Saltar al contenido
Merck
  • Kinetics of poly(propylene fumarate) synthesis by step polymerization of diethyl fumarate and propylene glycol using zinc chloride as a catalyst.

Kinetics of poly(propylene fumarate) synthesis by step polymerization of diethyl fumarate and propylene glycol using zinc chloride as a catalyst.

Journal of biomaterials science. Polymer edition (2002-05-11)
Albert K Shung, Mark D Timmer, Seongbong Jo, Paul S Engel, Antonios G Mikos
RESUMEN

Diethyl fumarate and propylene glycol were reacted in the presence of a zinc chloride catalyst to synthesize poly(propylene fumarate) (PPF) over a period of 12 hours. The kinetics of the transesterification polymerization at 130 degrees C, 150 degrees C, and 200 degrees C were determined by gel permeation chromatography (GPC) analysis. The initial rate of polymerization at each temperature was quantified by calculating the rate of change of the number average molecular weight (Mn). At 200 degrees C, gelation of the PPF occurred after 4 h. GPC analysis of the reaction showed that PPF synthesized at 150 degrees C had a higher final Mn of 4600 (+/- 190) and a higher weight average molecular weight of 10500 (+/- 760) than at 130 degrees C (n = 3). The chemical structure of the PPF was verified by NMR and FT-IR analysis. This study demonstrated that the maximum Mn of PPF by a transesterification reaction is limited due to gelation of PPF at high temperature.

MATERIALES
Referencia del producto
Marca
Descripción del producto

Sigma-Aldrich
Zinc chloride, reagent grade, ≥98%
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Zinc chloride, anhydrous, powder, ≥99.995% trace metals basis
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Zinc chloride solution, 1.0 M in diethyl ether
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Zinc chloride, ACS reagent, ≥97%
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Zinc chloride, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥98%
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Zinc chloride, puriss., meets analytical specification of Ph. Eur., BP, USP, 98-100.5%
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Diethyl fumarate, 98%
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad