Soluble polymers with high glass transition temperatures from

I. Soluble Polymers with High Glass Transition Temperatures from Hindered Biphenols. 

Diamantane-based polymers are synthesized to take advantage of their stiffness, chemical and thermal stability, high glass transition temperature, improved solubility in organic solvents, and retention of their physical properties at high temperatures. All these special properties result from their diamantane-based molecular structure [90]. Polyamides are high-temperature polymers with a broad range of applications in different scientific and industrial fields. However, their process is very difficult because of poor solubility and lack of adequate thermal stability retention [90]. Incorporation of 1,6- or... 

Oat spelt arabinoxylan was used for nanocomposites with cellulose nanowhiskers (CNW) [65-68]. Films prepared from oat spelt arabinoxylan alone have poor film forming ability, which has been attributed to insufiicient chain length of the polymer, high glass transition temperature, or poor solubility. The... 

A Nicolet 7000 FTIR instrument was used for the infrared studies with 120 scans accumulated for all samples. The materials used for the FTIR study were prepared as follows samples of polymers of low glass transition temperatures which were soluble in THF were prepared by the deposition of a polymer solution onto an NaCl window. For moderately high glass transition temperature polymers soluble in THF, samples were prepared by solution casting onto a glass plate. Thin films of polymer samples insoluble in THF were compression molded at 150 to 200 C (depending on the sample). An FTIR calibration curve was obtained from ethyl acrylate copolymers which had previously been neutralized completely with perchloric acid. This curve was used to determine semiquanti-tively the percent proton transfer in the blends. 

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