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用差示扫描量热法研究了聚左旋乳酸（ＰＬＬＡ）及其与羟基磷灰石、甲壳素和甲壳胺复合后的非等温结晶行为，分别用Ｍａｎｄｅｌｋｅｒｎ和Ｚｉａｂｉｃｋｉ两种处理方法获得了ＰＬＬＡ及其在复合体系中的非等温结晶动力学参数．结果表明：随冷却速率的增大，ＰＬＬＡ及其在复合体系中的结晶度迅速下降，Ａｖｒａｍｉ结晶指数ｎ值减小．复合组分可使ＰＬＬＡ的ｎ值增大，有利于ＰＬＬＡ结晶按三维方式发育生长．ＰＬＬＡ及其在复合体系中的非等温结晶速率常数Ｚｃ值（Ｍａｎ－ｄｅｌｋｅｒｎ方法）和动力学结晶能力参数Ｇ值（Ｚｉａｂｉｃｋｉ方法）均随冷却速率增大而增大，而比动力学结晶能力参数Ｇｃ值则与冷却速率无关，但受复合组分影响，其中羟基磷灰石使Ｇｃ值减小，而甲壳素和甲壳胺使Ｇｃ值增大．
The non-isothermal crystallization behavior of poly-L-lactic acid (PLLA) and its composite with hydroxyapatite, chitin and chitosan was studied by differential scanning calorimetry. PLLA and PLLA were obtained by Mandelkern and Ziabicki treatment respectively Non-isothermal crystallization kinetic parameters in composite system. The results show that with the increase of cooling rate, the crystallinity of PLLA and its composite system decreases rapidly and the value of Avrami crystallinity index decreases. The composite component can increase the n value of PLLA, which is conducive to the growth and development of PLLA crystals in three dimensions. PLLA and its non-isothermal crystallization rate constants Zc values (Man-delkern method) and kinetic crystallization ability parameters (Ziabicki method) in the composite system both increase with the cooling rate, while the specific kinetic crystallization ability parameters The Gc value is independent of the cooling rate, but is affected by the composite components, in which hydroxyapatite decreases the Gc value, while chitin and chitosan increase the Gc value.