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Type: Journal article
Title: Molecular level stabilization of poly(ethylene terephthalate) with nanostructured open cage trisilanolisobutyl-POSS
Author: Ladasiu Ciolacu, F.
Roy Choudhury, N.
Dutta, N.
Kosior, E.
Citation: Macromolecules, 2007; 40(2):265-272
Publisher: American Chemical Society
Issue Date: 2007
ISSN: 0024-9297
Statement of
Flaviu Calin Ladasiu Ciolacu, Namita Roy Choudhury, Naba Dutta, and Edward Kosior
Abstract: A nanostructured organometallic macromer trisilanolisobutyl-POSS (T-POSS) was used to prevent discoloration of poly(ethylene terephthalate) (PET) and to achieve molecular level stabilization during melt processing. The resultant material was investigated using thermal analysis and oscillatory rheology. The interaction between the PET and the nanostructured additive was investigated using X-ray photoelectron spectroscopy (XPS) and matrix-assisted laser desorption/mass spectrometry (MALDI-MS). Thermal studies show that the additive increases the thermooxidative stability and consequently prevents discoloration of the material. Rheological data demonstrate increased shear storage modulus with the addition of T-POSS to PET, indicating better melt elasticity and a broader window of processability of the material. The XPS and MALDI-MS results confirm that the stabilization is achieved by covalent interaction and branching of the nanostructured additive to PET.
Description: Published on Web 12/14/2006
Rights: © 2007 American Chemical Society
RMID: 0030072620
DOI: 10.1021/ma061060d
Appears in Collections:Chemical Engineering publications

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