Article
Polymer Science
Akihiko Toda
Summary: The crystallization kinetics of poly(butylene terephthalate) under high supercooling was investigated using Temperature-Modulated Fast Scanning Calorimetry (TM-FSC). The study found a temperature dependence of crystal growth rate and compared it with the peak time of heat flow during isothermal crystallization. The crystal growth rate was found to be practically determined by a mobility factor near the glass transition.
Article
Chemistry, Multidisciplinary
Rong Wang, Xiaojie Sun, Lanlan Chen, Wenbin Liang
Summary: In this study, biodegradable blends of PGA and PBAT with in situ compatibilization using MDI were prepared. The addition of PBAT was found to increase the complex viscosity and storage modulus of the blends, leading to improved compatibility and impact strength. The morphology of the dispersed phase evolved from spherical structure to in situ microfiber, enhancing interfacial adhesion and improving toughness.
Article
Materials Science, Multidisciplinary
Xiangyu Yan, Chengkai Liu, Liting He, Chentao Li, Dongmei Wang, Guangfeng Wu, Junjia Bian, Yan Zhao, Huiliang Zhang
Summary: In this study, poly(L-lactic acid) (PLLA) and poly(D-lactic acid) (PDLA) were blended with PBST to form stereocomplex poly(lactic acid) (sc-PLA) in situ during melt blending process. The PBST/sc-PLA blends showed improved mechanical properties and heat resistance compared to neat PBST. Additionally, the hydrolytic degradation of the PBST/sc-PLA blends was enhanced.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Characterization & Testing
Laura Aliotta, Ilaria Canesi, Andrea Lazzeri
Summary: The preferential distribution of ATBC plasticiser in PLA-PBAT blends was studied, showing a preference for distribution in the PLA phase over the PBAT phase. Dynamic mechanical thermal analysis and analysis of Hansen Solubility Parameters supported these findings.
Article
Polymer Science
Niki Poulopoulou, Nathanael Guigo, Nicolas Sbirrazzuoli, Dimitrios G. Papageorgiou, Dimitrios N. Bikiaris, George N. Nikolaidis, George Z. Papageorgiou
Summary: Eco-friendly engineering polyesters derived from biomass-based monomers, such as 2,5-furandicarboxylic acid (2,5-FDCA), have attracted significant attention from industry and academia. Poly(butylene 2,5-furandicarboxylate) (PBF) was synthesized and blended with its terephthalate counterpart, poly (butylene terephthalate) (PBT), with a detailed study on thermal properties, crystallization behavior, and miscibility. Reactive blending was investigated to improve the compatibility of the blends.
Review
Polymer Science
Serena Coiai, Maria Laura Di Lorenzo, Patrizia Cinelli, Maria Cristina Righetti, Elisa Passaglia
Summary: Poly(lactic acid) (PLA) is a widely produced biobased, biodegradable and biocompatible polyester. Although it shares similarities with petroleum-based polymers, its high brittleness and low toughness limit its utilization, prompting the blending with other biobased and biodegradable polymers. By incorporating appropriate additives and solid nanoparticles, the toughness and ductility of PLA can be improved, enhancing its mechanical performance, thermal stability and gas/vapor barrier properties.
Article
Polymer Science
Marica Bianchi, Andrea Dorigato, Marco Morreale, Alessandro Pegoretti
Summary: This research investigates the microstructural, thermomechanical, and shape memory properties of PLA/PBAT blends prepared by melt compounding. The PLA and PBAT phases were found to be immiscible with low interfacial adhesion. The addition of PBAT slightly improved the thermal stability of PLA. However, it decreased the stiffness and strength of the blends and impaired the shape memory performance of PLA. By adding suitable compatibilizers, the physical properties of these innovative biodegradable polymer blends could be further enhanced.
Article
Polymer Science
Pengwu Xu, Ce Zhang, Shuai Tan, Deyu Niu, Weijun Yang, Yujie Sun, Piming Ma
Summary: The effects of different molecular weight (Mw) of PGMA on PLA/PBAT blends were investigated. It was found that Mw played a crucial role in the dispersion and mechanical properties of the blends. Low Mw PGMA improved the interfacial adhesion between PLA and PBAT, resulting in increased tensile strength and elongation at break of the blends. On the other hand, high Mw PGMA led to non-uniform dispersion of PBAT in the PLA matrix, resulting in decreased mechanical properties.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Chemistry, Multidisciplinary
Ahmed Nasr, Petr Svoboda
Summary: The fusion temperature has a tremendous effect on the crystallization kinetics of PBT. The crystallization peak shifted towards lower temperatures by 22 °C and the kinetics changed about ten times. Increasing fusion temperature led to a noticeable shift in the heat flow curve towards lower temperatures, indicating a significant change in the number of nucleation centres. The study provides insights into the crystallization behaviour of PBT at different fusion temperatures and cooling rates.
