KARAKTERISTIK PULP RAYON SULFIT ASAM DAN PREHIDROLISIS KRAFT KOMERSIAL BERDASARKAN SNI 938:2017
Abstract
Pulp rayon atau pulp larut (dissolving pulp) merupakan pulp dengan kandungan selulosa alfa tinggi dan kandungan komponen lain seperti lignin, abu, abu tak larut asam, kelarutan dalam alkali, dan ekstraktif rendah. Pulp rayon merupakan bahan baku untuk proses pembuatan serat rayon yang digunakan pada industri tekstil dan pakaian jadi. Penelitian ini bertujuan untuk mempelajari karakteristik pulp rayon sulfit asam dan prehidrolisis kraft komersial yang kemudian dibandingkan dengan persyaratan mutu SNI 938:2017 Pulp rayon. Pulp rayon komersial yang diperoleh dari industri pulp rayon dan industri rayon di dalam negeri maupun impor dianalisis sesuai dengan persyaratan mutu SNI 938:2017. Parameter analisisnya adalah kadar air (SNI 08-7070-2005); selulosa alfa (SNI 8400:2017 (T 203 cm-09, IDT)), kelarutan dalam alkali (SNI 692:2010), ekstraktif diklorometana (DCM) (SNI 8401:2017 (T 204 cm-07, IDT)), abu (SNI 0442:2009), abu tidak larut asam (SNI ISO 776:2010), Ca dan Fe (TAPPI T 266 om-18); viskositas (SNI 8402:2017 (T 230 om-13, IDT)); viskositas intrinsik (SNI 5351:2012); dan derajat cerah ISO (SNI 2470-1:2014). Analisis dilakukan dengan 3 ulangan dan hasil dinyatakan sebagai rata-rata. Berdasarkan percobaan, pulp rayon prehidrolisis kraft memiliki kandungan selulosa alfa yang lebih tinggi, S10 dan S18 yang lebih rendah, dan viskositas yang lebih rendah dibandingkan pulp rayon sulfit asam. Dari lima jenis pulp rayon komersial, hanya dua jenis pulp rayon komersial yang memenuhi persyaratan mutu SNI 938:2017. Kedua pulp rayon tersebut merupakan pulp rayon kayudaun proses prehidrolisis kraft.
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DOI: http://dx.doi.org/10.31153/js.v22i1.765
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