Article
Engineering, Biomedical
Hugues Mondesert, Frederic Bossard, Denis Favier
Summary: This study investigates anisotropic fibrous scaffolds fabricated by template-assisted electrospinning, showing significant differences in mechanical properties along two orthogonal directions with an anisotropic ratio of 4.2. Through tensile test experiments and stress relaxation test, the study reveals the low contribution of viscosity in the mechanical response of the scaffold. An orthotropic linear elastic model is proposed to characterize the anisotropic behavior of the patterned membranes, offering potential benefits for soft regenerative medicine applications and custom-made scaffolds.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Chemistry, Physical
Ewa Stodolak-Zych, Roksana Kurpanik, Ewa Dzierzkowska, Marcin Gajek, Lukasz Zych, Karol Gryn, Alicja Rapacz-Kmita
Summary: Electrospinning was utilized to fabricate composite fibrous membranes containing montmorillonite and a modifier, leading to increased fiber diameter, improved antibacterial activity, and enhanced mechanical properties compared to neat polymer materials. The addition of the modifier resulted in enhanced wetting properties and mechanical strength of the composite materials.
Article
Chemistry, Physical
Ioana-Codruta Mirica, Gabriel Furtos, Ondine Lucaciu, Petru Pascuta, Mihaela Vlassa, Marioara Moldovan, Radu-Septimiu Campian
Summary: This research developed new electrospun membranes (EMs) based on PCL with nHAP and MET. Structural characterization was done using XRD and FTIR-ATR, showing different mechanical properties and structural features for membranes with different compositions. The new EMs with nHAP and MET could be promising materials for guided bone regeneration or tissue engineering.
Article
Polymer Science
Fatemeh Maghfoori, Najmeh Najmoddin, Mohamad Pezeshki-Modaress
Summary: This study developed PCL nanofiber scaffolds by in-situ synthesis of well-distributed ZnO nanorods decorated on clay platelets. Increasing the content of ZnO nanorods significantly improved the mechanical properties of the scaffold, and the well-covered ZnO nanorods enhanced its antibacterial performance. This engineered nanocomposite shows great potential for biomedical applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Engineering, Multidisciplinary
Donya Razzaghi, Mostafa Rezaei, Amin Babaie
Summary: The study shows that the PU-GPCL electrospun nanofiber mat containing 1% of GPCL nanosheets could be selected as a potential candidate for wound dressing application, as it exhibits good mechanical properties and cell biocompatibility.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Iman Shirzaei Sani, Mostafa Rezaei, Ali Baradar Khoshfetrat, Donya Razzaghi
Summary: Chitosan and poly (epsilon-caprolactone) were combined to fabricate bone tissue engineering scaffolds with enhanced bioactivity and mechanical properties. The incorporation of chitosan-g-poly (epsilon-caprolactone) significantly decreased fiber diameter and hydroxyapatite nanoparticles enhanced mineralization and degradation of the scaffold. In vitro cytocompatibility assays showed high cell viability and proliferation, indicating the potential use of the microfabricated nanocomposite scaffolds in bone tissue engineering.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Soumya Columbus, Diksha Painuly, Renjith P. Nair, V. Kalliyana Krishnan
Summary: The conjugation of PEGylated CdSe-ZnS quantum dots into electrospun PCL scaffolds resulted in composite scaffolds with smaller fiber diameter and pore size range compared to bare scaffolds. Both PCL and composite scaffolds exhibited better mechanical strength and elasticity than native arteries. The hydrophobic nature of the scaffolds was significantly improved upon modification with fibrin, and the PCL/Q-dot composite scaffolds showed optimal microstructure for supporting uniform endothelial cell growth after 5 days of culture.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Engineering, Biomedical
Jiafeng Wang, Longhui Shao, Xiaoyu Wu, Chun Liu, Su Ni, Ting Dai, Hongwei Liu, Hongbin Zhao
Summary: Osteoblasts and osteoclasts play a crucial role in bone regeneration and remodeling. Incorporating naringenin and vitamin K2 stimulates osteogenesis-related genes and proteins while inhibiting the formation and growth of osteoclasts.
MATERIALS TODAY BIO
(2023)
Article
Engineering, Biomedical
Andjela Radisavljevic, Dusica B. Stojanovic, Milos Petrovic, Vesna Radojevic, Petar Uskokovic, Mirjana Rajilic-Stojanovic
Summary: In this study, polycaprolactone (PCL) was functionalized with yarrow extract and fabricated into nanofiber mats. The released polyphenols from the nanofibers showed good antioxidant activity and antibacterial effect against Staphylococcus aureus. The PCL/yarrow nanofiber mats also exhibited improved mechanical properties compared to neat PCL nanofibers.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2023)
Article
Materials Science, Multidisciplinary
Huy Nguyen, Nghi Nguyen, Nam Tran, Thien Nguyen, Quang Nguyen, Thang Phan, Hanh Ta, Toi Vo, Thi-Hiep Nguyen
Summary: This study demonstrates that the addition of virgin coconut oil to an electrospun PU/PCL membrane effectively improves antithrombogenicity and promotes anti-coagulation as well as cell adhesion.
