Characterization of spin-coated films of biodegradable poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) copolymers by two-dimensional correlation spectroscopy

被引：6
作者：
Ji, Ho [1 ]
Hwang, Hyonseok [1 ]
Kim, Seung Bin [2 ]
Noda, Isao [3 ]
Jung, Young Mee [1 ]
机构：
[1] Kangwon Natl Univ, Dept Chem, Chunchon 200701, South Korea
[2] POSTECH, Dept Chem, Pohang 790784, South Korea
[3] Procter & Gamble Co, W Chester, OH 45069 USA
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2008年 / 883卷 / 1-3期
关键词：
biodegradable copolymers; poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (P(HB-co-HHx)); thermal behavior; two-dimensional (2D) correlation spectroscopy; PCA2D correlation spectroscopy; eigenvalue manipulating transformation (EMT);
D O I：
10.1016/j.molstruc.2007.12.031
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Principal component analysis-based two-dimensional (PCA2D) correlation spectroscopy combined with the eigenvalue manipulating transformation (EMT) technique by lowering the power of a set of eigenvalues associated with the original data was applied to the temperature-dependent infrared-reflection absorption (IRRAS) spectra of spin-coated films of biodegradable P(HB-co-HHx) (HHx = 3.8, 7.2, and 10.0 mol%) copolymers. The PCA2D correlation spectra for P(HB-co-HHx) (HHx = 10.0 mol%) copolymer is completely different from those for P(HB-co-HHx) (HHx = 3.8 and 7.2 mol%) copolymers. In the synchronous PCA2D correlation spectra, the intensity changes of the bands at 1136 and 1282 cm(-1) changed greatly as HHx mol% of P(HB-co-HHx) copolymers increases. Furthermore, EMT technique accentuates the contribution of intensity of band enhanced the minor PCs, seems to preferentially emphasizes the behavior of amorphous components of during the heating process. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：167 / 172
页数：6
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