Sugar palm ( Arenga pinnata [ Wurmb .] Merr ) starch films containing sugar palm nanofibrillated cellulose as reinforcement: Water barrier properties

2019 ◽  
Vol 41 (2) ◽  
pp. 459-467 ◽  
Author(s):  
R. A. Ilyas ◽  
S. M. Sapuan ◽  
A. Atiqah ◽  
Rushdan Ibrahim ◽  
Hairul Abral ◽  
...  
Keyword(s):  
Barrier Properties ◽  
Nanofibrillated Cellulose ◽  
Water Barrier ◽  
Starch Films

Sugar Palm Nanofibrillated Cellulose Fibre Reinforced Sugar Palm Starch Nanocomposite. Part 1: Morphological, Mechanical and Physical Properties

2018 ◽  
Author(s):  
R.A. Ilyas ◽  
S.M. Sapuan ◽  
M.R. Ishak ◽  
E.S. Zainudin
Keyword(s):  
Colloidal Suspension ◽  
Cellulose Fibre ◽  
Barrier Properties ◽  
Nanofibrillated Cellulose ◽  
Short Life ◽  
Water Barrier ◽  
Mechanical And Physical Properties ◽  
Ft Ir ◽  
Ir Analysis ◽  
Barrier Resistance

Environmentally friendly starch bionanocomposites were successfully casted using a colloidal suspension of sugar palm nanofibrillated cellulose (SPNFCs) as a nanofiller to reinforce sugar palm starch (SPS). The SPNFCs, having diameters of 5.5±0.99 nm and length of several micrometer, were prepared from sugar palm fibres via high pressurized homogenization process. The dependence of morphology and properties of the SPS-based bionanocomposites on SPNFCs content ranging from 0 to 1.0 wt. % was investigated by FESEM, as well as measurements of physical, mechanical and water barrier properties. FESEM investigation displayed good miscibility between SPS and SPNFCs. FT-IR analysis confirmed that SPS and SPNFCs were compatible and inter-molecular hydrogen bonds existed between them. The SPS/SPNFCs-1.0, has undergone increment in both tensile strength and Young’s modulus for SPS film from 4.80 MPa to 10.68 MPa and from 53.97 MPa to 121.26 MPa, respectively. Reinforcing SPNFCs into SPS matrix led to an improvement in water barrier resistance for the resulting bionanocomposites. Overall, the incorporation of SPNFCs with SPS composites enhances the properties of the bionanocomposites for short-life application; that is, disposable container, plastic packaging, etc.

scholarly journals Morphology, Mechanical, and Water Barrier Properties of Carboxymethyl Rice Starch Films: Sodium Hydroxide Effect

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 331
Author(s):  
Pornchai Rachtanapun ◽  
Sarinthip Thanakkasaranee ◽  
Rafael A. Auras ◽  
Nareekan Chaiwong ◽  
Kittisak Jantanasakulwong ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Sodium Hydroxide ◽  
Water Solubility ◽  
Barrier Properties ◽  
Rice Starch ◽  
Vapor Permeability ◽  
Scanning Calorimetry ◽  
Water Contact ◽  
Water Barrier ◽  
Starch Films

Carboxymethyl rice starch films were prepared from carboxymethyl rice starch (CMSr) treated with sodium hydroxide (NaOH) at 10–50% w/v. The objective of this research was to determine the effect of NaOH concentrations on morphology, mechanical properties, and water barrier properties of the CMSr films. The degree of substitution (DS) and morphology of native rice starch and CMSr powders were examined. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) were used to investigate the chemical structure, crystallinity, and thermal properties of the CMSr films. As the NaOH concentrations increased, the DS of CMSr powders increased, which affected the morphology of CMSr powders; a polyhedral shape of the native rice starch was deformed. In addition, the increase in NaOH concentrations of the synthesis of CMSr resulted in an increase in water solubility, elongation at break, and water vapor permeability (WVP) of CMSr films. On the other hand, the water contact angle, melting temperature, and the tensile strength of the CMSr films decreased with increasing NaOH concentrations. However, the tensile strength of the CMSr films was relatively low. Therefore, such a property needs to be improved and the application of the developed films should be investigated in the future work.

scholarly journals Improved Process to Obtain Nanofibrillated Cellulose (CNF) Reinforced Starch Films with Upgraded Mechanical Properties and Barrier Character

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1071 ◽  
Author(s):  
Luis Angel Granda ◽  
Helena Oliver-Ortega ◽  
Maria José Fabra ◽  
Quim Tarrés ◽  
Maria Àngels Pèlach ◽  
...  
Keyword(s):  
Composite Films ◽  
High Capacity ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Thermoplastic Starch ◽  
Nanofibrillated Cellulose ◽  
Vapor Permeability ◽  
The Matrix ◽  
Starch Films ◽  
The One

Nowadays, the interest on nanofibrillated cellulose (CNF) has increased owing to its sustainability and its capacity to improve mechanical and barrier properties of polymeric films. Moreover, this filler shows some drawbacks related with its high capacity to form aggregates, hindering its dispersion in the matrix. In this work, an improved procedure to optimize the dispersability of CNF in a thermoplastic starch was put forward. On the one hand, CNF needs a hydrophilic dispersant to be included in the matrix, and on the other, starch needs a hydrophilic plasticizer to obtain a thermoformable material. Glycerol was used to fulfil both targets at once. CNF was predispersed in the plasticizer before nanofibrillation and later on was included into starch, obtaining thin films. The tensile strength of these CNF–starch composite films was 60% higher than the plain thermoplastic starch at a very low 0.36% w/w percentage of CNF. The films showed a noticeable correlation between water uptake, and temperature and humidity. Regarding permeability, a ca. 55% oxygen and water vapor permeability drop was found by nanofiller loading. The hydrolytic susceptibility of the composite was confirmed, being similar to that of the thermoplastic starch.

Novel Whey Protein Isolate/Polyvinyl Biocomposite for Packaging: Improvement of Mechanical and Water Barrier Properties by Incorporation of Nano-silica

2021 ◽  
Author(s):  
Bruna Rage Baldone Lara ◽  
Paulo Sérgio de Andrade ◽  
Mario Guimarães Junior ◽  
Marali Vilela Dias ◽  
Lizzy Ayra Pereira Alcântara
Keyword(s):  
Whey Protein ◽  
Barrier Properties ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Nano Silica ◽  
Water Barrier

Multifunctional hydrolyzed EVA membranes with tunable microstructure and water barrier properties

2015 ◽  
Vol 480 ◽  
pp. 93-103 ◽  
Author(s):  
Jorge A. Soto Puente ◽  
Kateryna Fatyeyeva ◽  
Stéphane Marais ◽  
Eric Dargent
Keyword(s):  
Barrier Properties ◽  
Water Barrier

Effect of Thickness on the Water-Barrier Properties of Silane Films

2007 ◽  
Vol 111 (42) ◽  
pp. 15325-15330 ◽  
Author(s):  
Guirong Pan ◽  
Erik Watkins ◽  
Jaroslaw Majewski ◽  
Dale W. Schaefer
Keyword(s):  
Barrier Properties ◽  
Water Barrier
Sign in / Sign up

Export Citation Format

Share Document