Article
Polymer Science
Kazuki Matsuura, Keiichi Kuboyama, Toshiaki Ougizawa
Summary: Poly(n-butyl acrylate) (PnBA) and silica nanoparticle composites were studied using various analytical techniques, revealing the presence of amorphous bulk and interfacial regions in the composites. The mobility of side chains at the interfaces differed from that in the bulk polymer, attributed to interactions between the carbonyl groups in PnBA and the silica surfaces. This indicated a closer proximity of PnBA main chains near interfaces with silicon oxide compared to those in the bulk polymer.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Anna Khlyustova, Nikolay Sirotkin, Anton Kraev, Alexander Agafonov, Valery Titov
Summary: This article presents a new one-step method for producing composites based on water-soluble polyvinyl alcohol (PVA) and metal oxides (AlOOH, CuO, and ZnO) using underwater plasma. The results showed that metal oxides are embedded in the polymer matrix and the electrical properties of the composites are suitable for electronic devices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Mohamed H. Darweesh, Safaa H. El-Taweel, Bernhard Stoll
Summary: The thermal and mechanical properties of binary blends of polypropylene (PP) with a statistical copolymer (VM) were investigated. The two components were found to be miscible in the melt. DSC testing showed that the crystallization temperature of PP decreased with increasing VM content. The measurement of viscoelastic properties revealed a three-phase model, with VM mainly located in the mobile amorphous phase and PP in the rigid amorphous phase.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Saeed Dolatshah, Shervin Ahmadi, Amir Ershad-Langroudi, Hedieh Jashni
Summary: This study investigated the synergistic effect of different chain extenders and catalysts on the rheological behavior of PET, finding that a combination of PMDA and PENTA at 1.5% and 0.5% respectively resulted in the best rheological properties for modified PET. Additionally, DBTDL acted as an accelerator for chain extension reaction, improving the rheological properties of PET by increasing the chain extending rate. Thermal properties of modified PET were also studied using differential scanning calorimetry.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Applied
Bianca C. Marques, Lina M. Rayo-Mendez, Carmen C. Tadini
Summary: This study characterized an ingredient containing non-starch polysaccharides (NSP) from overripe bananas using DSC and vapor sorption isotherms, providing valuable information on its physical properties and response to temperature and water interactions for its application as a fiber flour aggregate in food preparations. Thermal analyses and vapor sorption isotherms results show similarities to standard samples, and the Kwei model was used to fit glass transition curves, allowing exploration of material stability and structural changes due to glass transition.
Article
Chemistry, Medicinal
Ekaterina Bogdanova, Anna Millqvist Fureby, Vitaly Kocherbitov
Summary: The paper presents a DSC study on ice crystallization and melting in a sucrose-water system. It investigates the influence of cooling and heating rates on the thermal behavior of sucrose-water solutions and explores the reasons for the existence of two steps on DSC heating curves. The results show that diffusion of water can be a limiting factor for ice growth and melting in the sucrose-water system.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2022)
Article
Engineering, Chemical
Carlos R. Lopez-Barron
Summary: A study was conducted on statistical copolymers of 4-vinylbiphenyl and styrene to investigate their microstructure and rheological properties. It was found that the glass transition temperature of the copolymers decreases nonlinearly with increasing styrene content, and the friction coefficient also exponentially decreases with styrene content, leading to increased strain hardening during extensional startup flow measurements.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Polymer Science
Andrea Todorovic, Katharina Resch-Fauster, Arunjunai Raj Mahendran, Gernot Oreski, Wolfgang Kern
Summary: The study found that the type and amount of hardener significantly affect the curing reaction and performance characteristics of epoxidized linseed oil, with the optimal mixing ratio needing to be experimentally determined rather than calculated. The investigated thermosets exhibit different glass transition temperatures and mechanical performances after curing, ranging from soft and flexible to stiff and rigid.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Physics, Multidisciplinary
Semen S. Sologubov, Alexey V. Markin, Natalia N. Smirnova, Elena S. Chamkina, Irina Yu. Krasnova, Sergey A. Milenin, Olga A. Serenko, Zinaida B. Shifrina, Aziz M. Muzafarov
Summary: The molar heat capacity of a first-generation hybrid dendrimer with a carbosilane core/phenylene shell structure was measured for the first time and its thermodynamic properties were calculated in a temperature range of 6-600 K. The results were compared with literature data on some first-generation organosilicon and pyridylphenylene dendrimers.