Article
Polymer Science
Juviya Mathew, Jyoti Prakash Das, Manoj Tp, Sudheer Kumar
Summary: The study focused on developing a biodegradable filament made from renewable resources as a more environmentally friendly alternative to petroleum-based polymer filament. By incorporating PBAT into the PLA matrix, the mechanical properties of the filament were improved, making it suitable for 3D printing applications. Additionally, the thermal and morphological characteristics of the blend filament were examined through various testing methods.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Polymer Science
Akihiko Toda, Yoshitomo Furushima, Christoph Schick
Summary: The relationship between changes in crystallization kinetics and crystal domains of poly(butylene terephthalate) was investigated under isothermal conditions. The study found that the nucleation and growth kinetics of the crystal domains exhibited a continuous change within a certain temperature range. This change corresponded to the nucleation mode for spherical domains, such as spherulites and nodules, which depended on whether nucleation occurred from foreign heterogeneities or from the homogeneous melt. The morphology of the crystal domains, specifically the size and formation of spherulites and granular nodules, was identified as a factor contributing to the changes in crystallization kinetics.
Article
Polymer Science
Akihiko Toda, Yoshitomo Furushima, Christoph Schick
Summary: The relationship between the changes in the crystallization kinetics and the crystal domains of poly(butylene terephthalate) was investigated under isothermal conditions. The Avrami exponent n characterizing the nucleation and growth kinetics of the crystal domains exhibited a continuous change within the target temperature range, indicating a change in the nucleation mode for spherical domains. The morphology of the crystal domains responsible for this change was identified, with a continuous change in the size of spherulites observed. The formation of 10 nm scale granular nodules with high nuclei density at low temperatures was also observed.
Article
Polymer Science
Deyu Niu, Pengwu Xu, Bo Liu, Hanghang Shao, Chaobin He, Tianxi Liu, Weijun Yang, Piming Ma
Summary: This study presents the preparation of robust and high-barrier PGA/PBAT films through reactive compatibilization, biaxial drawing, and constrained annealing processes. The nanocrystals formed during biaxial drawing and constrained annealing enhance the tensile strength and barrier properties. Reactive compatibilization plays a crucial role in improving the ductility and barrier properties of the films.
Article
Biochemistry & Molecular Biology
Guoqiang Wang, Li Zhang, Xiang Chi
Summary: Due to its superior tensile strength, biodegradability, and biocompatibility, poly(lactic acid) (PLA) has become a growth-oriented biodegradable material. However, its poor ductility has limited its practical applications. To address this, ductile blends were prepared by melt-blending poly(butylene succinate-co-butylene 2,5-thiophenedicarboxylate) (PBSTF25) with PLA, which significantly improved the ductility of PLA. The addition of PBSTF25 promoted cold crystallization and stretch-induced crystallization of PLA, and the resulting blends exhibited improved ductility and processing properties. The toughening effect of PBSTF25 was found to be better than that of poly(butylene succinate).
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Polymer Science
Xiaolong Li, Shang Gong, Le Yang, Xiaosong Xia, Changkai Linghu, Jun Wang, Zhu Luo
Summary: In this study, rapidly degradable PLA/PBAT/FeCl3 blends were successfully prepared by adding a small amount of FeCl3 using the melt blending method. The materials maintained appropriate mechanical strength while showing a high degradation rate, with P/P-1 exhibiting promising potential value for applications in rapidly degrading solid waste treatment and biomedical materials such as artificial ureters.
Article
Chemistry, Physical
Navajsharif S. Shaikh, Shivaji B. Ubale, Vikas J. Mane, Jasmin S. Shaikh, Vaibhav C. Lokhande, Supareak Praserthdam, Chandrakant D. Lokhande, Pongsakorn Kanjanaboos
Summary: High energy density supercapacitors are needed for recent electronic appliances and hybrid vehicles, which can be achieved by designing proper electrode materials and electrolytes. This review discusses different energy storage mechanisms, engineering of electrode materials, and investigation of hybrid electrodes, showing great potential for commercial usage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
Janaina S. Santos, Mohammad Fereidooni, Victor Marquez, Malathi Arumugam, Muhammad Tahir, Supareak Praserthdam, Piyasan Praserthdam
Summary: This study investigated the facile fabrication of interfacial defects assisted amorphous TiO2 nanotubes arrays for promoting gas-phase CO2 photoreduction to methane. The am-TNTA catalyst demonstrated high chemical stability, a large exposed surface area, and a significant number of surface traps that can reduce the recombination of charge carriers. The enhanced photocatalytic activity of am-TNTA can be attributed to its amorphous structure with surface defects, particularly OH groups acting as electron traps to increase electron lifetime, facilitating CO2 conversion to methane.
