Twin-Screw Extruder

The immiscible bio-plastic blend of poly(lactic acid) (PLA) and polyamide11 (PA11 or Nylon11) was compatibilized, using a catalyzed the ester-amide interchange chemical reaction during reactive extru-sion. The effects of screw configuration on mixing and reaction optimization were explored. It was found that effective mixing and minimized degradation were achieved when kneading elements were installed only near the die end of the extruder rather than near the beginning of the melt section. However, significant degradation of PLA could not be avoided during processing, which led to a decrease in mechanical strength of blend. To prevent the molecular weight reduction, tris(nonylphenyl) phosphite (TNPP) stabilizer was introduced to improve the thermal stability of PLA matrix. Improvement to both tensile strength and elongation were achieved in the resulting PLA/PA11/TsOH/TNPP blend.

As of late, normal fiber built up composites have gotten a lot of consideration due for their many potential benefits like light weight, non-grating, non-poisonous, minimal expense and biodegradable properties. Normal fiber built up composites has numerous applications as a class of underlying materials as a result of the instance of manufacture, somewhat minimal expense of creation. Albeit the engineered strands like glass, carbon have high explicit strength, their fields of utilization are restricted as a result of their inborn greater expense of creation. Regular strands built up composite material can be prepared by direct expulsion pressure forming. In this interaction the impact of hotness on the lattice is extremely high, thusly warm corruption is significant concern. The descriptive word of the undertaking where is to investigation of compound treatment on sisal filaments and their co-connection with the last mechanical properties of formed part.