Effect of plasticizers on the barrier and mechanical
Three different behaviours can be distinguished: a flat fracture surface, characteristic of brittle materials, on pure chitosan; an inhomogeneous, with intermediate roughness surface on chitosan plasticized with 30% glycerol or 10% IL; and a rough surface in the case of chitosan plasticized with 30% IL, characteristic of very ductile materials.
Plasticizer impact on clay dispersion and thermal
The effects of plasticizer and clay type on morphology and thermal properties of these bio-based nanomaterials were investigated. The clay dispersion in the lms was analyzed by X-ray...
Effect of processing conditions on the mechanical and thermal
Polypropylene montmorillonite (PP–MMT) nanocomposites have been prepared by using a co-rotating twin screw extruder. The effects of processing conditions at fixed clay content (5 wt%) on polymer properties were investigated by means of transmission electron microscopy (TEM), flexural modulus, izod impact, dynamic mechanical analysis (DMA), and differential scanning calorimetry (DSC).
Properties of plasticized cellulose acetate/clay nano
The effects of plasticizer and clay type on morphology and thermal properties of these bio-based nanomaterials were investigated. The clay dispersion in the lms was analyzed by X-ray diraction
Influence of Processing Conditions on Morphological, Thermal
The effect of processing conditions (casting and extrusion) and plasticization on the disintegrability in compost of organically modified clay poly(3-hydroxybutyrate) nanocomposites was studied. Tributylhexadecylphosphonium bromide (TBHP) was used as organic modifier. As revealed by WAXS and TEM observations, intercalated nanobiocomposites with clay stacks and some individually dispersed
- Does clay affect the performance of biomimetic composites?
- It is clear that the clay plays the major role in determining the barrier properties of biomimetic composites; even the addition of plasticizers that strongly decrease the barrier performance of the pure polymer (cf. Table 2) does not hinder the performance of the composites.
- Is plasticization efficiency associated with the barrier properties of plasticized composites?
- It is interesting to note that the barrier properties of the plasticized composites can be associated neither with the plasticization efficiency as seen for the polymer (cf. IL30_M versus Gly30_M), nor with the amount of plasticizer (cf. IL30_M versus IL10_M).
- Can plasticizer and nanoclay improve the mechanical properties of PLA?
- Eight nanocomposite films were prepared and their tensile properties, MC, WVP, swelling, stability, optical properties, FTIR spectra, XRD, and TGA were investigated. The results showed that the incorporation of both plasticizer and nanoclay effectively improved the mechanical properties of PLA.
- Can Plasticizers improve the flexibility of biomimetic composites?
- Regarding barrier properties, no difference was observed between the original and the plasticized composites. This study thus shows that the incorporation of plasticizers is an effective method to improve the flexibility of biomimetic composites without deleterious effect on their excellent barrier properties.
- What is the XRD pattern of clay and PLA nanocomposite films?
- The XRD pattern of the clays and PLA nanocomposite films was obtained to investigate the crystallinity by a Rigaku, MiniFlex 120 II-C diffractometer with Cu-Kα radiation (λ = 1.5401°A) at the current of 40 mA and voltage of 40 kV.
- Do plasticized biomimetic nanocomposites elongate better than chitosan films?
- This increased effectiveness was also seen for plasticized biomimetic nanocomposites of chitosan and clay. Analogous to the plasticized chitosan films, composites plasticized with ionic liquid displayed a higher elongation than the base one, even though the total amount of plasticizer in the formulation was small.
