将分别添加微量金属氧化物CaO、MgO、ZnO的生物可降解聚酯聚乳酸(PLLA)薄膜放入陕西当地土壤的提取液中进行微生物兹化反应,以研究薄膜中金属氧化物对PLLA降解性能的影响,并通过红外光谱中官能团吸收强度的变化,表征了其降解前后的化学结构.研究结果表明:添加金属氧化物的PLLA在陕西当地土壤的提取液中能够降解,添加微量的CaO、MgO加快了PLLA的降解速度,而添加ZnO对PLLA的降解没有太大影响.用显微镜对降解前后膜的观察发现:纯PLLA薄膜降解后的膜表面变得明显粗糙,有显著的微生物侵蚀痕迹;而添加微量金属氧化物的薄膜中,由于均匀分散金属氧化物的存在,导致降解后膜表面出现了更大的缺陷和侵蚀痕迹.
参考文献
| [1] | Srivastava Rajiv K,Albertsson Ann-Christine.Microblock copolymers as a result of transesterification catalyzing behavior of lipase CA in sequential ROP[J].Macromolecules,2007,40(13):4464-4469. |
| [2] | Yuka Kobori,Tadahisa Iwata,Yoshiharu Doi,Hideki Abe.Synthesis,solid-state structure,and surface properties of endcapped poly(L-lactide)[J].Biomacromolecules,2004,5(2):530-536. |
| [3] | Makoto Kato,Kazunobu Toshima,Shuichi Matsumura.Preparation of aliphatic poly(thioester) by the lipase-catalyzed direct polycondensation of 11-mercaptoundecanoic acid[J].Biomacromolecules,2005,6(4):2275-2280. |
| [4] | 张敏,韩伟,李文清,王蕾,邱建辉.乳酸、己内酯对聚丁二酸丁二醇酯共聚改性的合成研究[J].现代化工,2007,27(2):39-43.Zhang Min,Hart WCI,Li Wenqing,Wang Lei,Qiu Jinahui.Synthesis of poly(butylenes-succinate) with e-calarolacton and lactic acid[J].Modern Chemical Industry,2007,27(2):39-43. |
| [5] | 张敏,王蕾,韩伟,李文清,邱建辉.P(BS-co-DGA)共聚物的合成和降解性的研究[J].塑料,2007,36(3):50-53.Zhang Min,Wang Lei,Han Wei,Li Wenqing,Qiu Jinahui.Synthesis and biodegradability of P (BS-co-DGA)[J].Plastics,2007,36(3):50-53. |
| [6] | 张敏,王晓霞,刘保健,刘晓霞,王蕾,邱建辉.生物可降解聚酯在陕西土壤中降解行为的研究[J].高分子材料科学与工程,2008,24(1),91-93.Zhang Min,Wang Xiaoxia,Liu Baojian,Liu Xiaoxia,Wang Lei,Qiu Janhui.Study on biodegradable behavior of polyesters in the soil of Shannxi local[J].Polymer Materials Science & Engineering,2008,24(1),91-93. |
| [7] | Qiu Jianhui,Nagaoka H,Zhang Min.Preparation of Tofu refuse-biodegradable polymer composites and studies on their mechanical properties[J].Information,2007,10 (4):471-479. |
| [8] | Zhang Min,Wang Xiaoxia,Liu Baojian,Liu Xiaoxia,Han Wei.The influence of metal-oxide on the degradation of the polyesters[C]// 16th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XVI) & IUPAC 2nd International Symposium on Novel Materials and Synthesis (NMS-Ⅱ).Lanzhou:Northwest Normal University Press,2006:334. |
| [9] | Sivalingam G,Chattopadhyay Sujay,Madras Giridhar.Solvent effects on the lipase catalyzed biodegradation of poly (ε-caprolactone) in solution[J].Polymer Degradation and Stability,2003,79(3):413-418. |
| [10] | Saad Gamal R,Seliger Hartmut.Biodegradable copolymers based on bacterial poly ((R)-3-hydroxybutyrate):Thermal and mechanical properties and biodegradation behavior[J].Polymer Degradation and Stability,2004,83(1):101-110. |
| [11] | Hironobu Fukuzaki,Masaru Yoshida,Masaharu Asano,et al.Synthesis of copoly(D,L-lactic acid) with relatively low molecular weight and in vitro degradation[J].European Polymer Journal,1989,25(10):1019-1026. |
| [12] | Liu Lijian,Li Suming,Garreau Henri,et al.Selective enzymatic degradations of poly (L-lactide) and poly (ε-eaprolactone) blend films[J].Biomacromolecules,2000,1(3):350-359. |
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%