Blends of Fatty-Acid-Modified Dendrimers With Polyolefins

Published

January 1, 2000

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

Pub Type

Journals

Download Paper

Local Download

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 April 19, 2024)