Permeability of water and oleic acid in composite films of phase separated polypropylene and cellulose stearate blends
Artikel i vetenskaplig tidskrift, 2016

Cellulose esters with long carbon side chains (e.g. stearate) were produced via a homogenous reaction in ionic liquids. The degree of substitution was calculated to approximately 2. The melt rheology was studied for the pure cellulose esters but also combinations of the esters and polypropylene to study the processability of a blended composite material. It was shown that the compatibility between the two components was weak, which resulted in a phase-separated composite material. The morphology and permeability of water and oleic acid of the composite films were studied and it was shown that the water permeability decreased upon addition of the cellulose ester to the polymer. The permeability of oleic acid was however unchanged, which is most probable a result of high solubility in the cellulose ester rich domains of the composites. Also, the following hypothesis is stated: cellulose stearate influence the polypropylene crystallization process by decreasing the size of spherulites. (C) 2016 Elsevier Ltd. All rights reserved.

nanocomposites

Permeability

Polymer blending

Polymer Science

esters

derivatives

acylation

Cellulose stearate

Polypropylene

1-butyl-3-methylimidazolium chloride

dispersion

ionic liquids

polyethylene

Chemistry

Spherulites

Författare

I. Krasnou

Tallinna Tehnikaülikool

Sofie Gårdebjer

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Farmaceutisk teknologi

E. Tarasova

Tallinna Tehnikaülikool

Anette Larsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Farmaceutisk teknologi

Gunnar Westman

Chalmers, Kemi och kemiteknik, Kemi och biokemi, Organisk kemi

A. Krumme

Tallinna Tehnikaülikool

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 152 450-458

Ämneskategorier

Polymerkemi

Organisk kemi

Styrkeområden

Materialvetenskap

DOI

10.1016/j.carbpol.2016.07.016

PubMed

27516292