PERENNIAL

The Effect of Paint Viscosity on The Adhesion of Top Coating on Rajumas Wood (Duabanga moluccana Blume)

Liza Umitasari, Hairil Anwar, Andi Tri Lestari — Mon, 13 Nov 2023 00:00:00 +0000

This research aims to analyze the effect of paint viscosity on the adhesion of the final coating material to the radial and tangential sections of Rajumas wood. The research samples were smoothed using sandpaper and coated with water-based paint. Variations in paint viscosity are obtained by dilution using 10%, 20% and 30% of 1L of water. The viscosity of the paint solution obtained by dilution of 10%, 20% and 30% was 2.32 poise, 2.41 poise and 2.44 poise, respectively. Paint adhesion testing uses the Cross Cut Test method which refers to ASTM D 3359-09. The results of the research show that variations in paint viscosity have a significant effect on the adhesion of the final coating material to the radial and tangential cross-sections of Rajumas wood. A viscosity of 2.32 poise produces the best paint adhesion compared to a viscosity of 2.41 poise and 2.44 poise and the difference in cross-section (radial and tangential) does not show a significant difference in the adhesion value of the final coating material to Rajumas wood.

Community-Based Ecotourism Management Strategy in Bukit Pergasingan, Sembalun Village, East Lombok

Baiq Jiwa Yulina Putri, Andi Chairil Ichsan, Andi Tri Lestari — Mon, 13 Nov 2023 00:00:00 +0000

Bukit Pergasingan is a tourist attraction that has been developing for a long time. It is necessary to review essential aspects in the management of Bukit Pergasingan, such as attractiveness, facilities, accessibility, and additional services. Apart from that, another problem with its management is that it is not yet known whether it has implemented the principles of community-based ecotourism development in its management. This research aimed to determine community-based ecotourism management strategies in Bukit Pergasingan. The method used in this research is the descriptive method. The objects used in this research are the management institution (BKPH Rinjani Timur) and the management partner (Kelompok Koperasi Wisatani). The tools used in conducting this research were questionnaires, cameras, laptops, recorders, and stationery. The data used in this research are qualitative and quantitative. The data sources used in this research are primary data and secondary data. The data analysis used is SWOT analysis. The results of the research show that the strategies used for managing Ecotourism in the Bukit Pergasingan tourist attraction are socializing Bukit Pergasingan tourism with its potential by involving it to attract tourists, packaging more attractive and more educational tour packages related to conservation to guests, optimizing collaboration with NGOs, the Tourism Office or related agencies for the development of Bukit Pergasingan tourism.

Anatomical Properties and Quality of African Wood Fiber as A Raw Material for Pulp and Paper

Dini Lestari, Rima Vera Ningsih, Fauzan Fahrussiam — Mon, 13 Nov 2023 00:00:00 +0000

Nowdays, there is growing interested in development of afrika wood utilization. Afrika wood is one fast growing species from plantation forest. The objective of this research was to evaluated of characterization of afrika fiber for pulp and paper production. Anatomical properties of afrika wood were also investigated. Determination of characterization of fiber dimension was conducted based on Tappi (1989). The resulted showed that afrika wood have type of porous namely soliter and radial multiple porous. The parenchyma and ray characters were paratracheal parenchyma confluent and multiseriate types. For fiber characteristic obtained by fiber length, fiber diameter, lumen diameter, and cell wall thickness were 935.33 µm, 28.52 µm, 21.29 µm, and 3.62 µm respectively. The derived value of afrika fibers obtained by runkel ratio, felting power, muhlsteph ratio, coefficient of rigidity, flexibility ratio, and fiber length were 0.43, 35.02, 20.51, 0.12, 0.76, and 935.33 µm respectively. Based on the derived value of afrika fibers, it qualifies as Grade II material for pulp and paper production. Afrika wood can be used as raw material for pulp and paper production.

The Effect of Paint Viscosity on The Wettabillity of Rajumas Wood (Duabanga moluccana Blume)

Zsarytha Maulia, Hairil Anwar, Andi Tri Lestari — Mon, 13 Nov 2023 00:00:00 +0000

Rajumas wood is one of the local wood forest products from West Nusa Tenggara and has low strength and durability. Finishing treatment is needed for the service life of wood. One of the indicators of finishing quality is the ability of paint liquid wetting on the wood surface (wettability). This research aims to analyze the effect of paint viscosity on the wettability of rajumas wood. The samples used were radial and tangential sections in air-dry condition, and the wood surfaces were sanded with abrasive paper of 150 grit. The value of viscosities was 2.44, 2.41, and 2.32 poise from each percentage of paint and water ratio of 90%:10%, 80%:20%, and 70%:30%. Wettability was determined based on the rate of change equilibrium contact angle using the S/G equation. The research results show that the low viscosity value of Aqua Politur produces the lowest equilibrium value and highest wettability value (K-Value) in both radial and tangential sections. A high K-value indicates that Aqua Politur's ability to wet the wood surface is better, as shown by the paint percentage ratio of 70%:30%.