At present, the air pollution from burning and destruction of corn in north area. The more severe, and directly affect the health of the people, causing the disease. Allergy, asthma, tuberculosis, cancer, etc. Therefore, sinus from the impact, therefore, เป็นโจทย์ source of research of dietary fiber from corn cob purple fill level 0 - 40% (w / W). Mixed with polylacticacid in the production process of plastics. Then evaluate the properties of various aspects of the plastics suitable for use in packaging materials. Experiments indicated that adding corn cob purple more tend to the plastic sheet. Glass transition temperature and the melting temperature is increased, the fill level โพดม่วง cob (20 (w / W) can produce plastic packaging molded with biological properties. The following is 1.5x10-4 M / m2.mmHg.day 18.02 0.33 MPa, edge, edge, 29.42 0.05 ͦ C 145.84 edge 0.30 ͦ C respectively and biodegradable hundred? 34.97 edge 1.1 time 10 week. Adding corn fibre purple rise can increase the tensile strength of reduce the permeability of water vapor, slow down the degradation of plastic sheet). The degradation of the plastic sheet over time 10 week.) Biodegradable 20% - 70.Key words: Plastic biological, polylacticacid, corn cobs, violet, carbon (methyl cellulose from Bagasse
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