| Autor: |
J. L. Garnett, D. H. Phuoc |
| Rok vydání: |
1976 |
| Předmět: |
|
| Zdroj: |
Journal of Macromolecular Science: Part A - Chemistry. 10:709-735 |
| ISSN: |
0022-233X |
| DOI: |
10.1080/00222337608061212 |
| Popis: |
The effect of a range of inorganic and organic acids on the radiation-induced grafting of styrene in methanol to cellulose is discussed using the simultaneous method. Sulfuric acid is the most effective acid for increasing the grafting yield, hydrochloric being the next most efficient. Acetic acid retards the copolymerization. Under the most favorable radiation conditions, inclusion of sulfuric acid (up to 1.1 M) produces a twentyfold increase in graft. The presence of mineral acid also 1) enhances the intensity of a Trommsdorff peak if already present in the grafting solution and 2) induces a peak if none were previously present without acid. A mechanism for the enhanced acid effects in these grafting reactions is proposed involving charge-transfer intermediates. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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