Effect of glycerol as plasticizer on the tensile properties of chitosan/microcrystalline cellulose films

2021 ◽  
Author(s):  
S. Lau ◽  
A. W. M. Kahar ◽  
M. D. Yusrina
Keyword(s):  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Cellulose Films

Effects of microcrystalline cellulose on the mechanical properties of low-density polyethylene composites

2018 ◽  
Vol 32 (3) ◽  
pp. 297-311 ◽  
Author(s):  
Yousef Ahmad Mubarak ◽  
Raghda Talal Abdulsamad
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Impact Strength ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Weight Fraction ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Ldpe Composites ◽  
The Impact

This work was intended to provide an understanding of the effect of microcrystalline cellulose (MCC) on the mechanical properties of low-density polyethylene (LDPE). The impact resistance and the tensile properties of low-density LDPE/MCC composites were investigated. The weight fraction of MCC was varied at (0, 0.5, 1, 2.5, 5, 10, 20, and 30 wt%). The obtained blends were then used to prepare the required tensile and impact testing samples by hot compression molding technique. It has been found that MCC has a strong influence on the mechanical properties of LDPE. At a low MCC weight fraction, there was a little improvement in the ultimate strength, fracture stress, and elongation at break, but at a high MCC weight fraction, the tensile properties were deteriorated and reduced significantly. The addition of 1 wt% MCC to LDPE enhanced the mentioned properties by 10, 25, and 6%, respectively. While at 30 wt% MCC, these properties were lowered by 36, 25, and 96%. The elastic modulus of LDPE composites was improved on all MCC weight fractions used in the study, at 20 wt% MCC, an increase in the elastic modulus by 12 folds was achieved. On the other hand and compared with the impact strength of pure LDPE, the addition of MCC particles enhanced the impact strength, the highest value obtained was for LDPE composites filled with 10 wt% MCC where the impact strength enhanced by two folds.

Thermal and Mechanical Properties of Corn Stalk Microcrystalline Cellulose Reinforced PLA Composites

2011 ◽  
Vol 233-235 ◽  
pp. 1726-1729
Author(s):  
Chun Guang Li ◽  
Rui Zhang ◽  
Yun Xia Li ◽  
Peng Fei Xu ◽  
Yan Qiu Wang
Keyword(s):  
Thermal Properties ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Composite Films ◽  
Decomposition Temperature ◽  
Corn Stalk ◽  
Thermal And Mechanical Properties ◽  
Initial Decomposition Temperature ◽  
Elongation At Break ◽  
Biodegradable Composite

The biodegradable composite films were prepared from corn stalk microcrystalline cellulose as filler and polylactic acid (PLA) as polymeric matrix. The crystallinity, the tensile properties and the thermal properties of the composites were tested. The results show that the tensile properties and thermal properties were improved with the addition of corn stalk microcrystalline cellulose. When corn stalk microcrystalline cellulose account for 10% of the PLA quality, the initial decomposition temperature was raised by 34.38, tensile strength increased by 58.3% and elongation at break increased by 31.1% compared to those of pure PLA.

Preparation and Properties of Bagasses Cellulose Microcrystal Reinforced Poly(Vinyl alcohol) Composite Film

2011 ◽  
Vol 399-401 ◽  
pp. 381-384
Author(s):  
Chun Guang Li ◽  
Bin Guo Zheng ◽  
Wei Gong Peng ◽  
Wei Tian ◽  
Rui Zhang
Keyword(s):  
Thermal Properties ◽  
Composite Film ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Vinyl Alcohol ◽  
Composite Films ◽  
Poly Vinyl Alcohol ◽  
Elongation At Break ◽  
Biodegradable Composite ◽  
Cellulose Microcrystal

The biodegradable composite films were prepared from bagasse microcrystalline cellulose as filler and poly(vinyl alcohol)(PVA) as polymeric matrix. The crystallinity, the tensile properties and the thermal properties of the composites were tested. Bagasse microcrystalline cellulose was distributed in PVA films as the crystalline state. The results show that the tensile properties and thermal properties were improved with the addition of bagasse microcrystalline cellulose. When bagasse microcrystalline cellulose mass fraction was 5%, both temperature of initial decomposition and maximum weight loss rate of composite film were raised by 11.71°C and 36.86°C, and the tensile strength increased by 17.88%, and the elongation at break increased by 36.62% compared to those of pure PVA.

