scholarly journals Effect of plasticizers on the properties of sugar palm nanocellulose/cinnamon essential oil reinforced starch bionanocomposite films

2022 ◽  
Vol 11 (1) ◽  
pp. 423-437
Author(s):  
Razali Mohamad Omar Syafiq ◽  
Salit Mohd Sapuan ◽  
Mohamed Yusoff Mohd Zuhri ◽  
Siti Hajar Othman ◽  
Rushdan Ahmad Ilyas
Keyword(s):  
Essential Oil ◽  
Moisture Content ◽  
Food Packaging ◽  
Solution Casting ◽  
Casting Method ◽  
Film Forming ◽  
Different Types ◽  
Bionanocomposite Films ◽  
Solution Casting Method ◽  
Cinnamon Essential Oil

Abstract This work examines the effects of plasticizer type and concentration on mechanical, physical, and antibacterial characteristics of sugar palm nanocellulose/sugar palm starch (SPS)/cinnamon essential oil bionanocomposite films. In this research, the preparation of SPS films were conducted using glycerol (G), sorbitol (S), and their blend (GS) as plasticizers at ratios of 1.5, 3.0, and 4.5 wt%. The bionanocomposite films were developed by the solution casting method. Plasticizer Plasticizers were added to the SPS film-forming solutions to help overcome the fragile and brittle nature of the unplasticized SPS films. Increasing plasticizer contents resulted in an increase in film thickness and moisture contents. On the contrary, the increase in plasticizer concentrations resulted in the decrease of the densities of the plasticized films. The increase in the plasticizer content from 1.5 to 4.5% revealed less influence towards the moisture content of S-plasticised films. For glycerol and glycerol-sorbitol plasticized (G and GS) films, higher moisture content was observed compared to S-plasticised films. Various plasticizer types did not significantly modify the antibacterial activity of bionanocomposite films. The findings of this study showed significant improvement in the properties of bionanocomposite films with different types and concentrations of plasticizers and their potential for food packaging applications was enhanced.

scholarly journals The Effect of Stereocomplex Polylactide Particles on the Stereocomplexation of High Molecular Weight Polylactide Blends

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2018
Author(s):  
Muhammad Samsuri ◽  
Ihsan Iswaldi ◽  
Purba Purnama
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Nucleating Agent ◽  
Solution Casting ◽  
Casting Method ◽  
Crystalline Fraction ◽  
Crystalline Structures ◽  
Solution Casting Method

Stereocomplexation is one of several approaches for improving polylactide (PLA) properties. The high molecular weight of poly L-lactide (PLLA) and poly D-lactide (PDLA) homopolymers are a constraint during the formation of stereocomplex PLAs (s-PLAs). The presence of s-PLA particles in PLA PLLA/PDLA blends can initiate the formation of s-PLA crystalline structures. We used the solution casting method to study the utilization of s-PLA materials from high molecular weight PLLA/PDLA blends for increasing s-PLA formation. The s-PLA particles initiated the formation of high molecular weight PLLA/PDLA blends, obtaining 49.13% s-PLA and 44.34% of the total crystalline fraction. In addition, the mechanical properties were enhanced through s-PLA crystalline formation and the increasing of total crystallinity of the PLLA/PDLA blends. The s-PLA particles supported initiation for s-PLA formation and acted as a nucleating agent for PLA homopolymers. These unique characteristics of s-PLA particles show potential to overcome the molecular weight limitation for stereocomplexation of PLLA/PDLA blends.

The Effect of Ammonium Bromide on Methylcellulose Biopolymer Electrolytes for Electrical Studies

2021 ◽  
Vol 317 ◽  
pp. 426-433
Author(s):  
Siti Nurhaziqah Abd Majid ◽  
Afiqah Qayyum Ishak ◽  
Nik Aziz Nik Ali ◽  
Muhamad Zalani Daud ◽  
Hasiah Salleh
Keyword(s):  
Fourier Transform ◽  
Ammonium Bromide ◽  
Solution Casting ◽  
X Ray Diffraction ◽  
Casting Method ◽  
X Ray ◽  
Electrical Studies ◽  
Biopolymer Electrolytes ◽  
Salt Complex ◽  
Solution Casting Method

The development of biopolymer electrolytes based on methylcellulose (MC) has been accomplished by incorporating ammonium bromide (NB) to the polymer-salt system. The biopolymer electrolytes were prepared via solution-casting method. The conductivity and permittivity characteristics of the material were studied. The biopolymer-salt complex formation have been analysed through Fourier Transform Infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The conductivity of the sample was measured by EIS HIOKI. Upon addition of 20 wt.% of NB, highest conductivity of 3.25×10-4 μScm-1 was achieved at ambient temperature. The temperature dependence of the biopolymer electrolytes exhibit Arrhenius behaviour. This result had been further proven in FTIR study.

scholarly journals Formulation and Characterization of Antimicrobial Edible Films Based on Whey Protein Isolate and Tarragon Essential Oil

