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| Studies on Depositional Behavior of Model Sticky Substances |
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| DOI：10.11980/j.issn.0254-508X.2012.08.001 |
| Key Words:model stickies stability deposition behavior |
| Fund Project:山东省“泰山学者”建设工程专项经费资助项目（TS200637022）；国家自然科学基金（30972327）和“教育部新世纪优秀人才”支持计划资助项目（NCET-08-0882）。 |
| Author Name | Affiliation | | 于海龙1 | 1.山东轻工业学院造纸科学与技术省部共建教育部重点实验室,山东济南,250353 | | 高 扬1,2 | 1.山东轻工业学院造纸科学与技术省部共建教育部重点实验室,山东济南,250353；2.华泰集团有限公司,山东广饶,257335 | | 李宗全1 | 1.山东轻工业学院造纸科学与技术省部共建教育部重点实验室,山东济南,250353 | | 秦梦华1 | 1.山东轻工业学院造纸科学与技术省部共建教育部重点实验室,山东济南,250353 | | 张凤山2 | 2.华泰集团有限公司,山东广饶,257335 |
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| Abstract:Using model sticky substances consisted of the components of wood extractives and synthetic polymers, the effects of metal ions, cationic polymers and mineral fillers on the physicochemical properties and depositional behavior of sticky substances were investigated. Results showed that introducing Al3+ into the system, even at a low concentration, can markedly destabilize sticky substances, and a similar behavior is observed for Ca2+. Cationic polymers affect significantly the stability of sticky substances. Polyethylene imine (PEI) results in destabilization at the neutral point, and lead to maximum deposition of stickies. Cationic polyacrylamide (CPAM) accelerates the aggregation of sticky particles even at a low dosage. Sticky particles may regain the stabilization as adding excessive dosage of PEI, but it may not be the similar for adding CPAM. Less sticks deposition is observed, when the system contains pulp fibers, which may be attributed to the attachment of stickies onto the fibers. Fillers can adsorb the sticky substances at a low dosage. However, the whole surfaces of stickies may be covered by excess amount of fillers and results in a less deposition. |
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