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Item Metadata only Development of Biodegradable Thermosetting Plastic Using Dialdehyde Pineapple Stem Starch(2023-09-01) Tessanan W.; Phinyocheep P.; Amornsakchai T.; Mahidol Universitycontents ranging from 10% to 90%. Leveraging these dialdehyde starches, thermosetting plastics were meticulously developed by incorporating glycerol as a plasticizer. Concurrently, unmodified pineapple stem starch was employed as a control to produce... thermoplastic material under identical conditions. The objective of streamlining the processing steps was pursued by adopting a direct hot compression molding technique. This enabled the transformation of starch powders into plastic sheets without the needItem Metadata only 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 UniversityPoly(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 PLAPublication Metadata only Simple biodegradable plastic screen-printing for microfluidic paper-based analytical devices(2021-03-15) Jaruwan Mettakoonpitak; Kanokwan Khongsoun; Nithiya Wongwan; Supaporn Kaewbutdee; Atitaya Siripinyanond; Araya Kuharuk; Charles S. Henry; Rambhai Barni Rajabhat University; Mahidol University; Colorado State UniversityThe goal of using microfluidic paper-based analytical devices (μPADs) in remote areas has prompted the development of uncomplicated, affordable, and environmentally-friendly fabrication methods. Here, screen-printed biodegradable polycaprolactonePublication Metadata only 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 UniversityCrystalline 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 overItem Metadata only Properties of poly(lactic acid)/cellulose nanofiber biocomposites: Effect of polymeric plasticizers(2023-01-01) Srisawat K.; Harnnarongchai W.; Sirisinha C.; Sirisinha K.; Mahidol UniversityBiodegradable composites from renewable resources have been of much interest in many industries. This work aims to develop a poly(lactic acid) (PLA)-based composite with a good balance of stiffness and impact strength by combined utilization... of cellulose nanofiber (CNF) and polymeric plasticizer. The composites were prepared by a melt-compounding process. CNF, having diameters of approximately 10 nm and lengths of several microns, was extracted from wood sawdust and used without any surfaceItem Metadata only Toward a Circular Bioeconomy: Development of Pineapple Stem Starch Composite as a Plastic-Sheet Substitute for Single-Use Applications(2023-05-01) Thongphang C.; Namphonsane A.; Thanawan S.; Chia C.H.; Wongsagonsup R.; Smith S.M.; Amornsakchai T.; Mahidol UniversityPlastic waste poses a significant challenge for the environment, particularly smaller plastic products that are often difficult to recycle or collect. In this study, we developed a fully biodegradable composite material from pineapple field waste... that is suitable for small-sized plastic products that are difficult to recycle, such as bread clips. We utilized starch from waste pineapple stems, which is high in amylose content, as the matrix, and added glycerol and calcium carbonate as the plasticizerItem Metadata only Facile production of recycled paper bio-foam via citric acid crosslinking: an eco-friendly thermal insulation packaging material(2024-01-01) Itkor P.; Lee Y.S.; Singh A.K.; Boonsiriwit A.; Ngamlerst C.; Lee M.; Choi S.; Itkor P.; Mahidol UniversityThe increasing environmental concerns associated with the use of plastic foams in the food supply chain necessitate the exploration of alternative solutions. Among these, bio-foams derived from biodegradable raw materials have emerged as promising....35 ± 0.61 kPa of compressive strength and 239.85 ± 20.13 kPa of compressive modulus which is comparable to the commercial plastic foam and bio-foams made from freeze drying technique. An optimum CA:ONP ratio that could enhance the properties of ONP-CAsPublication Metadata only Polylactic acid glycolysate as a cross-linker for epoxidized natural rubber(2016-03-01) Phrutsadee Sukpuang; Mantana Opaprakasit; Atitsa Petchsuk; Pramuan Tangboriboonrat; Punchapat Sojikul; Pakorn Opaprakasit; Chulalongkorn University; Thailand National Science and Technology Development Agency; Mahidol University; Thammasat Universityrange from 20 wt% to 33 wt%, depending on the GPLA chain length. Because of their biodegradability, biocompatibility, and the ability to tune up their structures and properties, the cured rubber materials have high potential for use in various biomedical