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| Study of the Stability Characteristics of the Stickies Model Compounds in Papermaking System |
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| DOI：10.11980/j.issn.0254-508X.2017.12.001 |
| Key Words:microstickies model compounds stability characteristics |
| Fund Project:国家基金委自然科学基金(31470607)；广东省自然科学基金(2015A020213224)；江苏省重点实验室开放基金(201303)。 |
| Author Name | Affiliation | | 耿胜芳1 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510641 | | 李 擘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,510641；2.江苏省制浆造纸科学与技术重点实验室（南京林业大学）,江苏南京,210037 | | 唐亚男1 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510641 | | 王志伟3 | 3.广西大学轻工与食品工程学院,广西清洁化制浆造纸与污染控制重点实验室,广西南宁,530004 | | 武书彬1 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510641 |
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| Abstract:The common sizing agent, alkylketene dimer (AKD), and the coating binder carboxylated styrene-butadiene latex (XSBRL), were taken as model compounds of microstickies in whitewater to investigate their stability characteristics in the liquid phase. The basic characteristics of AKD and XSBRL were characterized by Infrared Spectrometric Analyzer (FT-IR) and Scanning Electron Microscopy (SEM), and the thermal properties were analyzed through differential scanning calorimetry (DSC) and thermogravimetry (TG). Furthermore, the effects of the conditions of papermaking system on the change of the particle size distribution were investigated by using a method combining laser, flow cytometric technology and fluorescent tracers. The results showed that both of the two model compounds were sticky and in high elastic state in the temperature range of papermaking system compared with in glass state at room temperature, which induced the aggregation among particles. XSBRL was more sensitive to temperature and its aggregation degree was higher than AKD’s. With the temperature increasing, the aggregation tendencies of these two model compounds were slightly increased. When the system temperature was kept at 50℃, the aggregation state of the two model compounds increased slightly and changed marginally with time went on. The effect of mechanical agitation on the particle size distribution of the two model compounds was related to the strength of agitation. The particles of the two model compounds didn’t slightly aggregate anymore and tended to disperse when the stirring speed exceeded 800 r/min. |
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