ASA SIZING BEHAVIOUR IN HIGH-YIELD PULP CONTAINING PULP FURNISH
In recent years, there is an increasing interest in using high-yield pulp (HYP), as a partial replacement for hardwood bleached kraft pulp (HWBKP) in the production of high-quality fine papers as a cost-effective way of improving their product performance. In this study, the ASA sizing behaviour in High-yield pulp containing pulp furnish was investigated. The results showed that the substitution of an aspen HYP for HWBKP can increase the ASA sizing performance at a HYP substitution of up to 15％~20％ by the fact that HYP contains more anionic groups (carboxylic and sulfonic groups), which help retain the ASA size and increase the sizing degrees. The ASA sizing was effective in a wide pH range of 6.5~9.0 which suggest that under the industrial conditions, a good sizing degree can be obtained from ASA sizing when the HYP-containing furnish is used. With the pulp temperature increasing, the ASA sizing efficiency decreased. In the presence of Poly- aluminum chloride (PAC), Polyethylenimine (PEI) and poly diallyl-dimethyl ammonium chloride (PDADMAC) had positive effect on improving the ASA sizing efficiency.
ASA sizing High yield pulp (HYP) Polyethylenimine (PEI) poly diallyl-dimethyl
Qijie Chen Yonghao Ni Zhibin He Ping Wang
College of Chemical and Biology Engineering,Changsha University of Science and Technology,Changsha,H Limerick Pulp and Paper Centre, University of New Brunswick,Fredericton,N.B., E3B 5A3,Canada
国际会议
International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)
西安
英文
360-363
2011-06-26（万方平台首次上网日期，不代表论文的发表时间）