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1748
Author(s):  
Maria-Ioana Socaciu ◽  
Melinda Fogarasi ◽  
Cristina Anamaria Semeniuc ◽  
Sonia Ancuţa Socaci ◽  
Mihaela Ancuţa Rotar ◽  
...  
Keyword(s):  
Essential Oil ◽  
Food Packaging ◽  
Physical And Mechanical Properties ◽  
B Value ◽  
Protein Isolate ◽  
Puncture Resistance ◽  
A Value ◽  
Heat Treated ◽  
Film Forming ◽  
L Value

The effects of heat treatment and the addition of tarragon essential oil on physical and mechanical properties of films prepared with 5% whey protein isolate (WPI) and 5% glycerol were investigated in this study. Heat treatment of the film-forming solution caused increases in thickness, moisture content, swelling degree, water vapor permeability (WVP), b*-value, ΔE*-value, transmittance values in the 200–300-nm region, transparency, and puncture resistance of the film, but decreases in water solubility, L*-value, a*-value, transmittance values in the 350–800-nm region, and puncture deformation. When incorporated with tarragon essential oil, heat-treated films have the potential to be used as antimicrobial food packaging. The addition of tarragon essential oil in film-forming solution caused increases in moisture content, solubility in water, WVP, a*-value, b*-value, ΔE*-value, and transparency of the film; decreases in transmittance values in the range of 600–800 nm; and variations in swelling degree, L*-value, transmittance values in the range of 300–550 nm, puncture resistance, and puncture deformation. Nevertheless, different tendencies were noticed in UNT (untreated) and HT (heat-treated) films with regards to transparency, light transmittance, puncture resistance, and puncture deformation. Based on these findings, HT films show improved physical and mechanical properties and, therefore, are more suitable for food-packaging applications.

scholarly journals Preparation, Physicochemical Characterization, and Microrobotics Applications of Polyvinyl Chloride- (PVC-) Based PANI/PEDOT: PSS/ZrP Composite Cation-Exchange Membrane

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Mohd Imran Ahamed ◽  
Inamuddin ◽  
Abdullah M. Asiri ◽  
Mohammad Luqman ◽  
Lutfullah
Keyword(s):  
Physicochemical Characterization ◽  
Solution Casting ◽  
Polystyrene Sulfonate ◽  
X Ray Diffraction ◽  
Casting Method ◽  
X Ray ◽  
Solution Casting Method ◽  
Exchange Membrane ◽  
Differential Thermogravimetry ◽  
Aniline Polymerization

Poly(3,4-ethylene dioxythiophene): polystyrene sulfonate (PEDOT: PSS) zirconium(IV) phosphate (ZrP) based ionomeric membrane was prepared by a solution-casting method. Subsequently, aniline polymerization was carried out on the surface of the membrane by oxidative chemical polymerization. It was characterized by thermogravimetric analysis/differential thermal analysis/differential thermogravimetry (TGA/DTA/DTG), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX) analysis, and Fourier-transform infrared (FTIR) spectroscopy. The membrane was also characterized by ion-exchange properties. The tip displacement investigation of the ionomeric membrane was also carried out. The outcomes demonstrated that the manufactured ionomeric membrane could produce generative strengths (tip powers), and consequently create good displacement. In this manner, the proposed ionomeric membrane was found proper for bending movement actuator that will give a successful and promising stage for smaller-scale mechanical applications.

scholarly journals Polyarylene ether nitrile and boron nitride composites: coating with sulfonated polyarylene ether nitrile

e-Polymers ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 70-78 ◽  
Author(s):  
Renbo Wei ◽  
Qian Xiao ◽  
Chenhao Zhan ◽  
Yong You ◽  
Xuefei Zhou ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Composite Films ◽  
Solution Casting ◽  
Casting Method ◽  
Polyarylene Ether Nitrile ◽  
Arylene Ether ◽  
Ultrasonic Technology ◽  
Solution Casting Method ◽  
Sulfonated Poly

AbstractBoron nitride (BN) coated with sulfonated poly-arylene ether nitrile (SPEN) (BN@SPEN) was used as additive to enhance the thermal conductivity of polyarylene ether nitrile. BN@SPEN was prepared by coating BN micro-platelets with SPEN through ultrasonic technology combined with the post-treatment bonding process. The prepared BN@SPEN was characterized by FTIR, TGA, SEM and TEM, which confirmed the successful coating of BN micro-platelets. The obtained BN@SPEN was introduced into the PEN matrix to prepare composite films by a solution casting method. The compatibility between BN and PEN matrix was studied by using SEM observation and rheology measurement. Furthermore, thermal conductivity of BN@SPEN/PEN films were carefully characterized. Thermal conductivity of BN@SPEN/PEN films was increased to 0.69 W/(m⋅K) at 20 wt% content of BN@SPEN, having 138% increment comparing with pure PEN.

Encapsulation of cinnamon essential oil in electrospun nanofibrous film for active food packaging

Food Control ◽  
2016 ◽  
Vol 59 ◽  
pp. 366-376 ◽  
Author(s):  
Peng Wen ◽  
Ding-He Zhu ◽  
Hong Wu ◽  
Min-Hua Zong ◽  
Yi-Ru Jing ◽  
...  
Keyword(s):  
Essential Oil ◽  
Food Packaging ◽  
Active Food Packaging ◽  
Cinnamon Essential Oil
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