Article
Materials Science, Composites
Athar Ali Khan Gorar, Ting Wang, Mohamadou Al Hassan, Abdul Qadeer Dayo, Wen-bin Liu, Jun Wang
Summary: In this study, hazelnut shell particles were added to a bisphenol-A aniline-based benzoxazine matrix and their effects on the matrix properties were investigated. The results showed that the addition of hazelnut shell particles led to a decrease in glass transition temperature, an increase in char yield, and a significant improvement in tensile and impact strength of the composites. Finite element analysis also demonstrated better stress analysis results for the hazelnut shell filled composites.
POLYMER COMPOSITES
(2022)
Article
Food Science & Technology
Sumeyye Sahin, Amine Beyza Ozata
Summary: This study evaluated the potential of hazelnut skin powder as a substitute for cocoa powder in the production of cocoa hazelnut spreads. The results showed that the use of hazelnut skin powder enhanced the textural and sensory properties of the spreads and increased the total phenolic content.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2022)
Article
Materials Science, Characterization & Testing
Pierre Delliere, Pierre Antonczak, Nathanael Guigo
Summary: Polyfurfuryl alcohol (PFA) is a biobased thermoset with controllable properties through reaction with various diamines. Rigid amines increase the glass transition temperature (T-g) of the material, while flexible polyetheramines combined with PFA form a flexible elastomeric network with high thermal stability. A rigid crust is formed at higher temperatures for samples with higher PFA content, significantly impacting the mechanical properties and thermal stability.
Article
Food Science & Technology
Ayse Gulden Goksu, Bilal Cakir, Ibrahim Gulseren
Summary: Cold press hazelnut cakes can be used as a concentrated source of proteins that have bioactive properties. Utilizing bioactive hazelnut protein hydrolysates in industrial hazelnut cocoa cream and investigating their stability through processing and simulated gastrointestinal digestion showed that the inclusion of bioactive peptide fractions was safe and improved the bioactive attributes of the products.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Polymer Science
Vincenzo Titone, Maria Chiara Mistretta, Luigi Botta, Francesco Paolo La Mantia
Summary: This study investigates the effects of adding very small amounts of fumed silica on the morphology, rheological and mechanical behavior of polypropylene nanocomposites, as well as their photo-oxidation behavior. The presence of silica nanoparticles reduces the viscosity of the matrix, improves mechanical properties, particularly the elastic modulus and tensile strength, and enhances the photostability of the polypropylene matrix. The difference in properties between the nanocomposites with different silica content is relatively small, suggesting a nonlinear relationship between the amount of silica and the measured properties.
Article
Materials Science, Textiles
Yahya Hisma Celik, Rojin Yalcin, Tolga Topkaya, Eyup Basaran, Erol Kilickap
Summary: In this study, hazelnut, pistachio, and apricot kernel shells were analyzed for their chemical and structural properties, and their impact on the physical, thermal, and mechanical properties of polyester matrix composites was studied. The addition of powder particles at low rates was found to have a positive effect on bending and compressive strength of the matrix material.
JOURNAL OF NATURAL FIBERS
(2021)
Article
Polymer Science
Cheng Zhou, Juan Wang, Jianxi Li, Jie Shi
Summary: An efficient preparation method for flame retardant silicon rubbers (FRSR) using melamine cyanurate (MCA) was established. The study analyzed the thermal aging mechanisms and flame retardancy of FRSR, finding that aging decreases tensile strength, increases cross-linking density, and embeds MCA in the samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Anjani K. Maurya, Sumit Mandal, Dean E. Wheeldon, Jean Schoeller, Michel Schmid, Simon Annaheim, Martin Camenzind, Giuseppino Fortunato, Alex Dommann, Antonia Neels, Amin Sadeghpour, Rene M. Rossi
Summary: This study provides a molecular interpretation of the relationship between structural changes in fibers and mechanical properties of fabrics under different heat exposures. Changes in crystallinity and lamellar spacing of fabrics were observed, impacting mechanical properties. Thermal decomposition occurs at temperatures above the degradation point, potentially posing a danger to users.