Article
Food Science & Technology
Zun Wang, Suwimol Chockchaisawasdee, John Ashton, Zhongxiang Fang, E. Costas Stathopoulos
Summary: This study investigated the effects of temperature and initial moisture content on the critical relative humidity of whole-grain breakfast wheat biscuit using DVS and DSC methods. The results showed that RHc values were positively correlated with M0 and negatively correlated with temperature. Wheat biscuits with 7% moisture content were found to be optimally stored at RH below 43.2% at 20 degrees C.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
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
Polymer Science
Qirui Yi, Jingyu Li, Runhua Zhang, Erni Ma, Ru Liu
Summary: Small particle diameter thermally expandable microspheres were prepared with varying homogenization speed. The optimized microspheres with small particle diameters showed stable expansion properties in wood, indicating potential for wood impregnation and successful expansion.
JOURNAL OF APPLIED POLYMER SCIENCE
(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
Thermodynamics
Semen S. Sologubov, Alexey V. Markin, Yuliya A. Sarmini, Natalia N. Smirnova, Konstantin L. Boldyrev, Elena A. Tatarinova, Ivan B. Meshkov, Aziz M. Muzafarov
Summary: In this study, the calorimetric properties of second and fourth generation siloxane dendrimers with trimethylsilyl terminal groups were measured and analyzed. The thermodynamic characteristics and fundamental functions of the dendrimers were calculated, showing a correlation between thermodynamic properties and molecular mass. The results provide valuable insights into the thermodynamic behavior of siloxane dendrimers.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2021)
Article
Polymer Science
Dekai Liu, Yirui Shen, Phyu Thin Wai, Haryono Agus, Pingbo Zhang, Pingping Jiang, Zhixin Nie, Guoqiang Jiang, Huihang Zhao, Minzhong Zhao
Summary: In this study, a sustainable and efficient plasticizer AC-FAME-TAE was synthesized using waste cooking oil as the main raw material. The plasticizing efficiency of AC-FAME-TAE for PVC was excellent, with mechanical properties comparable to DOP and good thermal stability and solvent resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Thermodynamics
Ivan Argatov, Vitaly Kocherbitov
Summary: The minimal model is formulated based on the Arrhenius law for describing enthalpy relaxation in glass transition. The model is analyzed without introducing additional simplifying assumptions of thermodynamic nature and provides simple approximations for certain thermodynamic quantities.
CONTINUUM MECHANICS AND THERMODYNAMICS
(2021)
Article
Thermodynamics
Vitaly Kocherbitov
Summary: The sorption calorimetry method developed by Wadso and co-workers is successful in measuring both water sorption isotherm and sorption enthalpy, though accuracy can be affected by diffusion. A new calculation method is proposed to eliminate these effects and improve the accuracy of enthalpy measurements. This new method has been successfully tested on previously published data and can be recommended for future experiments.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2021)
Article
Chemistry, Physical
Tania K. Lind, Emelie J. Nilsson, Benjamin Wyler, Dieter Scherer, Tatyana Skansberger, Maxim Morin, Vitaly Kocherbitov, Johan Engblom
Summary: This study investigated the complex composition of polysorbate 80 (PS80) and found a correlation between the average length of ethylene oxide (EO) chains in the headgroup and the ability of individual compounds to crystallize. The study also determined the critical number of EO units required for headgroup crystallization and revealed that reducing the amount of linear by-products can prevent product crystallization via the EO chains.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Andriani Tsompou, Vitaly Kocherbitov
Summary: The study suggests that using purified water for washing and cleaning can improve the efficiency of impurity removal compared to regular tap water. The mechanism of cleaning with purified water may be due to its lower ionic strength, which increases electrostatic repulsion and promotes the cleaning process.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Medicinal
Ekaterina Bogdanova, Anna Millqvist Fureby, Vitaly Kocherbitov
Summary: The paper presents a DSC study on ice crystallization and melting in a sucrose-water system. It investigates the influence of cooling and heating rates on the thermal behavior of sucrose-water solutions and explores the reasons for the existence of two steps on DSC heating curves. The results show that diffusion of water can be a limiting factor for ice growth and melting in the sucrose-water system.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2022)
Article
Thermodynamics
