title: Preparation and physical properties of tara gum film reinforced with cellulose nanocrystals.
abstract: Cellulose nanocrystals (CNC) prepared from microcrystalline cellulose were blended in tara gum solution to prepare nanocomposite films. The morphology, crystallinity, and thermal properties of the CNC and films were evaluated by using transmission electron microscopy, X-ray diffractometry, and thermogravimetric analysis, respectively. The resultant CNC was rod-shaped with diameters of around 8.6 nm. The effect of CNC content on physical and thermal properties of films was studied. The composite film tensile strength increased from 27.86 to 65.73 MPa, elastic modulus increased from 160.98 MPa to 882.49 MPa and the contact angle increased from 55.8° to 98.7° with increasing CNC content from 0 to 6 wt%. However, CNC addition increased the thermal stability slightly and CNC content above 6 wt% decreased the tensile strength by CNC aggregation in the matrix. The nanocomposite film containing 6 wt% CNC possessed the highest light transmittance, mechanical properties, and lowest oxygen permeability. CNC addition is a suitable method to modify tara gum matrix polymer properties.
authors: Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, PR China.
authors: Qianyun
authors: Q
authors: Ma
authors: Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, PR China.
authors: Dongying
authors: D
authors: Hu
authors: Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, PR China. Electronic address: donglinwlj@163.com.
authors: Lijuan
authors: L
authors: Wang
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D055595:Mechanical Phenomena; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology; D055620:Optical Phenomena; D055585:Physical Phenomena; D053149:Plant Gums / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D053149:Plant Gums; D014867:Water; C038612:tara gum; D002482:Cellulose; C109691:microcrystalline cellulose
keywords: Cellulose nanocrystals; Nanocomposite films; Physical properties; Tara gum