Article
Biochemistry & Molecular Biology
Juliana Domingues dos Santos Carvalho, Renata Santos Rabelo, Miriam Dupas Hubinger
Summary: The study investigated the thermal and rheological properties of methylcellulose and hydroxypropyl methylcellulose hydrogels with the addition of chitosan. The results indicated that the addition of chitosan allowed these polymers to form gels at lower temperatures, which could benefit the processing of oil carrier systems under milder thermal conditions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Applied
Mateusz Gosecki, Harri Setala, Tommi Virtanen, Anthony J. Ryan
Summary: A facile chemical method is reported to convert the hydroxyl groups of HPC into carbamates using N-methyl carbamoylimidazole. The synthesized HPC methylcarbamates showed a range of LCST values depending on the degree of substitution. The effect of methylcarbamate on LCST is greater when the initial hydroxypropyl content of HPC is lower.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Evdokia Vassiliadi, Marta Tsirigotis-Maniecka, Henry E. Symons, Pierangelo Gobbo, Frederic Nallet, Aristotelis Xenakis, Maria Zoumpanioti
Summary: The present work reports on the structural study of a film made of a hybrid blend of biopolymers used as an enzyme carrier. The study revealed the presence of intermolecular hydrogen bonds in the film and showed that the mechanical properties of the matrix were not affected by the presence of the enzyme. However, after multiple reaction cycles, the film showed signs of fatigue and loss of humidity, resulting in a decrease in enzyme activity.
Article
Materials Science, Paper & Wood
Muhammad Asif Iqbal, Toheed Akhter, Muhammad Faheem, Asif Mahmood, Waheed Al-Masry, Sohail Nadeem, Sadaf Ul Hassan, Chan Ho Park
Summary: We synthesized a thermoresponsive polymer with a narrow molecular weight distribution using organic photo-redox-catalyzed atom transfer radical polymerization (O-ATRP). The O-ATRP was mediated by a photoredox catalyst 1,2,3,5-tetrakis (carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) under visible light irradiation. The polymerization of polymethyl methacrylate (PMMA) chains from a hydroxypropyl cellulose (HPC)-based macroinitiator was characterized using various analytical methods. The resulting PMMA-grafted HPC (PMMA-g-HPC) showed a widened lower critical solution temperature (LCST) window and an inverse pH dependency of the LCST, making it promising for various applications including drug delivery systems.
Article
Chemistry, Applied
Alexia Tialiou, Zahraa H. Athab, Robert T. Woodward, Veronika Biegler, Bernhard K. Keppler, Ahmed F. Halbus, Michael R. Reithofer, Jia Min Chin
Summary: A novel hydroxypropyl cellulose (gHPC) hydrogel with graded porosity was successfully synthesized by cross-linking different parts of the hydrogel at different temperatures. The pore size in the hydrogel decreased from top to bottom. The hydrogel also showed graded mechanical properties, with the top layer being able to withstand 50% compression before fracture, while the middle and bottom layers could withstand 80% compression.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Applied
Mohammad Hossein Naeli, Jafar M. Milani, Jamshid Farmani, Azizollaah Zargaraan
Summary: This study aimed to develop and optimize low saturated oleogel shortenings using ethylcellulose or ethylcellulose/hydroxypropyl methylcellulose biopolymers as oleogelators, sunflower oil as the base oil, and palm stearin as the source of saturated fatty acids. Oleogel shortenings had significantly lower saturation levels compared to commercial shortening samples, with similar melting point, firmness, and rheological properties. However, they had lower solid fat content and oxidation induction period. Oleogel made using ethylcellulose/hydroxypropyl methylcellulose biopolymers had even lower saturation level, solid fat content, oxidation induction period, and firmness but a higher melting point compared to that made using ethylcellulose.
