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  1. Article: Waste Cooking Oil as Eco-Friendly Rejuvenator for Reclaimed Asphalt Pavement.

    Bardella, Noemi / Facchin, Manuela / Fabris, Eleonora / Baldan, Matteo / Beghetto, Valentina

    Materials (Basel, Switzerland)

    2024  Volume 17, Issue 7

    Abstract: Over 50 MioT of Waste Cooking Oil (WCO) was collected worldwide in 2020 from domestic and industrial activities, constituting a potential hazard for both water and land environments, and requiring appropriate disposal management strategies. In line with ... ...

    Abstract Over 50 MioT of Waste Cooking Oil (WCO) was collected worldwide in 2020 from domestic and industrial activities, constituting a potential hazard for both water and land environments, and requiring appropriate disposal management strategies. In line with the principles of circular economy and eco-design, in this paper an innovative methodology for the valorisation of WCO as a rejuvenating agent for bitumen 50/70 coming from Reclaimed Asphalt Pavement (RAP) is reported. In particular, WCO or hydrolysed WCO (HWCO) was modified by transesterification or amidation reactions to achieve various WCO esters and amides. All samples were characterised by nuclear magnetic resonance, melting, and boiling point. Since rejuvenating agents for RAP Cold Mix Asphalt require a melting point ≤0 °C, only WCO esters could further be tested. Efficiency of WCO esters was assessed by means of the Asphaltenes Dispersant Test and the Heithaus Parameter. In particular, bitumen blends containing 25 wt% of WCO modified with 2-phenylethyl alcohol, showed high dispersing capacity in
    Language English
    Publishing date 2024-03-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma17071477
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Efficient Triazine Derivatives for Collagenous Materials Stabilization.

    Gatto, Vanessa / Conca, Silvia / Bardella, Noemi / Beghetto, Valentina

    Materials (Basel, Switzerland)

    2021  Volume 14, Issue 11

    Abstract: Nowadays, the need to reduce plastic waste and scantly biodegradable fossil-based products is of great importance. The use of leather as an alternative to synthetic materials is gaining renewed interest, but it is fundamental that any alternative to ... ...

    Abstract Nowadays, the need to reduce plastic waste and scantly biodegradable fossil-based products is of great importance. The use of leather as an alternative to synthetic materials is gaining renewed interest, but it is fundamental that any alternative to plastic-based materials should not generate an additional environmental burden. In the present work, a simple protocol for collagen stabilization mediated by 2-chloro-4,6-diethoxy-1,3,5-triazine (CDET) and a
    Language English
    Publishing date 2021-06-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma14113069
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Sustainable Triazine-Based Dehydro-Condensation Agents for Amide Synthesis.

    Sole, Roberto / Gatto, Vanessa / Conca, Silvia / Bardella, Noemi / Morandini, Andrea / Beghetto, Valentina

    Molecules (Basel, Switzerland)

    2021  Volume 26, Issue 1

    Abstract: Conventional methods employed today for the synthesis of amides often lack of economic and environmental sustainability. Triazine-derived quaternary ammonium salts, e.g., 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMTMM(Cl)), ... ...

    Abstract Conventional methods employed today for the synthesis of amides often lack of economic and environmental sustainability. Triazine-derived quaternary ammonium salts, e.g., 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMTMM(Cl)), emerged as promising dehydro-condensation agents for amide synthesis, although suffering of limited stability and high costs. In the present work, a simple protocol for the synthesis of amides mediated by 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) and a
    MeSH term(s) Amides/chemical synthesis ; Amines/chemistry ; Benzamides/chemical synthesis ; Carboxylic Acids/chemistry ; Chemistry Techniques, Synthetic/methods ; Perchlorates/chemistry ; Phenethylamines/chemical synthesis ; Piperazines/chemistry ; Quaternary Ammonium Compounds/chemistry ; Solvents/chemistry ; Triazines/chemistry
    Chemical Substances Amides ; Amines ; Benzamides ; Carboxylic Acids ; N-phenethylbenzamide ; Perchlorates ; Phenethylamines ; Piperazines ; Quaternary Ammonium Compounds ; Solvents ; Triazines ; 1,4-dimethylpiperazine (TF146U602L) ; perchlorate (VLA4NZX2P4)
    Language English
    Publishing date 2021-01-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules26010191
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  4. Article: By-products from mechanical recycling of polyolefins improve hot mix asphalt performance

    Beghetto, Valentina / Bardella, Noemi / Samiolo, Riccardo / Gatto, Vanessa / Conca, Silvia / Sole, Roberto / Molin, Giacomo / Gattolin, Andrea / Ongaro, Nicola

    Journal of cleaner production. 2021 Oct. 10, v. 318

    2021  

    Abstract: Waste of polyolefin (WOPO), the sinking fraction of polyolefin recycling, is today a production waste sent to incineration. This work reports a method for the recycling of WOPO as efficient additives to produce hot mix asphalt (HMA). Physical-mechanical ... ...

