Preparation and Application of Blocked &amp; Crosslinked Waterborne Polyurethane Microemulsion as Paper Strengthening Agent

Xiao Juan Lai; Mi Na Gong; Lei Wang

doi:10.4028/www.scientific.net/AMR.989-994.644

Paper Titles

The Synthesis of Ionic Liquid Crystal Polymer and the Study of as Chromatographic Stationary Phase
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Research on Properties of CB/EVA Semiconductive Shielding Composites
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Hygrothermal Ageing Modeling and Numerical Testing of Unidirectional Polymeric Composites
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Attenuation Characteristics of Ultrasonic Velocity and Acoustic-Based TC4 Alloy Uniformity Nondestructive Evaluation
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Preparation and Application of Blocked & Crosslinked Waterborne Polyurethane Microemulsion as Paper Strengthening Agent
p.644

The Fatigue Life Prediction for EB-PVD Thermal Barrier Coating
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Research on Performance Features of Shape Memory Alloys
p.652

Structural and Optical Properties of Al Co-Doped ZnCoO Thin Film
p.656

The Most Probable Mechanism Function of PVC Thermal Decomposition
p.660

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 989-994Preparation and Application of Blocked &...

Preparation and Application of Blocked & Crosslinked Waterborne Polyurethane Microemulsion as Paper Strengthening Agent

Abstract:

By means of self-emulsifying, blocked & crosslinked cationic polyurethane (CBPU) microemulsion was prepared with isophorone diisocyanate (IPDI), polycaprolactone glycol, bisphenol A, methyldiethanolamine (MDEA) as cationic hydrophilic chain-extending agent, ̴̵̹̹̱̼̽͊̿˰̱̓˰̷̲̼̳̻̹̿̾˰̷̵̱̾̈́˰̴̱̾˰̞˽̫˸́˼́˽̴̵̸̹͉̼̽̈́˽̂˽̵̱̳͉̼̈́˹̵̸͉̼̭̈́˽ڂ˽̴̸̴̵̸̹͉͈͉͉̼̱̹͂̿̈́̽̾̿˰̴̵̱̱̹̀͂̿̀̾̽˸̠̔̔˹˰̱̓˰̷̳̼̹̻̹͂̿̓̓̾̾˰̷̵̱̾̈́˾˰̶̶̵̳̈́̓̕˰̶̿˰̸̵̈́˰̠̥̓̒˰̵̴̲̼̳̻̿˰̱̹͂̈́̿˰̿̾˰̸̵̈́˰̸͉̹̳̱̼̀̓˰̵̵̹̀͂̿̀͂̈́̓˰̶̿˰̸̵̈́˰̵̵̴̱̈́͂̈́˰̵̱̀̀͂˰̵̵͇͂˰̴̵̴̹̓̈́ͅ˾˰̸̵̤˰̵̵̵͈̹̱̼̀͂̽̾̈́˰̵̼͂̓̈́̓ͅ˰̸͇̓̿˰̓̈́͂uctures of tertiary amine group, imidazole ring and urethane group are found in CBPU molecular structure. The morphology of the particle is uniform spheric structure and its size is related to the content of tertiary amine groups of CBPU. The paper strength, especially the wet strength can be obviously increased with the increasing of the blocked ratio of CBPU. The optimum blocked ratio of CBPU is 10%.