CHEMICAL METHOD FOR THE DETERMINATION OF STARCH IN POLYETHYLENE Academic Article

abstract

• A chemical/spectrophotometric procedure has been developed that allows the determination of starch and some modified starches (as glucosyl residues) in polyethylene films and pellets. The method uses samples containing up to 60 mg polyethylene and determines the anhydrous starch content of samples possessing starch loads in the range typically encountered with degradable plastics (5-40%). The method consists of dissolution of the polyethylene component into decahydronapthalene (decalin) at 150C followed by solubilization with partial hydrolysis of the starch component in 1M HCI at 100C. An aliquot of the resulting starch hydrolyzate is analyzed for total carbohydrate using the phenol-sulfuric acid method. The method has been tested on two sets of specially prepared starch-polyethylene films as well as on several commercial products. 1991, Taylor & Francis Group, LLC. All rights reserved.

authors

• Nikolov, Zivko

published proceedings

• ANALYTICAL LETTERS

author list (cited authors)

• FRATZKE, A. R., SUNG, W., EVANGELISTA, R. L., & NIKOLOV, Z. L.

citation count

• 5

complete list of authors

• FRATZKE, AR||SUNG, W||EVANGELISTA, RL||NIKOLOV, ZL

publication date

• January 1991

publisher

• Taylor & Francis  Publisher

published in

• ANALYTICAL LETTERS  Journal

keywords

• Degradable Plastics
• Polyethylene
• Starch Determination

Digital Object Identifier (DOI)

• 10.1080/00032719108052948

start page

• 847

end page

• 856

volume

• 24

issue

• 5

URL

• http://dx.doi.org/10.1080/00032719108052948