scholarly journals Determination of glass transition temperature and surface properties of novel chalcone modified poly (styrene) based polymer

2019 ◽  
Vol 23 (Suppl. 1) ◽  
pp. 193-202
Author(s):  
Aysegul Adiguzel ◽  
Fatih Cakar ◽  
Bahire Senkal ◽  
Ozlem Cankurtaran ◽  
Yesim Gursel ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Surface Properties ◽  
The Novel ◽  
Scanning Calorimetry ◽  
Chromatography Method ◽  
Kd Values ◽  
The One

The novel chalcone modified poly (styrene) based polymer (PVBC-DMAC) has been prepared and characterized. By using the inverse gas chromatography method, we determined glass transition temperature and surface properties of PVBC-DMAC. The obtained glass transition temperature, Tg, is a good agree with the one obtained by differential scanning calorimetry. Also considering some isomeric alcohol and acetate solvents in the temperature range from 303.2 K to 353.2 K, we investigated the polymer selectivity. The parameters KA(acidic) and KD(basic) of the PVBC-DMAC surface were calculated. The obtained KA, KD values reflected that PVBC-DMAC surface has a basic character.

Determination of ultra-low glass transition temperature via differential scanning calorimetry

2013 ◽  
Vol 32 (8) ◽  
pp. 1368-1372 ◽  
Author(s):  
Lidong Feng ◽  
Xinchao Bian ◽  
Gao Li ◽  
Zhiming Chen ◽  
Yi Cui ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Scanning Calorimetry

Brillouin Light Scattering Determination of the Glass Transition in Thin, Freely-Standing Poly(styrene) Films

1995 ◽  
Vol 407 ◽  
Author(s):  
J. A. Forrest ◽  
K. Dalnoki-Veress ◽  
J. R. Dutcher ◽  
A. C. Rowat ◽  
J. R. Stevens
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Light Scattering ◽  
Guided Waves ◽  
Brillouin Light Scattering ◽  
Scanning Calorimetry ◽  
Force Microscopy ◽  
Glass Substrates

ABSTRACTWe have used Brillouin light scattering (BLS) to measure the glass transition temperature of thin, freely-standing poly(styrene) (PS) films. The freely-standing films were prepared by spincoating solutions of PS in toluene onto glass substrates, annealing the supported films in vacuum, and then using a water surface transfer technique to place the films across a 3 mm diameter orifice. Ellipsometry measurements of similar floated films transferred to Si(001) wafers allow the determination of the film thicknesses. Atomic force microscopy measurements revealed that the films have an rms roughness of less than 10 A˚. With the freely-standing films placed in an optical furnace, we performed BLS measurements of the films using a high-contrast, multipassed, tandem Fabry-Perot interferometer. We obtained a reliable, reproducible measure of the glass transition temperature, Tg, from the large changes in the frequencies of the thermally-excited, viscoelastic, film-guided waves within the PS films as the films were heated above Tg. BLS results for bulk PS and a 1800 A˚ thick, freely-standing PS film are presented. We find the same glass transition temperature for the 1800 A˚ thick film as the bulk PS sample. This Tg value is the same as that obtained using differential scanning calorimetry (DSC).

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