Article
Energy & Fuels
Navajsharif S. Shaikh, Vaibhav C. Lokhande, Pimsuda Pansa-Ngat, Shivaji Ubale, Jasmin S. Shaikh, Supareak Praserthdam, Sandip R. Sabale, Chandrakant D. Lokhande, Taeksoo Ji, Pongsakorn Kanjanaboos
Summary: The thermal annealing of graphene oxide in a H2S atmosphere was used to obtain sulfur-doped graphene (SG) for supercapacitor applications. SG electrode exhibited high electrical conductivity and interconnected micro-pore structure, facilitating fast transportation of electrons and ions at the electrode-electrolyte interface. Both solid-state and quasi-solid-state hybrid supercapacitors showed high energy density and cycling stability.
Article
Chemistry, Multidisciplinary
Nutchapon Chotigkrai, Phakpum Tannititam, Sunthon Piticharoenphun, Narit Triamnak, Supareak Praserthdam, Piyasan Praserthdam
Summary: The study investigated the effect of Zn doping on Cu-exchanged mordenite in the oxidation of methane to methanol. It was found that Zn doping increased the methanol yield, with 3 wt% Zn doping showing the highest activity.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Anum Shahid Malik, Taifeng Liu, Meena Rittiruam, Tinnakorn Saelee, Juarez L. F. Da Silva, Supareak Praserthdam, Piyasan Praserthdam
Summary: Density functional theory was used to analyze the high photocatalytic activity of Au-Ag high-noble alloys catalysts supported on rutile TiO2 during the oxygen evolution of water oxidation reaction. The study found that the most stable location of the Au-Ag bimetal-support interface is the bridging row oxygen vacancy site. The Au site was identified as the most active for OER catalysis, while the photocatalytic activity of other active sites followed the trend of Au > Ag > Ti. The formation of trap states and the electron redistribution from Ag to Au were identified as factors contributing to the catalyst's high activity.
SCIENTIFIC REPORTS
(2022)
Review
Engineering, Environmental
Mohan Gopalakrishnan, Sunantha Ganesan, Mai Thanh Nguyen, Tetsu Yonezawa, Supareak Praserthdam, Rojana Pornprasertsuk, Soorathep Kheawhom
Summary: Rechargeable aqueous zinc-ion batteries (AZIBs) have gained much interest due to their high energy density, safety, and low cost. However, issues such as anode side reactions, passivation, corrosion, hydrogen evolution, and Zn dendrite growth continue to hinder their widespread application. This review presents metal-organic frameworks (MOFs) as potential solutions to these problems by enhancing the performance of Zn anode materials, electrolytes, and electrolyte additives through their porous structure and active sites. The review also proposes directions for the rational design of MOF-based Zn anodes and understanding the mechanisms affecting Zn2+ solvation in high-performance AZIBs, aiming to extend the cycling lifetime and promote the commercialization of AZIBs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Tinnakorn Saelee, Suphawich Boonchuay, Attachai Sriwattana, Meena Rittiruam, Patcharaporn Khajondetchairit, Supareak Praserthdam, Annop Ektarawong, Bjorn Alling, Piyasan Praserthdam
Summary: Electricity production from clean energy sources has gained attention, but many power plants still use coal and natural gas, which produce toxic gases. Converting CO into a useful precursor before supplying it to chemical processes is effective, using a highly effective catalyst such as PtPdRhFeCo HEA(1 1 1) surface. This surface has unique electronic properties that weaken CO interaction and strengthen CO2 interaction, preventing CO poisoning and trapping CO2 after WGSR.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jakapob Noppakhun, Meena Rittiruam, Tinnakorn Saelee, Jasmin Shamshoddin Shaikh, Patcharaporn Khajondetchairit, Supareak Praserthdam, Piyasan Praserthdam
Summary: The integrated carbon capture and conversion (ICCC) is a promising catalytic process to produce syngas from CO2 and CH4. The Ratings concept based on density functional theory (DFT) is applied to overcome the problems caused by inconsistent feed ratio. Catalyst identification and optimization are carried out to improve performance and account for deactivation over time. Temperature change has a greater impact on catalysts compared to feed ratio.