Article
Chemistry, Applied
Nadege Leray, Malika Talantikite, Ana Villares, Bernard Cathala
Summary: This study focuses on the preparation and characterization of double network hydrogels based on cellulose nanocrystals. The hydrogels exhibited excellent mechanical properties and tunable swelling capacities which make them suitable for applications in bilayer actuators.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Applied
Yang Zhou, Zhenghao Zhai, Yimin Yao, John C. Stant, Sarah L. Landrum, Michael J. Bortner, Charles E. Frazier, Kevin J. Edgar
Summary: Polysaccharide-based Schiff base hydrogels prepared by reacting oxidized hydroxypropyl cellulose (Ox-HPC) with carboxymethyl chitosan (CMCS) exhibit pH-responsive, injectable, and self-healing properties. The reversible nature of the imine bonds allows for an injectable and self-healing hydrogel. The incorporation of the model amine-containing drug phenylalanine within the hydrogel showed pH sensitivity, releasing faster in the extracellular space around tumors (pH 6.8) compared to normal tissues (pH 7.4).
CARBOHYDRATE POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Shumin Wang, Yingxuan Xie, Huanhuan Su, Yanran Luo, Mengting Wang, Teng Li, Yuying Fu
Summary: Curcumin solid dispersions (Cur SDs) were prepared using hydroxypropyl methyl cellulose (HPMC) and sodium carboxymethyl cellulose (CMC) at different dosages. The addition of CMC enhanced the characteristic peak shift of curcumin, reduced contact angle, increased surface free energy, and improved the solubility of Cur SDs. The morphology of Cur SDs changed from needle-like to sheet-like with the addition of CMC. The addition of CMC significantly improved the anti-proliferation effect of Cur SDs, enhancing the bioavailability of curcumin.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Agricultural Engineering
Xiran Qiao, Kuanjun Fang, Xiuming Liu, Jixian Gong, Shuai Zhang, Jinkun Wang, Min Zhang, Fuyun Sun
Summary: In this study, hydroxypropyl methyl cellulose (HPMC) was used to create a continuous film on the surface of cotton/polyamide interwoven fabric, addressing the challenges posed by acid-base conditions, high temperature, and high humidity in inkjet printing on multi-component fabrics. HPMC connected the fibers in the yarn, preventing ink penetration, and maintained high viscosity under acidic conditions, allowing for dyeing of polyamide fibers with reactive dyes. Compared to sodium alginate, HPMC significantly improved the color depth of cyan, magenta, yellow, and black on cotton/polyamide fabrics.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Muhammad Shahid Latif, Abul Kalam Azad, Asif Nawaz, Sheikh Abdur Rashid, Md. Habibur Rahman, Suliman Y. Al Omar, Simona G. Bungau, Lotfi Aleya, Mohamed M. Abdel-Daim
Summary: Transdermal drug delivery systems (TDDSs) are innovative methods for drug delivery through the skin, aiming to achieve systemic effects. The study focused on designing and optimizing methotrexate-loaded transdermal patches with different concentrations of ethyl cellulose (EC) and hydroxypropyl methyl cellulose (HPMC) for local management of psoriasis. The F5 formulation showed 82.71% sustained drug release and non-Fickian diffusion, with good stability for 180 days.
Article
Polymer Science
Yanan Sang, Pengpai Miao, Tao Chen, Yuan Zhao, Linfeng Chen, Yayang Tian, Xiaobing Han, Jie Gao
Summary: The incorporation of graphene oxide (GO) into a polymeric drug carrier enhances loading efficiency, reduces the initial burst, and improves the controllability of drug release. The study shows that adjusting the content of GO and the polymer can affect drug loading and encapsulation efficiency.
Review
Polymer Science
McKenzie L. Coughlin, Lucy Liberman, S. Piril Ertem, Jerrick Edmund, Frank S. Bates, Timothy P. Lodge
Summary: Methyl cellulose forms fibrils upon heating, leading to further intriguing questions about the fibrils themselves.
PROGRESS IN POLYMER SCIENCE
(2021)
Article
Chemistry, Applied
Xi'e Ye, Hui Peng, Xiaomei Liu, Hongran Xiong, Na Wang, Fenghong Yang, Yanrong Kong, Zhiwang Yang, Ziqiang Lei
Summary: Superabsorbent composites (SACs) were synthesized by aqueous solution polymerization of HPMC-g-P(AA-co-PASP)/ATP, reducing preparation cost and improving water and fertilizer retention properties of soil. The optimized SACs showed high equilibrium absorption in different liquids, and application to soil increased water holding capacity, reduced urea leaching, indicating potential for sustainable agriculture in the future.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Yajuan Wang, Shuting Jiang, Yue Chen, Dan Qiu, Yunxuan Weng
Summary: A novel composite edible film was synthesized by grafting gelatin chain onto hydroxypropyl methyl cellulose (HPMC) in the presence of glycerol as a plasticizer. The addition of gelatin improved the hydrophobic property of the blending film. The HPMC/gelatin blend films exhibited flexibility, compatibility, good mechanical properties, thermal stability, and could be potential candidates for food packaging materials.
