Article
Biochemistry & Molecular Biology
Giulia Guidotti, Michelina Soccio, Edoardo Bondi, Tamara Posati, Giovanna Sotgiu, Roberto Zamboni, Armida Torreggiani, Franco Corticelli, Nadia Lotti, Annalisa Aluigi
Summary: Proteins, particularly keratin, have emerged as promising biomolecules for wound healing and drug delivery systems. The study demonstrates the potential of keratin/poly(butylene succinate) blend nanofibers in drug release applications, showing enhanced drug release rates with increased keratin content.
Article
Polymer Science
Carlos Perez-Valdez, Guillermina Burillo, Rodrigo Navarro, Angel Marcos-Fernandez
Summary: PBS and PBSA were irradiated with gamma radiation up to a dose of 400 kGy, resulting in the formation of gel content. PBSA exhibited higher gel content compared to PBS. Analysis revealed that chain scission predominated over crosslinking. Branching and chain scission increased the dispersity and affected the molecular weight. NMR analysis showed the appearance of new species and changes in species with increasing dose. The thermal properties, especially crystallization temperature, were significantly affected by irradiation. Mechanical properties of both polymers were greatly reduced, making them fragile even at low doses.
Article
Polymer Science
Maryam Safari, Ricardo A. Perez Camargo, Laura Ballester-Bayarri, Guoming Liu, Agurtzane Mugica, Manuela Zubitur, Dujin Wang, Alejandro J. Mueller
Summary: This study explores the possibility of blending PBS and PCL with BSxCLy copolymers and systematically studies the crystallization behavior of the blends. The results show that the PBS/BS78CL22 blend exhibits good miscibility at high PBS content, while the PCL/BS15CL85 blend still displays partial miscibility at high PCL content. The BS46CL54 copolymer can crystallize in both PBS and PCL type crystals, depending on the polymeric matrix.
Article
Biotechnology & Applied Microbiology
Phong Thanh Vo, Huu The Nguyen, Hai Thi Trinh, Viet Minh Nguyen, Anh-Tuan Le, Huy Quang Tran, Thuy Thi Thu Nguyen
Summary: This study presents a new fertilizer formulation based on urea, chitosan, and poly (vinyl alcohol) for slow release of urea, with improved hydrolytic stability and sustained release effects. The interaction between urea and functional groups of chitosan and PVA significantly affects the thermal properties of the formulation. The formulation shows potential as a slow-release fertilizer to reduce adverse environmental and economic impacts in agriculture.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Polymer Science
Yi Li, Guoyong Huang, Cong Chen, Xue-Wei Wei, Xi Dong, Wei Zhao, Hai-Mu Ye
Summary: By incorporating AD units into PBS chains, the crystallization temperature and crystallinity of PBS can be depressed, while the primary nucleation capability is significantly strengthened without altering crystal modification or crystallization kinetics. The presence of specific interactions among AD units is crucial for the performance of PBSAD, and further investigation may lead to the design of superior PBS copolymers in the future.
Article
Materials Science, Composites
Teboho Clement Mokhena, Emmanuel Rotimi Sadiku, Suprakas Sinha Ray, Mokgaotsa Jonas Mochane, Tshwafo Elias Motaung
Summary: This study investigated the effect of clay nanoparticles on the flame retardancy, thermal stability, thermal degradation kinetics, and rheological properties of PBS/EG composites. The presence of clay improved the dispersion of EG and enhanced rheological properties, but decreased overall thermal stability due to a catalytic effect. The presence of EG impeded the clay's catalytic effect on PBS degradation, and the flame retardancy improved with the addition of clay due to the formation of a barrier layer.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Nalini Sharma, Ajay Singh, Raj Kumar Dutta
Summary: A new biodegradable phosphate formulation PDK was developed in this study, showing good swelling and release performance through the use of PVA, kaolin clay, and DAhP. Under optimal conditions, PDK hydrogel demonstrated the best release and swelling results.
