Stabilizing derma collagen structure with modified dispersions of montmorillonite

Baltic Polymer Symposium 2015

材料科学;化学

Maruhlenko, M.O.^1 ; Palamar, V.A.^2 ; Mokrousova, O.R.^2

Department of Technologies of Leather and fur, Kiev National University of Technologies and Design, Nemirovicha-Danchenko str., 2, Kiev

01011, Ukraine^1

Department of Commodity Research and Examination of Nonfoods, Kiev National University of Trade and Economics, Kioto str., 119, Kiev

02156, Ukraine^2

关键词: Chemical interactions;    Collagen structure;    Infrared spectroscopic studies;    Interlayer spaces;    Low-frequency spectra;    Modified montmorillonite;    Native proteins;    Surface hydroxyl groups;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/111/1/012023/pdf
DOI  :  10.1088/1757-899X/111/1/012023

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The article reviews structural changes of derma collagen resulting from processing with modified montmorillonite dispersions. The infrared spectroscopic studies of gelatin as a simulated collagen established chemical interaction of chromium modified montmorillonite dispersions with reactive groups of the native protein. The derma collagen structure is stabilized through formation of hydrogen bonds with the surface hydroxyl groups of montmorillonite of Si-O... H-C and Si-O- H...O-C type. The formation of hydrogen bond between the nitrogen atoms of amino groups of collagen and the water proton in the interlayer space of MMT with cations in the exchange complex is possible. The formation of hydrogen bonds of Si-O....H-C type between the functional groups of chromium modified montmorillonite with CH- groups of protein, as well as Si-O....H-N with NH - groups of protein in the low- frequency spectrum range is also very likely. The efficiency of stabilizing collagen with chromium modified montmorillonite dispersions is proven by an increase of the gelatin melting temperature with mineral consumption of 3-4% of protein weight and chromium compounds (III) for the modification of the mineral around 10% of montmorillonite weight.