26 documents found, page 1 of 3
Nanocomposites from β-Pinene and α-Pinene Copolymer: Synthesis, Characterizatio...
Derdar, Hodhaifa; Cherifi, Zakaria; Mitchell, Geoffrey; Mateus, Artur; Zerrouki, Meziane; Hammoudi, Naima; Bachari, Khaldoun; Chebout, RedouaneIn this study, we present a novel and straightforward approach for the synthesis of copolymers and nanocomposites based on α- and β-pinene, employing an eco-friendly and cost-effective nano-reinforcing filler. The copolymers (α-co-β-P) were produced through cationic copolymerization, using AlCl3 as a catalyst. The structural characterization of the resulting copolymer was validated through FT-IR, 1H-NMR spectro...
Preservation of fresh-cut Rocha Pear using Codium tomentosum extract
Augusto, Ana; Miranda, Andreia; Crespo, Daniel; Campos, Maria J.; Raimundo, Délio; Pedrosa, Rui; Mitchell, Geoffrey; Niranjan, KeshavanRocha is a Portuguese pear cultivar with high economic importance in the Portuguese Western Region. Degradative processes following its manipulation can quickly lead to product rejection, especially when sold as a freshcut product. The efficacy of a marine-based edible coating to inhibit superficial browning development in freshcut Rocha pear slices was investigated over a storage period of 15 days. The aqueous...
A pilot plant scale testing of the application of seaweed-based natural coating...
Augusto, Ana; Miranda, Andreia; Costa, Leonor; Pinheiro, Joaquina; Campos, Maria J.; Raimundo, Délio; Pedrosa, Rui; Mitchell, GeoffreyCodium tomentosum hydroethanolic extract was obtained using a pilot solid–liquid extractor to validate the anti-browning functionality of the extract under industrial conditions. Fresh-cut apple slices were coated by immersion in: (1) a seaweed extract solution (0.5% w/v) and (2) a commercial coating, and the two sets of samples were compared with a control (immersion in water). Packaged samples were stored, un...
A pilot plant scale testing of the application of seaweed-based natural coating...
Augusto, Ana; Miranda, Andreia; Costa, Leonor; Pinheiro, Joaquina; Campos, Maria J.; Raimundo, Délio; Pedrosa, Rui; Mitchell, GeoffreyCodium tomentosum hydroethanolic extract was obtained using a pilot solid–liquid extractor to validate the anti-browning functionality of the extract under industrial conditions. Fresh-cut apple slices were coated by immersion in: (1) a seaweed extract solution (0.5% w/v) and (2) a commercial coating, and the two sets of samples were compared with a control (immersion in water). Packaged samples were stored, un...
Preservation of fresh-cut Rocha Pear using Codium tomentosum extract
Augusto, Ana; Miranda, Andreia; Crespo, Daniel; Campos, Maria J.; Raimundo, Délio; Pedrosa, Rui; Mitchell, Geoffrey; Niranjan, KeshavanRocha is a Portuguese pear cultivar with high economic importance in the Portuguese Western Region. Degradative processes following its manipulation can quickly lead to product rejection, especially when sold as a freshcut product. The efficacy of a marine-based edible coating to inhibit superficial browning development in freshcut Rocha pear slices was investigated over a storage period of 15 days. The aqueous...
Personalized reusable face masks with smart nano-assisted destruction of pathog...
De Sio, Luciano; Ding, Bin; Focsan, Monica; Kogermann, Karin; Pascoal-Faria, Paula; Petronela, Francesca; Mitchell, Geoffrey; Zussman, EyalThe Coronavirus disease 2019 (COVID-19) emergency has demonstrated that the utilization of face masks plays a critical role in limiting the outbreak. Healthcare professionals utilize masks all day long without replacing them very frequently, thus representing a source of crossinfection for patients and themselves. Nanotechnology is a powerful tool with the capability to produce nanomaterials with unique physico...
Polymer-Clay Nanocomposites: Exfoliation and Intercalation of Organophilic Mont...
Derdar, Hodhaifa; Meghabar, Rachid; Benachour, Mohamed; Mitchell, Geoffrey; Bachari, Khaldoun; Belbachir, Mohammed; Cherifi, ZakariaNanocomposites from Styrene-Limonene copolymers and Algerian organophilic-clay named Maghnite-CTA+ (Mag-CTA+), were prepared by in-situ polymerization using different amounts (2, 5, and 10% by weight) of clay and Azobisisobutyronitrile (AIBN) as a catalyst. The Mag-CTA+ is an organophilic silicate clay prepared through a direct exchange process, using Cetyltrimethylammonuim bromide (CTAB) in which it used as gr...
VIPEX: "VIPEX container lid"
Mendes, Ana; Elshehabey, Hillal; Mitchell, Geoffrey; Matias, João; Correia, Joaquim; Ferreira, Nelson; Alves, Nuno; Lopes, Nuno; Faria, PaulaVipex is a plastic injection company whose mission is to "Architect plastics industrialization for production". The company is a leading company that continues seeking to be on the cutting edge of plastic injection. In order to better understand all the multi-physics involved in plastic injection, Vipex presented the following challenge: "Vipex is producing a large container lid in conditions considered to be n...
VIPEX container lid
Mendes, Ana; Elshehabey, Hillal; Mitchell, Geoffrey; Matias, João; Correia, Joaquim; Ferreira, Nelson; Alves, Nuno; Lopes, Nuno; Faria, PaulaVipex is a plastic injection company whose mission is to "Architect plastics industrialization for production". The company is a leading company that continues seeking to be on the cutting edge of plastic injection. In order to better understand all the multi-physics involved in plastic injection, Vipex presented the following challenge: "Vipex is producing a large container lid in conditions considered to be n...
Green nanocomposites from rosin-limonene copolymer and algerian clay
Derdar, Hodhaifa; Mitchell, Geoffrey; Mahendra, Vidhura; Benachour, Mohamed; Haoue, Sara; Cherifi, Zakaria; Bachari, Khaldoun; Harrane, AmineGreen nanocomposites from rosin-limonene (Ros-Lim) copolymers based on Algerian organophilic-clay named Maghnite-CTA+ (Mag-CTA+) were prepared by in-situ polymerization using di erent amounts (1, 5 and 10% by weight) of Mag-CTA+ and azobisisobutyronitrile as a catalyst. The Mag-CTA+ is an organophilic montmorillonite silicate clay prepared through a direct exchange process; the clay was modified by ultrasonic-a...