癸二酸
凝胶渗透色谱法
油酸
聚合物
缩聚物
尿素
材料科学
降级(电信)
化学
有机化学
核化学
高分子化学
计算机科学
生物化学
电信
作者
Mustafa Zakiedin,Mansour Alhoshan,Maher M. Alrashed,Lahssen El Blidi
出处
期刊:Polymers
[MDPI AG]
日期:2022-11-08
卷期号:14 (22): 4799-4799
标识
DOI:10.3390/polym14224799
摘要
Valorizing the fatty content of agricultural waste in material synthesis is an interesting topic. This work focused on utilizing oleic acid from the solid waste of olive mills in Saudi Arabia to synthesize biodegradable polyanhydrides based on sebacic acid which terminated with different concentrations of fatty acid (10, 30, 50, and 70 wt%), then characterize the final polymer samples and study the effects of termination on polyanhydrides properties, such as molecular weight and degradation profile. The fatty content of the solid waste was extracted, purified, and analyzed prior to and after separating the saturated and unsaturated fractions by urea crystallization, then the microwave-assisted melt polycondensation technique was used in the synthesis of the final polymers. Molecular weights were determined by gel permeation chromatography (GPC), and the degradation profile of the prepared samples was examined by determining the weight loss percentage of the polymer mass and FT-IR scanning for the anhydride bond before and after sample degradation. Results showed a linear degradation profile for most samples with no significant change in the molecular weights due to termination.
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