Morphology and Thermal Properties of Compatibilized PA12/PP Blends with Boehmite Alumina Nanofiller Inclusions

Abstract

Boehmite alumina nanoparticles are added to PP‐g‐MAH‐compatibilized blends of PA 12 and PP to study the effects of nanoparticle loading in the resulting composites. WAXD and SEM data suggest that the nanoparticles enhanced the coalescence of PP. DSC, DMA, and TGA reveal that the final properties such as crystallization temperature, flexural storage modulus, thermal degradation temperature, etc., improve with increasing nanoparticle loading for blend/based composites. FTIR results show that the nanoparticles interfere with the interfacial activity at 5 wt% nanoparticle loading. All results are compared between the neat polymers and the compatibilized blend and show that despite a slight increase in dispersed‐phase domain size, all other properties improve with the addition of AlO(OH).

On the toughness of thermoplastic polymer nanocomposites as assessed by the essential work of fracture (EWF) approach

“…Results in Table 1 and 2 suggest that BA nanofiller only slightly affected the specific EWF parameters. This can be traced to the fact that BA does not influence the morphology of either amorphous or semicrystalline polymers markedly [5][6]10]. The scenario is somewhat different for MMT which is prone for the formations intercalated tactoids and may have a large impact on the morphology of semicrystalline systems [4].This may be the reason for the different changes in the yielding-related terms, i.e.…”

“…Accordingly, the following fillers were selected: fibrous multiwall carbon nanotube (MWCNT), platy-type graphene (GR), organophilic-modified montmorillonite (MMT) and quasispherical synthetic boehmite alumina (BA). Unlike MWCNT and GR, hold tightly together by Van der Waals forces, MMT [4], and especially BA [5][6] can be well dispersed in various thermoplastics via melt compounding.…”

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

“…Ogunniran studied the effect of the incorporation of BA in PP/PA 12 blends, finding that the degree of compatibility of the two polymers increased at high nanoparticle loading and BA significantly improved the thermal and mechanical properties [18,32]. In a previous work of our group the influence of BA content and surface treatment was investigated with respect to the morphology, crystallization behavior and mechanical properties of PP copolymer nanocomposites [33].…”

Polyamide blend-based nanocomposites: A review

“…Polymer blend nanocomposites may lead to a new type of high performance material that combines the advantages of polymer blends and the merits of polymer nanocomposites [10,11]. Consequently, two types of PA blend-based nanocomposite have been studied by numerous researchers, i.e., PA nanocomposites prepared by thermoplastic-thermoplastic blending and rubber (both functionalized and un-functionalized) modification approaches: (a) PA nanocomposites with a matrix composed of a blend of two thermoplastics (for example, PA6/PP/nanoclay [1,[12][13][14][15][16][17][18], PA6/polyimide/ organoclay [19]; PA6/thermotropic liquid crystalline polymer (TLCP)/organoclay [20]; Nylon 66/Nylon 6/organoclay [21]; PA6/acrylonitrile-butadiene-styrene (ABS)/multi-walled carbon nanotube (MWNT) [4,22]; PA6/low density polyethylene (LDPE)/nanoclay [23]; PA6/LDPE/organoclay [24]; polyamide 12 (PA12)/PP/boehmite alumina nanoparticles [25]; PA6/polymethyl methacrylate (PMMA)/functionalized single-walled carbon nanotube (SWCNT) [26]; PA6/polystyrene (PS)/nanoclay [27]; PA6/PS/nanosilica [28]) (b) PA nanocomposites toughened by a rubber or rubber-modified PA6 nanocomposites (for example, PA6/maleated styrene-ethylene butylenestyrene (SEBS-g-MA)/montmorillonite [29]; PA6/maleinized ethylene-propylene-rubber (mEPR)/nanoclay [30]; PA6/ethylene-co-propylene maleated rubber/organoclay [31]; PA6/silicone rubber/clay [32]; PA66/SEBS-g-MA/organoclay [33]; PA6/metallocene ethylene-polypropylene-diene copolymer/maleated ethylenepolypropylene-diene copolymer (EPDM-g-MA)/ nanoclay [34]; PA6/maleinized ethylene propylene-diene monomer (mEPDM)/nanoclay [35]; PA6/maleinized styrene-ethylene-butylenestyrene (mSEBS)/nanoclay [36][37][38]; PA6/ maleated ethylene-propylene-diene rubber (EPDM-g-MA)/organoclay …”