IR光谱研究TIR晶体结构

IR STUDY ON THE CRYSTALLINE STRUCTURES OF TIR

本文用IR光谱研究了由齐格勒系催化剂聚合的反式聚异戊二烯(TIR)的α和β型结晶体在低温下以及从室温到75℃加热时,每升高5℃的结构变化。

In this paper,the structure changes of α-form or β-form crystalline of trans-polyisoprene(TIR) have been studied by means of infrared spectroscopy. Some of the experiments were carried on at a low temperature by using liquid nitrogen to keep it. The others were investigated from room temperature(20℃)to a higher one by raising 5℃ in temperature every time. As a result, split bands have been found in both spectra of α-form and β-form crystalline at a low temperature. Another result shows that crystalline will change into amorphous state when the temperature rise up to 70℃ for α-form or when the temperature rise up to 50℃ for β-form.