Article
Chemistry, Physical
Ahmed Abouelsaad, Greg White
Summary: The reliable and representative ageing of asphalt samples in the laboratory is crucial for research on asphalt durability, waste material recycling, and rejuvenation treatments. This study emphasizes the significance of ultraviolet radiation in laboratory asphalt aging and highlights the need for more realistic aging protocols. The results show that both thermal oxidation and photo-oxidation should be included for accelerated laboratory asphalt ageing, and rheological testing is a preferred indicator of asphalt binder aging.
Article
Optics
Benjamin R. Anderson, Natalie Gese, Hergen Eilers
Summary: In this study, we propose the use of the lanthanide complex Eu:Y(acac)(3)(DPEPO) as an inert analogue for explosive molecular crystals in subsurface spectroscopy. We characterized the material and spectroscopic properties of this complex and investigated the effects of thermal and photo-degradation on its spectroscopic properties. These measurements will serve as baseline results for future studies on reactions involving this complex embedded within heterogeneous materials.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Multidisciplinary
Lourdes Hurtado, Osmin Aviles, Sharon Brewer, Kingsley K. Donkor, Rubi Romero, Rosa Maria Gomez-Espinosa, Oscar Alvarado, Reyna Natividad
Summary: This study investigated the catalytic activity of Al/Cu interlayered pillared clays for the degradation and mineralization of paracetamol. The results showed that the Al/Cu pillared clays could completely remove paracetamol without the need for acidic conditions or high catalyst concentrations, and exhibited a high mineralization rate. The study also proposed a reaction pathway for the oxidation of paracetamol molecules and assessed the stability and reusability of the catalyst.
Article
Engineering, Electrical & Electronic
K. Cherifi, Y. Azoudj, G. Rekhila, S. Merrad, Z. Meguellati, S. Omeiri, M. Trari
Summary: The substituted perovskite BaSn0.95Co0.05O3 (BSCO) was synthesized and characterized for its crystal structure, morphology, and properties. The material showed a single-phase cubic structure, with crystal field splitting resulting in a black color and low spin configuration. It exhibited semiconducting behavior in terms of electrical conductivity, with p-type conduction observed. The material also demonstrated promising photocatalytic activity in the degradation of a recalcitrant dye under solar light.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Composites
Farhad Gholinezhad, Reza Golhosseini, Omid Moini Jazani
Summary: By modifying epoxy resin with methyl phenyl silicone (MPS), acrylonitrile butadiene styrene (ABS) and graphene oxide (GO), the thermal, mechanical and adhesion properties were improved. The addition of MPS, ABS and GO significantly increased the single lap shear strength and tensile strength of the composite joints, while also enhancing the thermal stability of the modified epoxy resin.