    Abstract Waste of polyolefin (WOPO), the sinking fraction of polyolefin recycling, is today a production waste sent to incineration. This work reports a method for the recycling of WOPO as efficient additives to produce hot mix asphalt (HMA). Physical-mechanical characteristics of HMA containing bitumen 50/70 and WOPO were compared to PE/PP mixed polyolefin (MPO) and standard HMA control specimen. Modified HMA mixtures were characterized by density, air voids, indirect tensile strength, indirect traction coefficient, Marshall stability and quotation. Atmospheric emissions for HMA containing WOPO were proven to comply within Italian legal requirements. Data acquired demonstrate that HMA containing 4 wt% of grinded WOPO by weight of asphalt binder may be efficiently employed as flexible and resistant mixture for road pavement. Environmental and economic data reported further highlight the impact of this technology, not only for asphalt producers, but also for recycling facilities, improving plastic recycling, reducing plastic incineration, waste management costs and greenhouse emissions.
    Keywords air ; bitumen ; greenhouses ; pavements ; polyolefin ; tensile strength ; wastes
    Language English
    Dates of publication 2021-1010
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2021.128627
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Polyamidoamide Dendrimers and Cross-Linking Agents for Stabilized Bioenzymatic Resistant Metal-Free Bovine Collagen.

    Beghetto, Valentina / Gatto, Vanessa / Conca, Silvia / Bardella, Noemi / Scrivanti, Alberto

    Molecules (Basel, Switzerland)

    2019  Volume 24, Issue 19

    Abstract: The work reports the use of polyamidoamine dendrimers (PAMAM) and a cross-linking agent, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide/ ...

    Abstract The work reports the use of polyamidoamine dendrimers (PAMAM) and a cross-linking agent, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide/
    MeSH term(s) Animals ; Calorimetry, Differential Scanning ; Cattle ; Collagen/chemistry ; Collagenases/metabolism ; Cross-Linking Reagents/chemistry ; Dendrimers/chemistry ; Enzyme Assays ; Succinimides/chemistry ; Tanning ; Temperature
    Chemical Substances 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide N-hydroxysuccinimide ; Cross-Linking Reagents ; Dendrimers ; PAMAM Starburst ; Succinimides ; Collagen (9007-34-5) ; Collagenases (EC 3.4.24.-)
    Language English
    Publishing date 2019-10-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules24193611
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  6. Article ; Online: Development of 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride cross-linked carboxymethyl cellulose films.

    Beghetto, Valentina / Gatto, Vanessa / Conca, Silvia / Bardella, Noemi / Buranello, Chiara / Gasparetto, Giulia / Sole, Roberto

    Carbohydrate polymers

    2020  Volume 249, Page(s) 116810

    Abstract: First example of the use of 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM) as cross-linking agent for the development of carboxymethyl cellulose (CMC) films for food packaging is reported. Influence of different wt % of DMTMM ...

    Abstract First example of the use of 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM) as cross-linking agent for the development of carboxymethyl cellulose (CMC) films for food packaging is reported. Influence of different wt % of DMTMM and glycerol on the physical-mechanical properties of CMC films was investigated. The presence of DMTMM effectively improved moisture uptake, moisture content, water vapour permeability, water solubility of the films, oil resistance together with good biodegradability. Best compromise between high water resistance, vapour permeability and mechanical properties was accomplished with 5 wt % DMTMM and 50 wt % glycerol giving tensile strength and elongation at break of 52.25 ± 4.33 and 37.32 ± 2.04 respectively. DSC, TGA and SEM analysis further confirmed CMC cross-linking by DMTMM. All films prepared showed low opacity and high transparencies. Therefore, data reported show that DMTMM can efficiently cross-link CMC to produce films for food packaging.
    Language English
    Publishing date 2020-07-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2020.116810
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Synthesis of Amidation Agents and Their Reactivity in Condensation Reactions

    Sole, Roberto / Agostinis, Lodovico / Conca, Silvia / Gatto, Vanessa / Bardella, Noemi / Morandini, Andrea / Buranello, Chiara / Beghetto, Valentina

    Synthesis

    2020  Volume 53, Issue 09, Page(s) 1672–1682

    Abstract: Nowadays, the development of new approaches which smartly bypass the use of harsh reaction conditions and hazardous chemicals covers a pivotal role. In this research paper the synthesis, characterization, and application of novel libraries of triazine ... ...

    Abstract Nowadays, the development of new approaches which smartly bypass the use of harsh reaction conditions and hazardous chemicals covers a pivotal role. In this research paper the synthesis, characterization, and application of novel libraries of triazine bis-quaternary ammonium salts, employed as coupling agents to produce amides is reported. Full characterization of the novel compounds by 1 H and 13 C NMR, FT-IR spectroscopy, ESI-HRMS, and elemental analysis is provided. Furthermore, a comparison in terms of activity of the preformed triazine compounds versus in situ formulations has been evaluated for the formation of amides in the presence of phenylethylamine and different aliphatic or aromatic acids. A possible correlation between the chemical structure of the triazine and their reactivity for the formation of the triazine bis-quaternary ammonium salts is also reported. Moreover, best performing condensation agents have been further tested for the cross-linking of collagen powder as possible wet white tanning systems, for sustainable and environmentally friendly leather tanning.
    Keywords 1,3,5-triazine bis-quaternary ammonium salts ; amidation agents ; collagen cross-linking ; green chemistry ; sustainable leather tanning
    Language English
    Publishing date 2020-12-10
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2033062-5
    ISSN 1437-210X ; 0039-7881
    ISSN (online) 1437-210X
    ISSN 0039-7881
    DOI 10.1055/a-1334-6916
    Database Thieme publisher's database

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