Review
Polymer Science
Massimiliano Barletta, Clizia Aversa, Muhammad Ayyoob, Annamaria Gisario, Kotiba Hamad, Mehrshad Mehrpouya, Henri Vahabi
Summary: The development of biodegradable and compostable materials, such as polybutylene succinate (PBS), as alternatives to fossil-based plastics is highly important. PBS is a compostable aliphatic polyester with good mechanical strength and thermal resistance. However, it is often blended with other polymers, fillers, and additives to improve processability and mechanical performance. Recent advances in polymer blending processes have made PBS blends an interesting material platform for applications requiring a balance of mechanical strength, flexibility, thermal resistance, and compostability.
PROGRESS IN POLYMER SCIENCE
(2022)
Review
Green & Sustainable Science & Technology
Hongfu Zhou, Dongdong Hu, Min Zhu, Kun Xue, Xinyi Wei, Chul B. Park, Xiangdong Wang, Ling Zhao
Summary: This review provides an overview of the issues, modification methods, properties, applications, and challenges in the foaming process of biodegradable polymer PBS.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Polymer Science
Christina. I. Gkountela, Dimitrios Markoulakis, Marilena Mathioudaki, Ioanna Pitterou, Anastasia Detsi, Stamatina N. Vouyiouka
Summary: Poly(butylene succinate) (PBS), a bio-based and biodegradable polymer, was synthesized using immobilized Candida antarctica Lipase B as a biocatalyst in a solvent-free process. The process parameters were optimized to obtain PBS with desired molecular weight and thermal properties. The post-polymerized PBS was used as a carrier for the natural antioxidant flavonoid naringin, demonstrating its potential as an effective encapsulation system.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Moein Zarei, Miroslawa El Fray
Summary: Polymeric materials have a wide range of applications due to their controllable properties. In this study, a series of PBS-DLS-PEG copolymers were synthesized with different molecular weights of PEG to investigate their surface and thermal properties. The incorporation of higher molecular weight PEG improved the surface wettability of the materials while maintaining their thermal properties.
Article
Polymer Science
Yaqing Shang, Zhiguo Jiang, Zhaobin Qiu
Summary: Novel biobased and biodegradable PBS-b-PBSe multiblock copolymers were successfully synthesized with high thermal stability. The two blocks crystallized separately in both amorphous and crystalline phases. The mechanical properties of the copolymers were significantly improved compared to homopolymers.
Article
Pharmacology & Pharmacy
Eduardo Galdon, Monica Millan-Jimenez, Gloria Mora-Castano, Antxon Martinez de Ilarduya, Isidoro Caraballo
Summary: A biodegradable copolyester, poly(butylene succinate-co-epsilon-caprolactone) (PBS_CL), was successfully utilized as an excipient for pharmaceutical dosage forms using hot processing techniques such as ultrasound-assisted compression (USAC) and hot melt extrusion (HME). Controlled release of the drug was achieved with varying amounts of PBS_CL, with a percolation threshold around 23% v/v estimated.
Review
Polymer Science
S. Ayu Rafiqah, Abdan Khalina, Ahmad Saffian Harmaen, Intan Amin Tawakkal, Khairul Zaman, M. Asim, M. N. Nurrazi, Ching Hao Lee
Summary: Research shows that PBS-based natural fiber composites have good biodegradability and strong physical properties, offering great potential in replacing petroleum-based materials. Current research efforts focus on the synthesis, copolymers, and degradability of PBS, providing new insights and approaches for the development in this field.
Article
Polymer Science
Patharawadee Boonying, Sirinya Sottiudom, Pohnpawee Nontasorn, Kritapas Laohhasurayotin, Wiyong Kangwansupamonkon
Summary: Alkyd coatings incorporated with different types of micronutrients were successfully prepared and coated on granular urea. The water solubility of micronutrients plays an important role in controlling the release rate of macro- and micronutrients. These coating films can reduce the environmental implications imposed by excessive use of fertilizers.
