Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 70: Issue 3
TG-FTIR studies on lignin-based polycaprolactones
Authors:
S. Hirose National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5 Tsukuba, Ibaraki 305-8565 Japan Tsukuba Central 5 Tsukuba, Ibaraki 305-8565 Japan

Search for other papers by S. Hirose in
Current site
Google Scholar
PubMed Close
,
T. Hatakeyama Otsuma Women's University 12 Sanban-cho Chiyoda-ku, Tokyo 102-8357 Japan 12 Sanban-cho Chiyoda-ku, Tokyo 102-8357 Japan

Search for other papers by T. Hatakeyama in
Current site
Google Scholar
PubMed Close
,
Y. Izuta Fukui University of Technology 3-6-1 Gakuen Fukui-City, Fukui 910-8505 Japan 3-6-1 Gakuen Fukui-City, Fukui 910-8505 Japan

Search for other papers by Y. Izuta in
Current site
Google Scholar
PubMed Close
, and
H. Hatakeyama Fukui University of Technology 3-6-1 Gakuen Fukui-City, Fukui 910-8505 Japan 3-6-1 Gakuen Fukui-City, Fukui 910-8505 Japan

Search for other papers by H. Hatakeyama in
Current site
Google Scholar
PubMed Close
Pages:
853–860
Online Publication Date:
03 Nov 2004
Publication Date:
01 Oct 2002
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1022212421525
Restricted access

Abstract  

Thermal degradation behaviour of alcoholysis lignin-based polycaprolactones (ALPCL's) with various molar ratios of β-caprolactone monomer to each hydroxyl group of lignin (CL/OH ratios) was studied by TG-FTIR. The temperature was varied from 20 to 800C. Thermal degradation temperatures (Td's) of alcoholysis lignin (AL) and ALPCL's were determined using TG curves. Td increased with increasing CL/OH ratio, suggesting that AL becomes thermally stable after the derivatization with PCL chains. Mass residue (MR) at 500C was also determined using TG curves. MR values decreased with increasing CL/OH ratios. The evolved gases formed by thermal degradation of ALPCL's at various temperatures were simultaneously analyzed by FTIR. The main peaks observed for the samples are as follows: wavenumber (assignment): 1160 cm-1 (vC-O-), 1260 cm-1(-C(=O)-O-C-), 1517 and 1617 cm-1 (vC=C), 1770 cm-1 (vC=O), 2345 cm-1 (vCO2), 2945 cm-1 (vC-H) and 3700 cm-1 (vOH). It was found that the peak intensities for C=O, CH, C-O-C, OH peaks, which were observed for evolved gases at 430C, increased with increasing CL/OH ratios, suggesting that the evolved gases at 430C are mainly formed by thermal degradation of PCL chains in ALPCL's.

  • Collapse
  • Expand
Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jun 2023 0 0 0
Jul 2023 0 0 0
Aug 2023 3 0 0
Sep 2023 0 0 0
Oct 2023 2 0 0
Nov 2023 5 1 0
Dec 2023 4 1 0