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      Analisis Karakteristik Permukaan Kayu Jati (Tectona grandis L.) dengan Aplikasi Nanocoating Titanium Dioksida terhadap Weathering

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      Date
      2023
      Author
      Andini, Putri
      Rahayu, Istie Sekartining
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      Abstract
      Kayu jati (Tectona grandis L.) cepat tumbuh memiliki karakteristik yang inferior dibandingkan dengan jati rotasi panjang seperti stabilitas dimensi dan keawetan yang rendah sehingga dapat membatasi penggunaannya terutama untuk aplikasi eksterior. Teknologi pelapisan (coating) menggunakan bahan yang bersifat melindungi dari paparan UV seperti nano titanium dioksida (TiO2) perlu dilakukan. Penelitian ini bertujuan untuk menganalisis pengaruh perlakuan coating (jenis dan konsentrasi nano TiO2) dan periode weathering terhadap kekasaran permukaan dan keterbasahan kayu jati (Tectona grandis L.). Bahan coating yang digunakan yaitu varnish berpelarut air dan varnish berpelarut minyak. Adapun nanocoating terbuat dari campuran nano TiO2 dan varnish dengan konsentrasi masing-masing 1%, 5%, dan 10%. Parameter yang diuji meliputi kekasaran permukaan dan keterbasahan. Hasil penelitian menunjukkan kayu yang diberi perlakuan coating varnish air menyebabkan permukaan kayu lebih halus. Penambahan nano TiO2 pada varnish air menurunkan keterbasahan kayu lebih baik dibandingkan varnish minyak. Kekasaran permukaan dan keterbasahan seluruh kayu jati mengalami peningkatan setelah weathering 2 dan 4 bulan.
       
      Fast growing Teak wood (Tectona grandis L.) has inferior wood characteristics compare to long rotation teak wood, such as poor dimensional stability and durability, which can limit its use especially for exterior aplications. This requires the use of coatings technology with substances like titanium dioxide nanoparticles (TiO2) that are made specifically to block UV radiation. This study aims to analyze the effects of coating treatment (coating type and consentration of nano TiO2) and weathering period on the surface roughness and wettability of teak wood. Both oil-based and water-based varnish are utilized as coating materials. Any nanocoating is formed of varnish and nano-sized TiO2 particles, and each is applied separately at concentrations of 1%, 5%, and 10%. Parameters studied consisted of surface roughness and wettability. The results shows that wood treated with a water-based varnish makes the wood surface smoother than oil-based varnish. The wettability of wood is improved more by the addition of nano TiO2 to a water-based varnish than oil-based varnish. After 2 and 4 months of weathering, the surface roughness and wettability of all treated wood increased.
       
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      http://repository.ipb.ac.id/handle/123456789/125677
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      • UT - Forestry Products [2466]

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      Indonesia DSpace Group 
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