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Subject: Chemistry

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Now showing 1 - 6 of 6
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    Sustainable Materials with Improved Biodegradability and Toughness from Blends of Poly(Lactic Acid), Pineapple Stem Starch and Modified Natural Rubber
    (2024-01-01) Tessanan W.; Phinyocheep P.; Amornsakchai T.; Tessanan W.; Mahidol University
    Poly(lactic acid) (PLA), derived from renewable resources, plays a significant role in the global biodegradable plastic market. However, its widespread adoption faces challenges, including high brittleness, hydrophobicity, limited biodegradability... indicated improved compatibility between components. Remarkably, the PLA ternary blends demonstrated superior water resistance and proper biodegradability compared to binary blends. These findings highlight the potential of bio-based plastics, such as PLA
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    Toward a Circular Bioeconomy: Exploring Pineapple Stem Starch Film as Protective Coating for Fruits and Vegetables
    (2023-06-01) Bumrungnok K.; Threepopnatkul P.; Amornsakchai T.; Chia C.H.; Wongsagonsup R.; Smith S.M.; Mahidol University
    In order to reduce our dependence on nonrenewable plastics and solve the problem of non-biodegradable plastic waste, there has been much attention paid to the development of biodegradable plastics from natural resources. Starch-based materials have... be of great interest. In this work, we investigated the properties of films prepared from pineapple stem starch, which has a high amylose content. Pineapple stem starch (PSS) films and glycerol-plasticized PSS films were prepared and characterized using X-ray
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    Nanocomposites based on cassava starch and chitosan-modified clay: Physico mechanical properties and biodegradability in simulated compost soil
    (2017-04-01) Gustavo F. Perotti; Thitisilp Kijchavengkul; Rafael A. Auras; Vera R.L. Constantino; Universidade Federal do Amazonas; Universidade de Sao Paulo - USP; Michigan State University; Mahidol University
    producing flexible, transparent and homogeneous plastics as potential candidates for agricultural purposes. X-ray diffraction and transmission electron microscopy images revealed the presence of both intercalated and exfoliated nanocomposites in all samples... thermoplastic starch. Chitosan deeply affects the conversion of polymer carbon to CO2 through biodegradation. Mineralization values for the sample loaded with 5.0 wt.% of chitosan-modified clay in simulated compost soil showed a reduction of almost 40
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    Manipulating crystallization for simultaneous improvement of impact strength and heat resistance of plasticized poly(L‐lactic acid) and poly(butylene succinate) blends
    (2021-09-01) Todsapol Kajornprai; Supakij Suttiruengwong; Kalyanee Sirisinha; Silpakorn University; Mahidol University
    Crystalline morphology and phase structure play a decisive role in determining the properties of polymer blends. In this research, biodegradable blends of poly(L‐lactic acid) (PLLA) and poly(butylene succinate) (PBS) have been prepared by melt... are plasticized with 5% medium molecular‐weight poly(ethylene glycol), and simultaneously heat‐treated at a temperature close to the cold‐crystallization of PLLA. The plasticized blend annealed at 92 °C for only 10 min exhibits ten‐fold impact strength over
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    Natural colorant incorporated biopolymers-based pH-sensing films for indicating the food product quality and safety
    (2024-05-01) Ekrem Parlak M.; Irmak Sahin O.; Neslihan Dundar A.; Türker Saricaoglu F.; Smaoui S.; Goksen G.; Koirala P.; Al-Asmari F.; Prakash Nirmal N.; Mahidol University
    The current synthetic plastic-based packaging creates environmental hazards that impact climate change. Hence, the topic of the current research in food packaging is biodegradable packaging and its development. In addition, new smart packaging...H indicators and active substances, respectively. This review provides an overview of biodegradable polymers and natural colorants that are being extensively studied for pH-indicating packaging. A comprehensive discussion has been provided on the current status
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    Modified Starch-Based Adhesives: A Review
    (2022-05-01) Watcharakitti J.; Win E.E.; Nimnuan J.; Smith S.M.; Mahidol University
    Consumer trends towards environmentally friendly products are driving plastics industries to investigate more benign alternatives to petroleum-based polymers. In the case of adhesives, one possibility to achieve sustainable production is to use non...-toxic, low-cost starches as biodegradable raw materials for adhesive production. While native starch contains only hydroxyl groups and has limited scope, chemically modified starch shows superior water resistance properties for adhesive applications