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Effects of polyamine structure on rosin sizing under neutral papermaking conditions

✍ Scribed by Zong-Hua Wu; Shao-Ping Chen; Hiroo Tanaka

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
142 KB
Volume
65
Category
Article
ISSN
0021-8995

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✦ Synopsis

The sizing effectiveness of rosin size with four typical polyamines, polyvinylamine (PVAm), polyallylamine (PAAm), poly(dimethylamino ethyl methacrylate) (PDMAEMA), and polyethyleneimine (PEI), was investigated under neutral papermaking conditions. The polyamines with linear structures were more effective than was PEI with a branched structure. The smaller the side chains of the linear polyamine, the larger was the sizing degree of the rosin emulsion size (RE) with the polyamine. The polyamine with smaller molecular geometric size could retain more rosin size on the pulp and form smaller rosin-polyamine complexes.

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