NDLI: Thermal analysis of poly(desamino arylates)

Content Provider	IEEE Xplore Digital Library
Author	Recber, A.H. Jaffe, M. Collins, G.
Copyright Year	2004
Description	Author affiliation: Dept. of Biomedical Eng., New Jersey Inst. of Technol., Newark, NJ, USA (Recber, A.H.; Jaffe, M.; Collins, G.)
Abstract	The goal of this study is to better understand the thermal characteristics and molecular behavior of two poly(desaminotyrosyl arylates). TGA, DSC and TSPC studies were conducted on poly(12,10) and poly(2,2) after the samples were exposed to various conditions. The TGA of poly(12,10) shows low water uptake at 25C, higher water uptake at 80C. Water uptake for poly(2,2) at 25C is similar to poly(12,10) at 80C. The thermally stimulated polarization current (TSPC) results indicate a Tg for poly(2,2) at 80C and for poly(12,10) at 40C. DSC and TSPC studies suggest that poly(12,10) has two distinct modes of non-crystalline organization with a transition between these modes at about 60C. The mode above 60C has the higher water uptake. Annealing at 70C for 20 hours favors the high temperature mode. At room temperature, the material will relax to the low temperature mode. Previously published results indicate that these two modes of non-crystalline organization represent two different modes of hydrogen bonding.
Sponsorship	BEACON Tyco Healthcare Reebok BEI The Whitaker Found
Starting Page	128
Ending Page	129
File Size	138457
Page Count	2
File Format	PDF
ISBN	0780382854
DOI	10.1109/NEBC.2004.1300028
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-04-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polymers Biological materials Temperature distribution Heating Polarization Annealing Compression molding Cooling Probes In vivo
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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