Ekaterina Bogdanova, Vitaly Kocherbitov
Summary: This study critically analyzes different methods of calculating the activation energy of relaxation in a sucrose-water system using differential scanning calorimetry data. The results show that a thermal cycle with equal cooling and heating rates provides the most reliable data set, and the determination of the glass transition temperature using the inflection point is recommended for calculations. Heating scans provide more reliable results than cooling scans for activation energy calculations. Additionally, a simple method based on the width of the glass transition region shows reasonable results for single scan experiments. The results also demonstrate that water decreases the activation energy of the relaxation process in sucrose matrix.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Biochemistry & Molecular Biology
Ivan Argatov, Johan Engblom, Vitaly Kocherbitov
Summary: In this study, a new flexible fitting model is introduced to validate the water sorption characteristics of the components in the stratum corneum. The results show that the lipids content has a negligible effect on the sorption of stratum corneum, and the overall sorption behavior can be well explained by the rule of mixtures.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES
(2022)
Review
Chemistry, Multidisciplinary
Francisco M. Baena-Moreno, Emmanouela Leventaki, Alexander Riddell, Joanna Wojtasz-Mucha, Diana Bernin
Summary: In order to reduce carbon dioxide emissions, industrial effluents, waste, and residues can be utilized to capture carbon dioxide. Different types of waste have varying capture capacities, with cement waste and flue gas desulfurization gypsum waste showing the highest capture capacity per ton of waste.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Ivan Argatov, Felix Roosen-Runge, Vitaly Kocherbitov
Summary: This study develops a concentration-dependent diffusion model based on Fick's law of diffusion, and explains age-related changes through the analysis of water diffusion through the skin.
SCIENTIFIC REPORTS
(2022)
Article
Biophysics
Eva Slaninova, Stanislav Obruca, Vitaly Kocherbitov, Petr Sedlacek
Summary: Microorganisms have developed various approaches to protect themselves from inconvenient conditions, including the accumulation of compatible solutes. The monomer unit 3-hydroxybutyrate (3HB) found in poly(3-hydroxybutyrate) (PHB)-accumulating cells acts as a protective agent against heat and oxidative stress, as well as a cryo-protectant. The study shows that Na3HB is a highly effective cryoprotectant, capable of depressing freezing point and generating nonfrozen water.
BIOPHYSICAL JOURNAL
(2023)
Article
Chemistry, Physical
Vitaly Kocherbitov
Summary: A water sorption model is proposed to describe the hydration forces between surfactant bilayers in nonionic surfactant systems. The model is validated through molecular dynamics simulations and shows good agreement with experimental data. The analysis reveals weakly endothermic hydration and a non-exponential decay of hydration forces.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Andriani Tsompou, Vitaly Kocherbitov
Summary: In order to reduce the negative impact of surfactants, the use of purified water in washing has been suggested. Previous research has shown that purified water promotes electrostatic interactions between the surface and the soil, facilitating the roll-up mechanism. However, the effectiveness of washing may vary depending on the amount of remaining soil.
Article
Medicine, Research & Experimental
Ekaterina Bogdanova, Sebastian Lages, Tuan Phan-Xuan, Md. Arif Kamal, Ann Terry, Anna Millqvist Fureby, Vitaly Kocherbitov
Summary: Freeze-drying of lysozyme with sucrose excipient increases residual moisture content and glass transition temperature (T(g)). Lysozyme does not participate in the sucrose matrix glass transition, but the confinement of amorphous sucrose domains between lysozyme molecules leads to an increase in T(g). Hydration behavior of lysozyme-sucrose formulation is similar to that of pure amorphous sucrose. SAXS analysis demonstrates that lysozyme retains its native state in a solid sucrose matrix before unfolding. These findings contribute to a better understanding of protein-excipient mixtures and aid in the development of improved biologic formulations.
MOLECULAR PHARMACEUTICS
(2023)
Article
Multidisciplinary Sciences
Ivan Argatov, Nedim Krcic, Vitaly Kocherbitov
Summary: Gravimetric sedimentation is a method used to determine the density of spherical particles, but requires careful selection of experimental parameters when applied to water-swollen starch microparticles. This study introduces a novel approach of deriving a priori estimates for the settling time and distance.
