| 纳米羟基磷灰石/聚乙丙交酯复合材料等温结晶动力学 |
| |
| 引用本文： | 蒋柳云,熊成东,白威,王连嵩,李玉宝. 纳米羟基磷灰石/聚乙丙交酯复合材料等温结晶动力学[J]. 高分子材料科学与工程, 2011, 0(3): 71-75 |
| |
| 作者姓名： | 蒋柳云 熊成东 白威 王连嵩 李玉宝 |
| |
| 作者单位： | 中国科学院成都有机化学研究所;四川大学分析测试中心纳米生物材料研究中心 |
| |
| 基金项目： | 中国科学院“西部之光”人才培养计划资助项目 |
| |
| 摘 要： | 采用溶液共混法将不同含量纳米羟基磷灰石(n-HA)充填于聚乙丙交酯(PLGA)制得n-HA/PLGA纳米复合材料,用差示扫描量热法(DSC)研究了该复合材料的等温结晶行为并采用Avrami方程处理等温结晶过程,计算结晶动力学参数.结果表明,该n-HA伊LGA复合材料体系结晶速度快慢的温度大部分符合110℃＞100℃＞1...
|
| 关 键 词： | 聚乙丙交酯 纳米羟基磷灰石 等温结晶 |
Kinetics of Isothermal Crystallization for n-HA/PLGA Composites |
| |
| Liuyun Jiang,Chengdong Xiong,Wei Bai,Liansong Wang,Yubao Li. Kinetics of Isothermal Crystallization for n-HA/PLGA Composites[J]. Polymer Materials Science & Engineering, 2011, 0(3): 71-75 |
| |
| Authors: | Liuyun Jiang Chengdong Xiong Wei Bai Liansong Wang Yubao Li |
| |
| Affiliation: | 1.Chengdu Institute of Organic Chemistry,China Academy of Sciences,Chengdu 610041,China;2.Research Center for Nano-Biomaterials, Analytical and Testing Center,Sichuan University,Chengdu 610064,China) |
| |
| Abstract: | Nano-hydroxyapatite(HA)/ poly-lactic-co-glycolic acid(PLGA) composites with different n-HA contents were prepared by co-solution method.The kinetics of isothermal crystallization of n-HA/PLGA composites have been investigated by differential scanning calorimetry(DSC).The Avrami equation has been used to analyze isothermal crystallization,and the correlative kinetics parameter values were given.The results show that crystallization temperature(Tc) is one of important factors,and the crystallization rate is accord with the relational expression of 110 ℃>100 ℃>120 ℃>90 ℃>130 ℃.On the other hand,in the same Tc,the presence of n-HA acts as nucleate and enhances greatly the crystallization rate of PLGA,and the parameter value of the half-time for crystallization(t1/2) is obvious shortened.Moreover,the crystallization rate is by and large based on the formula of 3% n-HA > 10% n-HA > 1% n-HA >5% n-HA>PLGA. |
| |
| Keywords: | poly-lactic-co-glycolic acid nano-hydroxyapatite isothermal crystallization |
| 本文献已被 CNKI 等数据库收录！ |
|
