Molecular weight dependence of the poly(L-lactide)/poly(D-lactide) stereocomplex at the air-water interface
文献类型：期刊论文
| 作者 | Duan, Yongxin; Liu, Jing; Sato, Harumi; Zhang, Jianming; Tsuji, Hideto; Ozaki, Yukihiro; Yan, Shouke |
| 刊名 | BIOMACROMOLECULES
 |
| 出版日期 | 2006-10-09 |
| 卷号 | 7期号:10页码:2728-2735 |
| ISSN号 | 1525-7797 |
| DOI | 10.1021/bm060043t |
| 英文摘要 | The molecular weight dependence of poly(L-lactide)/poly(D-lactide) (PLLA/PDLA) stereocomplex behavior at the air-water interface was studied by surface pressure-area (pi-A) isotherms and atomic force microscopy (AFM). It was found that the compression-induced sterecomplexation of a PDLA/PLLA equimolar blend with high molecular weight (M-w = 1 x 10(6) and 9.8 x 10(5), respectively) could occur at the air-water interface. This result is in marked contrast with the stereocomplexation of PDLA/PLLA blends in the bulk from the melt or in solutions, where the homocrystallites of either PLLA or PDLA rather than stereocomplex crystallites will be formed preferentially when the molecular weights of both polymers are higher than 1 x 10(5). Unexpectedly, the Langmuir-Blodgett behavior of the PDLA/PLLA blend with lower molecular weight (M-w = 4 x 10(3) and 3.2 x 10(3), respectively), which should be favored in the stereocomplex, was distinct from that of other higher molecular weight blends. AFM images clearly disclosed for the first time the morphological changes of the equimolar blends of PLLA and PDLA at the air-water interface induced by increasing the surface pressure of the monolayer. Of particular note, the bilayer mechanism for the plateau in the isotherm was directly verified by the AFM height images. |
| 语种 | 英语 |
| WOS记录号 | WOS:000241106600006 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/58793]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ozaki, Yukihiro |
| 作者单位 | 1.Kwansei Gakuin Univ, Res Ctr Environm Friendly Polymers, Gakuen, Sanda 6691337, Japan 2.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China 3.Kwansei Gakuin Univ, Sch Sci, Dept Chem, Gakuen, Sanda 6691337, Japan 4.Toyohashi Univ Technol, Fac Engn, Dept Ecol Engn, Toyohashi, Aichi 4418580, Japan |
| 推荐引用方式 GB/T 7714 | Duan, Yongxin,Liu, Jing,Sato, Harumi,et al. Molecular weight dependence of the poly(L-lactide)/poly(D-lactide) stereocomplex at the air-water interface[J]. BIOMACROMOLECULES,2006,7(10):2728-2735. |
| APA | Duan, Yongxin.,Liu, Jing.,Sato, Harumi.,Zhang, Jianming.,Tsuji, Hideto.,...&Yan, Shouke.(2006).Molecular weight dependence of the poly(L-lactide)/poly(D-lactide) stereocomplex at the air-water interface.BIOMACROMOLECULES,7(10),2728-2735. |
| MLA | Duan, Yongxin,et al."Molecular weight dependence of the poly(L-lactide)/poly(D-lactide) stereocomplex at the air-water interface".BIOMACROMOLECULES 7.10(2006):2728-2735. |
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来源：化学研究所
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