Preparation and Characterization of Melamine Aniline Formaldehyde-Organo Clay Nanocomposite Foams (MAFOCF) as a Novel Thermal Insulation Material DOI Open Access
Ahmet Gürses, Elif Şahin

Polymers, Год журнала: 2024, Номер 16(24), С. 3578 - 3578

Опубликована: Дек. 21, 2024

The main purpose of this study is to prepare a melamine aniline formaldehyde foam, an MAF copolymer, with lower water sensitivity and non-flammability properties obtained by the condensation reaction melamine, aniline, formaldehyde. In addition, preparation MAFF composites organoclay reinforcement was determined as secondary target in order obtain better mechanical strength, heat, sound insulation properties. For synthesis foams, microwave irradiation technique, which offers advantages such faster reactions, high yields purities, reduced curing times, used together heating technique effect content on structural textural foams both heat stability investigated. Virgin MFF, MAFFF, formaldehyde–organoclay nanocomposite prepared various contents, MAFOCFs, were characterized HRTEM, FTIR, SEM, XRD techniques. From spectroscopic microscopic analyses, it observed that flakes could be exfoliated without much change resin matrix increasing clay content. formaldehyde, thought enter polymer network bridge, caused changes polymeric matrix, also affected these changes. Although highest compressive strength MAFOCF5 foam (0.40 MPa), strengths nanocomposites generally quite despite their low bulk densities. 0.30% (MAFOCF2), 0.33 MPa 0.051 thermal conductivity coefficient measured. virgin polymers composites, density, conductivity, values magnitude MFF > MAFOCF1 MAFOCF6 MAFOCF3 MAFOCF2 MAFOCF4; MAFOCF4 MAFOCF3. As result, indicate 0.20 wt% can promising new material.

Язык: Английский

Fabrication of antibacterial bio‐composite from polyvinyl alcohol incorporated with Azadirachta indica DOI Creative Commons
Md. Tanvir Hossaın, Md. Abdus Shahid

SPE Polymers, Год журнала: 2024, Номер 6(1)

Опубликована: Авг. 23, 2024

Abstract This study focuses on the development of a bio‐composite by combining polyvinyl alcohol (PVA) with Azadirachta indica (neem) extract using film casting method. The morphological structure was analyzed scanning electron microscopy (SEM), antibacterial properties were assessed through agar disc diffusion method, and thermal behaviors studied TGA DSC. Fourier transforms infrared spectroscopy (FTIR) employed to investigate bonding behavior, Universal Strength Tester used determine mechanical properties. SEM image revealed that surface produced PVA neem (PNBC) exhibited moderate texture porosity 11.13% 9.25%, respectively. developed activity inhibition zones 18 mm against E. coli 21 S. aureus . FTIR spectra bio‐composites displayed distinctive peaks corresponding both neem, confirming their presence in material. material's elongation at break (117.493 mm) peak (64.159 reflect its capacity for deformability flexibility under stress. Moreover, PNBC has T g 84°C, pyrolysis temperature 266°C, degrades between 230 400°C, as shown DSC TGA. Finally, results this experiment compared available literature cost analysis conducted. Highlights Bio‐composite is structure, properties, mechanical, have been studied. shows aureus. are presented.

Язык: Английский

Процитировано

0
Prediction of Mechanical Properties of Nano-Clay-Based Biopolymeric Composites DOI Creative Commons
Rodica Voicu,

Mihai Gologanu,

C. Tibeică

и другие.

Nanomaterials, Год журнала: 2024, Номер 14(17), С. 1403 - 1403

Опубликована: Авг. 28, 2024

An understanding of the mechanical behavior polymeric materials is crucial for making advancements in applications and efficiency nanocomposites, encompasses their service life, load resistance, overall reliability. The present study focused on prediction biopolymeric nanocomposites with nano-clays as nanoadditives, using a new modeling simulation method based Comsol Multiphysics software 6.1. This considered complex case flake-shaped nano-clay additives that could form aggregates along matrix, varying nanoadditive thickness, consequently affecting resulting properties nanocomposite. matrix investigated was biopolyamide 11 (BIOPA11). Several BIOPA11 samples reinforced three different contents (0, 3, 10 wt%), dispersion grades (employing extrusion screw configurations) were obtained by compounding process. these studied experimental tensile test. results indicate an enhancement Young’s modulus content increased from 0 to wt% same grades. In addition, value when rate improved, showing highest increase around 93% nanocomposite nano-clay. A comparison modeled measurements values performed validate results. simulated fit well modulus.

Язык: Английский

Процитировано

0
Laponite vs. Montmorillonite as Eugenol Nanocarriers for Low Density Polyethylene Active Packaging Films DOI Creative Commons

Achilleas Kechagias,

Constantinos E. Salmas, Nikolaos Chalmpes

и другие.

Nanomaterials, Год журнала: 2024, Номер 14(23), С. 1938 - 1938

Опубликована: Дек. 2, 2024

Although a lot of recent research revealed advantages novel biopolymers' implementation as active food packaging polymers, there is not an equivalent effort from industry to use such films, probably because the required cost change supply chain and equipment. This study investigates two natural abundant nanoclays, laponite (Lap) montmorillonite (Mt), eugenol slow-release carriers for enhancing functionality low-density polyethylene (LDPE) films. The target combine spirit circular economy with existent technology broadly used materials develop attractive product applications. Utilizing vacuum-assisted adsorption method, was successfully intercalated into Lap Mt forming EG@Lap EG@Mt nanohybrids. Testing results confirmed effective integration dispersion nanohybrids within LDPE matrix. most promising final film seems be 15%

Язык: Английский

Процитировано

0
Preparation and Characterization of Melamine Aniline Formaldehyde-Organo Clay Nanocomposite Foams (MAFOCF) as a Novel Thermal Insulation Material DOI Open Access
Ahmet Gürses, Elif Şahin

Polymers, Год журнала: 2024, Номер 16(24), С. 3578 - 3578

Опубликована: Дек. 21, 2024

The main purpose of this study is to prepare a melamine aniline formaldehyde foam, an MAF copolymer, with lower water sensitivity and non-flammability properties obtained by the condensation reaction melamine, aniline, formaldehyde. In addition, preparation MAFF composites organoclay reinforcement was determined as secondary target in order obtain better mechanical strength, heat, sound insulation properties. For synthesis foams, microwave irradiation technique, which offers advantages such faster reactions, high yields purities, reduced curing times, used together heating technique effect content on structural textural foams both heat stability investigated. Virgin MFF, MAFFF, formaldehyde–organoclay nanocomposite prepared various contents, MAFOCFs, were characterized HRTEM, FTIR, SEM, XRD techniques. From spectroscopic microscopic analyses, it observed that flakes could be exfoliated without much change resin matrix increasing clay content. formaldehyde, thought enter polymer network bridge, caused changes polymeric matrix, also affected these changes. Although highest compressive strength MAFOCF5 foam (0.40 MPa), strengths nanocomposites generally quite despite their low bulk densities. 0.30% (MAFOCF2), 0.33 MPa 0.051 thermal conductivity coefficient measured. virgin polymers composites, density, conductivity, values magnitude MFF > MAFOCF1 MAFOCF6 MAFOCF3 MAFOCF2 MAFOCF4; MAFOCF4 MAFOCF3. As result, indicate 0.20 wt% can promising new material.

Язык: Английский

Процитировано

0