Nanofibrillated Cellulose Sugar Palm Fibre Reinforced Sugar Palm Starch Nanocomposite. Part 2: Thermal, Water Barrier and Biodegradation Properties

2018 ◽  
Author(s):  
R.A. Ilyas ◽  
S.M. Sapuan ◽  
M.R. Ishak ◽  
E.S. Zainudin
Keyword(s):  
Thermal Stability ◽  
Thermal Water ◽  
Nanofibrillated Cellulose ◽  
Food Container ◽  
Soil Burial ◽  
Water Barrier ◽  
Sugar Palm Fibre ◽  
Solution Casting Method ◽  
Degradation Properties ◽  
Palm Fibre

The objective was to characterize the thermal, water barrier, and soil degradation properties of biodegradable sugar palm starch (SPS) containing sugar palm nanofibrillated cellulose (SPNFCs) in the range of 0.1-1.0 wt. %. The nanocomposites were casted using solution-casting method. The thermal stability, water resistance and degradation behavior improved with increasing SPNFCs content, due to compatible and inter-molecular hydrogen bonds existed between SPS and SPNFCs. The present work shows that SPS/SPNFCs nanocomposites with 1.0 wt. % SPNFCs content have the highest thermal stability. TGA analysis shows an increasing in residue left with increase in SPNFCs content. Soil burial tests showed biodegradation resistance of the nanocomposites. In conclusion, the addition of SPNFCs improved the thermal properties of starch polymer which widened the potential application of this eco-friendly material. The most promising applications for this eco-friendly material are short-life products such as plastic packaging, food container, etc.

Thermal, Biodegradability and Water Barrier Properties of Bio-Nanocomposites Based on Plasticised Sugar Palm Starch and Nanofibrillated Celluloses from Sugar Palm Fibres

2020 ◽  
Vol 14 (2) ◽  
pp. 234-248 ◽  
Author(s):  
R. A. Ilyas ◽  
S. M. Sapuan ◽  
Rushdan Ibrahim ◽  
Hairul Abral ◽  
M. R. Ishak ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Waste Product ◽  
Barrier Properties ◽  
Life Cycles ◽  
Degradation Behaviour ◽  
Food Container ◽  
Soil Burial ◽  
Water Barrier ◽  
Potential Applications ◽  
Short Product

Sugar palm (Arenga pinnata) starch and fibre are considered as a waste product of the agroindustry. The purpose of the current study is to determine the thermal, water barrier, and soil degradation properties of biodegradable plasticised sugar palm starch (PSPS) that contains sugar palm nanofibrillated celluloses (SP-NFCs) derived from sugar palm fibre. The bio-nanocomposites were fabricated by using the solution-casting method with the nanocellulose contents in the range of 0.1 wt.%–1.0 wt.%. The thermal stability, water resistance and degradation behaviour improved with increase in SP-NFCs content, due to high compatibility and strong inter-molecular hydrogen bonds formed between PSPS and SP-NFCs. PSPS/SP-NFCs bio-nanocomposites with 1.0 wt.% SP-NFCs content displayed the highest mechanical and thermal stability. Residue that was left during the TGA analysis increased as the SP-NFCs content was increased. Soil burial tests showed biodegradability resistance of the bio-nanocomposites. The following conclusions can be drawn from the present reinforcement study of SP-NFCs enhanced biodegradability, water barrier as well as thermal properties of starch polymer which extended the prospective application of environmentally-friendly polymer material. Potential applications for this eco-material are short product life cycles (plastic packaging and food container).

scholarly journals Fabrication and characterization of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite

e-Polymers ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 038-046
Author(s):  
Xu Yan ◽  
Wanru Zhou ◽  
Xiaojun Ma ◽  
Binqing Sun
Keyword(s):  
Thermal Stability ◽  
Oxygen Permeability ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Nucleating Agent ◽  
Vapor Permeability ◽  
Casting Method ◽  
Increasing Trend ◽  
Solution Casting Method

Abstract In this study, a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite (MMT/PHBH) was fabricated by solution-casting method. The results showed that the addition of MMT increased the crystallinity and the number of spherulites, which indicated that MMT was an effective nucleating agent for PHBH. The maximum decomposition peak of the biocomposites moved to a high temperature and residue presented an increasing trend. The biocomposites showed the best thermal stability at 1 wt% MMT. Compared with PHBH, 182.5% and 111.2% improvement in elastic modulus and tensile strength were obtained, respectively. Moreover, the oxygen permeability coefficient and the water vapor permeability of MMT/PHBH biocomposites decreased by 43.9% and 6.9%, respectively. It was also found that the simultaneous enhancements on the crystallizing, thermal stability, mechanical, and barrier properties of biocomposites were mainly caused by the formation of intercalated structure between PHBH and MMT.

scholarly journals Effect of Modified Tapioca Starch on Mechanical, Thermal, and Morphological Properties of PBS Blends for Food Packaging

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1187 ◽  
Author(s):  
Rafiqah Ayu ◽  
Abdan Khalina ◽  
Ahmad Harmaen ◽  
Khairul Zaman ◽  
Mohammad Jawaid ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Food Packaging ◽  
Hydrolytic Degradation ◽  
Free Water ◽  
Morphological Properties ◽  
Tapioca Starch ◽  
Food Container ◽  
Plastic Bags ◽  
Stretching Vibration ◽  
Modified Tapioca Starch

