Structure and Properties of Model Polybutadienes - Effect of Microstructure on the Dynamic Mechanical Properties of Rubber
Source abstract
Abstract
A series of controlled microstructure polybutadiene rubbers (PBs) was synthesized via anionic polymerization. Their structure and proper ties are analyzed by means of GPC, 13 C NMR, DSC, and DMA, and compared to the behavior of some commercial high cis rubbers. Thermal analyses results indicate the presence of crystalline domains of different nature in PBs with high cis-1,4 and high trans-1,4 isomers content, while rubbers with high content of vinyl-1,2 units do not show evidence of crystals. A shift in T g to higher temperatures as vinyl content increases is observed; an expression was found for predicting T g of rubber from microstructure data.
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Research context
OpenAlex topics: Polymer crystallization and properties · Polymer Nanocomposites and Properties · Fuel Cells and Related Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Departamento de Ingeniería Química, Laboratorio de Polímeros L-213, Facultad de Química, Universidad Nacional Autónoma de México, C.P. 04510 México D.F., México
Departamento de Ingeniería Química, Laboratorio de Polímeros L-213, Facultad de Química, Universidad Nacional Autónoma de México, C.P. 04510 México D.F., México,
Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, C.P. 07730 México D.F., México
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