Reduced Graphene Oxide/Carboxymethyl Cellulose Nanocomposites: Novel Conductive Films

2019 ◽  
Vol 19 (6) ◽  
pp. 3544-3550 ◽  
Author(s):  
Jutamas Ampaiwong ◽  
Pranee Rattanawaleedirojn ◽  
Kanokwan Saengkiettiyut ◽  
Nadnudda Rodthongkum ◽  
Pranut Potiyaraj ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Water Absorption ◽  
Tensile Properties ◽  
Reduced Graphene Oxide ◽  
Carboxymethyl Cellulose ◽  
Water Solubility ◽  
Cellulose Film ◽  
Cellulose Films ◽  
Reduced Graphene

Herein, carboxymethyl cellulose nanocomposite films incorporated with graphene oxide and reduced graphene oxide were successfully prepared by a novel approach for the first time, and their alternative properties compared with the original carboxymethyl cellulose films were disclosed. For carboxymethyl cellulose/reduced graphene oxide film preparation, sodium borohydride was used as a chemical reducing agent. The carboxymethyl cellulose films were prepared by using a solvent casting method, followed by an acid treatment to decrease the water solubility (98%) while enhancing the tensile strength (15%) and elastic modulus (32%) of the original carboxymethyl cellulose films. Overall, the addition of 1.0 wt% graphene oxide and reduced graphene oxide to the treated films increased the water solubility, water absorption, tensile properties and electrical conductivity. Particularly, the electrical conductivity was predominantly enhanced 1.3×105 times with graphene oxide and 2.2×105 times with reduced graphene oxide compared to the treated carboxymethyl cellulose film. The electrical conductivity of the treated carboxymethyl cellulose film also increased with an increase in reduced graphene oxide. The effects of reduced graphene oxide on the water solubility, water absorption, tensile properties and electrical conductivity of the treated carboxymethyl cellulose film were more pronounced than those of graphene oxide, especially for the electrical conductivity. In conclusion, graphene oxide and reduced graphene oxide might be alternative nanofillers for improving the carboxymethyl cellulose film properties. For the future applications, carboxymethyl cellulose/reduced graphene oxide films prepared by using this approach might be employed as alternative materials in electronic packagings and electrochemical biosensors.

The Effect of Corn Stalk Microcrystalline Cellulose on Thermal and Mechanical Properties of Chitosan Composites

2012 ◽  
Vol 174-177 ◽  
pp. 1038-1041 ◽  
Author(s):  
Chun Guang Li ◽  
Xiang Ping Wang ◽  
Lei Liu ◽  
Jie Hu Cui ◽  
Rui Zhang
Keyword(s):  
Thermal Properties ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Loss Rate ◽  
Composite Films ◽  
Corn Stalk ◽  
Weight Loss Rate ◽  
Elongation At Break ◽  
Biodegradable Composite ◽  
Maximum Weight Loss

The biodegradable composite films were prepared from corn stalk microcrystalline cellulose as filler and chitosan as polymeric matrix. The crystallinity, the tensile properties and the thermal properties of the composites were tested. The results show that the tensile properties and thermal properties were improved with the addition of corn stalk microcrystalline cellulose. When corn stalk microcrystalline cellulose account for 10% of the chitosan quality, the initial decomposition and maximum weight loss rate temperature was raised by 13.19°C and 38.84°C, tensile strength increased by 83.55% and elongation at break increased by 77.38% compared to those of pure chitosan

Characteristics of Microwave-Esterified Cellulose Film from Corn Husk and Cotton: Effects of Degree of Substitution

2010 ◽  
Vol 93-94 ◽  
pp. 259-262
Author(s):  
Jittiporn Saeng-On ◽  
Duangdao Aht-Ong
Keyword(s):  
Water Absorption ◽  
Tensile Properties ◽  
1H Nmr ◽  
Cotton Fabrics ◽  
Esterification Reaction ◽  
Cellulose Film ◽  
Cellulose Films ◽  
Corn Husk ◽  
Waste Cotton Fabrics ◽  
Modified Cellulose

The modified cellulose film was synthesized from corn husk and waste cotton fabrics in LiCl/DMAc solvent system by esterification reaction under microwave energy using lauroyl chloride and DMAP as an esterifying agent and a catalyst, respectively. By varying microwave power and reaction time used in the esterification reaction, modified cellulose powder with various degree of substitution (DS) was obtained. The structure of modified cellulose was proved by FT-IR and 1H-NMR analysis. The DS value of modified cellulose was measured by 1H-NMR. The modified cellulose films with different DS values were prepared by casting method. The influences of DS values on the properties of the prepared modified cellulose films were tested for their wettability, water absorption, gloss, and tensile properties. The results showed significant effect of the cellulose source and the DS values on the properties of modified cellulose film. The modified cellulose from corn husk resulted in the film with greater tensile strength and elongation at break than the film from waste cotton fabrics. The esteried-cellulose from both sources with high DS values yielded the film with higher tensile properties and lower water absorption.

scholarly journals Morphology, Structural, Thermal, and Tensile Properties of Bamboo Microcrystalline Cellulose/Poly(Lactic Acid)/Poly(Butylene Succinate) Composites

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 465
Author(s):  
Masrat Rasheed ◽  
Mohammad Jawaid ◽  
Bisma Parveez ◽  
Aamir Hussain Bhat ◽  
Salman Alamery
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Lactic Acid ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Poly Lactic Acid ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Uniform Dispersion ◽  
Scanning Electron

