التفاصيل البيبلوغرافية
| العنوان: |
Effect of additives on fabrication and properties of hydroxypropyl methylcellulose-based hydrogels. |
| المؤلفون: |
Giang, Ha N., Le, Anh T. K., Huynh, Tuan N. A., Phung, Thanh Khoa, Sakai, Wataru |
| المصدر: |
Polymer Bulletin; Oct2023, Vol. 80 Issue 10, p11121-11137, 17p |
| مصطلحات موضوعية: |
FOURIER transform infrared spectroscopy, DYNAMIC mechanical analysis, CROSSLINKED polymers, DIFFERENTIAL scanning calorimetry, METHYLENE blue |
| مستخلص: |
Hydrogel materials based on bio-degradable polymers have received a lot of interest owing to many potential applications. In this study, hydroxypropyl methylcellulose (HPMC) as a based polymer was cross-linked using 5 wt% of non-toxic citric acid. Polyethylene glycol (PEG) and glycerol were used as gelation accelerants. The effect of reaction temperature on the ability to cross-link the matrix was investigated using differential scanning calorimetry (DSC), thermogravimetric (TGA), and dynamic mechanical analysis (DMA). The cross-linking process could not be observed using DSC or TGA. However, the sample with PEG and glycerol exhibited the highest increase of storage modulus in DMA measurement. A completely gelled state (100% gel fraction) could be obtained in all sample types at the temperature of 140 °C for 10 h. The addition of PEG significantly improved the gel fraction of HPMC-based hydrogel. With a higher concentration of PEG, the increase of C = O groups which were a result of the esterification of citric acid and HPMC molecule was confirmed by Fourier transform infrared spectroscopy (FTIR). The sample with 1 wt% of PEG showed the highest methylene blue adsorption. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
