Solid State 13C NMR Study of Modified Polyhydroxybutyrate

被引：2

作者：

Vrabel, P. ^{[1
]}

Hronsky, V. ^{[1
]}

Fricova, O. ^{[1
]}

Kovalakova, M. ^{[1
]}

Chodak, I. ^{[2
]}

Alexy, P. ^{[3
]}

机构：

[1] Tech Univ Kosice, Dept Phys, Kosice 04200, Slovakia

[2] Slovak Acad Sci, Inst Polymer, Bratislava 84541, Slovakia

[3] Slovak Univ Technol Bratislava, Inst Polymer Mat, Bratislava 81237, Slovakia

来源：

ACTA PHYSICA POLONICA A | 2014年 / 126卷 / 01期

关键词：

D O I：

10.12693/APhysPolA.126.419

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Structural changes in polyhydroxybutyrate (PHB) brought about by addition of chain extender and/or plasticizer were studied using C-13 MAS NMR spectra, which were measured using the direct polarization technique at 30 and 98 degrees C. Four resonances associated with the CO, CH, CH2 and CH3 groups of PHB were observed in the spectra. The CH3 resonance appearing at 98 C shows splitting into two lines related to the crystalline and amorphous regions. Analysis of the CH3 resonances made it possible to estimate the influence of applied modifications on crystallinity and distribution of conformations in amorphous and crystalline domains of PHB samples.

引用

页码：419 / 420

页数：2

共 3 条

[1]

Alexy P., 2011, CHEM LISTY, V105, P241

[2] High-resolution solid-state 13C NMR studies of poly[(R)-3-hydroxybutyric] acid [J].