The present study aims to develop a biodegradable polymer blend that is environmentally friendly and has comparable tensile and thermal properties with synthetic plastics. In this work, microcrystalline cellulose (MCC) extracted from bamboo-chips-reinforced poly (lactic acid) (PLA) and poly (butylene succinate) (PBS) blend composites were fabricated by melt-mixing at 180 °C and then hot pressing at 180 °C. PBS and MCC (0.5, 1, 1.5 wt%) were added to improve the brittle nature of PLA. Field emission scanning electron microscopy (FESEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscope (FTIR), thermogravimetric analysis (TGA), differential thermogravimetry (DTG), differential scanning calorimetry (DSC)), and universal testing machine were used to analyze morphology, crystallinity, physiochemical, thermal, and tensile properties, respectively. The thermal stability of the PLA-PBS blends enhanced on addition of MCC up to 1wt % due to their uniform dispersion in the polymer matrix. Tensile properties declined on addition of PBS and increased with MCC above (0.5 wt%) however except elongation at break increased on addition of PBS then decreased insignificantly on addition of MCC. Thus, PBS and MCC addition in PLA matrix decreases the brittleness, making it a potential contender that could be considered to replace plastics that are used for food packaging.

scholarly journals Development of seaweed-based bamboo microcrystalline cellulose films intended for sustainable food packaging applications

BioResources ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 3389-3410 ◽  
Author(s):  
D. Hermawan ◽  
Tze Kiat Lai ◽  
Shima Jafarzadeh ◽  
Deepu A. Gopakumar ◽  
Hasan M. ◽  
...  
Keyword(s):  
Microcrystalline Cellulose ◽  
Food Packaging ◽  
Water Solubility ◽  
Moisture Absorption ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Absorption Capacity ◽  
Vapor Permeability ◽  
Sustainable Food ◽  
Cellulose Films

Seaweed bio-composite films with different proportion of Lemang and Semantan bamboo microcrystalline cellulose (MCC) were fabricated via solvent casting. The seaweed/MCC composite films were flexible, transparent, and slightly yellow. The MCC particles further enhanced mechanical properties and opacity of films. The thermal stability of seaweed films was moderately improved upon addition of bamboo MCC particles. Bamboo MCC was found to be comparable to commercial MCC in reducing the water vapor permeability (WVP), water solubility (WS), and moisture absorption capacity (MSC) of seaweed films. The tensile strength (TS) of seaweed films was increased by 20 to 23% with addition of up to 5% MCC particles. In addition, bamboo MCC efficiently reduced the WVP of seaweed films comparable to commercial MCC particles. The WS of seaweed films was decreased by 10 to 19% with addition of 1% MCC particles loading. Lemang bamboo MCC (SB-MCC) was remarkably reduced the moisture absorption capacity (MAC) of films up to 25% with inclusion of only 1% MCC. Morphological analysis via Scanning Electron Microscopy (SEM) confirmed that there was homogeneous dispersion of MCC particles in the films. MCC particles improved the mechanical, thermal, and optical properties of seaweed films making them more suitable for food packaging applications.

Electrochemical Behavior of Electroactive PVS/PANI Films Containing Chemically Modified Cellulose

2016 ◽  
Vol 869 ◽  
pp. 809-814
Author(s):  
Paulo Ronaldo Sousa Teixeira ◽  
Ana Siqueira do N. Marreiro Teixeira ◽  
José Regilmar Teixeira da Silva ◽  
Emanuel Airton de Oliveira Farias ◽  
Natália de Araujo Dionisio ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Maleic Anhydride ◽  
Microcrystalline Cellulose ◽  
Sulfonic Acid ◽  
Layer By Layer ◽  
Cellulose Films ◽  
Electroactive Films ◽  
Chemically Modified ◽  
Anionic Groups ◽  
Modified Cellulose

Electroactive films containing cellulose modified with cationic and anionic groups were prepared with polyaniline (PANI) and poly (vinyl sulfonic acid) (PVS). The modifications were performed with (aminomethyl) pyridine (AMP), ethylenediamine (EDA), buthylenediamine (BN), bis-(aminopropyl) piperazine (APP), maleic anhydride (MA), and phosphate PO43- groups. The films were prepared using the layer-by-layer (LbL) technique, utilizing dispersed cellulose in a PANI solution forming the PVS/PANI system (cationic or anionic cellulose). Films of unmodified microcrystalline cellulose (MC) were also prepared for comparison. The films were characterized by cyclic voltammetry. The electrochemical responses of PANI present in the film, especially in terms of current density and redox potential, were found to be influenced by the modification of the cellulose.

Changes in the Molecular Orientation and Tensile Properties of Uniaxially Drawn Cellulose Films

2006 ◽  
Vol 7 (11) ◽  
pp. 3146-3150 ◽  
Author(s):  
Wolfgang Gindl ◽  
Klaus J. Martinschitz ◽  
Peter Boesecke ◽  
Jozef Keckes
Keyword(s):  
Tensile Properties ◽  
Molecular Orientation ◽  
Cellulose Films
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