Формирование системы двойных связей в процессе термокаталитической дегидратации поливинилового спирта

摘要: The formation of a conjugated bond system in the heat treatment polyvinyl alcohol films with addition hydrochloric acid as an catalyst for thermal dehydration range 80-150 °C has been studied on base electronic spectra. It is established that fine structure absorption spectra 282-443 nm region associated transitions polyconjugated chains number carbon atoms from 8 to 18, exception bands at 310 and 342 nm; only one peak 361 four lines wide band 352-380 optical chain containing 12 atoms. shown long-wave boundary spectrum due largest sizes; maximum size such can be determined by comparing dependence Tauc gap energy inverse function conjugate chain. Since typical sizes poly-conjugation are hundreds (about 300 heated 100 °C), these considered trans-polyacetylene nanoclusters incorporated into matrix.