Functionalized Materials for Miniaturized Analytical Devices

2021 ◽  
pp. 181-195
Author(s):  
Hani Nasser Abdelhamid
Keyword(s):  
Functionalized Materials

Nanodrugs as a new approach in therapy of cardiovascular diseases and cancer with tumor-associated angiogenesis

2020 ◽  
Vol 28 ◽  
Author(s):  
Justyna Hajtuch ◽  
Karolina Niska ◽  
Iwona Inkielewicz-Stepniak
Keyword(s):  
Cardiovascular Disease ◽  
Cardiovascular Diseases ◽  
Controlled Drug Release ◽  
Biological Properties ◽  
Comprehensive Information ◽  
Conventional Drug ◽  
Key Factor ◽  
Functionalized Materials

Background: Cancer along with cardiovascular diseases are globally defined as leading causes of death. Importantly, some risk factors are common to these diseases. The process of angiogenesis and platelets aggregation are observed in cancer development and progression. In recent years, studies have been conducted on nanodrugs in these diseases that have provided important information on the biological and physicochemical properties of nanoparticles. Their attractive features are that they are made of biocompatible, well-characterized and easily functionalized materials. Unlike conventional drug delivery, sustained and controlled drug release can be obtained by using nanomaterials. Methods: In this article, we review the latest research to provide comprehensive information on nanoparticle-based drugs for the treatment of cancer, cardiovascular disease associated with abnormal haemostasis, and the inhibition of tumorassociated angiogenesis. Results: The results of the analysis of data based on nanoparticles with drugs confirm their improved pharmaceutical and biological properties, which gives promising antiplatelet, anticoagulant and antiangiogenic effects. Moreover, the review included in vitro, in vivo research and presented nanodrugs with chemotherapeutics approved by Food and Drug Administration. Conclusion: By the optimization of nanoparticles size and surface properties, nanotechnology are able to deliver drugs with enhanced bioavailability in treatment of cardiovascular disease, cancer and inhibition of cancer-related angiogenesis. Thus, nanotechnology can improve the therapeutic efficacy of the drug, but there is a need for a better understanding of the nanodrugs interaction in the human body, because this is a key factor in the success of potential nanotherapeutics.

scholarly journals Functionalized Materials as a Versatile Platform for Enzyme Immobilization in Wastewater Treatment

2021 ◽  
Author(s):  
Agnieszka Kołodziejczak-Radzimska ◽  
Long D. Nghiem ◽  
Teofil Jesionowski
Keyword(s):  
Wastewater Treatment ◽  
Enzyme Immobilization ◽  
Organic Dyes ◽  
Scientific Progress ◽  
Immobilized Enzymes ◽  
Chemical Oxidation ◽  
Biologically Active ◽  
Water Pollutants ◽  
Untreated Wastewater ◽  
Functionalized Materials

Abstract Purpose of Review Untreated wastewater discharge can significantly and negatively impact the state of the environment. Rapid industrialization and economic development have directly contributed to land and water pollution resulting from the application of many chemicals such as organic dyes, pharmaceuticals, and industrial reagents. The removal of these chemicals before effluent discharge is crucial for environmental protection. This review aims to explore the importance of functionalized materials in the preparation of biocatalytic systems and consider their application in eliminating water pollutants. Recent Findings Wastewater treatment methods can be classified into three groups: (i) chemical (e.g., chemical oxidation and ozonation), (ii) physical (e.g., membrane separation and ion exchange), and (iii) biological processes. Biological treatment is the most widely used method due to its cost-effectiveness and eco-friendliness. In particular, the use of immobilized enzymes has recently become more attractive as a result of scientific progress in advanced material synthesis. The selection of an appropriate support plays an important role in the preparation of such biologically active systems. Recent studies have demonstrated the use of various materials for enzyme immobilization in the purification of water. Summary This review identifies and discusses different biocatalytic systems used in the enzymatic degradation of various water pollutants. Materials functionalized by specific groups can serve as good support matrices for enzyme immobilization, providing chemical and thermal stability to support catalytic reactions. Enzymatic biocatalysis converts the pollutants into simpler products, which are usually less toxic than their parents. Due to immobilization, the enzyme can be used over multiple cycles to reduce the cost of wastewater treatment. Future studies in this field should focus on developing new platforms for enzyme immobilization in order to improve degradation efficiency.

