Facile fabrication of hydrophobic cellulosic paper with good barrier properties via PVA/AKD dispersion coating
Source abstract
Abstract
Abstract Due to the micro-sized pores on cellulosic substrate surface and the hygroscopic nature of cellulosic fibers, paper has poor barrier properties. Dispersion coating can improve the barrier properties of cellulosic paper noticeably by forming a continuous, non-porous polymer film on paper surface. In this work, the excellent film-forming performance of polyvinyl alcohol (PVA) was used to seal the surface pores of paper, thus enhancing the barrier properties. Alkyl ketene dimer (AKD) was also added as a coating component to improve the water resistance of paper. Results showed that after PVA/AKD coating hydrophilic base paper changed to hydrophobic one, as proved by water contact angle (WCA) measurements. The water vapor transmission rate (WVTR) of base paper decreased sharply from 543 g/m2·day to 2 g/m2·day in the case of PVA/AKD triple coating, where the threshold of WVTR was reached. Meanwhile, the pristinely non-grease resistant base paper converted to a product with the highest grease resistance level. Furthermore, both elongation at break and tensile strength of base paper improved markedly after PVA/AKD coating. It was concluded that these improved properties were contributed by the combined use of PVA and AKD in the coating.
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Research context
OpenAlex topics: Material Properties and Processing · Advanced Cellulose Research Studies · Surface Modification and Superhydrophobicity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Forest Sciences, College of Agriculture and Life Sciences , 26725 Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul , Korea
Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences , 26725 Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul , Korea
Department of Forest Sciences, College of Agriculture and Life Sciences, Research Institute of Agriculture and Life Sciences , 26725 Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul , Korea
Funding
China Scholarship Council
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