Article
Polymer Science
Karla J. Merazzo, Ander Garcia Diez, Carmen R. Tubio, Juan Carlos Manchado, Ramon Malet, Marc Perez, Pedro Costa, Senentxu Lanceros-Mendez
Summary: This study investigates the magnetic properties of ABS-based composites for their potential use in magnetoactive systems. Different amounts of permalloy (Py-Ni75Fe20Mo5) nanoparticles were added to the ABS matrix to provide the desired magnetic properties. The composites showed no significant changes in thermal properties and exhibited improved mechanical properties with increasing filler content. The saturation magnetization of the composites also increased with increasing Py content. Overall, the minor enhancements in mechanical and magnetic properties make ABS composites suitable for applications in magnetic sensors, actuators, and magnetic field shielding.
Review
Chemistry, Physical
Daniel Miranda, Renato Goncalves, Stefan Wuttke, Carlos M. Costa, Senentxu Lanceros-Mendez
Summary: This review article describes the main theoretical electrochemical and thermal models for the simulation of lithium-ion battery performance. It also focuses on the recent theoretical simulation work on battery separators, including morphology, dendrite growth, ionic transport, and mechanical properties. Further simulations and modeling of battery separators are needed to improve performance in the new generation of lithium-ion batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Polymer Science
Djamila Zioui, Pedro Manuel Martins, Lamine Aoudjit, Hugo Salazar, Senentxu Lanceros-Mendez
Summary: The increasing contamination of wastewater, mainly caused by industrial processes, has led to an increase in waterborne diseases. This study focuses on the development and application of a PVDF-HFP porous membrane for the remediation of a wide range of contaminants from industrial wastewater. The membrane showed high permeability and demonstrated effective removal of organic matter, salinity, and certain inorganic anions and heavy metals. The PVDF-HFP membrane and the designed membrane reactor provide a viable and cost-effective solution for the simultaneous removal of organic and inorganic contaminants in real industrial effluents.
Article
Chemistry, Multidisciplinary
Mireia Andonegi, Daniela Correia, Nelson Pereira, Manuel Salado, Carlos M. Costa, Senentxu Lanceros-Mendez, Koro de la Caba, Pedro Guerrero
Summary: With the sustainable development goals in mind, sustainable sensors based on natural polymers are necessary for the widespread use of the Internet of Things (IoT). This study focuses on collagen-based blends with different ionic liquids (ILs) and their effects on mechanical, thermal, and electrical properties. The best electrical response is achieved with a collagen/[Ch][Seri] sample, which exhibits lower tensile strength and higher elongation at break. The functional response of collagen-IL films on a resistive touch sensor shows potential for sustainable touch sensing devices.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Paula G. Saiz, Ander Reizabal, Jose Luis Vilas-Vilela, Senentxu Lanceros-Mendez, Paul D. Dalton
Summary: Melt electrowriting (MEW) is used to produce complex polymeric microstructures by controlling electrified polymer jet deposition. This study explores the potential of designing poly-(epsilon-caprolactone) MEW microstructures with thermochromic responses. Samples with up to 4 wt % thermochromic dye content were processed without compromising printing quality. The ability to include additives in the MEW process expands its applicability.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Estela O. Carvalhoab, Mikel Rincon-Iglesias, Ricardo Brito-Pereira, Erlantz Lizundia, Margarida M. Fernandes, Senentxu Lanceros-Mendez
Summary: The development of new bio-based materials with unique chemical and structural features is essential for addressing the global healthcare concern of rising infections caused by multidrug-resistant pathogens. In this study, an antimicrobial biomaterial was created by blending amino-modified cellulose with silk fibroin, resulting in a material with improved crystallinity and antibacterial activity. This material has the potential to be used in biomedical applications, such as coatings for medical devices to control healthcare-associated infections, without the need for external antimicrobial agents.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Armando Ferreira, Carlos M. Costa, Marcio A. Correa, Rafael S. Pinto, Renato Gonsalves, Luana C. Benetti, Senentxu Lanceros-Mendez, Filipe Vaz