Article
Multidisciplinary Sciences
Meena Rittiruam, Sorawee Setasuban, Jakapob Noppakhun, Tinnakorn Saelee, Annop Ektarawong, Nuttanon Aumnongpho, Suphawich Boonchuay, Patcharaporn Khajondetchairit, Supareak Praserthdam, Bjorn Alling, Piyasan Praserthdam
Summary: The PtPd-based high-entropy alloy (HEA) catalysts are investigated for water-gas shift reaction (WGSR). Density functional theory (DFT) and Gaussian process regression are used to study the electronic properties of HEA surfaces. The strong H2O-active-site interaction with highly negative adsorption energy (E-ads) is considered as a criterion to explore potential PtPd-based WGSR catalyst candidates, such as PtPdRhAgCo, PtPdRuAgCo, PtPdRhAgFe, and PtPdRuAgFe.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Physical
Patcharaporn Khajondetchairit, Meena Rittiruam, Tinnakorn Saelee, Pussana Hirunsit, Supareak Praserthdam, Suwit Suthirakun
Summary: This work studied the improved hydrogen storage kinetics on VH/Mg2NiH4(101) using density functional theory. It was found that molecular hydrogen desorption improved on this system and hydrogen vacancy sites (HV) were formed at the interfacial sites. The investigation provided insights into the desorption and diffusion processes at the active site, which can guide the design of high-performance Mg-based hydrogen storage materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Amruta Koli, Abhishek Kumar, Akshata Pattanshetti, Amit Supale, Kalyanrao Garadkar, Jian Shen, Jasmin Shaikh, Supareak Praserthdam, Radha Kishan Motkuri, Sandip Sabale
Summary: This work presents an efficient method for synthesizing hierarchically porous carbon using wheat bran waste. The obtained carbon material shows high CO2 capture capacity, rapid dye removal capacity, and superior electrocatalytic activity.
Article
Multidisciplinary Sciences
Chanthip Wangphon, Tinnakorn Saelee, Meena Rittiruam, Patcharaporn Khajondetchairit, Supareak Praserthdam, Annop Ektarawong, Bjoern Alling, Piyasan Praserthdam
Summary: Density functional theory is used to compare the catalytic performance of high entropy alloy (HEA) and conventional catalysts in the passive NH3-SCR process. It is found that HEA has stronger NO adsorption and more spontaneous reaction processes, but NH3 production is more difficult.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Multidisciplinary Sciences
Meena Rittiruam, Pisit Khamloet, Potipak Tantitumrongwut, Tinnakorn Saelee, Patcharaporn Khajondetchairit, Jakapob Noppakhun, Annop Ektarawong, Bjorn Alling, Supareak Praserthdam, Piyasan Praserthdam
Summary: This study investigates the impact of host elements on the electronic properties of active sites in high-entropy-alloy (HEA) catalysts using density functional theory (DFT). The selection of appropriate host elements significantly affects the surface structures, electronic, and catalytic properties of the system. Parameters such as adsorption energy, d-band center, Bader charge, Zero-point energy, and entropy are used for accuracy verification compared to the original surface. A novel guideline for active-site model construction is proposed, demonstrated by PtPdFeCoNi high-entropy alloys. The host element selection is crucial for the electronic structure and electrocatalytic properties of active-site models.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Navajsharif S. Shaikh, Vaibhav C. Lokhande, Taeksoo Ji, Shivaji Ubale, Vikas J. Mane, Chandrakant D. Lokhande, Haseen M. Shaikh, Jasmin S. Shaikh, Supareak Praserthdam, Sandip Sabale, Pongsakorn Kanjanaboos
Summary: In recent years, modern appliances require high energy density with a burst power supply. Hybrid supercapacitors show high performance based on high energy density without compromising power density and stability over thousands of charge-discharge cycles. In this work, the optimized hybrid electrodes using lanthanum-doped hematite (lanthanum-doped iron oxide) as a negative electrode and hydrous cobalt phosphate as a battery-type positive electrode have been successfully fabricated via a simple hydrothermal method and a facile co-precipitation method, respectively. The hybrid capacitor device based on these electrodes exhibited high energy density, capacitance retention, and excellent electrochemical performance.
DALTON TRANSACTIONS
(2022)
Article
Nanoscience & Nanotechnology
Sirawat Boonpai, Sippakorn Wannakao, Joongjai Panpranot, Supareak Praserthdam, Prae Chirawatkul, Piyasan Praserthdam
Summary: Through in situ DRIFTS measurements, it was found that the Lewis acid sites on the catalyst surface could be transformed into new Bronsted acid sites upon hydrogen exposure. The adsorbed ammonia on Lewis acid sites migrated to Bronsted acid sites forming NH4+. The results demonstrate that the new Bronsted acid sites on the catalyst surface are formed by dissociated H atoms as Si-OH hydroxyl species.
ADVANCES IN NANO RESEARCH
(2022)
