Department of Fiber System Engineering, Yeungnam University, South Korea.
Department of Fiber System Engineering, Yeungnam University, South Korea.
Int J Biol Macromol. 2018 Oct 15;118(Pt A):561-568. doi: 10.1016/j.ijbiomac.2018.06.110. Epub 2018 Jun 24.
The aim is to develop novel synergistic transparent k-Carrageenan/Xanthan gum/Gellan gum (k-C/X/G) hydrogel films with different weight ratio composition and to study the effect of these compositions on the physical properties of the films. The structure and morphological properties of the films were investigated by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD) and differential scanning calorimeter (DSC). Results for FT-IR, DSC and SEM analysis showed a clear interaction between k-C, X, and G to form a new material. The mechanical, thermal and water barrier properties such as water vapor permeability (WVP), water contact angle (WCA) and moisture content were determined. The temperature at 5% weight loss (T) are in the range of 64.2-121.9 °C. The WVP exhibits are in the range of 1.8-2.4, contact angle are in the range of 32-65.8° and moisture content 16.5-21.51. The hydrogel film had good tensile strength of 19.1-31.0 MPa and elongation at break of 13-19% and tensile modulus of 1.6-2.4 GPa. The UV results indicate that the films were very transparent. The range of properties of the ternary k-C/X/G hydrogel films suggest that the presence molecular interaction and cross linking within the blends.
目的是开发具有不同重量比组成的新型协同透明卡拉胶/黄原胶/结冷胶（k-C/X/G）水凝胶膜，并研究这些组成对膜物理性能的影响。通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、X 射线衍射（XRD）和差示扫描量热法（DSC）研究了膜的结构和形态特性。FT-IR、DSC 和 SEM 分析结果表明，k-C、X 和 G 之间存在明显的相互作用，形成了一种新材料。测定了机械、热和水阻隔性能，如水蒸气透过率（WVP）、水接触角（WCA）和水分含量。5%重量损失时的温度（T）在 64.2-121.9°C 范围内。WVP 为 1.8-2.4，接触角为 32-65.8°，水分含量为 16.5-21.51。水凝胶膜具有良好的拉伸强度 19.1-31.0 MPa、断裂伸长率 13-19%和拉伸模量 1.6-2.4 GPa。UV 结果表明，这些薄膜具有很高的透明度。三元 k-C/X/G 水凝胶膜的性能范围表明，混合物中存在分子相互作用和交联。
