Polyquinolines glass transition temperature

Because of the good solubility of polyquinoline 3 in chloroform and its relatively low Tg, oligomers of this polymer capped with biphenylene, 14 were prepared according to the relationship DP=1+r/1+r-2rp, where r=moles of ketomethylene monomer/aminoketone monomer and p=extent of the reaction (Table 3). The oligomers before processing showed glass transition temperatures consistent with the relationship Tg=T 00 -k/Mn, (k- 2.5xl05). 

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