Article
Biotechnology & Applied Microbiology
Priscilla B. A. Bedor, Pedro Rondelli, Sergio Thode Filho, Fernando G. de Souza Jr, Selma G. F. Leite
Summary: This study focused on the production of poly(butylene succinate) microspheres containing urea for the biostimulation of native microbiota in contaminated sites. The results showed efficient controlled release of urea and promoted microbial growth, while also revealing the ecotoxicity of the urea-containing microspheres on A. salina.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Review
Chemistry, Applied
Luis Pena Icart, Fernando Gomes Souza Jr, Luis Mauricio T. R. Lima
Summary: Type 2 diabetes is a fast-growing worldwide epidemic, but over half of patients do not manage the disease correctly due to non-compliance with treatment regimes. The development of analogues to GLP-1 and the use of controlled-release systems have brought new hopes for treating type 2 diabetes.
JOURNAL OF MICROENCAPSULATION
(2021)
Article
Pharmacology & Pharmacy
Nathali Ricardo Barbosa de Lima, Fernando Gomes Souza Junior, Valerie Gaelle Roullin, Kaushik Pal
Summary: Gold nanoparticles (AuNPs) are extensively studied for targeted drug delivery, with a newly developed material in this study showing successful surface modification, potentially opening up new possibilities for cancer treatment.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Nidhi Asthana, Kaushik Pal, Alaa A. . A. . Aljabali, Murtaza M. Tambuwala, Fernando Gomes de Souza, Kamlesh Pandey
Summary: Aloe vera is a versatile plant known for its healing properties on the skin. A blend gel of Aloe vera, clay, and poly vinyl alcohol has unique applicability and thin-film forming performance.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Emiliane Daher Pereira, Sabu Thomas, Fernando Gomes de Souza Junior, Jessica da Silva Cardoso, Sergio Thode Filho, Vitor Correa da Costa, Fabiola da Silveira Maranhao, Nathali Ricardo Barbosa de Lima, Fernanda Veloso de Carvalho, Mostafa Galal Aboelkheir
Summary: The controlled drug delivery system, prepared by inserting ibuprofen and magnetite nanoparticles into the PLA matrix, combines the advantages of kinetic control (polymer) and spatial control (magnetite) to improve patient compliance and comfort, making the treatment more efficient. Various tests were conducted to verify the capacity of the system, showing sustained drug release profile and unchanged magnetic force of the nanoparticles in the PLA/drug systems.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Review
Materials Science, Multidisciplinary
Kaushik Pal, Nidhi Asthana, Alaa A. Aljabali, Sheetal K. Bhardwaj, Samo Kralj, Anastasia Penkova, Sabu Thomas, Tean Zaheer, Fernando Gomes de Souza
Summary: The article discusses the significance of "nanographene" as a new material in the fields of Chemical Biology and Materials Chemistry, highlighting its high surface area, excellent charge carrier mobility, and essential photocatalytic properties. By employing a melt mixing/compounding fabrication strategy, nanographene can be utilized in pharmaceuticals, nano-imaging, and other areas, showcasing substantial advancements and potential breakthroughs.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2022)
Proceedings Paper
Polymer Science
Fernando Gomes Souza Jr, Claudia Duarte Cunha, Emiliane Daher Pereira, Diogo Simas Bernardes Dias, Kaushik Pal, Michelle Colao Pereira, Rebecca Alves Silva
Summary: This study developed a Python code for composition analysis of biopolymers using FTIR spectra, comparing signals and calculating errors to determine the final composition of the material.
MACROMOLECULAR SYMPOSIA
(2021)
Proceedings Paper
Polymer Science
Vitor Correa da Costa, Edson Rodrigo Fernandes dos Santos, Fernando Gomes de Souza Jr
Summary: The paper discusses the determination of molar mass of polymers, highlighting limitations of current techniques and proposing the use of NMR with an external standard to improve accuracy of results.
