Characterization of Rice Husk Biofibre-Reinforced Recycled Thermoplastic Blend Biocomposite

In this century, the developing country has a high potential towards the growth of green composites, and therefore there is significant achievement in green technology especially in the field of building constructions and automotive because of the environment and sustainability issues. The market for development of advanced biocomposite materials produced from biomass and recyclable post-consumer plastics is increasing. Natural fibre-reinforced biocomposites based on rice husk biofibre (RHB), recycled high-density polyethylene (rHDPE) and recycled polyethylene terephthalate (rPET) were prepared through a two-step extrusion and hot pressing. The influence of thermoplastic blend (TPB) matrix types (uncompatibilized and compatibilized with 5 parts per hundred compound (phc) ethylene-glycidyl methacrylate (E-GMA) copolymer) and high fibre contents of 50, 60, 70 and 80 wt% RHB on the composite properties was studied. Maleic anhydride polyethylene (MAPE) was added as a coupling agent to enhance the interfacial adhesion of the fibre-matrix phases. Results showed that water absorption, thickness swelling (TS) and tensile and flexural properties enhanced tremendously with the increase of rice husk filler loadings. Biocomposites based on compatibilized blend matrix exhibited higher mechanical properties and dimensional stability than those based on uncompatibilized ones. Thermal analysis results from thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) indicated the notable improvement in thermal stability as the added rice husk (RH) fibre content increased. From these results, we can conclude that RHF can work well with rHDPE/rPET thermoplastic blend for manufacturing high loading biocomposite products

Penderia pH Berkomputer Menggunakan Gentian Optik

This paper discusses the development of a pH sensor using optical fibre. Optical fibre was used to guide light from the light source, LED, to the probe and eventually to a photodetector, i.e. solid state photodiode. A few drops of phenolptalin were added to the solution before the measurement was made. This sensor can be used for acid-base titration. The sensor was interfaced to a personal computer to facilitate the data retrieval process

Kesan Suhu dan Kadar Terikan ke atas Sifat Regangan Komposit Getah Asli Tennoplastik (HDPE/NR) Berpenguat Gentian Karbon Pendek

Thermoplastic natural rubber (TPNR) composite was prepared using melt blending method. The TPNR composites have been made with carbon fibers with random planar orientation both with treated and untreated with 1M sulfuric acid. The effect of surface treatment on the carbon fibre, strain rate and temperature on mechanical properties of the composites at various fibre loading (10%-40%) was investigated. It was found that the tensile properties of surface treated carbon fibre TPNR composite increased linearly with fiber concentration and decreased as temperature increased. The tensile stress also increased linearly with strain rate from 10-3 to 10-1 S-I. SEM micrograph on the fractured surface has shown that the sulfuric treated fibre had improved the fiber-matrix adhesion of TPN

PERFORMA PERTUMBUHAN DAN KELANGSUNGAN HIDUP BENIH IKAN BETUTU (Oxyeleotris marmorata ) YANG DIPELIHARA PADA WARNA WADAH DAN SISTEM AERASI YANG BERBEDA

This research aimed to evaluate the effect of container use and aeration on marbled goby's growth and survival. Evaluate aerated containers and optimal containers in the marbled goby culture, which are expected to increase their growth and survival. This study uses the experimental method Complete Complete Random Design with six handling and three replications. The treatment given is on the transparent container with aeration (A), transparent containers without aeration (B), black containers with aeration (C), black containers without aeration (D), blue containers with aeration (E),  blue containers without aeration (F). This research was conducted in March - April 2018 in the Aquaculture Laboratory, Bangka Belitung University. The main parameters measured were the growth and survival of marbled goby seeds. The results showed that the culture on a different color of the containers and aeration system did not affect the growth and survival of marbled goby (Oxyeleotris marmorata)  size of fish seed 11 – 15 cm fish density of 4 fish in each treatment.Tujuan dari penelitian ini adalah menguji pengaruh penggunaan warna wadah dan aerasi terhadap pertumbuhan dan kelangsungan hidup ikan Betutu. Menguji warna wadahteraerasi dan wadah optimal dalam pemeliharaan ikan Betutu yang diharapkandapat meningkatkan pertumbuhan dan kelangsungan hidupnya. Penelitian ini menggunakan metode eksperimental Rancangan Acak Lengkap Tunggal dengan enam perlakuan dan tiga kali ulangan. Perlakuan yang diberikan yaitu Perlakuan A (Pemeliharaan pada transparan dengan aerasi, Perlakuan B (Pemeliharaan pada wadah transparan tanpa aerasi), Perlakuan C (Pemeliharaan pada wadah hitam dengan aerasi), Perlakuan D (Pemeliharaan pada wadah hitam tanpa aerasi), Perlakuan E (Pemeliharaaan pada wadah biru dengan aerasi), Perlakuan F (Pemeliharaan pada wadah biru tanpa aerasi). Penelitian ini dilaksanakan selama 30 hari pada bulan Maret - April 2018 di Laboraturium Akukultur, Universitas Bangka Belitung. Parameter utama yang diukur yaitu pertumbuhan dan kelangsungan hidup benih ikan Betutu. Hasil penelitian menunjukkan bahwa Pemeliharaan pada warna wadah dan sistem aerasi yang berbeda tidak berpengaruh terhadap pertumbuhan dan kelangsungan hidup benih ikan Betutu (Oxyeleotris marmorata) ukuran benih 11-15 cm dengan kepadatan ikan sebanyak 4 ekor di setiap perlakuan

