Preparation and characterization of nylon 11/organoclay nanocomposites

Efficient one-step melt-compounding of copolyetheramide/pristine clay nanocomposites using water-injection as intercalating/exfoliating aid

“…This result is confirmed in the literature [3,5] and explained by the fact that minerals are modified by exchanging initial sodium ions with bigger alkylammoniums in order to change the clay polarity and pre-exfoliate the layers. The difference between the two non-modified clays may be explained by the different origins of the minerals and by the moisture content (due to the structural difference of RawMMT).…”

“…Mechanical properties of this interphase strongly differ from the bulk polymer [67]. Increasing the NaMMT content improves the interphase volume and its contribution to the mechanical behavior of the whole material, as usually reported for intercalated/exfoliated nanocomposites [2,3,5,70]. Injected water improves the dispersion state and the volume of polymer/clay interphase increases as evidenced by the structural analysis.…”

“…Indeed, some authors reported that T g of PA12/OMMT nanocomposites is independent of the clay content [5] because the mobility restriction is notably counterbalanced by the water plasticization. Moreover, a decrease of the nanocomposite glass transition, justified by a plasticizing effect attributed to the alkylammonium ions modifying the clay, is also reported when the mineral content increases [3]. Besides, mechanism of polyamide nanocomposites plasticization is the same as for the unfilled polyamide [66,67].…”

“…Henceforth, different kind of polyamides (PA) or polyamide copolymers have been identified as suitable matrices for the elaboration of polymer/clay nanocomposites [2][3][4][5], bearing favorable polar amide functions along the backbone. Most of the studies dealing with PA/clay nanocomposites recourse to organically modified clay to successfully disperse the nanoplatelets.…”

Thermal and Nanoindentation Behaviours of Layered Silicate Reinforced Recycled GF-12 Nanocomposites

“…In this context, layered silicate has shown remarkable performance as an additive to polymers, which has led to the enhancement of its mechanical and thermal properties, due to the capacity of the silicate to separate or break down into individual layers (Djebara, El Moumen, Kanit, Madani, & Imad, 2016;Kotal & Bhowmick, 2015;Liu, Ping Lim, Chauhari Tjiu, Pramoda, & Chen, 2003). Many investigators have investigated the production of new nanocomposite materials with improved mechanical and thermal properties (Djebara et al, 2016;Hu et al, 2006;Liu et al, 2003;Yu, Zhao, Chen, Juay, & Yong, 2007;Zeng, Yu, Lu, & Paul, 2005). For example, Liu et al (Liu et al, 2003) studied the mechanics of Nylon 11/organoclay nanocomposites containing (0, 1, 2, 4 and 8 wt.%) organoclay.…”