{"id":5708,"date":"2021-12-20T14:43:40","date_gmt":"2021-12-20T07:43:40","guid":{"rendered":"https:\/\/www.mtec.or.th\/annual-report2021\/?p=5708"},"modified":"2021-12-20T16:35:55","modified_gmt":"2021-12-20T09:35:55","slug":"thermoplastic-starch-produced-by-twin-screw-extrusion-process","status":"publish","type":"post","link":"https:\/\/www.mtec.or.th\/annual-report2021\/en\/thermoplastic-starch-produced-by-twin-screw-extrusion-process\/","title":{"rendered":"Thermoplastic starch produced by twin screw extrusion process"},"content":{"rendered":"
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Research background<\/span><\/h3>

Siam Modified Starch Co., Ltd. has expertise in tapioca\u00a0<\/span><\/span>starch production. The company places importance on the\u00a0<\/span>problem of global climate change, as well as plastic waste\u00a0<\/span>contamination that affects creatures, environment, and\u00a0<\/span>society. The company, therefore, is interested in the concept\u00a0<\/span>of the BCG (Bio-Circular-Green Economy) and wanted to\u00a0<\/span>mitigate non-degradable plastic waste problems.<\/span><\/p>

The company has cooperated with the Plastics\u00a0<\/span><\/span>Technology Research Team of MTEC in the development\u00a0<\/span>of biodegradable materials from tapioca starch since the\u00a0<\/span>research team has expertise in twin screw extrusion by\u00a0<\/span>designing the screws that can be melted and kneaded various\u00a0<\/span>polymer materials. Thus, a research project is initiated in\u00a0<\/span>order to develop the manufacturing process for the\u00a0<\/span>preparation of thermoplastic starch prototype (thermoplastic\u00a0<\/span>starch, TPS) with the twin screw extruder at the pilot scale.<\/span><\/p>

The research team has employed an existing\u00a0<\/span><\/span>formula for a mixture of raw materials consisting of tapioca\u00a0<\/span>starch, water and plasticizer as a reference and then\u00a0<\/span>prepared a compound between thermoplastic starch\u00a0<\/span>and biodegradable polymer (TPS\/biodegradable polymer)\u00a0<\/span>suitable for productions and various applications.<\/span><\/p>

Research objectives<\/span><\/h2>

(1) To gain knowledge of thermoplastic starch production processes and to produce prototypes from a pilot-scale twin screw extrusion process.<\/span><\/p>

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(2) To develop compounds or mixed plastics between thermoplastic starch and biodegradable polymers that are ready to be molded into biodegradable plastic products.<\/span><\/span><\/p>

W<\/span>hat did the research team do?<\/span><\/h2>

The research team has applied the knowledge\u00a0<\/span><\/span>of twin screw extrusion process by designing the screws,\u00a0<\/span>the melting process, and controlling the vacuum system\u00a0<\/span>for the water extraction to convert tapioca starch into\u00a0<\/span>thermoplastic starches, as well as the preparing process\u00a0<\/span>of mixed plastics or ready-to-use compounds. In the final\u00a0<\/span>step, the research team has demonstrated the preparation\u00a0<\/span>of thin film products by the blown film process.<\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Tapioca starch<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Blow-molded film from compound materials between thermoplastic starch and biodegradable polymers<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Research results<\/span><\/h3>\n