通过超临界二氧化碳渗透的方法将成核剂分子输运到聚乳酸基体中,使其达到与传统挤出共混方法相比更为均匀、粒度更小的分散,从而进一步细化聚乳酸的球晶尺寸,改善其结晶行为.球晶尺寸的降低增加了球晶界面的结合强度,提高了聚乳酸的冲击强度.
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