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| Bleaching of Hibiscus Cannabines Kraft Pulp with Sodium Percarbonate |
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| DOI：10.11980/j.issn.0254-508X.2011.01.005 |
| Key Words:sodium percarbonate (SPC) Hibiscus cannabines bleaching |
| Author Name | Affiliation | | 王 强1，2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.华南理工大学广东省造纸技术与装备公共实验室,广东广州,510640 | | 陈克复1，2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.华南理工大学广东省造纸技术与装备公共实验室,广东广州,510640 | | 李 军1，2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.华南理工大学广东省造纸技术与装备公共实验室,广东广州,510640 | | 徐 峻1，2 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.华南理工大学广东省造纸技术与装备公共实验室,广东广州,510640 | | 刘姗姗3 | 3.中国林业科学研究院林产化学工业研究所,江苏南京,210042 |
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| Abstract:The bleachability of Hibiscus cannabines kraft pulp bleaching with sodium percarbonate (SPC) was studied. The key factors, including SPC dosage, bleaching temperature, time and active alkali charge, were investigated by orthogonal experiment. The results showed that the four factors have different effects on SPC bleaching, and the range analysis shows temperature has maximal effect on brightness and viscosity. The optimal bleaching condition could be proposed as follows: SPC charge 3%， alkali charge 1%，bleaching temperature 70℃ and time 60min. The bleaching performance of SPC is lightly better than hydrogen peroxide in OPQP and OPQDP sequences, then degradation effect on cellulose is similar, the brightness can reach to higher than 80％ISO when OPQDP bleaching sequence is employed. |
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