POLYMER COMPOSITES
(2022)
Article
Mechanics
Peirong Ren, Chengzhang Zhao, Zhengxing Zuo, Youfu Shui, Dongwei Li, Weiqing Huang
Summary: The study investigates the impact of thermal degradation on the mechanical properties of cast Al-Si alloys for cylinder heads. Thermal degradation primarily affects the tensile strength due to the coarsening and coalescence of the 0 phase (Al2Cu) caused by precipitation reaction. At 250 degrees C, the exposure temperature is the main factor for degradation, while at 200 degrees C, the exposure time has a greater influence. Thermal degradation significantly increases the rate of long crack growth by enlarging the plasticity scale ahead of the crack tip. The effective stress intensity factor range (ΔKeff) for thermally exposed alloys is modified by considering the plasticity zone size and the reduction in crack resistance from precipitates.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Polymer Science
Jiabao Feng, Yi Wang, Xiaogang Qin, Yadong Lv, Yajiang Huang, Qi Yang, Guangxian Li, Miqiu Kong
Summary: This work reveals the degradation in properties and molecular mechanisms of colorless transparent polyimide (CPI) films with different functional groups under photo-oxidation. It is found that the mechanical properties and thermal stability of CPI films are decreased, and the yellowness index is increased significantly after photo-oxidation. The molecular mechanisms involved in the degradation process are proposed, and the enrichment of C-O on the surface of CPI films is observed.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Engineering, Environmental
Daniele Battegazzore, Fulvia Cravero, Alberto Frache
Summary: The survey conducted in Italy at the end of 2020 found that disposable face masks were the most used by the population during the Covid-19 pandemic, leading to a considerable amount of waste. It was proposed to collect and recycle these masks separately to reduce costs and simplify the sanitization process. The recycled materials from the filtering face masks showed lower viscosity but comparable toughness, superior stiffness, and strength compared to the mixed polyolefin, providing potential for industrial recycling of plastic materials.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Chemistry, Multidisciplinary
Giulio Latini, Matteo Signorile, Francesca Rosso, Andrea Fin, Marta D'Amora, Silvia Giordani, Fabrizio Pirri, Valentina Crocella, Silvia Bordiga, Sergio Bocchini
Summary: Choline/amino acid-based ionic liquids were synthesized through ionic metathesis and their CO2 absorption properties were evaluated using various experimental approaches. These ILs demonstrated high molar uptakes and the ability to release CO2 under mild conditions, while also showing non-toxicity and high biocompatibility in zebrafish studies.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Materials Science, Multidisciplinary
Alessandro Pedico, Sergio Bocchini, Elena Tresso, Andrea Lamberti
Summary: A novel functionalized graphene oxide (fGO) is proposed for water desalination in this study. The fGO is obtained through functionalization and coating to create a porous electrode, which shows remarkable improvement in desalination performance. These findings lay the groundwork for future research.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Green & Sustainable Science & Technology
E. Maruccia, M. A. O. Lourenco, T. Priamushko, M. Bartoli, S. Bocchini, F. C. Pirri, G. Saracco, F. Kleitz, C. Gerbaldi
Summary: D-glucosamine was used as a non-toxic and sustainable C/N source to synthesize nitrogen-containing CMK-8 ordered mesoporous carbons. The resulting NOMCs exhibited large surface area and excellent pore ordering, with high CO2 adsorption capacity and selectivity under various conditions. The combination of a suitable C/N precursor and hard templating synthetic route proved effective in obtaining high-performing, sustainable, and reusable selective CO2 sorbents.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Materials Science, Multidisciplinary
D. Battegazzore, F. Cravero, G. Bernagozzi, A. Frache
Summary: The study successfully developed a material for 3D printing by adding talc to polypropylene, partially replacing mask material, and validated its mechanical properties and microstructure.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Daniele Sassone, Juqin Zeng, Marco Fontana, M. Amin Farkhondehfal, Candido F. Pirri, Sergio Bocchini
Summary: This study presents a sonochemical synthesis method to anchor tin ions on a polyaniline matrix, forming a chlorine-doped SnO2 catalyst. The catalyst shows great selectivity in producing formate and exhibits high Faradaic efficiency and stability, making it a promising alternative for reducing metal usage in the overall catalytic process.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Daniele Sassone, Sergio Bocchini, Marco Fontana, Clara Salvini, Giancarlo Cicero, Michele Re Fiorentin, Francesca Risplendi, Giulio Latini, M. Amin Farkhondehfal, Fabrizio Pirri, Juqin Zeng
Summary: By designing a dual-function electro-organocatalyst, we have successfully catalyzed the reduction of carbon dioxide to carbon monoxide. The catalyst forces carbon dioxide into a non-linear geometry, inducing internal electron charge rearrangement, and combines chemical activation with electrochemical catalysis to achieve efficient conversion.
