{"id":3887,"date":"2015-04-16T03:10:00","date_gmt":"2015-04-16T03:10:00","guid":{"rendered":"https:\/\/chem.ui.ac.id\/?p=3887"},"modified":"2025-08-06T03:11:51","modified_gmt":"2025-08-06T03:11:51","slug":"physics-seminar-biodegradable-plastic-from-cassava-waste-with-the-addition-of-chitosan-from-crab-shells-to-improve-the-physical-properties-of-materials","status":"publish","type":"post","link":"https:\/\/chem.ui.ac.id\/id\/physics-seminar-biodegradable-plastic-from-cassava-waste-with-the-addition-of-chitosan-from-crab-shells-to-improve-the-physical-properties-of-materials\/","title":{"rendered":"Seminar Fisika: Plastik Biodegradable dari Ampas Singkong dengan Penambahan Kitosan dari Cangkang Kepiting untuk Memperbaiki Sifat Fisis Bahan"},"content":{"rendered":"<p>Acara seminar rutin yang dilaksanakan oleh Departemen Fisika-UI pada pekan Rabu 15 April 2015 mengangkat topik yang berjudul \u201cPlastik Biodegradable dari Ampas Singkong dengan Penambahan Kitosan dari  Cangkang Kepiting untuk Memperbaiki Sifat Fisis Bahan\u201d, dengan pembicara Dr. Djonaedi Saleh. Secara mendasar, pembahasan dari seminar mencakup hasil penelitian yang telah dilakukan dalam pekan terakhir. Seminar tersebut dipaparannya secara singkat mengenai hasil penelitian di bidang ilmu bahan-bahan pada lingkup penelitian biomaterial yang beliau kerjakan. Seminar dihadiri oleh para staf pengajar dan mahasiswa S1, S2 dan S3.<\/p>\n\n\n\n<p>Berikut ini merupakan abstraksi dari isi seminar yang telah berlangsung:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/chem.ui.ac.id\/wp-content\/uploads\/2025\/08\/Fisika_UI_Seminar_Dr_Djonaedi_2-1024x576-1.jpg\" alt=\"\" class=\"wp-image-3904\" srcset=\"https:\/\/chem.ui.ac.id\/wp-content\/uploads\/2025\/08\/Fisika_UI_Seminar_Dr_Djonaedi_2-1024x576-1.jpg 1024w, https:\/\/chem.ui.ac.id\/wp-content\/uploads\/2025\/08\/Fisika_UI_Seminar_Dr_Djonaedi_2-1024x576-1-300x169.jpg 300w, https:\/\/chem.ui.ac.id\/wp-content\/uploads\/2025\/08\/Fisika_UI_Seminar_Dr_Djonaedi_2-1024x576-1-768x432.jpg 768w, https:\/\/chem.ui.ac.id\/wp-content\/uploads\/2025\/08\/Fisika_UI_Seminar_Dr_Djonaedi_2-1024x576-1-18x10.jpg 18w, https:\/\/chem.ui.ac.id\/wp-content\/uploads\/2025\/08\/Fisika_UI_Seminar_Dr_Djonaedi_2-1024x576-1-600x338.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Material plastik merupakan material penting di dalam industri pengemasan dan manufacturing. Saat ini sumber bahan baku material plastik yang berasal dari minyak bumi mulai digantikan dengan bahan baku material yang berasal dari tumbuhan dan hewan untuk mengurangi polusi dan mempercepat proses degradasi. Plastik biodegradable merupakan bahan polimer yang mudah mengalami dekomposisi oleh alam sehingga tidak menimbulkan limbah yang berbahaya bagi kehidupan manusia. Plastik biodegradable dapat diproduksi dari bahan yang mengandung serat(selulosa) atau tepung pati(starch). Ampas (onggok) singkong yang merupakan limbah padat dari industri tepung tapioka mengandung serat kasar 35 %, sedikit  protein dan HCN. Untuk membuat ampas singkong menjadi plastik biodegradable diperlukan sorbitol sebagai plasticizer. Kitosan merupakan hasil ekstrak  limbah cangkang kepiting atau kulit udang. Dengan menambahkan kitosan pada plastik biodegradable akan menambah kekuatan tarik, ketahanan sobek dan menunda kerusakan yang diakibatkan oleh serangga dan jamur.<\/p>","protected":false},"excerpt":{"rendered":"<p>The routine seminar held by the Physics Department-UI on Wednesday, April 15, 2015 raised a topic entitled &#8220;Biodegradable Plastic from Cassava Dregs with the Addition of Chitosan from Crab Shells to Improve the Physical Properties of Materials&#8221;, with speaker Dr. Djonaedi Saleh. Basically, the discussion of the seminar covered the results of research that had [&hellip;]<\/p>","protected":false},"author":6,"featured_media":3893,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3887","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Physics Seminar: Biodegradable Plastic from Cassava Waste with the Addition of Chitosan from Crab Shells to Improve the Physical Properties of Materials - Departement of Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chem.ui.ac.id\/id\/physics-seminar-biodegradable-plastic-from-cassava-waste-with-the-addition-of-chitosan-from-crab-shells-to-improve-the-physical-properties-of-materials\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Physics Seminar: Biodegradable Plastic from Cassava Waste with the Addition of Chitosan from Crab Shells to Improve the Physical Properties of Materials - Departement of Chemistry\" \/>\n<meta property=\"og:description\" content=\"The routine seminar held by the Physics Department-UI on Wednesday, April 15, 2015 raised a topic entitled &#8220;Biodegradable Plastic from Cassava Dregs with the Addition of Chitosan from Crab Shells to Improve the Physical Properties of Materials&#8221;, with speaker Dr. Djonaedi Saleh. 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