| Title |
Properties of starch modified with dodecenylsuccinic anhydride and acetic anhydride / |
| Authors |
Luneckas, J ; Peciulyte, L ; Bendoraitiene, J ; Rutkaite, R |
| DOI |
10.15388/CCT.2023 |
| ISBN |
9786090708330 |
| Full Text |
|
| Is Part of |
Chemistry and chemical technology: international conference CCT-2023, March 10, 2023, Vilnius: conference book.. Vilnius : Vilnius university press, 2023. P 046, p. 83.. ISBN 9786090708330 |
| Abstract [eng] |
As the global consumption of energy and various products grow there is an increasing need to find renewable sources to fulfill those demands. Thus, highly abundant and renewable materials are being researched to find their possible modifications that could replace current products made from non-sustainable sources. One of those highly researched materials is starch due to it being abundant, renewable, cheap and easy to modify. The aim of this work was to get starch derivatives with different degree of substitution (DS) by modifying it with dodecenylsuccinic anhydride and acetic anhydride and evaluate the influence of such modification on hydrophobicity and thermal properties. Starch dodecenylsuccinate with DSDDSA (from 0.01 to 0.05) did not show the glass transition temperature. The same situation was with acetylated starch dodecenylsuccinate with low DSAc (up to 0.5). But the derivatives with higher DSAc showed glass transition temperature which ranged between 161 and 165 C. The hydrophobicity of derivatives was measured by the water contact angle with the surface of compressed material. Even with a small degree of substitution of starch dodecenylsuccinate the contact angle increased from 38.0(native starch) to 127.8. But additional modification of starch dodecenylsuccinate with acetic anhydride gave decrement of contact angle. In order to assess the changes of granular structure the derivatives have been examined by scanning electron microscopy. As shown in figure 1 destruction of granules occurred during starch dodecenylsuccinate modification with acetic anhydride at higher degree of substitution. [...]. |
| Published |
Vilnius : Vilnius university press, 2023 |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2023 |
| CC license |
|
