Molar mass and composition effects on the thermal stability of functional P(S-r-MMA) random copolymers for nanolithographic applications

2017 ◽  
Vol 2 (5) ◽  
pp. 581-588 ◽  
Author(s):  
Diego Antonioli ◽  
Valentina Gianotti ◽  
Katia Sparnacci ◽  
Michele Laus ◽  
Marco Clericuzio ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Molar Mass ◽  
Random Copolymers ◽  
Composition Effects ◽  
Thermal Stability Of

The thermal stability of P(S-r-MMA) random copolymers for BCP-based nanolithography is discussed with reference to molar mass and composition.

Organic solvent-free synthesis of phosphorus-containing polymers

2007 ◽  
Vol 79 (11) ◽  
pp. 1879-1884 ◽  
Author(s):  
Smaranda Iliescu ◽  
Gheorghe Ilia ◽  
Aurelia Pascariu ◽  
Adriana Popa ◽  
Nicoleta Plesu
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Bisphenol A ◽  
Organic Solvent ◽  
Molar Mass ◽  
Interfacial Polycondensation ◽  
H Nmr ◽  
Phosphorus Containing ◽  
Solvent Free Synthesis ◽  
Thermal Stability Of

Direct, efficient, organic solvent- and catalyst-free synthesis of a series of polyphosphates was accomplished. The reaction involved a gas-liquid interfacial polycondensation between arylphosphoric dichlorides and bisphenol A. The polyphosphates were characterized by IR, 1H NMR, 31P NMR, inherent viscosity, thermal analysis, and molar mass. Yields in the range 70-90 % and inherent viscosities in the range 0.30-0.40 dl/g were obtained. The thermal stability of the polyphosphates was investigated by using thermogravimetry.

On the Thermal Stability of PS-b-PMMA Block and P(S-r-MMA) Random Copolymers for Nanopatterning Applications

2013 ◽  
Vol 46 (20) ◽  
pp. 8224-8234 ◽  
Author(s):  
Valentina Gianotti ◽  
Diego Antonioli ◽  
Katia Sparnacci ◽  
Michele Laus ◽  
Tommaso Jacopo Giammaria ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Random Copolymers ◽  
Thermal Stability Of

Thermal Stability of Functional P(S-r-MMA) Random Copolymers for Nanolithographic Applications

2015 ◽  
Vol 7 (7) ◽  
pp. 3920-3930 ◽  
Author(s):  
Katia Sparnacci ◽  
Diego Antonioli ◽  
Valentina Gianotti ◽  
Michele Laus ◽  
Giampaolo Zuccheri ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Random Copolymers ◽  
Thermal Stability Of

scholarly journals Thermal stability of aliphatic hyperbranched polyesters

2002 ◽  
Vol 56 (11) ◽  
pp. 473-477
Author(s):  
Jasna Vukovic ◽  
Branislav Bozic ◽  
Manfred Lechner ◽  
Slobodan Jovanovic
Keyword(s):  
Thermal Stability ◽  
Stearic Acid ◽  
Molar Mass ◽  
Nitrogen Atmosphere ◽  
Fourth Generation ◽  
Mass Generation ◽  
Hyperbranched Polyesters ◽  
Mass Losses ◽  
End Groups ◽  
Thermal Stability Of

The influence of the molar mass (generation), number and type of end groups on the thermal stability of aliphatic hyperbranched polyesters are presented in this study. Different end groups were obtained by modification of the samples with chlorides of propionic acid and stearic acid. The thermal stability of the hyperbranched polyesters was determined by thermogravimetry using a NET-ZSCH TG 209 instrument in nitrogen atmosphere at a heating rate of 10?C/min. A comparison of the temperatures obtained for mass losses of 5 20 and 40 wt% for unmodified samples showed that the thermal stability increased up to the fourth generation and then remained practically constant. An increase in the thermal stability of modified samples of the second, third and fourth generation was observed.

