Research on compatibility and surface of high impact bio-based polyamide

Abstract

The super-tough bio-based nylon was prepared by melt extrusion. In order to improve the compatibility between bio-based nylon and elastomer, the elastomer POE was grafted with maleic anhydride. Scanning Electron Microscopy (SEM) and Thermogravimetric Analysis (TGA) were used to study the compatibility and micro-distribution between super-tough bio-based nylon and toughened elastomers. The results of mechanical strength experiments show that the 20% content of POE-g-MAH has the best toughening effect. After toughening, the toughness of the super-tough nylon was significantly improved. The notched impact strength was 88 kJ/m2 increasing by 1700%, which was in line with the industrial super-tough nylon. X-ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC) were used to study the crystallization behavior of bio-based PA56, and the effect of bio-based PA56 with high crystallinity on mechanical properties was analyzed from the microstructure.

Achieving anti‐moisture absorption and high thermal properties in bio‐based polyamide 56/F‐based heat‐resistant agent composites through crystal regulation

“…The bio-based polyamide 56 (PA56) polymers do not only exhibit excellent solvent resistance and high strength but are also easy to process and shape, has antistatic properties, excellent wear resistance, flame retardancy and high elasticity. [10][11][12][13][14][15][16] Therefore, it is usually used in automobile parts and filter membrane materials. [17][18][19] However, although pure bio-based PA56 has good comprehensive properties, its application is limited by its low thermal stability and high moisture absorption.…”

“…To date, some studies on improving the properties of bio-based PA56 composites have been reported, such as on the improvement of their mechanical properties and yellowing resistance. 10,21,22 There have been few reports on improving the heat resistance of bio-based PA56. N-phenyl maleic imide (NPMI) has a structure that features planar five-membered rings and rigid benzene rings, 23,24 therefore, adding it to the molecular chain of a polymer can increase the internal rotation resistance between the molecular chains and improve the heat resistance of the material.…”

EPDM‐g‐MAH toughened bio‐based polyamide 56 to prepare thermoplastic polyamide elastomer and the performance characterization

“…Adding some polar groups, such as maleic anhydride (MAH) and glycidyl methacrylate (GMA) can help improve the compatibility of elastomers and polyamides 38 . In recent years, POE‐g‐GMA and EPDM‐g‐MAH are considered to be two elastomers with better effects on polyamide modification 39,40,60–62 . Figure 1 shows the structure of ENB EPDM, which is often used in the experiment.…”

Synergistic effect of graphitic carbon nitride and ammonium polyphosphate on the enhanced flame retardant and smoke suppression properties of biobased polyamide 56

“…Biobased polyamide 56 (PA56) is a thermoplastic material used in many fields, including transportation, electronics, appliances, packaging, and aerospace applications due to its prominent properties such as great tensile strength, excellent thermostability, easy processing, and environmental friendliness. [ 1–6 ] PA56 is derived from pentamethylene diamine, which can be prepared by starch fermentation. Compared with traditional polyamide, the expansion in PA56 application reduces the dependence on petroleum resources.…”