MACROMOLECULAR SYMPOSIA
(2021)
Proceedings Paper
Polymer Science
Vitor Correa da Costa, Fernando Gomes de Souza, Luana de Castro Sousa, Romildo Dias Toledo Filho
Summary: By utilizing polymers to enhance self-healing mechanisms, three different materials have been synthesized to act as self-healing systems.
MACROMOLECULAR SYMPOSIA
(2021)
Proceedings Paper
Polymer Science
Alessandro Barros, Maisa Pabis, Fernando Gomes, Jose Carlos Pinto, Marcio Nele
Summary: Encapsulated acids can enhance the rate of penetration during drilling operations while preventing corrosion of metallic equipment parts. Paraffin encapsulation is widely used in various industries such as food processing, chemicals, cosmetics, and oil. The efficiency of encapsulation is influenced by the ratio of wax to acid solution and the concentration of acid.
MACROMOLECULAR SYMPOSIA
(2021)
Proceedings Paper
Polymer Science
Fabiola Silveira Maranhao, Fernando Gomes de Souza Junior, Sergio Thode Filho, Bryan Henrique de Oliveira Athayde, Felipe Ferreira de Carvalho, Adam Lino, Olaf Malm
Summary: Sorption of heavy metals is an important method for controlling environmental pollution, especially in the context of bioaccumulation. A new technology utilizing a magnetic nanocomposite for heavy metal removal through sorption has been proposed in this paper, showing a 99% sorption capacity for effluents contaminated with heavy metals, with promising results in chromium and lead absorption tests.
MACROMOLECULAR SYMPOSIA
(2021)
Review
Pharmacology & Pharmacy
Nathali R. B. de Lima, Fernando G. de Souza Junior, Valerie G. Roullin, Kaushik Pal, Nathalia D. da Silva
Summary: This study provides a literature review of treatments for HNSCC and highlights recent techniques proven effective in other types of cancer. The analysis shows that there is still room for expanding research, especially in alternative therapies, to improve treatment efficacy.
CURRENT RADIOPHARMACEUTICALS
(2022)
Article
Chemistry, Physical
Mostafa Aboelkheir, Fernando Gomes, Cintia Meiorin, Tiago Galdino
Summary: Renewable resources, such as molecules and polymers produced by natural biological activities, offer a wide range of applications including environmental remediation and medical applications. This study proposed the use of magnetic polyurea composites based on an animal substrate from Tenebrio molitor larvae for oil spill clean-up operations under a magnetic field. The materials were characterized using various techniques and showed promising results, with the ability to remove about 28 grams of oil per gram of sorber material.
Article
Chemistry, Physical
Fernando Gomes Souza Jr, Kaushik Pal, Jeffrey Dankwa Ampah, Maria Clara Dantas, Aruzza Araujo, Fabiola Maranhao, Priscila Domingues
Summary: Using renewable resources to produce biofuels is a significant theme in modernity, attracting the attention of many countries and being an essential part of the global geopolitical chessboard due to increasing energy needs. The advancement of personal computing and open-source software production has facilitated the exploration and understanding of complex scenarios. Through the analysis of 1071 scientific articles in the Scopus database, researchers discovered that the most recent associations focus on producing biofuels from microorganisms' oils and using cerium oxide nanoparticles to enhance fuel mixtures' performance by reducing hydrocarbon and nitrogen oxide emissions.
Article
Construction & Building Technology
Fabiola da Silveira Maranhao, Fernando Gomes de Souza Junior, Priscila Soares, Haluk Gorkem Alcan, Oguzhan Celebi, Baris Bayrak, Gokhan Kaplan, Abdulkadir Cueneyt Aydin
Summary: This study investigated the properties of composites produced from waste geopolymer powder. The compressive strength of the mixtures ranged from 9.7 to 26.6 MPa after heat curing, and from 10.7 to 35.5 MPa after water curing for 28 days. The amount of quartz powder was found to be the most critical factor for improving the mechanical properties.
JOURNAL OF BUILDING ENGINEERING
(2023)