Article
Chemistry, Physical
Constantinos Voniatis, Dora Barczikai, Gergo Gyulai, Angela Jedlovszky-Hajdu
Summary: This manuscript presents the first attempt to fabricate and characterise electrospun polycaprolactone/poly(succinimide) composite meshes, which show great potential for diverse applications. Three different meshes were produced using different electrospinning configurations, and physical-chemical and mechanical characterisation confirmed the advantages of the composite meshes in terms of mechanical strength and wettability.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Thermodynamics
Raffaele Longo, Michelina Catauro, Andrea Sorrentino, Liberata Guadagno
Summary: This study describes a electrospun membrane material composed of a blend of polycaprolactone (PCL) and gelatin (GN), which possesses biocompatibility and biodegradability, and meets the requirements of biological, mechanical, and thermal performance for stretchable and flexible materials interfacing with the human body.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Biomedical
Yuliet Montoya, Jose Cardenas, John Bustamante, Raul Valencia
Summary: The study found that co-electrospun samples had better alignment and larger fiber diameters and pore area than sequential samples. Sequential scaffolds had higher static permeability while co-electrospun samples showed higher hydrophilicity. Gelatin mass losses were less in co-electrospun samples, promoting cellular functions.
BIOMATERIALS RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Xingang Wang, Li Xiang, Yongxuan Peng, Zihao Dai, Yuqing Hu, Xiaoting Pan, Xingliang Zhou, Hao Zhang, Bei Feng
Summary: This study demonstrated that nanofibrous membranes with a GT:PCL mass ratio of 50:50 exhibited excellent mechanical properties, good biocompatibility, and effective anti-cell penetration ability, serving as a physical barrier to prevent postoperative cardiac adhesion.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Biomedical
Jiafeng Wang, Longhui Shao, Xiaoyu Wu, Chun Liu, Su Ni, Ting Dai, Hongwei Liu, Hongbin Zhao
Summary: The incorporation of naringenin and vitamin K2 into biomaterial membranes stimulates osteoblast growth and inhibits osteoclast formation and growth. This finding is significant for bone growth and the treatment of bone defects.
MATERIALS TODAY BIO
(2023)
Article
Crystallography
I. J. Gonzalez-Panzo, C. Tabasco-Novelo, E. Rosendo, A. Oliva, R. Romano-Trujillo, R. Galeazzi, C. Morales, G. Garcia, A. Coyopol
Summary: ZnSe nanoparticles were synthesized in aqueous colloidal solution at different pH levels and temperature. Physicochemical analysis was conducted to study the formation and growth process of ZnSe-NPs. Characterization of the ZnSe-NPs was performed using XRD, Raman spectroscopy, SEM, and EDS techniques, revealing mixed cubic and hexagonal structures with nanoscale crystal sizes.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Physics, Applied
E. Figueroa-Gonzalez, R. Mendoza, A. Oliva, C. Gomez-Solis, L. S. Valle-Garcia, E. Oliva, V Rodriguez-Gonzalez, A. Encinas, J. Oliva
Summary: We report on the fabrication and electrochemical characterization of biodegradable and flexible supercapacitors. These supercapacitors use graphene nanoplates coated coconut fibers as conductive electrodes, an oral electrolyte solution and rice paper as electrolyte and separator. By adding MgTiO3 nanoparticles to the anode, the capacitance and specific energy of the supercapacitors were enhanced. The biodegradable cells exhibited long discharge times and stable output voltage, which have not been observed previously for such supercapacitors.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Composites
Ivan Perez, Samuel Flores, Cesar Ortiz, Miguel Rivero, Jose Emilio Corona, Andres Ivan Oliva, Francis Aviles
Summary: The dispersion state of multilayer graphene sheets in polymers significantly affects the properties of nanocomposites. By adjusting roller gaps and processing cycles, smaller and more densely packed agglomerates can be achieved, impacting the electrical conductivity and mechanical properties of the nanocomposites. The density of agglomerates plays a key role in governing the piezoresistive sensitivity.