Mechanical, Thermal Stability and Water Absorption Properties of Recycled Thermoplastic Blend Nanocomposites: Comparison of Nanoclay and Carbon Nanotube

This present paper investigates the influence of clay (Cloisite 10A) and multiwalled carbon nanotubes (MWCNT) loading for the tensile, flexural, thermal stability and water absorption properties of recycled thermoplastic blend made from recycled high-density polyethylene (rHDPE) and recycled polyethylene terephthalate (rPET). The nanocomposites were prepared via extrusion blending technique by using extruder and compressed using hot and cold press molding machine. The findings showed that the sample with 1 phr of Cloisite 10A and 4 phr of MWCNT showed the optimum of tensile strength at 13.9 MPa and 14.5 MPa as compared to other loadings. The flexural strength exhibited inconsistent trend with the increasing of Cloisite 10A and MWCNT content. The addition of Cloisite 10A and MWCNT-reinforced nanocomposite showed better thermal stability than pure polymer blend. As the increment of Cloisite 10A and MWCNT loading, the percentages of water uptake increased but the values were still lower than the neat thermoplastic blend

Kinerja pertumbuhan dan kelangsungan hidup benih ikan betutu (oxyeleotris marmorata ) yang di pelihara pada warna wadah dan sistem aerasi yang berbeda

Ikan betutu (Oxyeleotris marmorata) merupakan salah satu komoditas ikan lokal yang memiliki nilai ekonomis yang cukup tinggi dan sangat diminati oleh masyarakat kota besar baik di dalam dan luar negeri. Tujuan dari penelitian ini adalah menguji pengaruh penggunaan warna wadah dan aerasi terhadap pertumbuhan dan kelangsungan hidup ikan betutu. Menguji warna wadah teraerasi dan wadah optimal dalam pemeliharaan ikan betutu yang diharapkan dapat meningkatkan pertumbuhan dan kelangsungan hidupnya. Penelitian ini menggunakan metode eksperimental Rancangan Acak Lengkap Tunggal dengan enam perlakuan dan tiga kali ulangan. Perlakuan yang diberikan yaitu Perlakuan A (Pemeliharaan pada transparan dengan aerasi, Perlakuan B (Pemeliharaan pada wadah transparan tanpa aerasi), Perlakuan C (Pemeliharaan pada wadah hitam dengan aerasi), Perlakuan D (Pemeliharaan pada wadah hitam tanpa aerasi), Perlakuan E (Pemeliharaaan pada wadah biru dengan aerasi), Perlakuan F (Pemeliharaan pada wadah biru tanpa aerasi). Penelitian ini dilaksanakan selama 30 hari pada bulan Maret - April 2018 di Laboraturium Akukultur, Universitas Bangka Belitung. Parameter utama yang diukur yaitu pertumbuhan dan kelangsungan hidup benih ikan betutu. Hasil penelitian menunjukkan bahwa Pemeliharaan pada warna wadah dan sistem aerasi yang berbeda tidak berpengaruh terhadap pertumbuhan dan kelangsungan hidup benih ikan betutu (Oxyeleotris marmorata) ukuran benih 11-15 cm dengan kepadatan ikan sebanyak 4 ekor disetiap perlakuan

Mechanical, Thermal Stability and Water Absorption Properties of Recycled Thermoplastic Blend Nanocomposites: Comparison of Nanoclay and Carbon Nanotube

This present paper investigates the influence of clay (Cloisite 10A) and multiwalled carbon nanotubes (MWCNT) loading for the tensile, flexural, thermal stability and water absorption properties of recycled thermoplastic blend made from recycled high-density polyethylene (rHDPE) and recycled polyethylene terephthalate (rPET). The nanocomposites were prepared via extrusion blending technique by using extruder and compressed using hot and cold press molding machine. The findings showed that the sample with 1 phr of Cloisite 10A and 4 phr of MWCNT showed the optimum of tensile strength at 13.9 MPa and 14.5 MPa as compared to other loadings. The flexural strength exhibited inconsistent trend with the increasing of Cloisite 10A and MWCNT content. The addition of Cloisite 10A and MWCNT-reinforced nanocomposite showed better thermal stability than pure polymer blend. As the increment of Cloisite 10A and MWCNT loading, the percentages of water uptake increased but the values were still lower than the neat thermoplastic blend

Effect of the silane coupling agent on the hybrid thermoplastic natural rubber composites filled rice husk and oil palm empty fruit bunch

The used of lignocellulosic material as replacement in composites is currently generating much interest in most application. Lignocellulosic-derived fillers have many advantages compared to inorganic fillers. The advantages of natural filler receiving increasing attention for industrial application due to cost effectiveness,low density, high specific strength, bio-degradability and free from health hazard