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中文摘要：
通过熔融结晶并结合退火处理方法得到多晶结构的聚己二酸丁二酯（PBA）及具有不同热历史的热力学稳定的α晶型,采用广角X射线衍射仪（WAXD）、原子力显微镜（AFM）和差示扫描量热仪（DSC）研究了PBA的多晶结构、晶体尺寸和结晶形貌,跟踪了退火处理PBA的生物降解行为.结果表明,分子链在相同晶格排列中围绕c轴空间取向的不同是决定多晶PBA降解速率差别的根本因素.
英文摘要：
On the basis of characteristic polymorphic crystals of poly（butylene adipate）（PBA）,the PBA films with α crystal structure were prepared by melt crystallization and annealing treatment.The polymorphic crystal structure,crystal size and crystalline morphology of PBA α crystals with different thermal history were studied by wide angle X-ray diffraction（WAXD）,atomic force microscope（AFM） and differential scanning calorimeter（DSC）.The biodegradation behavior of PBA α crystals from different thermal treatments was investigated by following the mass loss with time.The results indicate that the difference of PBA α crystals in spatial orientation of polymer chains in the same crystal lattice due to the different thermal history is the essential reason which results in the different biodegradation rates.
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