Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí khoa học vật lý quốc tế đề tài: LDPE-Isophthalic Acid-Modified Egg Shell Powder Composites (LDPE/ESPI) | Journal of Physical Science Vol. 20 1 87-98 2009 87 LDPE-Isophthalic Acid-Modified Egg Shell Powder Composites LDPE ESPi Siti Shuhadah and A.G. Supri School of Materials Engineering Universiti Malaysia Perlis UniMAP 02600 Jejawi Perlis Malaysia Corresponding author shuhadah@student.unimap.edu.my Abstract The effects of chemical modification on the mechanical properties morphology and water absorption of low density polyethylene egg shell powder composites were studied. The mechanical and morphological properties of low density polyethylene egg shell powder composites with and without modifications NaOH-isophthalic acid have been characterised by an Instron machine and by scanning electron microscopy SEM . The composites were prepared by using a Z-blade mixer at 180 C and at a rotor speed of 50 rpm for 6 min. The interfacial adhesion has enhanced the tensile strength and water absorption resistance of the LDPE modified egg shell powder composites LDPE ESPI as compared to LDPE unmodified egg shell powder composites LDPE ESP . Both the introduction of interfacial adhesion to composites and better interaction adhesion between LDPE and egg shell powder are responsible for the improvement of the mechanical properties of the LDPE ESPI as evidenced by SEM on the tensile fracture surface of the composites. Keywords egg shell powder low density polyethylene isophthalic acid chemical modifications mechanical properties Abstrak Kesan pengubahsuai secara kimia ke atas sifat-sifat mekanikal morfologi dan keterapan air bahan komposit serbuk kulit telur dikaji. Sifat-sifat mekanikal dan morfologi LDPE serbuk kulit telur yang diubahsuai ESPI dengan asid isofetalik dan yang tidak diubah suai ESP telah dikaji menggunakan mesin Instron dan mikroskop pengimbas elektron SEM . Bahan komposit disedia menggunakan pengaduk Z-blade pada suhu 1800C dan pada kelajuan 50 rpm selama 6 min. Didapati sentuhan dalaman telah meningkatkan kekuatan tensil dan rintangan keterapan air komposit LDPE ESPI
