TEMPO氧化纳米纤维素/壳聚糖涂布制备防油纸及其性能研究

Preparation and Properties of Oil-proof Paper by Coating TEMPO-oxidized Cellulose Nanofibril/Chitosan

关键词:  TEMPO氧化  纳米纤维素  壳聚糖  防油纸  涂布

Key Words:TEMPO-oxidized  cellulose nanofibril  chitosan  oil-proof paper  coating

摘要:本研究以未漂阔叶木浆为原料，在最适打浆度（70 °SR）下制备定量为60 g/m²的防油原纸，通过表面涂布TEMPO氧化纳米纤维素（TCNF）和壳聚糖（CTS）的方法，提高纸张的防油性能，探究不同涂布量对纸张防油等级、耐热油性能、防溶剂性能、纸张物理性能的影响。结果表明，双层涂布TCNF和CTS，涂布量分别为2.5和1.4 g/m²时，纸张达到最高防油等级（12级），且纸张具有较好的耐热油和防溶剂性能，透气度0.003 μm/(Pa·s)，厚度为106 μm。

Abstract:In this study， unbleached hardwood pulp as raw material， oil-proof base paper with 60 g/m² was prepared under the circumstance of optimal beating degree （70 °SR）. The oil-proof performance of the paper was improved by coating TEMPO-oxidized cellulose nanofibril （TCNF） and chitosan （CTS）. The effects on different amount of coating with oil-proof grade， hot oil resistance， solvent resistance and physical properties were also explored. The results showed that when the amount of coating of TCNF and CTS were 2.5 g/m² and 1.4 g/m² respectively， the oil-proof grade of paper reached the peak （grade 12） and the paper had excellent hot oil resistance， solvent resistance. Air permeability and thickness of paper was 0.003 μm/(Pa·s) and 106 μm, respectively.