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| Effect of Acid-activated Bentonite on Rheological Properties of Paper Coatings |
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| DOI： |
| Key Words:acid-activated bentonite; paper coating; rheological property |
| Author Name | Affiliation | | 梁虎南1 | 1.东北电力大学化学工程学院，吉林省吉林市，132012 | | 龙 柱2，* | 2.江南大学生态纺织教育部重点实验室，江苏无锡，214122 | | 杨淑蕙2 | 2.江南大学生态纺织教育部重点实验室，江苏无锡，214122 |
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| Abstract: |
| Effect of acid-activated bentonite on the rheological properties of paper coatings was studied. The results showed that the viscosity of the coatings decreased by adding acid-activated bentonite. At low shear rate, except the coatings containing 40% acid-activated bentonite which showed dilatant flow behavior, the paper coatings exhibited the behavior of pseudoplastic fluid, characterized as shear thinning. The flow properties of paper coatings at high shear rate were pseudoplastic fluid. The results obtained from dynamic viscoelasticity experiment revealed that the dynamic elastic storage modulus and viscid loss modulus of paper coatings decreased with increasing acid bentonite content. Except the coatings containing 40% acid-activated bentonite, the phase angle (δ) at high frequency of paper coatings containing acid-activated bentonite was below 45°.In brief, all of paper coatings belonged to a viscoelastic solid. |
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