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| Content Provider | Springer Nature Link |
|---|---|
| Author | Saake, Bodo Zenker, Martin Stein, Armin Puls, Jürgen |
| Copyright Year | 2005 |
| Abstract | Technical cellulose-2.5-acetates (CA 2.5) were characterized regarding their carbohydrate composition in comparison to the raw material. The association of the CA 2.5 samples in acetone was studied by size exclusion chromatography (SEC) using various acetone grades and styrene divinylbenzene copolymer columns. In HPLC grade acetone with and without addition of 1% water up to three different pre-humps eluted in front of the main fraction of the polymer. The evaluation of the main peak by light scattering measurements resulted in high molar masses indicating that for these technical CA 2.5 samples even the main fraction is not dissolved without association. No pre-humps or association phenomena were observed after addition of 1 ppm LiBr to HPLC grade acetone or with p.a. grade acetone. In addition pre-hump enriched and pre-hump free fractions were isolated by fractionated precipitation. The carbohydrate composition of these fractions was determined and correlated with their association pattern in SEC investigations. |
| Starting Page | 449 |
| Ending Page | 458 |
| Page Count | 10 |
| File Format | |
| ISSN | 09690239 |
| Journal | Cellulose |
| Volume Number | 13 |
| Issue Number | 4 |
| e-ISSN | 1572882X |
| Language | English |
| Publisher | Kluwer Academic Publishers |
| Publisher Date | 2006-04-27 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cellulose acetate Hemicellulose Molar mass Pre-hump Size exclusion chromatography Polymer Sciences Physical Chemistry Bioorganic Chemistry Organic Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Polymers and Plastics |
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