Current Applied Polymer Science - Volume 4, Issue 2, 2021

Background: Aiming at in situ regenerative therapy, the tailored design of cytokine-releasing scaffolds is still one of the crucial issues to be studied. A core-shell fibermat is one of the attractive platforms for this purpose. But, very few detail the importance of choosing the right material for the shell units that can endow efficient release properties. Objective: In this study, we characterized the effectiveness of core-shell fibermat Read More

Polysarcosine (psar) is a non-ionic hydrophilic polypeptoid with numerous biologically relevant properties. Polysarcosine is poly (n-methylated glycine) and has been reported first by Weslay and co-workers in the 1920s. Polysarcosine was first synthesized via ring-opening polymerization (rop) of sarcosine n-carboxyanhydride, using high-vacuum techniques. Overall, findings highlight the potential of poly(sarcosine) as an al Read More

Background: In the last decades, the prevalence of obesity showed a significant increase in several countries. This fact is very worrying since there is an association between obesity and metabolic alterations, such as type II diabetes, hypertension, cardiovascular diseases, some types of cancer, and glucose intolerance. Knowledge of causes, preventive strategies, and treatment have been objects of studies by researchers in sev Read More

Background: The mixing of the formation water present in oil and gas reservoirs and the injected water (often seawater) can form inorganic incrustations, during enhanced oil recovery operations. In this case, the cations (calcium, barium, strontium, iron, magnesium, etc.) of the injected water react with the anions (mainly sulfate and carbonate) of the formation water and produce inorganic salts that can precipitate in th Read More

Background: Sandwich structures are progressively being used in various engineering applications due to the superior bending-stiffness-to-weight ratio of these structures. We adapted a novel technique to incorporate carbon nanotubes (CNTs) and polyhedral oligomeric silsesquioxanes (POSS) into a sandwich composite structure utilizing a sonochemical and high temperature vacuum assisted resin transfer molding technique. O Read More

Background: Eucalyptus bark and scraps are generated in the production of medium- density fiberboard (MDF). An approach aiming to add value to such wastes was studied, following the concepts of circular economy and biomass cascade strategy. Bio-oil and phenolic resin were produced by pyrolysis from two types of biomass, Eucalyptus bark and MDF waste. As is well known, conventional phenolic resins are normally obtain Read More

Background: This work presents the preparation and characterization of the polymeric nanocomposites based on methyl methacrylate (MMA), ethyl acrylate (EA), and natural and modified clays. The clays used to prepare the composite were natural green bentonite (GBC-N) and organophilic clays modified with ammonium quaternary salts: Praepagen (GCB-P), Dodigen (GCB-D) and Praepagen/Dodigen mixture 1:1 in weight (G Read More

Objective: The objective of this work is to study the artificial ageing of semi-rigid and plasticized polyvinyl chloride (PVC) stabilized with epoxidized sunflower oil (ESO) as a biobased derivative in combination with zinc and calcium stearates. Methods: For comparison, a formulation of PVC plasticized and stabilized with epoxidized soya bean oil (ESBO) was considered. Artificial ageing was carried out during the 304 hours. Sa Read More