Our experimental results from this in vitro study were compared with different kinetic models, such as those of Baker and Lonsdale (first order); Weibull, Hixson, and Crowell; and Peppas and Higuchi [24, 26]. Sigma Plot (Ver. 9.01) was used different mathematical models to determine the release mechanism. The results best fit with the Peppas model, with a correlation coefficient of R2 = 0.9928. The fit with the Peppas model indicates that the release of SCN from the nanoparticles occurred by a polymer matrix and obeyed Fick’s law of diffusion, which transported the drug from the polymeric matrix. The mucoadhesion of the nanoparticles, which was characterized by the initial swelling and adsorption of (or the weak binding to) the surface of polymeric nanoparticles quite likely contributed to the high rate of “burst” [27]. After this burst cascade, the controlled release of SCN from the nanoparticles was maintained for many hours in the stomach.The FTIR spectra of the pure drug showed significant bands at 3,339.06 (amine functional group), 3,149.80 (C–H stretching), and 1,633.71 cm−1 (C=O group); N–H bending occurs around 1,597.06 cm−1 for primary amides, while for secondary amides it occurs around 1,514.12 cm−1. In terms of the major characteristic peaks, those for pure chitosan appeared around 1,141.75 cm−1, 1,371.79 cm−1, and 1,315.41 cm−1, corresponding to the presence of O–H bending, C–O stretching, C–N stretching, C–O–H bending (1,415.75 cm−1). Further, a significant band was observed at 3,794.23 cm−1 for aromatic C–H stretching. Similar significant characteristic peaks of the drug remain unchanged in the formulation (Figure 5(a)), which confirms that there was no significant interaction between SCN (Figure 5(b)) and the polymer (Figure 5(c)).
我們從該體外研究的實驗結果具有不同的動力學模型,如貝克和代爾(第一順序)的進行比較; 韋伯,希克森和韋爾; 和Peppas和樋口[24,26]。西格瑪劇情(版本9.01)中的溶液中使用不同的數學模型,以確定所述釋放機構。結果的最佳擬合與Peppas模型,其中R 2 = 0.9928的相關係數。與Peppas模型擬合表明SCN的從納米顆粒的釋放發生由聚合物基體和服從Fick擴散定律,其中輸送的藥物從聚合物基質中。納米顆粒,其特點是所述初始腫脹和吸附的(或弱結合)的聚合物納米顆粒的表面的粘膜粘附很可能促成了“突發”[27]的高速率。這一陣級聯後,<br><br>純藥物的FTIR光譜顯示顯著頻帶在3,339.06(胺官能團),3,149.80(C-H伸縮),和1,633.71 -1(C = O基); N-H彎曲左右出現1,597.06 -1為伯酰胺,而仲酰胺它發生圍繞1,514.12 -1。在主要特徵峰而言,那些純殼聚醣周圍出現1,141.75 -1,1,371.79 -1,和1,315.41 -1,對應於O - H的存在下彎曲,C-O伸縮,C-N伸縮, C-O-H彎曲(1,415.75厘米-1)。此外,在3,794.23 -1為芳族C-H伸縮觀察到顯著帶。所述藥物的相似顯著特徵峰保留在製劑中(圖5的(a)),這證實了有SCN之間和聚合物(圖5(c))的無顯著相互作用(圖5(B))不變。
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