In the purpose to increase the added value of the quality marine natural polymer, modification of CM-chitosan has been carried out by copolymerization radiation with acrylic acid to prepare a new material.

1. Gatot Trimulyadi Rekso Pusat AplikasiTeknologi Isotop dan Radiasi Badan Tenaga Nuklir Nasional Jl. Cinere, Ps Jumat PO Box 7002 JKSL, Jakarta 12070 Fax : 021 7513270. E-mail : [email_address]

5. Pembuatan chitosan Chitin Chitosan Conc.NaOH at boil. Temp.aq . Crustacean Shells 1. dil. HCl t at room temp. 2. dil. NaOH at boil. temp .

6. Difinition of chitin/chitosan Chitin(Chitosan) contains glucosamine(GlcNAc) residues Temporal assignment of chitin/chitosan is proposed to show by The degree of deacetylation. Acetyl group 100 residues ・ Molecular weight ・ Destribution of residues (GlcNAc) (GlcN) m n

7. Chemical structures chitosan related polysaccharides

13. Hasil dan pembahasan Tabel 1. Karakter khitosan hasil isolasi

14. Gambar 1 . Film KM-kitosan akrilat yang dihasilkan

15. Fraksi Padatan

16. Pengukuran gugus fungsi dengan FTIR Gambar 3. Spektrum FT-IR film KM-khitosan yang ditambahkan 3,0% monomer asam akrilat Gambar 2. Spektrum FT-IR film KM-khitosan

17. Kekuatan Tarik

18. Sifat Termal KM-khitosan –akrilat ( Differential Scanning Calorimetry ) Gambar 6 Termogram DSC film KM-khitosan-asam akrilat

19. Tabel 2 dibawah ini menunjukkan puncak titik leleh dari film khitosan

20. Kesimpulan