Article
Chemistry, Physical
Jenni Engstedt, Justas Barauskas, Vitaly Kocherbitov
Summary: Mixtures of soybean phosphatidylcholine (SPC) and glycerol dioleate (GDO) form liquid crystalline nanostructures in aqueous environments, which can be utilized in drug delivery applications. A comprehensive understanding of their phase behavior is crucial for controlling their function effectively.
Review
Chemistry, Applied
Xingran Kou, Dongdong Su, Fei Pan, Xiwei Xu, Qingran Meng, Qinfei Ke
Summary: This review provides a systematic discussion of the application of molecular dynamics (MD) simulations in aroma compounds (ACs)/cyclodextrins (CDs) inclusion complexes (ICs). It covers the establishment of the simulation process, parameter selection, model evaluation, and various application cases, summarizing the major achievements and challenges of this method.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Haoyu Yu, Quanbin Zhang, Ammad Ahmad Farooqi, Jing Wang, Yang Yue, Lihua Geng, Ning Wu
Summary: Brown algae are rich in fucoidan, which has been found to have anti-cancer and anti-metastasis effects. Fucoidan inhibits tumor cell growth, proliferation, and metastasis, and also promotes immune responses in the tumor microenvironment.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Liang Dong, Yanan Li, Hailin Cong, Bing Yu, Youqing Shen
Summary: Gene therapy is a revolutionary treatment that requires suitable vectors for protecting and releasing exogenous nucleic acids in target cells. Chitosan, as a non-viral vector, has gained attention due to its good biocompatibility and ability to load large amounts of nucleic acids. This paper summarizes the potential of chitosan and its derivatives as gene delivery vector materials, discusses factors influencing transfection efficiency, performance evaluation, ways to optimize infectious efficiency, and current research development directions. It also provides an outlook on the future prospects of chitosan.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ana Iglesias-Mejuto, Beatriz Magarinos, Tania Ferreira-Goncalves, Ricardo Starbird-Perez, Carmen Alvarez-Lorenzo, Catarina Pinto Reis, Ines Ardao, Carlos A. Garcia-Gonzalez
Summary: This study developed a novel processing strategy to manufacture drug-loaded and personalized aerogels with nanostructures. The aerogels demonstrated bioactivity and antimicrobial effects, promoting bone regeneration and preventing infections in bone tissue engineering.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Zhenxu Shi, Dimei Yang, Yan Zhou, Xinyu Chen, Lin Gan, Jin Huang
Summary: This study proposes a micro-assembly method to improve the photoluminescent properties of crystalline cellulose nanocrystals (CNCs) by organizing them within a sub-micrometer-sized metal-organic framework and coating with TiO2. The TiO2 coating prevents CNC assembly breakdown and allows information to be revealed using screenprinted labels for anti-counterfeiting purposes.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Xuejiao Liu, Bin Fu, Jierong Chen, Zhenyu Sun, Dongdong Zheng, Zhonghua Li, Bing Gu, Ying Zhang, Haojie Lu
Summary: Liver disease is a major cause of global mortality, and identifying biomarkers for diagnosing its progression is crucial for improving outcomes. Targeted mass spectrometry is a powerful tool for verifying biomarker candidates and clinical applications, particularly for glycoproteins translation. However, the limitation of analyzing only one sample per run has become apparent. In this study, a high-throughput intact N-glycopeptides quantification strategy was developed, allowing the validation of 20 samples per run with an average analysis time of 3 minutes per sample. The strategy was applied in a cohort of 461 serum samples and identified a panel of 10 IgG N-glycopeptides that have strong clinical utility in evaluating the severity of liver disease.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Qian Wang, Hao Jiang, Hongli Zhang, Weiqiao Lu, Xiao Wang, Wenfeng Xu, Jia Li, Youjing Lv, Guoyun Li, Chao Cai, Guangli Yu
Summary: This study proposes a novel strategy of antibody-beta-glucan conjugates (AGC) to enhance the antitumor immune response to immune checkpoint blockade (ICB) therapy. AGC demonstrated powerful tumor suppression and promoted interaction between tumor cells and dendritic cells (DCs), thereby enhancing immunotherapeutic benefits.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Chaeyeon Lee, Sojeong Lee, Sang Wook Kang
