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| Preparation of Branched Cationic Polyacrylamide with PETL as Nuclear and Its Application as Paper Strengthening Agent |
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| DOI：10.11980/j.issn.0254-508X.2013.01.007 |
| Key Words:branched cationic polyacrylamide (BCPAM) pentaerythritol (PETL) diallyl dimethyl ammonium chloride(DADMAC) paper strengthening |
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| Abstract:Branched cationic polyacrylamide (BCPAM) was synthesized via free-radical solution polymerization of acrylamide (AM) and diallyl dimethyl ammonium chloride (DADMAC) by using pentaerythritol (PETL) as the core molecule and ceric ammonium nitrate (Ce4+) as the initiator. The structure of the resulting product BCPAM was characterized by FT-IR and 13C-NMR. The effects of initiator dosage and cationic monomer concentration on the intrinsic viscosity of the product were investigated, and the application of BCPAM as paper strengthening agent was studied. The result indicated that initiator dosage and cationic monomer concentration influenced the molecular weight and molecular chain of the product, therefore also influenced the intrinsic viscosity. BCPAM had significant paper strengthening performance; the dry tensile index, tear index and burst index of the hand sheet were increased by 40.6%, 27.6% and 12.6% respectively when the dosage of BCPAM was 0.5% (based on O.D. pulp). |
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