Characterization and properties of linear low density polyethylene/poly(vinyl alcohol) blends.

Kesan komposisi adunan, agen sambung-silang, radiasi alur elektron dan gabungan radiasi serta agen sambung silang ke atas sifat-sifat adunan polietilena linear berketumpatan rendah/poli(vinil alkohol) telah dikaji. Sambung silang disediakan menggunakan asid maleik dan 3-(trimetoksisilil)propil metakrilat sebagai agen sambung silang dan dikumil peroksida (DCP) sebagai pemula, sementara trimetilolpropana triakrilat (TMPTA) sebagai agen sambung silang yang dipilih untuk proses radiasi. The effect of blend ratio, crosslinking agent, electron beam irradiation and the combination of irradiation and crosslinking agent on the properties of linear low density polyethylene/poly(vinyl alcohol) blends were investigated. The crosslinking was prepared using maleic acid and 3-(trimethoxysilyl)propyl methacrylate as crosslinking agents and dicumyl peroxide (DCP) as initiator, while trimethylolpropane triacrylate (TMPTA) was crosslinking agent chosen for irradiation process

Potensi Penggunaan Serbuk Getah Kitar Semula Sebagai Pengisi Dan Matriks Di Dalam Penyebatian Getah Asli

Serbuk getah kitar semula (RRP) yang eliperolehi daripada proses penghalusan bola getah dan telur tiruan telah digunakan sebagai pengisi di dalarn penyebatian getah asli (NR). Sifat vulkanizat yang dihasilkan telah elibandingkan dengan pengisi komersial iaitu hitam karbon (CB) dan kalsium karbonat (CaC03). Dari keptitusan, -elidapati masa skorj dan masa pematangan berkurangan manakala tork minimum dan kelikatan Mooney meningkat dengan peningkatan pembebanan RRP, CB dan CaC03 eli dalam sebatian NR. Pada pembebanan yang sarna, vulkanizat RRP menunjukkan masa skorj dan masa pematangan yang lebih pendek berbanding vulkanizat CB dan CaC03. Vulkanizat CB menunjukkan perubahan yang ketara (sarna ada positif atau negatit) terbadap kekuatan tensil, modulus tens il , pemanjangan pada takat putus, kekerasan, sifat dinamik dan kelakuan pembengkakan dengan peningkatan pembebanan CB eli dalam sebatian NR. Walau bagaimanapun, bagi RRP dan CaC03 perubaban pelbagai sifat ini adalab rendah dengan peningkatan pembebanan pengisi. Keputusan ini menunjukkan RRP boleh digunakan untuk menggantikan CaC03 sebagai cheapener eli dalam sebatian NR. Recycled rubber powder (RRP) obtained from the sanding process of polishing rubber balls and artificial eggs was used as a filler in natural rubber (NR) compounds. The properties of vulcanizates were compared with commercial fillers such as carbon black (CB) and calcium carbonate (CaC03). Results obtained showed that, the scorch time and cure time decrease meanwhile minimum torque and Mooney viscosity increase with increasing RRP, CB and CaC03 loading in NR compounds. At a similar loading, RRP vulcanizates showed shortest scorch time and cure time as compared to CB and CaC03 vulcanizates. CB vulcanizates showed significant changes (either positive or negative) of tensile stren~ tensile modulus, elongation at break, hardness, dynamic properties, and swelling behavior \Vith increasing CB loading in NR compounds. However, for RRP and CaC03, the changes of these properties with increasing filler loading are only small. These results showed that RRP could be used to replace CaC03 as a cheapener filler for NR compounds

The potential of using sucrose particles for self-cleaning surface fabrication on recycled high-density polyethylene

Degradation properties of recycled plastic causing it less widely used. By adding extra physical properties, its commercial value and usage can be increased. In this current work, green self-cleaning surfaces from recycled high-density polyethylene (rHDPE) were fabricated using sucrose particles. Water contact angle and sliding angle, self-cleaning properties and surface morphology were characterized. Furthermore, the surface texture was also evaluated by conducting a surface roughness test. By creating porosity onto the rHDPE matrix, the surface exhibits an excellent self�cleaning property with a water contact angle larger than 150°. Surface morphology reveals the porosity and roughness of the surface. In this fabricating process, no chemicals were used while rHDPE is selected for the purpose. Hence, the process is environmentally friendly and low cost for self-cleaning surface fabrication

The potential of using sucrose particles for self-cleaning surface fabrication on recycled high-density polyethylene

Degradation properties of recycled plastic causing it less widely used. By adding extra physical properties, its commercial value and usage can be increased. In this current work, green self-cleaning surfaces from recycled high-density polyethylene (rHDPE) were fabricated using sucrose particles. Water contact angle and sliding angle, self-cleaning properties and surface morphology were characterized. Furthermore, the surface texture was also evaluated by conducting a surface roughness test. By creating porosity onto the rHDPE matrix, the surface exhibits an excellent self�cleaning property with a water contact angle larger than 150°. Surface morphology reveals the porosity and roughness of the surface. In this fabricating process, no chemicals were used while rHDPE is selected for the purpose. Hence, the process is environmentally friendly and low cost for self-cleaning surface fabrication

A green approach of superhydrophobic surface fabrication on recycled high-density polyethylene using sodium chloride

In this work, the water-dissolved surface modifier method was introduced to recycled high-density polyethylene (rHDPE) matrix to fabricate green superhydrophobic surfaces. Surface cavities on rHDPE are formed by sodium chloride particles which can be readily rinsed off and reused. Water contact angle, self-cleaning properties, and surface morphology were characterized. By creating porosity onto the rHDPE matrix, the surface exhibits an excellent self-cleaning property with a water contact angle larger than 150°. Surface morphology reveals the porosity and roughness of the surface. In this fabricating process, no chemicals are used while rHDPE is selected for the purpose. Based on the findings, it is proven that the superhydrophobic surface can be fabricated with a simple yet green approach