STUDI BANDING BLENDING SELULOSA ASETAT DENGAN PATI JAGUNG SERTA KARAKTERISASI MEKANIKNYA

• Main Author: Heryawan
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/4924
• Institution: Institut Teknologi Bandung

<b>Abstract :</b><p align="justify"> <br /> <br /> Cellulose acetate and corn starch are biodegradable natural polymer, which is more plastic by blending these material with adding plasticizer dioctyl ftalate (DOP). This material is treated to be able to be apilied for injection molding machine.<p align="justify"> <br /> <br /> Blending temperature was Informed by DTA analysis, namely 172 °C, and then celluose acetate and corn starch were blended by comparison 3 : 5, 4 : 4, and 5 : 3 with adding dioctyl ftalate 2 % w/w, 4 % w/w, 6 %w/w and 8 % w/w. The results were made tension tests and hardness tests specimen by using Hot Press, tension tests specimen were made under condition temperature 174 °C by pressing 4 ton for 5 minute, 6 ton for 10 minute, and 8 ton for 5 minute, hardness tests specimen were made under condition temperature 174 °C by pressing 4 ton and all specimen were characterized. The results of these characterization inform process condition and optimum composition .<p align="justify"> <br /> <br /> The blending product were apilied to injection molding machine to be made hardness test specimen under condition 200 °C and pressure 8 bar, the highest and the lowest value for hardness number were chosen to be seen structure micro.<p align="justify"> <br /> <br /> From tension test and hardness test was informed the highest of strength at break and hardness number for composition cellulose acetate : corn starch = 4 : 4, this is caused by the most optimum for making hydrogen bonding between acetyl group and hydroxyl group and micro structure show the least of pores quantity.<p align="justify"> <br />