NDLI: Effect of surface interactions on the glass transition temperature behavior of amorphous polystyrene

Content Provider	Springer Nature Link
Author	Ding, Wei Sanchez, Rachel F. Ruggles, Meghan R. Bernazzani, Paul
Copyright Year	2013
Abstract	The glass transition temperatures (T $_{g}$) of nanosized thin polystyrene (PS) films were determined using FTIR (or, more specifically, the absorbance peak at 797 cm$^{−1}$). This novel method was used to verify the presence of surface interactions between polymer and substrate. As surface interactions may lead to changes in T $_{g}$, various amounts of nanoparticles of TiO$_{2}$ and of ZnSe were uniformly deposited on the surface of free-standing PS film to simulate increases in surface interactions. FTIR spectra of thin PS films coated with various amounts of these nanoparticles were recorded as a function of temperature, and the T $_{g}$ values obtained using this method were compared to results obtained using conventional differential scanning calorimetry (DSC). The addition of TiO$_{2}$ nanoparticles leads to an increase in T $_{g}$, while the addition of ZnSe depresses the glass transition temperature. Both effects are linear with respect to the amount of nanoparticles. These results support the argument that increasing surface interactions leads to changes in chain mobility, as determined from variations in T $_{g}$.
Starting Page	1
Ending Page	8
Page Count	8
File Format	PDF
ISSN	10229760
Journal	Journal of Polymer Research
Volume Number	20
Issue Number	6
e-ISSN	15728935
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-05-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Glass transition temperature Nanoparticles Surface interactions Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Materials Chemistry Polymers and Plastics

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