Prediction of Glass Transition Temperatures from Monomer and Repeat Unit Structure Using Computational Neural Networks

2002 ◽  
Vol 42 (2) ◽  
pp. 232-240 ◽  
Author(s):  
Brian E. Mattioni ◽  
Peter C. Jurs
Keyword(s):  
Neural Networks ◽  
Glass Transition ◽  
Repeat Unit ◽  
Transition Temperatures ◽  
Glass Transition Temperatures ◽  
Unit Structure ◽  
Computational Neural Networks

Naphthalene-based poly(aryl ether)s. II. Synthesis and characterization of poly(ether ketone)s containing two 1,4-naphthylene moieties in the repeat unit

1997 ◽  
Vol 75 (10) ◽  
pp. 1346-1353 ◽  
Author(s):  
Zhi Yuan Wang ◽  
Peter W. Broughton
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Repeat Unit ◽  
Synthesis And Characterization ◽  
Transition Temperatures ◽  
Aryl Ether ◽  
Glass Transition Temperatures ◽  
Phenyl Sulfone ◽  
Ether Ketone

Two new monomers, 4-chloro-1-(4′-fluoro-1-naphthoyl)naphthalene and 1,4-bis(4′-fluoro-1′-naphthoyl)benzene, have been synthesized and polymerized with four different bisphenols to give two series of the naphthalene-based poly(ether ketone)s that are analogous to commercial PEEK and PEEKK. The effect of the introduction of one or two 1,4-naphthylene moieties, in the backbone of the repeat unit, on the glass transition temperatures has been studied. The glass transition temperatures usually increased by 20–45 °C upon replacing one 1,4-phenylene with one 1,4-naphthylene moiety. All new poly (ether ketone)s prepared in tetramethylene sulfone were amorphous, with the glass transition temperatures in a range of 212–273 °C. The polymer produced from 1,4-bis(4′-fluoro-1′-naphthoyl)benzene and 1,4-hydroquinone in phenyl sulfone as a solvent at 300 °C showed semicrystalline properties with a melting temperature of 310 °C. Keywords: naphthalene, poly(ether ketone)s, synthesis, characterization, glass transition temperature.

Predicting glass transition temperatures using neural networks

2018 ◽  
Vol 159 ◽  
pp. 249-256 ◽  
Author(s):  
Daniel R. Cassar ◽  
André C.P.L.F. de Carvalho ◽  
Edgar D. Zanotto
Keyword(s):  
Neural Networks ◽  
Glass Transition ◽  
Transition Temperatures ◽  
Glass Transition Temperatures
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