Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 89: Issue 3
Thermoanalytical behaviour of some coating free films
Authors:
G. Regdon University of Szeged Department of Pharmaceutical Technology Eötvös St. 6. 6720 Szeged Hungary

Search for other papers by G. Regdon in
Current site
Google Scholar
PubMed Close
,
A. Kósa University of Szeged Department of Pharmaceutical Technology Eötvös St. 6. 6720 Szeged Hungary

Search for other papers by A. Kósa in
Current site
Google Scholar
PubMed Close
,
I. Erős University of Szeged Department of Pharmaceutical Technology Eötvös St. 6. 6720 Szeged Hungary

Search for other papers by I. Erős in
Current site
Google Scholar
PubMed Close
, and
K. Pintye-Hódi University of Szeged Department of Pharmaceutical Technology Eötvös St. 6. 6720 Szeged Hungary

Search for other papers by K. Pintye-Hódi in
Current site
Google Scholar
PubMed Close
Pages:
793–797
Online Publication Date:
16 Aug 2006
Publication Date:
01 Sep 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7566-6
Keywords:
carrageenan; DSC; Eudragit NE 30 D; free films; LustreClear; methacrylate copolymer; microcrystalline cellulose; storage conditions
Restricted access

Abstract  

Differential scanning calorimetry (DSC) was used in the investigation of the behaviour of coating free films. The films were produced from two film-forming polymers which are chemically different but equally used for producing controlled-release dosage forms: Eudragit NE 30 D (synthetically produced polymethacrylate copolymer) and LustreClear product (mixture containing natural and semi-synthetic components: microcrystalline cellulose, hydroxy-ethyl cellulose, carrageenan and polyethylene glycol). During their comparative analysis the characteristic parameters of the DSC curves obtained with dynamic measurement method were used and their changes as a function of storage conditions and storage time were observed. It was found that the thermoanalytical behaviour of the examined methacrylate-based Eudragit NE and cellulose-based LustreClear films was different. The specific enthalpy change of Eudragit NE fresh films was very little, but it increased considerably during storage. The specific enthalpy change of LustreClear films was much greater but its value shows only a slight further increase during storage. The results obtained help to choose the proper temperature for coating and drying.

  • 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
Aug 2024 11 0 0
Sep 2024 17 0 0
Oct 2024 47 0 0
Nov 2024 14 0 0
Dec 2024 9 0 0
Jan 2025 2 0 0
Feb 2025 0 0 0