𝔖 Bobbio Scriptorium
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Stability of helical polyamino acids in solution at high temperatures

✍ Scribed by James S. Franzen; John B. Harry; Caroline Bobik

Publisher
Wiley (John Wiley & Sons)
Year
1967
Tongue
English
Weight
514 KB
Volume
5
Category
Article
ISSN
0006-3525

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✦ Synopsis

Optical rotatory dispersion studies have been carried out at, temperatures up to 150Β°C. on poly(ybenzy1 Lgliitamate) in a-chloronaphthalene and N-methylcaprolactam, and on poly-6-carbobeiixoxy-L-lysine, poly-6-carbobenzoxy-Lo1 nithine, and poly(bg1utamic acid) in N-methylacetamide. The h3offittrYang -bo values were large in all cases, buts significant decreases in -bo were observed a t the upper temperature limits of the stiidy suggesting that a transition region was being entered. Polymer degradation generally precluded examination of the systems through the suggested transitlion region.

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