Ebrahimzadeh Saba, Ghanbarzadeh Babak, Hamishehkar Hamed
Young Researchers & Elite Club, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran.
Department of Food Science & Technology, Faculty of Agriculture, University of Tabriz, PO Box 51666-16471, Tabriz, Iran.
Int J Biol Macromol. 2016 Mar;84:16-23. doi: 10.1016/j.ijbiomac.2015.11.074. Epub 2015 Dec 2.
Carboxymethyl cellulose (CMC) based bio-nanocomposite filled with graphene nano-platelets (GNPs) was prepared using casting technique. The morphology, thermal, light barrier, water vapor permeability (WVP), contact angle, moisture absorption and mechanical properties of the resulted bio-nanocomposites were investigated. The results indicated with addition of 0.5% w/w GNPs to polymer matrix, ultimate tensile strength (UTS) decreased from 7.74 MPa (in the pure film) to 5.69 MPa however, strain to break (SB) increased from 12.49% to 19.87%. The GNPs caused to reducing of light transmission and increasing of the water repelling nature of nano-biocomposites. However, it had not effect on melting point of CMC based nano-biocomposites.
采用流延技术制备了填充有石墨烯纳米片（GNPs）的羧甲基纤维素（CMC）基生物纳米复合材料。研究了所得生物纳米复合材料的形态、热性能、阻光性、水蒸气透过率（WVP）、接触角、吸湿性能和力学性能。结果表明，向聚合物基体中添加0.5% w/w的GNPs时，极限拉伸强度（UTS）从纯膜中的7.74 MPa降至5.69 MPa，然而，断裂应变（SB）从12.49%增加到19.87%。GNPs导致纳米生物复合材料的透光率降低，疏水性增强。然而，它对CMC基纳米生物复合材料的熔点没有影响。
