Evaluation of Hemp Root Bast as a New Material for Papermaking

Cheng Miao, Lan-Feng Hui, Zhong Liu, Xin Tang

Abstract


Industrial hemp is a non-wood fiber material that can be used for papermaking due to a high yield of hemp raw material and high-quality physical properties of its pulp. Hemp is already used as a raw material for papermaking and other industrial productions. The chemical composition of hemp root bast (HRB) was analyzed. HRBs were pulped using a soda-anthraquinone (Soda-AQ) process and bleached with oxygen (O), chlorine dioxide (D), and alkali (E) using the bleaching sequence OD0ED1. The results showed that HRB can be a suitable raw material for papermaking; the HRB pulp had a high viscosity (893 mL g-1) and brightness (85.52% ISO-brightness).

Keywords


Hemp root bast (HRB); Soda-AQ; Oxygen delignification; Viscosity; Bleaching

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