Three dimensional-printability of green composites is recently growing in importance and interest, especially the view feasibility to valorize agricultural marine waste attain fillers capable reducing bioplastic costs, without compromising their processability performance from an environmental mechanical standpoint. In this work, two lignocellulosic fillers, obtained Opuntia ficus indica Posidonia oceanica, were added PLA processed by FDM. Among 3D printed biocomposites investigated, slight...

5-Endo-dig cycloisomerization of 1,4-di- and 1,2,4-trisubstituted but-3-yn-1-ones in the presence a catalytic amount zinc chloride (10 mol %) dichloromethane at room temperature (22 °C) provides 2,5-di- 2,3,5-trisubstituted furans high yields (85−97%).

The rising concerns in terms of environmental protection and the search for more versatile polymer-based materials have led to an increasing interest use polymer composites filled with natural organic fillers (biodegradable and/or coming from renewable resources) as a replacement traditional mineral inorganic fillers. At same time, recycling polymers is still fundamental importance order optimize utilization available resources, reducing impact related life cycle items. Green biopolymer...

In this work, an innovative green composite was produced by adding Hedysarum coronarium (HC) flour to a starch-based biodegradable polymer (Mater-Bi®, MB). The obtained grinding together stems, leaves and flowers subsequently sieving it, selecting fraction from 75 μm 300 μm. Four formulations have been compression molding (CM) fused deposition modeling (FDM) 5%, 10%, 15% 20% of HC MB. influence filler content on the processability tested, rheological, morphological mechanical properties...

3D printability of green composites is currently experiencing a boost in importance and interest, envisaging way to valorise agricultural waste, order obtain affordable fillers for the preparation biodegradable polymer-based with reduced cost environmental impact, without undermining processability mechanical performance. In this work, an innovative composite was prepared by combining starch-based polymer (Mater-Bi®, MB) filler obtained from lignocellulosic waste coming Solanum lycopersicum...

Biodegradable polymers have recently become popular; in particular, blends of poly(lactic acid) (PLA) and poly(butylene adipate terephthalate) (PBAT) attracted significant attention due to their potential application the packaging field. However, there is little information about thermomechanical properties these especially effect induced by addition PBAT on shape memory PLA. This work, therefore, aims at producing investigating microstructural, PLA/PBAT prepared melt compounding. More...

The widespread and increasing use of plastic-based goods in the present-day world has been raising many concerns about formation microplastics, their release, impacts on environment and, ultimately, living organisms. These are even greater regarding nanoplastics, i.e., nanosized which may have impacts. In this brief review, although without any claim or intention to exhaustively cover all aspects such a complex many-sided issue, very topical problem more worrisome from polymer-based products...

Abstract The addition of organic fillers into thermoplastic polymers is an interesting issue, which has had growing consideration and experimentation during the last years. It can give rise to several advantages. First, cost these usually very low. Also, are biodegradable (thus contributing improved environmental impact), finally, some mechanical thermomechanical properties be enhanced. In this study, effect different on processability extrusion‐grade polypropylene were investigated. came...

Abstract PLA is one of the most interesting new polymeric materials, mainly because its favorable environmental features. On other hand, drawbacks represented by brittleness and low impact resistance. A possible solution may be use proper modifiers. Furthermore, limited knowledge exists on behavior upon recycling. In this paper, a detailed investigation has been carried out systems adding small amounts commercial modifiers, effects multiple recycling steps have studied. The modifiers can...

Triple-negative breast cancer is a group of aggressive cancers with poor prognosis owing to chemoresistance, recurrence and metastasis. New strategies are required that could reduce chemoresistance increases the effectiveness chemotherapy. The results presented in this paper, showing parthenolide (PN) prevents drug resistance MDA-MB231 cells, represent contribution one these possible strategies. most studied line TNBC were submitted selection treatment mitoxantrone (Mitox) doxorubicin (DOX)....

The formulation of polymeric films endowed with the abilities controlled release antimicrobials and biodegradability is latest trend food packaging. Biodegradable polymer (Bio-Flex®)-based nanocomposites containing carvacrol as an antimicrobial agent, a nanoclay filler, were processed into blown films. presence such hybrid loading, while not affecting overall filmability neat matrix, led to enhanced mechanical properties, relative increments up +70% +200% in terms elastic modulus elongation...

5-Endo-dig cycloisomerization of 1,4- and 1,2,4- mostly aryl-substituted but-3-yn-1-ones in the presence a catalytic amount zinc chloride etherate (10 mol %) dichloromethane at room temperature gave 2,5-di- 2,3,5-trisubstituted furans high yields (85−97%). DSC studies confirmed that solely thermal process does not take place. A relevant process, employing μ-oxo-tetranuclear cluster Zn4(OCOCF3)6O, yielded bicyclic furopyrimidine nucleosides, when starting from acetyl-protected...

Abstract The 5‐ endo ‐ dig chlorocyclization of 1,4‐disubstituted alk‐3‐yn‐1‐ones (propargylic ketones) with the use trichloro‐ s ‐triazinetrione (trichloroisocyanuric acid, TCCA; 0.4 equiv.) in toluene, at room temperature, absence base, provides 2,5‐disubstituted 3‐chlorofurans high yields (79–96 %). reaction can be accomplished by using commercially available swimming pool sanitizer. Selected 3‐chlorofuran was validated as a substrate for Suzuki–Miyaura coupling. In similar manner,...

Abstract The increase of the interest in polymer nanocomposites has been leading to continuous growing search toward nanofillers alternative widely known clay‐based ones. One these possible alternatives is represented by calcium carbonate nanoparticles, which have not investigated such context. In this article, a study on rheological and morphological behavior different low density polyethylene‐calcium nanocomposites, compared with reference microcomposite, presented. Several nanosized...

Abstract Composites obtained from biodegradable polymers and natural–organic fillers are attracting increasing interest, thanks to the environmental advantages they promise. On other hand, real biodegradation performance of a polymer/natural organic filler composite should be assessed by performing specific tests. These often carried out under laboratory conditions, but more realistic conditions taken into account. In this work, systematic study on kenaf fiber‐filled Mater‐Bi® composites in...