Summary: The necessity for energy conversion solutions has increased in recent years, particularly for powering small and flexible IoT devices. This study explores the use of thermoelectric effects, specifically the anomalous Nernst effect, by producing Co2FeAl/P(VDF-TrFE-CFE) heterostructures on flexible poly (vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) substrates. The results demonstrate that the flexible polymer substrate does not affect the thermomagnetic effect, opening new possibilities for integrating flexible high-dielectric polymers with thermomagnetic phenomena for energy harvesting applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Biomedical
Esperanza Diaz, Marta Delafuente, Sara Delafuente, Sylvie Ribeiro, Senentxu Lanceros-Mendez
Summary: This paper studies the degradation behavior of poly(d,l-lactide-co-glycolide/reduced graphene oxide scaffolds obtained by thermally induced phase separation and lyophilization in phosphate buffered saline solution at 37°C for eight weeks. The addition of rGO particles increases the pore size and improves the morphological definition of the scaffolds. Higher rGO concentrations result in faster degradation and the restriction of movement of macromolecular chain segments. The addition of rGO also leads to a transition from insulating to conductive scaffolds with a percolation value of approximately 0.5 w/w. All PLGA samples with rGO content up to 1% show no cytotoxic behavior and are suitable for biomedical applications.
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
(2023)
Review
Polymer Science
A. Reizabal, C. M. Costa, L. Perez-Alvarez, J. L. Vilas-Vilela, S. Lanceros-Mendez
Summary: Silk Fibroin (SF), extracted from Bombyx mori cocoons, is crucial for developing sustainable multifunctional materials. SF's unique properties have been applied in various fields like energy harvesting and biomedicine. However, modifying its properties and adding new characteristics is necessary for specific applications.
Article
Polymer Science
Mireia Andonegi, Daniela M. Correia, Nelson Pereira, Carlos M. Costa, Senentxu Lanceros-Mendez, Koro de la Caba, Pedro Guerrero
Summary: This work presents the development of collagen films containing graphene oxide nanoparticles (GO NPs), which exhibit enhanced thermal stability, hydrophilicity, and mechanical strength, making them suitable for sustainable sensor applications.
Retraction
Chemistry, Multidisciplinary
Mohamed K. Ahmed, Ahmed Esmail Shalan, Mohamed Afifi, Mohamed M. El-Desoky, Senentxu Lanceros-Mendez
Retraction
Chemistry, Multidisciplinary
Mohamed K. Ahmed, Ahmed Esmail Shalan, Mohamed Afifi, Mohamed M. El-Desoky, Senentxu Lanceros-Mendez
Review
Materials Science, Multidisciplinary
M. Sankush Krishna, Sangeeta Singh, Maria Batool, Heba Mohamed Fahmy, Kondaiah Seku, Ahmed Esmail Shalan, Senentxu Lanceros-Mendez, Muhammad Nadeem Zafar
Summary: This review presents the recent advances and applications of 2D-ZnO nanostructure-based biosensors. ZnO demonstrates various morphologies and exhibits high sensitivity and stability in biosensing applications. Different types of biosensors based on ZnO nanostructures, including optical, piezoelectric, and electrochemical sensors, are discussed. Furthermore, the review summarizes the latest research on detecting COVID-19 using ZnO nanostructures.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Reza Eivazzadeh-Keihan, Fatemeh Ganjali, Hooman Aghamirza Moghim Aliabadi, Ali Maleki, Saeedeh Pouri, Mohammad Mahdavi, Ahmed Esmail Shalan, Senentxu Lanceros-Mendez
Summary: A novel multifunctional biocomposite scaffold based on cellulose, beta-cyclodextrin, silk fibroin, and magnetic copper-doped cobalt ferrite nanospheres has been developed. The scaffold shows good core-shell morphology, thermal stability, chemical bonds, and particle distribution. It exhibits high cell viability, low hemolytic effect, and antibacterial property, making it suitable for various biomedical applications.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2023)