Increased thermal stability of a poled electro-optic polymer using high-molar-mass fractions

2004 ◽  
Vol 70 (4) ◽  
Author(s):  
Ralph P. Bertram ◽  
Nils Benter ◽  
Dirk Apitz ◽  
Elisabeth Soergel ◽  
Karsten Buse ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Molar Mass ◽  
High Molar Mass ◽  
Electro Optic ◽  
Mass Fractions ◽  
Thermal Stability Of

Effect of layered silicates on rheological and mechanical properties and thermal stability of high-molar mass polydimethylsiloxane matrix

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Veronika Rabova ◽  
Petr Hron
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Silicone Rubber ◽  
Molar Mass ◽  
Strength Increase ◽  
Weight Decay ◽  
High Molar Mass ◽  
Surface Modified ◽  
Thermal Stability Of

AbstractThe effect of surface modified fillers based on montmorillonite on rheological and mechanical properties and thermal stability of high-molar mass polydimethylsiloxane matrix was evaluated. Silicone rubber/clay composites were prepared via homogenisation on open two roll-mill followed by torque measurement at two different temperatures. At 30 °C and 100 °C the torque did not extremely differ excepting the mixtures containing Cloisite 15A where it achieved the maximum at 3 phr montmorillonite content, but the tensile strength reached the similar values in all mixtures. Thermogravimetric analysis was utilized to find out the differences in weight decay of composites in silicone rubber/montmorillonite mixtures and in unfilled silicone rubber. Synergism of fillers was also studied and led to tensile strength increase.

The Ordered Phase Formation in Ti-Al-Ga Alloys

1970 ◽  
Vol 28 ◽  
pp. 440-441
Author(s):  
Shiro Fujishiro ◽  
Harold L. Gegel
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Titanium Alloys ◽  
Growth Kinetics ◽  
Stoichiometric Composition ◽  
Good Potential ◽  
Alpha Titanium ◽  
Cold Rolled ◽  
Kinetics Of ◽  
Thermal Stability Of

Ordered-alpha titanium alloys having a DO19 type structure have good potential for high temperature (600°C) applications, due to the thermal stability of the ordered phase and the inherent resistance to recrystallization of these alloys. Five different Ti-Al-Ga alloys consisting of equal atomic percents of aluminum and gallium solute additions up to the stoichiometric composition, Ti3(Al, Ga), were used to study the growth kinetics of the ordered phase and the nature of its interface.The alloys were homogenized in the beta region in a vacuum of about 5×10-7 torr, furnace cooled; reheated in air to 50°C below the alpha transus for hot working. The alloys were subsequently acid cleaned, annealed in vacuo, and cold rolled to about. 050 inch prior to additional homogenization

Microstructure studies of tungsten silicide schottky contacts on Gaas

1987 ◽  
Vol 45 ◽  
pp. 328-329
Author(s):  
Yih-Cheng Shih ◽  
E. L. Wilkie
Keyword(s):  
Thermal Stability ◽  
Field Effect Transistors ◽  
Schottky Contact ◽  
Schottky Contacts ◽  
Excellent Thermal Stability ◽  
Barrier Heights ◽  
Gaas Substrates ◽  
Film Adhesion ◽  
Threshold Voltages ◽  
Thermal Stability Of

Tungsten silicides (WSix) have been successfully used as the gate materials in self-aligned GaAs metal-semiconductor-field- effect transistors (MESFET). Thermal stability of the WSix/GaAs Schottky contact is of major concern since the n+ implanted source/drain regions must be annealed at high temperatures (∼ 800°C). WSi0.6 was considered the best composition to achieve good device performance due to its low stress and excellent thermal stability of the WSix/GaAs interface. The film adhesion and the uniformity in barrier heights and ideality factors of the WSi0.6 films have been improved by depositing a thin layer of pure W as the first layer on GaAs prior to WSi0.6 deposition. Recently WSi0.1 has been used successfully as the gate material in 1x10 μm GaAs FET's on the GaAs substrates which were sputter-cleaned prior to deposition. These GaAs FET's exhibited uniform threshold voltages across a 51 mm wafer with good film adhesion after annealing at 800°C for 10 min.

Thermal stability of Al-Cu-Fe icosahedral alloys

1991 ◽  
Vol 1 (12) ◽  
pp. 1823-1836 ◽  
Author(s):  
M. Bessière ◽  
A. Quivy ◽  
S. Lefebvre ◽  
J. Devaud-Rzepski ◽  
Y. Calvayrac
Keyword(s):  
Thermal Stability ◽  
Thermal Stability Of

Practical criteria for the thermal stability of a unidimensional superconductor

1994 ◽  
Vol 4 (4) ◽  
pp. 653-657
Author(s):  
B. Bonzi ◽  
M. El Khomssi ◽  
H. Lanchon-Ducauquis
Keyword(s):  
Thermal Stability ◽  
Thermal Stability Of
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