Functionalization of SBA-15 materials for the adsorption of phenols from aqueous solution

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Joumana Toufaily ◽  
Bachar Koubaissy ◽  
Lina Kafrouny ◽  
Hussein Hamad ◽  
Patrick Magnoux ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Total Pore Volume ◽  
Bet Surface Area ◽  
Batch Adsorption ◽  
Water Molecules ◽  
Amine Group ◽  
Toxic Compounds ◽  
Elementary Analysis ◽  
Functionalized Materials ◽  
Basic Behavior

AbstractWater pollution by toxic organic compounds is a problem and demand for efficient adsorbents for the removal of toxic compounds is increasing. In the present work, we studied the functionalization of SBA-15 materials via the co-condensation between an alkoxysilane and an organoalkoxysilane in the presence of P123 as structuring agent. Several types of ligands were used: 3-mercaptopropylmethyldimethoxysilane, N-[3-(trimethoxysilyl) propyl] aniline; aminopropyltrimethoxysilane; [aminoethylamino]-propyltrimethoxysilanes and [(2-aminoethylamino) ethylamino] propyltrimethoxysilanes. These materials exhibit BET surface area of 275–776 m2/g and total pore volume of 0.29–1 cm3/g, depending on the ligand types and contents. Elementary analysis results confirm the incorporation of both thiol and amine group in the materials. Batch adsorption studies shows that the adsorption capacity of phenol drifts on the amine and thiol functionalized SBA-15 is greater than that on pure SBA-15. A linear relationship was observed between the adsorption capacity and N/SiO2 ratio. It was shown that the presence of amine promotes interactions with water molecules, on the other hand, these results can also be explained by the basic behavior of N-functionalized materials.

Construction of superhydrophobic microenvironment via polystyrene coating: an unexpected way to stabilize CuI against oxidation

2021 ◽  
Author(s):  
Yu-Xia Li ◽  
Yu-Nong Ji ◽  
Shi-Xian Mao ◽  
Meng-Meng Jin ◽  
Xiao-Qin Liu ◽  
...  
Keyword(s):  
Adsorptive Desulfurization ◽  
Practical Applications ◽  
High Potentials ◽  
Functionalized Materials

CuI-functionalized materials show high potentials in numerous applications such as adsorptive desulfurization. Nonetheless, the instability of CuI against oxidation limits the practical applications, and exposure of CuI to air can...

Influence of sterilization conditions on sulfate-functionalized polyGGE

2021 ◽  
pp. 1-12
Author(s):  
Shuo Zhou ◽  
Xun Xu ◽  
Nan Ma ◽  
Friedrich Jung ◽  
Andreas Lendlein
Keyword(s):  
Microbial Contamination ◽  
Gamma Ray ◽  
Glycidyl Ether ◽  
Biological Processes ◽  
Chain Mobility ◽  
Functionalized Materials ◽  
Polymeric Implants ◽  
Gamma Ray Irradiation ◽  
Group Density ◽  
Living Organisms

Sulfated biomolecules are known to influence numerous biological processes in all living organisms. Particularly, they contribute to prevent and inhibit the hypercoagulation condition. The failure of polymeric implants and blood contacting devices is often related to hypercoagulation and microbial contamination. Here, bioactive sulfated biomacromolecules are mimicked by sulfation of poly(glycerol glycidyl ether) (polyGGE) films. Autoclaving, gamma-ray irradiation and ethylene oxide (EtO) gas sterilization techniques were applied to functionalized materials. The sulfate group density and hydrophilicity of sulfated polymers were decreased while chain mobility and thermal degradation were enhanced post autoclaving when compared to those after EtO sterilization. These results suggest that a quality control after sterilization is mandatory to ensure the amount and functionality of functionalized groups are retained.

scholarly journals Textile packaging - the connection between science and health

2020 ◽  
Vol 71 (02) ◽  
pp. 138-144
Author(s):  
Eftalea CĂRPUȘ ◽  
Angela Dorogan ◽  
Cristina Stroe
Keyword(s):  
Food Packaging ◽  
Nutrition Status ◽  
Contact Materials ◽  
Food Contact ◽  
Technical Textiles ◽  
Nutrition Policies ◽  
Food And Nutrition ◽  
Functionalized Materials ◽  
Military Security ◽  
Political Security

