title: Effect of cellulose reinforcement on the properties of organic acid modified starch microparticles/plasticized starch bio-composite films.
abstract: The present paper describes the preparation and characterization of polysaccharides-based bio-composite films obtained by the incorporation of 10, 20 and 30 wt% birch cellulose (BC) within a glycerol plasticized matrix constituted by the corn starch (S) and chemical modified starch microparticles (MS). The obtained materials (coded as MS/S, respectively MS/S/BC) were further characterized. FTIR spectroscopy and X-ray diffraction were used to evidence structural and crystallinity changes in starch based films. Morphological, thermal, mechanical, and water resistance properties were also investigated. Addition of cellulose alongside modified starch microparticles determined a slightly improvement of the starch-based films water resistance. Some reduction of water uptake for any given time was observed mainly for samples containing 30% BC. Some compatibility occurred between MS and BC fillers, as evidenced by mechanical properties. Tensile strength increased from 5.9 to 15.1 MPa when BC content varied from 0 to 30%, while elongation at break decreased significantly.
authors: Petru Poni Institute of Macromolecular Chemistry, Natural Polymers Department, 41A Grigore Ghica-Voda Alley, Iasi 700487, Romania. cateaca14@yahoo.com
authors: Carmen-Alice
authors: CA
authors: Teacă
authors: Ruxanda
authors: R
authors: Bodîrlău
authors: Iuliana
authors: I
authors: Spiridon
mesh_terms: D029662:Betula / Q000737:chemistry; D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000737:chemistry; D001696:Biomechanical Phenomena; D002482:Cellulose / Q000737:chemistry*; D003460:Crystallization; D005990:Glycerol / Q000737:chemistry; D010968:Plasticizers / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000737:chemistry*; D013644:Tartrates / Q000737:chemistry*; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction; D003313:Zea mays / Q000737:chemistry
chemical_list: D001672:Biocompatible Materials; D010968:Plasticizers; D013644:Tartrates; D014867:Water; D002482:Cellulose; D013213:Starch; D005990:Glycerol; C029768:tartaric acid