采用原位聚合的方法制备了有机化处理过的纳米TiO2粒子质量分数分别为1 wt%、3 wt%、5 wt%和10 wt%的4种纳米TiO2/聚乳酸复合材料.SEM结果表明,当纳米TiO2粒子质量分数较低时,纳米TiO2在聚乳酸基体中呈现均匀稳定分散,而质量分数较高时则发生团聚.通过力学和热学等性能测试发现复合材料的最大热分解温度、玻璃化转变温度和力学性能相对于聚乳酸有较大幅度提高,其中纳米TiO2的质量分数为3 wt%时改善效果最明显,其最大热分解温度、玻璃化转变温度分别比聚乳酸提高了25.3℃和4.9℃,拉伸强度、断裂伸长率和弹性模量分别提高了83.6%、6.73%和129.4%.
参考文献
| [1] | Suprakas Sinha Ray,Pralay Maiti,Masami Okamoto,et al.New polylactide/layered silicate nanocomposites Ⅰ:Preparation,characterization,and properties[J].Maeromolecules,2002,35(8):3104-3110. |
| [2] | Mukul Agarwal,Kurt W Koelling,Jeffrey J Chalmers.Charactcrization of the degradation of polylactic acid polymer in a solid substrate environment[J].Biotechnology Progress,1998,14(3):517-526. |
| [3] | 沈烈,乔飞,张宁强,等.炭纤维增强羟基磷灰石/聚乳酸复合生物材料的力学性能和体外降解性能[J].复合材料学报,2007,24(5):61-65.Shen Lie,Qiao Fei,Zhang Yuqiang,et al.Mechanical properties and degradation properties in vitro of carbon fiber reinforced hydroxyapatite/polylactide composite[J].Acta Materiae Compositae Sinica,2007,24(5):61-65. |
| [4] | 沈一丁,赖小娟,王磊.聚乳酸/乙基纤维素复合膜的制备及其性能[J].复合材料学报,2007,24(3);40-44.Shen Yiding,Lai Xiaojuan,Wang Lei.Preparation and properties of poly(1actic acid)/ethyl cellulose composite films[J].Acta Materiae Compositae Siniea,2007,24(3):40-44. |
| [5] | 齐锦刚,曹丽云,王建中,等.碳纤维增强聚乳酸复合材料体外降解特性[J].复合材料学报,2005,22(2):34-37.Qi Jingang,Cao Liyun,Wang Jianzhong,et al.In vitro degradation characteristic of carbon fiber-reinforced polylactide(C/PLA)composite[J].Acta Materiae Compositae Sinica,2005,22(2):34-37. |
| [6] | Dresselhaus M S.Physics and chemistry of nanometer-scale materials:Symposium summary,looking outward and beyond[J].Materials Science and Engineering B,1993,19(1/2):192-197. |
| [7] | Dubois P,Zhang J X,Jerome R,et al.Macromolecular engineering of polylactones and polylactides 13:Synthesis of telechelic polyesters by coupling reactions[J].Polymer,1994,35(23):4998-5004. |
| [8] | 董铁权,张明艳,曾恕金.聚酰亚胺/二氧化硅/二氧化钛纳米杂化膜的制备与性能分析[J].绝缘材料,2005(6):7-10.Dong Tiequan,Zhang Mingyan,Zeng Shujin.Synthesis and characterization of polyimide/silica-titania nano-hybrid film[J].Insulating Materials,2005(6):7-10. |
| [9] | 周海鸥,史铁钧,王华林,等.聚乳酸/二氧化硅有机无机杂化材料的制备和表征[J].高分子材料科学与工程,2006,22(2):220-222,226.Zhou Haiou,Shi Tiejun,Wang Hualin,et al.Preparation and characterization of polylactide/SiO2 organic-inorganic hybrid material[J].Polymer Materials Science & Engineering,2006,22(2):220-222,226. |
| [10] | 康宏亮,陈成,庄宇刚,等.聚乳酸/蒙脱土纳米复合材料的结构和热性能[J].应用化学,2005,22(3):346-348.Kang Hongliang,Chen Cheng,Zhuang Yugang,et al.Structures and thermal properties of poly(1actic acid)/montmorillonite nanocomposites[J].Chinese Journal of Applied Chemistry,2005,2Z(3):346-348. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%