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Blends of Fatty-Acid-Modified Dendrimers With Polyolefins

Published

Author(s)

Barry J. Bauer, A Ramzi, D W. Liu, R L. Scherrenberg, P Froehling, J Joosten

Abstract

Blends were made by solution and melt mixing fatty acid modified dendrimers with various polyolefins. Small angle neutron scattering (SANS) was used to determine the miscibility of the blends. Poly propylene imine (PPI) dendrimers G1, G3, and G5 (DAB-dendr-(NH2)y) with y = 4, 16, and 64, were reacted with stearic acid or stearic acid-d35 forming amide bonds. The modified dendrimers were then blended with high density polyethylene (HDPE), high density polyethylene-d4 (HDPE-d4), low density polyethylene (LDPE), amorphous polypropylene (P), or an ethylene-butylene copolymer (E-co-B). Limiting power law behaviour shows that all of the blends are immiscible. It is likely that the dendrimers form a second phase, being finely dispersed, but thermodynamically immiscible.
Citation
Journal of Polymer Science Part B-Polymer Physics
Volume
38
Issue
No. 1

Keywords

dendrimer, PAMAM, radius of gyration, SANS, solvent

Citation

Bauer, B. , Ramzi, A. , Liu, D. , Scherrenberg, R. , Froehling, P. and Joosten, J. (2000), Blends of Fatty-Acid-Modified Dendrimers With Polyolefins, Journal of Polymer Science Part B-Polymer Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851521 (Accessed July 16, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created December 31, 1999, Updated October 12, 2021