According to the Report presented in the ONU Program for Development there are eight dimensions of international security (collective security) and national security: economic-social security, food security, environmental security, community security, personal security, political security and individual security, to which demographic security and military security could be added. Although there have been concerns about the nutrition status of the population since ancient times, it was only in the middle of the last century that the scientific and institutional bases of contemporary food and nutrition policies were laid. Food and nutrition policies are represented by a series of objectives, priorities, norms and decisions adopted by the invested factors and institutions with the competences necessary to ensure to the entire population the economic and social conditions for a good state of individual and public health. Packaging has become one of the most important functions of a product, of a commodity on the market. The packaging is part of the Food Contact Materials (FCMs) group, which should not affect the health of consumers or alter the quality of the products. The breadth and complexity of the socio-economic context in the food contact sector requires finding additional ways to adapt. In this context, the textile sector, respectively the field of technical textiles, through the potential of functionalities, can make a special contribution to achieving a level of coherence between the field of functionalized materials intended for food packaging – environment – consumer health – free movement of products – efficient functioning of the internal market.

Incorporation of fluorescent quantum dots for 3D printing and additive manufacturing applications

2018 ◽  
Vol 6 (28) ◽  
pp. 7584-7593 ◽  
Author(s):  
Cole D. Brubaker ◽  
Talitha M. Frecker ◽  
James R. McBride ◽  
Kemar R. Reid ◽  
G. Kane Jennings ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Quantum Dot ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Cadmium Sulfur Selenide ◽  
Functionalized Materials ◽  
Deposition Modeling ◽  
Manufacturing Applications

3D printing of cadmium sulfur selenide quantum dot functionalized materials compatible with fused deposition modeling type processes and applications.

ADMET

2016 ◽  
pp. 1-21
Author(s):  
Taylor W Gaines ◽  
Kathryn R. Williams ◽  
Kenneth Boone Wagener
Keyword(s):  
Acyclic Diene Metathesis ◽  
Functionalized Materials ◽  
Diene Metathesis ◽  
Polymerization Method

The use of acyclic diene metathesis (ADMET) in the synthesis of functionalized polyolefins is discussed. The nature of polymerizations, catalysts, and techniques are briefly covered. An overview of recent functionalized ADMET polymers and major contributions to its methodology is given. This chapter will place special emphasis on the use of ADMET to synthesize increasingly complex and new morphologies, resulting in well-defined polyolefin structures and functionalized materials unlocked as a result of this powerful polymerization method. Presented are polyolefins, materials, and architectures not possible through conventional polymerization techniques.

Preparation, uranium (VI) absorption and reuseability of marine fungus mycelium modified by the bis-amidoxime-based groups

2019 ◽  
Vol 108 (1) ◽  
pp. 37-49 ◽  
Author(s):  
Dianxiong He ◽  
Ni Tan ◽  
Xiaomei Luo ◽  
Xuechun Yang ◽  
Kang Ji ◽  
...  
Keyword(s):  
Orthogonal Experiment ◽  
Model Fitting ◽  
Freundlich Isotherm ◽  
Marine Fungus ◽  
Absorption Capacity ◽  
Adsorption Model ◽  
Characterization Methods ◽  
Before And After ◽  
Functionalized Materials ◽  
Fungus Mycelium

Abstract Bis-amidoxime-based claw-like-functionalized marine fungus material (ZZF51-GPTS-DCDA-AM) was prepared for study to absorb the low concentration uranium (VI) from aqueous solution. A series of characterization methods such as SEM, TGA and FT-IR were applied for the functionalized materials before and after modification and adsorption. The experimental results suggested that the amidoxime groups were successfully grafted onto the surface of mycelium powder and provided the special binding sites for the absorption of uranium (VI). In the absorption research, uranium (VI) initial concentration, pH and equilibrium time were optimized as 40 mg L−1, 6.0, and 110 min by L43 orthogonal experiment, respectively, and the maximum absorption capacity of the prepared material was 370.85 mg g−1 under the optimum batch conditions. After five cycling process, the desorption rate and regeneration efficiency of the modified mycelium were found to be 80.29 % and 94.51 %, respectively, which indicated that the material had an adequately high reusability property as a cleanup tool. The well known Langmuir and Freundlich isotherm adsorption model fitting found that the modified materials had both monolayer and bilayer adsorption to uranium (VI) ions. Simultaneously, the pseudo-second-order model was better to illustrated the adsorption kinetics process. The enhanced adsorption capacity of uranium (VI) by the modified fungus materials over raw biomass was mainly owing to the strong chelation of amidoxime groups and uranium (VI) ions.

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