A spectroscopic analysis of chain flexibility of poly(lactic acid)

被引：50

作者：

Yang, XZ

Kang, SH

Hsu, SL ^{[1
]}

Stidham, HD

Smith, PB

Leugers, A

机构：

[1] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

[2] Univ Massachusetts, Mat Res Sci & Engn Ctr, Amherst, MA 01003 USA

[3] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA

[4] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Polymer Phys Lab, Beijing 100080, Peoples R China

[5] Dow Chem Co, Analyt Sci, Midland, MI 48667 USA

来源：

MACROMOLECULES | 2001年 / 34卷 / 14期

关键词：

D O I：

10.1021/ma001969a

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A Raman analysis was conducted to examine the disordered structures of poly(lactic acid). Simulated spectra were obtained for an ensemble of chains generated by several rotational isomeric state models. Analysis of the differences between simulated and experimental spectra showed that the rotational isomeric state reported in earlier work leads to a chain that is much more flexible than the experimental data suggest. The Raman analysis suggests a chain dominated by tgt conformations in a 3(1) helix with a characteristic ratio of 12, consistent with other experimental data.

引用

页码：5037 / 5041

页数：5

共 37 条

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