Kesesuaian Ph, Sodium Sulfat, Dan Soda Ash Terhadap Ketepatan Rft Warna Pada Proses Pencelupan Reaktif
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Abstrak Penelitian ini bertujuan menganalisis pengaruh pH, sodium sulfat (Na?SO?), dan soda ash (Na?CO?) terhadap ketepatan warna atau Right First Time (RFT) pada proses pencelupan reaktif kain katun. Dalam penelitian ini digunakan rancangan faktorial 3³ dengan variasi pH (9,5–11,5), sodium sulfat (40–80 g/L), dan soda ash (10–20 g/L). Hasil yang diperoleh menunjukkan bahwa seluruh parameter memberikan pengaruh signifikan terhadap ketepatan warna (p < 0,05). Kondisi optimum tercapai pada pH 10,5, sodium sulfat 60 g/L, dan soda ash 15 g/L, menghasilkan nilai ?E sebesar 0,89 serta RFT mencapai 99%. Kombinasi tersebut mampu menghasilkan warna yang paling stabil dan efisien, sekaligus menurunkan tingkat WTM (Waste Textile Material) atau persentase limbah tekstil pada produksi aktual, sehingga menandakan efektivitas pengendalian proses dalam meningkatkan mutu dan efisiensi produksi.
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