILDING ENGINEERING
(2021)
