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 extrusion. 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.

聚乳酸（PLA）和聚酰胺11（PA11或尼龙11）的不溶混的生物塑料共混物，通过在反应挤出过程中催化的酯-酰胺交换化学反应而相容。探索了螺杆配置对混合和反应优化的影响。已经发现，当将捏合元件仅安装在挤出机的模头附近而不是在熔体段的开始附近时，可以实现有效的混合并将降解降到最低。但是，在加工过程中无法避免PLA的明显降解，这会导致共混物的机械强度降低。为了防止分子量降低，引入了三（壬基苯基）亚磷酸三（TNPP）稳定剂以提高PLA基质的热稳定性。