KAJIAN KEMURNIAN DAN PENGARUH NISBAH PEREAKSI, pH AWAL REAKSI DAN SUHU REAKSI TERHADAP NILAI CMC & HLB NATRIUM LIGNOSULFONAT

Eric Wirtanto (Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara)
Michael Lim (Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara)
Zuhrina Masyithah (Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara)

Jurnal Teknik Kimia USU
Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU

Sodium lignosulphonate (SLS) is a product of isolated lignin sulphonation process using NaHSO3 as sulphonation agent.The research begins with isolated lignin from palm shell amd continued with sulphonation with mass ratio of palm shell lignin – NaHSO3(b/b) of 1:0.2, 1:0.3, and 1:0.5 and initial pH of 6, 7, and 8 at temperature 85 oC and 95 oC. The purity of SLS made in this studies was 66,782 %. The CMC value of this SLS ranged from 0,014 – 0,052; while the lowering of surface tension of water ranged from 53,63 – 59,83 dyne/cm. The HLB value ranged from 3,805 – 4,278; means that this surfactant classified as lipophilic. The resulted SLS was dark brown, and water soluble.