Dyeing of cotton fabric with natural dye from peristrophe bivalvis extract

Application of chitosan and catechin to improve the color intensity and UV protection in the dyeing of cotton fabrics with natural dyes from peristrophe bivalvis

“…The fabric dyed with natural dyes from the leaves of Peristrophe bivalvis without treatment has fair fastness to sunlight and washing with a value of 2-3 for both [2]. The treatment of chitosan and catechin in dyeing fabrics with natural dyes from Peristrophe bivalvis leaves increased the fastness value, both from sunlight and washing.…”

“…Peristrophe bivalvis contains the pigment phenoxazine which produces red color [1]. Research on the use of natural dyes from Peristrophe bivalvis on fabrics has been carried out by Evitasari, et al [2], the optimum color intensity produced is K/S of 0.597 using FeSO4 as mordant to increase affinity of fabric to the dye, with a concentration of 10.96 o.w.f. % at dyeing temperature of 61 o C.…”

Pelatihan Membatik Pewarna Alami dan Pengenalan Teknologi Mordanting Kitosan pada Balai Agung Cendana Semaki, Yogyakarta

“…Dengan adanya pengikat antara zat warna alami dengan kain, diharapkan zat warna alami yang terserap ke dalam kain akan meningkat serta memiliki ketahanan luntur yang lebih baik, baik itu ketahanan luntur terhadap sinar matahari, pencucian, maupun gosokan (Shahid-ul-Islam et al, 2018). Berdasarkan penelitian yang telah dilakukan pada pewarnaan kain dengan zat warna alami dari daun noja, penambahan kitosan akan meningkatkan warna yang terserap pada kain, sehingga warna yang dihasilkan menjadi lebih gelap (Evitasari et al, 2019. Penggunaan kitosan akan meningkatkan penyerapan zat warna ke dalam kain, sehingga diharapkan proses pewarnaan akan menjadi lebih cepat dan tidak memerlukan pencelupan berkali-kali .…”

Dyeing process optimization of chitosan modified cotton dyed with Bixa orellana and Caesalpinia sappan

“…The color produced on fabrics dyed with natural dyes is not as bright as the color of synthetic dyes, so to get the desired color requires several repeating steps of dyeing process. In addition, natural dyes do not have good fastness to sunlight and washing when applied on cotton fabric which mostly used by batik craftsmen [3]. As a result, batik craftsmen are not productive because it takes a long time to process cotton fabric with natural dyes into batik, so many batik craftsmen turn to synthetic dyes.…”