POLYMER COMPOSITES
(2022)
Article
Energy & Fuels
R. Mendoza, J. Oliva, K. P. Padmasree, A. Oliva, A. Mtz-Enriquez, A. Zakhidov
Summary: The study demonstrated that incorporating CaCo oxide into solid state supercapacitors made from surgical face mask waste and blister packs recycled from paracetamol packaging can significantly improve energy density and capacitance. The devices showed high capacitance retention even under pressure conditions, with minimal decrease in capacitance. Analysis also revealed the presence of additional redox species and oxygen vacancies, indicating the ability of the devices to store charge efficiently through redox reactions.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
A. Molina, A. Oliva, A. Zakhidov, E. Valadez-Renteria, V Rodriguez-Gonzalez, A. Encinas, J. Oliva
Summary: This work presents the fabrication of flexible and biodegradable sensors for NO2 detection. The sensors show active sites on their surface for gas detection and exhibit advantages of low power consumption and recoverability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Luis Alfonso Can-Herrera, Andres Ivan Oliva, Jose Manuel Cervantes-Uc
Summary: Polycaprolactone (PCL) and poly(lactic acid) (PLA) are two polymers with unique properties, and their blending can produce a new biodegradable material with balanced properties. However, both PCL and PLA are highly hydrophobic materials. The surface characteristics of electrospun PCL/PLA blends can be improved by air plasma treatment and adjusting the content of its components.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Energy & Fuels
E. Figueroa-Gonzalez, A. Oliva, V Rodriguez-Gonzalez, C. Gomez-Solis, C. R. Garcia, J. Oliva
Summary: Recycling materials containing plastics is important for environmental protection, as they can contribute to microplastic contamination in oceans and rivers. By using recycled tetrapak/graphene and Ag/BaMoO4 nanoparticles, the researchers fabricated supercapacitors with improved capacitance, energy density, and stability. This study demonstrates that utilizing recycled materials like tetrapak can reduce costs and plastic pollution in the environment.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Applied
Erik Uc-Fernandez, Jorge Gonzalez-Sanchez, Alejandro Avila-Ortega, Yamile Perez-Padilla, J. Manuel Cervantes-Uc, Javier Reyes-Trujeque, William A. Talavera-Pech
Summary: In this study, the anticorrosive properties of MCM-41-HDTMS functionalized silica particles incorporated into MTES sol-gel coatings were investigated. The addition of MCM-41-HDTMS increased the contact angle and improved the protection of metals.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2023)
Article
Polymer Science
Jorge C. Canto-Pinto, Eduardo Reyes-Perez, Emilio Perez-Pacheco, Carlos R. Rios-Soberanis, Yasser A. Chim-Chi, Jose D. Lira-Maas, Raciel J. Estrada-Leon, Mario A. A. Dzul-Cervantes, Jose H. Mina-Hernandez
Summary: This study characterized the physicochemical properties of colok starch and found that it can be used in food products that require high processing temperatures.
Article
Polymer Science
Juan Encalada-Alayola, Jorge A. Uribe-Calderon, Wilberth A. Herrera-Kao, Santiago Duarte-Aranda, Gerardo M. Alonzo-Medina, Ruben Dominguez-Maldonado, Jose Manuel Cervantes-Uc
Summary: The aim of this study was to investigate the potential of low-generation PAMAM dendrimers as drug nanocarriers for 5-FU and determine the most efficient generation type. PAMAM dendrimers (up to 2.0 generation) were synthesized and characterized, followed by successful incorporation of 5-FU. In vitro release studies showed that full-generation dendrimers exhibited the highest drug load capacity and slowest release rate, and the drug release kinetics were best described by the Korsmeyer-Peppas model. These results confirm the suitability of low-generation dendrimers as polymeric nanocarriers for drug delivery applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Hugo Espinosa-Andrews, Celso Velasquez-Ordonez, Jose Manuel Cervantes-Uc, Rogelio Rodriguez-Rodriguez
Summary: In this study, chitosan hydrogels were prepared using different concentrations and molecular weights of chitosan. The physicochemical properties of the hydrogels were evaluated, including thermal stability, chemical structure, microstructure, water state, water sorption, and viscoelastic properties. The chitosan hydrogels showed high hydrophilicity, solid-viscoelastic behavior, and porous, interconnected structures, making them suitable for biomedical applications as polymer scaffolds.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Polymer Science
Gabriela Fletes-Vargas, Hugo Espinosa-Andrews, Jose Manuel Cervantes-Uc, Isaias Limon-Rocha, Gabriel Luna-Barcenas, Milton Vazquez-Lepe, Norma Morales-Hernandez, Jorge Armando Jimenez-Avalos, Dante Guillermo Mejia-Torres, Paris Ramos-Martinez, Rogelio Rodriguez-Rodriguez
Summary: Chitosan hydrogels were prepared by freeze-drying at different concentrations and molecular weights, and sodium bicarbonate was used as a crosslinking agent for physical crosslinking of chitosan sponges. XPS analysis confirmed the physical crosslinking of chitosan hydrogels using sodium bicarbonate. The chitosan hydrogels exhibited semi-crystalline nature, highly porous structure, high water absorption, and thermal stability, as well as non-cytotoxicity towards HT29 cells. Therefore, physically crosslinked chitosan hydrogels show great potential as biomaterials for biomedical applications.