Morphology and kinetics of the formation of polyamide benzimidazole in N-methylpyrrolidone

2017 Workshop on Materials and Engineering in Aeronautics

材料科学;航空航天工程

Khanchich, O.A.^1,2 ; Larionov, V.B.^1 ; Biryukov, A.L.^2

Moscow Technological Institute, Moscow

119334, Russia^1

RGAU-MSXA K.A. Name Timiryazev, Moscow

127550, Russia^2

关键词: Benzimidazoles;    Kinetics of phase transformation;    Metastable structures;    N-methylpyrrolidone;    Optical methods;    Structure characteristic;    Super-molecular structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/312/1/012011/pdf
DOI  :  10.1088/1757-899X/312/1/012011

来源: IOP

【 摘 要 】

Polymerization-optical methods were used to study the supermolecular structure in the gelation of systems based on polyamidobenzimidazole (PABI) in N-methylpyrrolidone (N-MP) and the kinetics of phase transformations during polymer coagulation from a the solution. It was found that the use of N-MP leads to the appearance in the PABI-N-MP-H2O system of spherulites having a structure characteristic of LC structures. It is shown that the alternation of metastable structures upon gelation of the PABY - N-MP-H2O system is consistent with the appearance of the LC phase of the cholesteric type.