Sustainable Materials with Improved Biodegradability and Toughness from Blends of Poly(Lactic Acid), Pineapple Stem Starch and Modified Natural Rubber

Tessanan, Wasan; Phinyocheep, Pranee; Amornsakchai, Taweechai

doi:10.3390/polym16020232

Cited by 5 publications

(2 citation statements)

References 54 publications

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“…In addition, water can also cause the polymer mixture to swell, which may lead to a reduction in its dimensional stability. Therefore, it is important to understand the water absorption properties of the polymer blend to ensure it performs optimally in various environments [41,42].…”

Section: Determination Of Water Absorptionmentioning

confidence: 99%

Gelatine Blends Modified with Polysaccharides: A Potential Alternative to Non-Degradable Plastics

Dzeikala,

Prochon,

Sedzikowska

2024

IJMS

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Non-degradable plastics of petrochemical origin are a contemporary problem of society. Due to the large amount of plastic waste, there are problems with their disposal or storage, where the most common types of plastic waste are disposable tableware, bags, packaging, bottles, and containers, and not all of them can be recycled. Due to growing ecological awareness, interest in the topics of biodegradable materials suitable for disposable items has begun to reduce the consumption of non-degradable plastics. An example of such materials are biodegradable biopolymers and their derivatives, which can be used to create the so-called bioplastics and biopolymer blends. In this article, gelatine blends modified with polysaccharides (e.g., agarose or carrageenan) were created and tested in order to obtain a stable biopolymer coating. Various techniques were used to characterize the resulting bioplastics, including Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA)/differential scanning calorimetry (DSC), contact angle measurements, and surface energy characterization. The influence of thermal and microbiological degradation on the properties of the blends was also investigated. From the analysis, it can be observed that the addition of agarose increased the hardness of the mixture by 27% compared to the control sample without the addition of polysaccharides. In addition, there was an increase in the surface energy (24%), softening point (15%), and glass transition temperature (14%) compared to the control sample. The addition of starch to the gelatine matrix increased the softening point by 15% and the glass transition temperature by 6%. After aging, both compounds showed an increase in hardness of 26% and a decrease in tensile strength of 60%. This offers an opportunity as application materials in the form of biopolymer coatings, dietary supplements, skin care products, short-term and single-contact decorative elements, food, medical, floriculture, and decorative industries.

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Section: Determination Of Water Absorptionmentioning

confidence: 99%

Gelatine Blends Modified with Polysaccharides: A Potential Alternative to Non-Degradable Plastics

Dzeikala,

Prochon,

Sedzikowska

2024

IJMS

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“…The hydrophilic nature of TPS [10] and moisture-induced 2 of 18 recrystallization (retrogradation) usually lead to an increase in rigidity and separation of the polymer/solvent phases [11,12]. In order to remedy these disadvantages, TPS can be mixed with hydrophobic polymers [13]. Several factors influence the mechanical properties of these blends: starch characteristics like granule morphology, the amylose to amylopectin ratio, the type and quantity of compatibilizers, use of inorganic fillers, using recycled polymers, the type of plasticizers, and the processing technique [14].…”

Section: Introductionmentioning

confidence: 99%

Obtaining and Characterizing New Types of Materials Based on Low-Density Polyethylene and Thermoplastic Starch

Stelescu,

Oprea,

Motelica

et al. 2024

J. Compos. Sci.

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Significant interest is devoted to the development of new polymer blends by using concepts of the circular economy. Such materials have predetermined properties, are easy to recycle, ecological, and have a low carbon footprint. This research presents obtaining and characterization of polymer blends based on low-density polyethylene (LDPE) and thermoplastic starch (TPS). In the first stage, TPS was obtained through the gelatinization process, and, in the second stage, mixtures of LDPE and TPS were obtained through a melt mixing process at 150 °C for 7 min. The physical–mechanical characteristics of the samples, like hardness, elongation at break, rebound resilience, and tensile strength, were determined. The sample containing maleic anhydride grafted low-density polyethylene (LDPE-g-MA) as a compatibilizer shows improvements in elongation at break and tensile strength (by 6.59% and 40.47%, respectively) compared to the test sample. The FTIR microscopy maps show that samples containing LDPE-g-MA are more homogeneous. The SEM micrographs indicate that TPS-s is homogeneously dispersed as droplets in the LDPE matrix. From the thermal analysis, it was observed that both the degree of crystallinity and the mass loss at high temperature are influenced by the composition of the samples. The melt flow index has adequate values, indicating good processability of the samples by specific methods (such as extrusion or injection).

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Advancements in polylactic acid research: From material properties to sustainable applications

Kaptan,

Kartal

2024

European Mechanical Science

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This review article provides a comprehensive examination of the latest advancements in the research and development of Polylactic Acid (PLA) and its composites, with a focus on enhancing material properties and exploring sustainable applications. As a biodegradable and bio-base polymer, PLA has emerged as a promising alternative to conventional petroleum-based plastics across various industries, including packaging, 3D printing, and biomedical fields. The review delves into studies investigating the effects of environmental conditions on PLA’s hydrolytic stability and structural integrity, as well as the benefits of blending PLA with other biopolymers to improve its mechanical properties. It also covers research on optimizing three dimensional printing parameters for PLA, underscoring the importance of raster orientation and print layer thickness in achieving desired mechanical strength and object durability. Additionally, the incorporation of nanofillers and copolymers is discussed as a strategy for enhancing PLA’s moisture resistance and overall performance. By summarizing key findings from a wide range of studies, this article aims to shed light on the significant progress made in PLA research, while pointing out future research directions to resolve existing limitations and fully capitalize on PLA’s potential as a green material solution. To better cater to the needs of design engineers, this review highlights how advancements in PLA research can be directly applied to improve product design and functionality. Specifically, it discusses the enhanced mechanical properties, sustainability benefits, and versatility of PLA in various industrial applications, providing engineers with a deeper understanding of how to utilize PLA in eco-friendly design solutions.

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Sustainable Materials with Improved Biodegradability and Toughness from Blends of Poly(Lactic Acid), Pineapple Stem Starch and Modified Natural Rubber

Cited by 5 publications

References 54 publications

Gelatine Blends Modified with Polysaccharides: A Potential Alternative to Non-Degradable Plastics

Gelatine Blends Modified with Polysaccharides: A Potential Alternative to Non-Degradable Plastics

Obtaining and Characterizing New Types of Materials Based on Low-Density Polyethylene and Thermoplastic Starch

Advancements in polylactic acid research: From material properties to sustainable applications

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