Summary: The study aims to enhance the properties of porous membranes by addressing the limitations associated with phase separation. By using cellulose acetate and citric acid, the researchers were able to fabricate membranes with improved mechanical strength and thermal stability. The cross-linking effect of citric acid resulted in a more uniform pore structure and higher porosity.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Tejaswini Kolipaka, Giriraj Pandey, Noella Abraham, Dadi A. Srinivasarao, Rajeev Singh Raghuvanshi, P. S. Rajinikanth, Vidya Tickoo, Saurabh Srivastava
Summary: This review focuses on the design and application of polysaccharide-based hydrogel wound dressings, highlighting aspects such as biocompatibility, biodegradability, drug entrapment, moisturizing ability, swelling, and mechanical properties. Additionally, various crosslinking methods and recent developments in stimuli-responsive hydrogels are discussed.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Anqi Xu, Nan Zhang, Shixing Su, Hongyu Shi, Daoqiang Lu, Xifeng Li, Xin Zhang, Xin Feng, Zhuohua Wen, Gengwu Ma, Mengshi Huang, Chi Huang, Yuqi Hu, Hao Yuan, Qinwen Liu, Daogang Guan, Jun Wang, Chuanzhi Duan
Summary: The study presents a one-pot radical polymerization method to fabricate a hydrogel with adhesive properties, which can effectively treat bacterial-infected diabetic wounds and accelerate wound healing.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Montarop Yamabhai, Munthipha Khamphio, Thae Thae Min, Chai Noy Soem, Nguyen Cao Cuong, Waheni Rizki Aprilia, Krisanai Luesukprasert, Karsidete Teeranitayatarn, Atthaphon Maneedaeng, Tina R. Tuveng, Silje B. Lorentzen, Simen Antonsen, Paiboon Jitprasertwong, Vincent G. H. Eijsink
Summary: The study investigates the bioconversion of chitosan into soluble anti-inflammatory chitosan oligosaccharides (CHOS) using an enzyme. The results show that the generated CHOS have anti-inflammatory activity, but the magnitude of the activity depends on the substrate and production process. Different methods of dissolving chitosan also affect the properties of CHOS. The study highlights the importance of quality assurance in CHOS preparations.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Wen Cao, Jiangping Wu, Xinya Zhao, Zixu Li, Jie Yu, Taili Shao, Xuefeng Hou, Lutan Zhou, Chunfei Wang, Guodong Wang, Jun Han
Summary: In this study, a water-soluble polysaccharide (PLP1) was successfully isolated and purified from Pueraria lobata. It was found that PLP1 was composed of specific glycosidic units and exhibited a better free radical-scavenging ability. Moreover, PLP1 effectively protected the liver against acute alcoholic liver disease (ALD) in mice.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ya Su, Yaqian Liu, Xueyan Hu, Yueqi Lu, Jinyuan Zhang, Wenbo Jin, Wang Liu, Yan Shu, Yuen Yee Cheng, Wenfang Li, Yi Nie, Bo Pan, Kedong Song
Summary: A 3D printed scaffold based on carbon dots-curcumin nano-drug release has been developed for drug delivery after breast cancer surgery. The scaffold showed effective inhibition of tumor growth, antibacterial activity, and promotion of wound healing, making it a promising approach for preventing tumor recurrence.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ekaterina Sokolova, Diane Jouanneau, Antonin Chevenier, Murielle Jam, Nathalie Desban, Pierre Colas, Elizabeth Ficko-Blean, Gurvan Michel
Summary: Carrageenans, a compound synthesized in red algae, have various biological properties and are valuable in the pharmaceutical and cosmetic industries. Their fine structure affects wound healing, oxidative processes, hemostasis, and inflammation. Enzymatic modification of carrageenans produces oligosaccharides that bind to natural human serum antibodies and specific antibodies, showing potential for therapeutic applications.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Yan Shi, Miao Yu, Kaijin Qiu, Tiantian Kong, Chunjing Guo, Wenxue Zhang, Daquan Chen, Ming Kong
Summary: In this study, functionalized transfersomes were developed to co-deliver doxorubicin and 1MT towards primary tumors and tumor draining lymph nodes via transdermal administration using microneedles. The results showed that the nano-complexed microneedles exhibited a stronger suppression in tumor growth compared to the intravenous group.
CARBOHYDRATE POLYMERS
(2024)