In this study, polybutylene succinate (PBS) was blended with five types of modified tapioca starch to investigate the effect of modified tapioca starch in PBS blends for food packaging by identifying its properties. Tensile and flexural properties of blends found deteriorated for insertion of starch. This is due to poor interface, higher void contents and hydrolytic degradation of hydrophilic starch. FTIR results show all starch/PBS blends are found with footprints of starch except OH stretching vibration which is absent in B40 blends. Besides, Broad O–H absorption in all specimens show that these are hydrogen bonded molecules and no free O–H bonding was found. SEM testing shows good interfacial bonding between PBS and starch except E40 blends. Therefore, poor results of E40 blends was expected. In TGA, a slightly weight loss found between 80 to 100 °C due to free water removal. Apart from this, insertion of all types of starch reduces thermal stability of blend. However, high crystallinity of starch/PBS blend observed better thermal stability but lower char yield. Starch A and B blends are suggested to be used as food wrap and food container materials while starch D blend is suitable for grocery plastic bags according to observed results.

scholarly journals Acetylation improves thermal stability and transmittance in FOLED substrates based on nanocellulose films

RSC Advances ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 3619-3625 ◽  
Author(s):  
Shuang Yang ◽  
Qiuxia Xie ◽  
Xiuyu Liu ◽  
Min Wu ◽  
Shuangfei Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Pressure ◽  
Nanofibrillated Cellulose ◽  
High Pressure Homogenization ◽  
Mechanical Grinding ◽  
Homogenization Process ◽  
Softwood Pulp

Bleached softwood pulp was used to prepare nanofibrillated cellulose (NFC) by mechanical grinding and a high-pressure homogenization process.

Preparation and Degradation Properties of Hydroxyethyl Chitosan-g-Poly(D,L-Lactide) Copolymers

2012 ◽  
Vol 457-458 ◽  
pp. 308-313
Author(s):  
Bing Hong Luo ◽  
Jian Hua Li ◽  
Wan Xu ◽  
Chang Ren Zhou
Keyword(s):  
Ring Opening ◽  
Ph Value ◽  
Saline Water ◽  
Feed Ratio ◽  
Casting Method ◽  
Composition And Structure ◽  
Solution Casting Method ◽  
Lactide Copolymers ◽  
Degradation Properties

The goal of the present study was to investigate the degradation of hydroxyethyl chitosan-g-poly(D,L-lactide) (HECS-g-PDLLA) copolymers in vitro. For this purpose, HECS-g-PDLLA copolymers were firstly synthesized by bulk ring-opening polymerization with different nD,L-lactide:naminoglucoside feed ratio. Then, a series of poly(D,L-lactide), chitosan and HECS-g-PDLLA copolymers films were prepared by solution casting method, and their degradation were carried out in vitro in saline water at 37 °C. The degradation properties were investigated by measurement of pH value, weight loss, and changes in the composition and structure of the HECS-g-PDLLA copolymers films with time. Results showed that the degradation of the HECS-g-PDLLA copolymers occurred firstly on the poly(D,L-lactide) side chains. The degradation rate of the graft copolymers obviously faster than that of CS, and can be controlled by changing the value of nD,L-lactide:naminoglucoside. Due to the alkalinity of CS, the pH value of saline water for HECS-g-PDLLA copolymers degradation higher than that of PDLLA.

scholarly journals Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 22 ◽  
Author(s):  
Agueda Sonseca ◽  
Salim Madani ◽  
Gema Rodríguez ◽  
Víctor Hevilla ◽  
Coro Echeverría ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Silver Nanoparticles ◽  
Lactic Acid ◽  
Food Packaging ◽  
Synthesis Method ◽  
Crystallization Rate ◽  
Poly Lactic Acid ◽  
Scanning Calorimetry ◽  
The Matrix ◽  
Degradation Properties

Poly(lactic acid) (PLA) is one of the most commonly employed synthetic biopolymers for facing plastic waste problems. Despite its numerous strengths, its inherent brittleness, low toughness, and thermal stability, as well as a relatively slow crystallization rate represent some limiting properties when packaging is its final intended application. In the present work, silver nanoparticles obtained from a facile and green synthesis method, mediated with chitosan as a reducing and stabilizing agent, have been introduced in the oligomeric lactic acid (OLA) plasticized PLA in order to obtain nanocomposites with enhanced properties to find potential application as antibacterial food packaging materials. In this way, the green character of the matrix and plasticizer was preserved by using an eco-friendly synthesis protocol of the nanofiller. The X-ray diffraction (XRD) and differential scanning calorimetry (DSC) results proved the modification of the crystalline structure as well as the crystallinity of the pristine matrix when chitosan mediated silver nanoparticles (AgCH-NPs) were present. The final effect over the thermal stability, mechanical properties, degradation under composting conditions, and antimicrobial behavior when AgCH-NPs were added to the neat plasticized PLA matrix was also investigated. The obtained results revealed interesting properties of the final nanocomposites to be applied as materials for the targeted application.

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