Determination of plasticizers efciency for nylon by
efciency of several plasticizers (see Table 1) for a polyamide, the random copolymer Nylon 66/6, and to compare the calculated results to the experimental ones obtained in our laboratory [13]. Various parameters which are connected to plasticizer efciency were calculated: Solubility parameters of the pure nylon, the Polym. Bull.
Determination of plasticizers efficiency for nylon by
Plasticizers efficiency was determined by calculating cohesive energy density, solubility parameters, free volume and interaction intensities of pristine nylon, and the nylon–plasticizer blends.
Determination of plasticizers efficiency for nylon by
Four plasticizers were studied: glycerin mono stearate, benzene sulfonamide, methyl 4-hydroxybenzoate (M4HB), and diethylhexyl phthalate. Plasticizers efficiency was determined by calculating...
Toward computational design of efficient plasticizers for nylon
The goal of this study was to estimate plasticizers efficiency in plasticizing Nylon 66/6 copolymer (molar ratio 80/20, respectively) using computational tools and to compare the calculated
Plasticizers: Types, Uses, Classification, Selection & Regulation
Plasticizers increase the flow and thermoplasticity of a polymer by decreasing the viscosity of the polymer melt, the glass transition temperature (Tg), the melting temperature (Tm) and the elastic modulus of the finished product without altering the fundamental chemical character of the plasticized material.
- What is the efficiency of the plasticizers determined by?
- Plasticizers efficiency was determined by calculating cohesive energy density, solubility parameters, free volume and interaction intensities of pristine nylon, and the nylon–plasticizer blends. Four plasticizers were studied: glycerin mono stearate, benzene sulfonamide, methyl 4-hydroxybenzoate (M4HB), and diethylhexyl phthalate.
- What are the four plasticizers studied?
- Four plasticizers were studied: glycerin mono stearate, benzene sulfonamide, methyl 4-hydroxybenzoate (M4HB), and diethylhexyl phthalate. Plasticizers efficiency was determined by calculating cohesive energy density, solubility parameters, free volume and interaction intensities of pristine nylon, and the nylon–plasticizer blends.
- Why do rigid plasticizers have similar solubility parameters to nylon?
- The rigid plasticizers, namely, M4HB and BSA, have solubility parameter values of 24.6 and 22.6 [J/cm³] 0.5, respectively, which are very close to that of the nylon (23.2 [J/cm³] 0.5). This might be attributed to the ability of those molecules to participate in hydrogen bonding, similar to nylon.
- Are rigid plasticizers similar to nylon?
- The rigid plasticizers, namely M4HB and BSA, have solubility parameter values of 24.6 and 22.6 J/cm³ 0.5, respectively, which are very close to that of nylon (23.2 J/cm³ 0.5). This similarity might be attributed to their ability to participate in hydrogen bonding, similar to nylon.
- Which plasticizer causes the largest changes in free volume?
- It was found that the efficiency of the plasticizers increases with the degree of interaction intensity between the plasticizer and polymer chains and that M4HB molecules cause the largest changes in free volume. This finding correlates with the experimental results, based on reduction of polymer glass transition temperature ( T g ).
- Why are plasticizers added to polyamides?
- Some applications require higher flexibility and workability of the polyamides, therefore plasticizers are added to ease compounding and processing procedures and produce the desired product properties. Polyamides are semicrystalline polymers useful in a wide range of applications in the plastics industry.
