Effect of Modified Clay on the Morphological and Thermal Properties of PLA/PBAT Nanocomposites.

Osman, Mohd Junaedy; Ibrahim, Nor Azowa; Yunus, Wan Md Zin Wan

doi:10.13005/ojc/330639

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…Osman and co‐workers observed that adding 1% Cloisite® 20A increased the T onset in PBAT/PLA blends, 84 but this behavior was not seen in this work with the nanocomposite membranes. However, the authors did not obtain a porous membrane, which is the case of this project.…”

Section: Resultscontrasting

confidence: 60%

“…Niazi and co-workers showed that adding cellulose in PVA increased the crystallinity, relative humidity, and tensile strength limit of the membranes. 83 Osman and co-workers observed that adding 1% Cloisite ® 20A increased the T onset in PBAT/PLA blends, 84 but this behavior was not seen in this work with the nanocomposite membranes. However, the authors did not obtain a porous membrane, which is the case of this project.…”

Section: Thermogravimetric Analysis (Tga)contrasting

confidence: 62%

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Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Zanini,

Ferreira,

Barbosa

et al. 2023

J of Applied Polymer Sci

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The method employed for membrane preparation and nanoparticle incorporation in membrane systems can affect their properties. This work aims to compare the better strategy to obtain membranes from the preparation of PBAT [Poly(butylene adipate co‐terephthalate)] containing nanoclay Cloisite® 20A (C20A) (0, 0.5, and 1 wt.%) by combined Evaporation/Non‐solvent Induced Phase Separation (EIPS/NIPS) or dip coating methods. The SEM, TGA, contact angle measurements, FTIR, XRD, mechanical testing, and cost analysis characterized EIPS/NIPS to dip coating membranes. EIPS/NIPS membranes had smaller pores (0.3–0.5 μm), with a more homogeneous pore diameter distribution due to C20A nanoclay insertion. PBAT/0.5% C20AEIPS/NIPS was the more hydrophilic membrane (37°) with better mechanical properties proven by statistical analysis. The cost analysis showed that EIPS/NIPS membranes production cost per square meter (m2) was lower (US$ 73.4–73.8) than dip coating (US$ 89.0–99.2). The EIPS/NIPS method was the most economically and statistically advantageous, and its properties can favor future applications for PTEs removal in aqueous media.

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Section: Resultscontrasting

confidence: 60%

Section: Thermogravimetric Analysis (Tga)contrasting

confidence: 62%

Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Zanini,

Ferreira,

Barbosa

et al. 2023

J of Applied Polymer Sci

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“…The structure observations are confirmed by the impact tests results, where the impact resistance for PLA-PBAT materials was higher than for pure PLA. However, for other studies where plastic deformation mechanism was revealed, the impact resistance was improved several time [89]. The appearance of the composite structure presented in the Figure 10 is dominated by the presence of the flax fibers.…”

Section: Composite Structure-scanning Electron Microscopy Analysismentioning

confidence: 78%

Development of Toughened Flax Fiber Reinforced Composites. Modification of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends by Reactive Extrusion Process

Andrzejewski

Nowakowski

2021

Materials

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The presented study focuses on the development of flax fiber (FF) reinforced composites prepared with the use of poly(lactic acid)/poly(butylene adipate-co-terephthalate)—PLA/PBAT blend system. This type of modification was aimed to increase impact properties of PLA-based composites, which are usually characterized by high brittleness. The PLA/PBAT blends preparation was carried out using melt blending technique, while part of the samples was prepared by reactive extrusion process with the addition of chain extender (CE) in the form of epoxy-functionalized oligomer. The properties of unreinforced blends was evaluated using injection molded samples. The composite samples were prepared by compression molding technique, while flax fibers reinforcement was in the form of plain fabric. The properties of the laminated sheets were investigated during mechanical test measurements (tensile, flexural, impact). Differential scanning calorimetry (DSC) analysis was used to determine the thermal properties, while dynamic mechanical thermal analysis (DMTA) and heat deflection temperature (HDT) measurements were conducted in order to measure the thermomechanical properties. Research procedure was supplemented with structure evaluation using scanning electron microscopy (SEM) analysis. The comparative study reveals that the properties of PLA/PBAT-based composites were more favorable, especially in the context of impact resistance improvement. However, for CE modified samples also the modulus and strength was improved. Structural observations after the impact tests confirmed the presence of the plastic deformation of PLA/PBAT matrix, which confirmed the favorable properties of the developed materials. The use of PBAT phase as the impact modifier strongly reduced the PLA brittleness, while the reactive extrusion process improves the fiber-matrix interactions leading to higher stiffness and strength.

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“…This helps to improve the compatibility between PLA and PBAT. Other authors [ 23 ] introduced modified clay into PLA/PBAT to improve the properties of the blends. Hydrogen bonding was suspected from interactions between hydroxyl groups from clay interlayer galleries and PLA/PBAT blends.…”

Section: Introductionmentioning

confidence: 99%

Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT

2021

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In order to improve the properties of biodegradable polylactide (PLA), mixtures with polybutylene adipate-co-terephthalate (PBAT) were prepared. PLA is a bio-based and renewable biodegradable material, made from starch. PBAT is a biodegradable polyester for compostable film. In order to improve the composite properties, two types of additives were implemented via melt mixing, a chain extender (CE) and montmorillonite (MMT). CE was used as an interfacial modifier to enhance the adhesion between components. Montmorillonite is a widely studied clay added to polymer nanocomposites. Due to the lamellar structure, it improves the barrier properties of materials. PLA/PBAT films were oriented in the extrusion process and the amounts of filler introduced into the PLA/PBAT nanocomposites were 1.0, 3.0, and 5.0%. The improvement in the PLA barrier properties by the addition of PBAT and 5% of MMT was confirmed as the oxygen permeability decreased almost by a factor of 3. The addition of the biodegradable polymer, chain extender, montmorillonite, and the implemented orientation process resulted in a decrease in composite viscosity and an increase in the PLA crystallinity percentage (up to 25%), and the wettability tests confirmed the synergic behavior of the selected polymer blend.

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Effect of Modified Clay on the Morphological and Thermal Properties of PLA/PBAT Nanocomposites.

Cited by 4 publications

References 10 publications

Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Development of Toughened Flax Fiber Reinforced Composites. Modification of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends by Reactive Extrusion Process

Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT

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