Article
Chemistry, Physical
Mattia Bartoli, Candido Fabrizio Pirri, Sergio Bocchini
Summary: This study investigated the role of oxidized carbon nanotubes in the thermal degradation of ammonia borane, revealing that the oxidation degree can affect the degradative process by reducing activation energy, activating/suppressing different pathways, and modulating solid-state reactivity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Polymer Science
Alessandro Beduini, Domenico Albanese, Federico Carosio, Amedea Manfredi, Elisabetta Ranucci, Paolo Ferruti, Jenny Alongi
Summary: A novel polyamidoamine with a disulfide group and phosphonate groups per repeat unit (M-PCASS) was synthesized and its flame retardant efficacy for cotton was investigated. The results showed that M-PCASS had better flame retardant performance than M-CYSS, with no afterglow in horizontal flame spread tests and afterglow suppression in vertical flame spread tests. In oxygen-consumption cone calorimetry tests, M-PCASS reduced heat release rate, CO2 emission, and smoke release of cotton, leaving a residue. These findings suggest that M-PCASS may be suitable for flame retardant applications requiring smoke suppression and reduction of total gas released.
Article
Polymer Science
Paolo Ferruti, Jenny Alongi, Emanuele Barabani, Amedea Manfredi, Elisabetta Ranucci
Summary: Polyamidoamine hydrogels were reinforced with raw silk fibers via covalent bonding between the amine groups in the lysine residues and the acrylamide terminals of the M-AGM oligomer. These membranes showed potential in purifying Cr(VI)-contaminated water to below 50 ppb. The use of renewable sources, environmentally friendly preparation process, and successful achievement of the goal meet eco-design requirements.
Article
Polymer Science
Giulia Bernagozzi, Daniele Battegazzore, Rossella Arrigo, Alberto Frache
Summary: Composites based on a heterophasic polypropylene copolymer with various micro-sized and nano-sized fillers were formulated for Material Extrusion (MEX) additive manufacturing processing. The thermal properties, rheological behavior, and morphology of the materials were examined to understand the influence of the embedded fillers on their MEX processability. Composites with 30 wt% talc or calcium carbonate and 3 wt% nanoclay exhibited the best combination of thermal and rheological properties, and were selected for 3D printing. The mechanical properties of the 3D-printed specimens were modulated by the type of filler used, offering potential for producing printed parts with desirable characteristics and functionalities.
Article
Chemistry, Applied
Giuseppe Soavi, Francesca Portone, Daniele Battegazzore, Chiara Paravidino, Rossella Arrigo, Alessandro Pedrini, Roberta Pinalli, Alberto Fina, Enrico Dalcanale
Summary: This work presents a post-polymerization method for preparing vitrimers using vinylogous urethane transamination in linear phenoxy resins. Phenoxy vitrimers are obtained by partially converting hydroxyl groups to acetoacetates (AcAc) and then crosslinking with m-xylylenediamine. Different vitrimers with varying crosslinking densities were synthesized by adjusting the density of AcAc moieties. The conversion of linear polymers to dynamic crosslinked networks was confirmed, and the vitrimers showed enhanced adhesive properties and good recyclability.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Materials Science, Composites
Marta Zaccone, Irene Kociolek, Alberto Frache, Costanzo Bellini, Vittorio Di Cocco, Marco Monti
Summary: This paper evaluates the abrasion resistance of a carbon fiber composite filled with layered-silicate clay nanoparticles. The study investigates the dispersion and performance of the clay-epoxy nanocomposite, and determines the optimal content for fiber composite production. The nanocomposite mixture is prepared by dispersing clay nanoparticles in the epoxy monomer, followed by vacuum infusion to produce the fiber reinforced composite. The presence of nanoclay reduces weight loss and damage on the impacted surface.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Alberto Martis, Marco Fontana, Mara Serrapede, Stefano Bianco, Angelica Chiodoni, Candido Fabrizio Pirri, Sergio Bocchini
Summary: Graphene, a 2D carbon material with unique features, can be dispersed in low-boiling green solvents to reduce environmental impact. The polymerization of graphene using sonication and a microwave reactor results in a stable material that can be used for mass production and solvent removal.
COLLOIDS AND INTERFACES
(2022)
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)
