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Characteristics of Dyeing Cotton Thread Using Fine Particle Powder from Tectona Grandis Leaf Dian W. Kurniawidi; Diah L. Dewi; Susi Rahayu; Arif Budianto; Siti Alaa
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3753

In Lombok, the traditional process of dyeing woven fabrics primarily involves the use of synthetic dyes, which can contribute to environmental pollution. This study aimed to identify the characteristics of woven yarn and assess the effect of dye solution pH on yarn properties when using teak leaves (Tectona grandis) to produce dye powder through a mechanical thermal method. The thread coloring process comprised mordanting, coloring, and fixation stages, with the assistance of Android applications for color analysis and a Universal Tensile Machine Type RTG-1310 to assess mechanical properties. The results revealed that dyeing yarn with anthocyanin powder from teak leaves yielded a range of colors, including shades of gray, brown, and red. The highest tensile strength observed was 2,664 cN/dtex, and the solution's pH significantly influenced the dominant color, with red being prominent. Notably, optimal tensile strength (1,649 cN/dtex) was achieved at pH six. These findings highlight the potential for producing high-quality cotton threads using different dyeing processes and techniques. The study's insights contribute to both environmental protection and thread quality enhancement in the textile industry

Characteristics of Dyeing Cotton Thread Using Fine Particle Powder from Tectona Grandis Leaf Dian W. Kurniawidi; Diah L. Dewi; Susi Rahayu; Arif Budianto; Siti Alaa
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3753

In Lombok, the traditional process of dyeing woven fabrics primarily involves the use of synthetic dyes, which can contribute to environmental pollution. This study aimed to identify the characteristics of woven yarn and assess the effect of dye solution pH on yarn properties when using teak leaves (Tectona grandis) to produce dye powder through a mechanical thermal method. The thread coloring process comprised mordanting, coloring, and fixation stages, with the assistance of Android applications for color analysis and a Universal Tensile Machine Type RTG-1310 to assess mechanical properties. The results revealed that dyeing yarn with anthocyanin powder from teak leaves yielded a range of colors, including shades of gray, brown, and red. The highest tensile strength observed was 2,664 cN/dtex, and the solution's pH significantly influenced the dominant color, with red being prominent. Notably, optimal tensile strength (1,649 cN/dtex) was achieved at pH six. These findings highlight the potential for producing high-quality cotton threads using different dyeing processes and techniques. The study's insights contribute to both environmental protection and thread quality enhancement in the textile industry

Studi Pengaruh pH Terhadap Stabilitas Warna dan Kuat Tarik Kain Katun dengan Pewarna Alami Antosianin Susi Rahayu; Sintya Dewi Lestari; arif Budianto; Alfina Taurida Alaydrus; Halil Akhyar
Kappa Journal Vol 9 No 1 (2025): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i1.29595

Lombok has become one of the leading tourist destinations, especially with the development of the Mandalika Special Economic Zone. One of the cultural products that has the potential to be offered to tourists is Lombok traditional weaving. The study aims to analyze the effect of the pH of the dye solution on the characteristics of the dyed fabric. The research method uses a mechanical thermal method to obtain anthocyanin powder extraction, standard staining methods namely mordan, staining, and fixation, as well as characterization using tensilons, Color Analyzer software, Hooloovoo, and Encycolorpedi website. The extraction of anthocyanin compounds from teak leaves (Tectona grandis) was successfully carried out by mechanical thermal method. Color analysis and identified color changes are significantly affected by differences in solution pH. The higher the pH used, the darker the color will be produced and the higher the level of color fading in the fabric. The smallest E value is at pH 6 =5.364 and the largest E value is at pH 14 = 17.145. However, an increase in pH tends to increase the tensile strength of the fabric. However, the optimum tensile strength condition was obtained in a solution of pH 12, which was 17.414 MPa, while at pH 13 and pH 14, the tensile strength of the fabric decreased to 16.071 MPa. Based on the analysis of the influence of pH of dye solution on fabric tensile strength, it was identified that a 6th-order polynomial model (determination coefficient R2 = 0.9479) was identified as accurate enough to model the influence of pH on fabric tensile strength. Therefore, this finding has potential in the textile industry, especially in increasing the economic value of Lombok weaving.

A Correlation Between Exposure to PM1 from Firewood Burnings in Lombok Island and Erythrocyte Deformations Kasnawi Al Hadi; Arif Budianto; Alfina Taurida Alaydrus; Dian Wijaya Kurniawidi; Palaivia Harman Wardi
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 14 No. 4: October 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v14i4.16656

Lombok Island is facing a big issue of emissions. These emissions are easily found in firewood burning in home industry, household, and many others. The emission can be found as PM (particulate matter), while a long-term exposure to PM has a potential to disturb respiratory system. This study aims to investigate the correlation between exposure to firewood burning emission (PM~1~) and erythrocyte deformation levels. Three different firewood samples (pine, teak, and mixed firewood) were used as biomass-burning sources, with each sample burned at three different combustion speeds (fast: 1.8 m/s, medium: 1.2 m/s, and slow: 0.6 m/s). The samples were burnt inside a furnace, while the resulting PM~1~ emissions were exposed to the mice (n=10 per subgroup) as the experimental animal for ten consecutive days (100 s exposure per day). All mice were sacrificed on day 11 to investigate the deformation level under a digital microscope. The results show that firewood burnings generate varied PM~1~ concentrations. The PM~1~ concentrations ranged from 97×10³ to 257×10³ µg/m³ (0.97–2.57 g/m³ in the exposure chamber), depending on the firewood sample. Mixed firewood samples have the highest PM~1~ concentration and erythrocyte deformation level, while teakwood has the smallest values. Linear regression analysis revealed a strong correlation between PM~1~ exposure and erythrocyte deformation (β = 0.082, 95% CI: 0.064–0.100, R² = 0.81, p < 0.001). It can be concluded that a higher PM~1~ concentration generates a higher erythrocyte deformation level. A higher combustion speed generates a smaller concentration, resulting in a lower deformation level.

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