Recyclable oil resistant paper with enhanced water resistance based on alkyl ketene dimer modified sodium alginate

Author:

Ma Liyan1,Liu Shuai1,Shi Jiahui12,Wu Rina13ORCID,Lu Peng3

Affiliation:

1. State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin Key Laboratory of Pulp & Paper, China Light Industry Key Laboratory of Papermaking and Biorefinery, School of light industry science and engineering , Tianjin University of Science & Technology , Tianjin 300457 , China

2. State Key Laboratory of Food Nutrition and Safety, College of Food Science and Technology , Tianjin University of Science & Technology , Tianjin 300457 , China

3. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering , Guangxi University , Nanning 530004 , China

Abstract

Abstract Sustainable coatings exhibit potential in enhancing oil resistance of packaging paper. Alkyl ketone dimer (AKD) was used to esterify sodium alginate (SA) to prepare water and oil resistant agent SAD. As SAD was coated on paper, it reduced the surface energy and blocked the fiber pores of paper, thus improving the barrier performance of paper. The oil resistance grade can reach grade 6 at coating amount of 2.13 ± 0.26 g/m2, which is qualified for food packaging. The coated paper also showed good barrier to hot castor oil. Resistance to organic solvent and water were also enhanced with initial water contact angle (WCA) increased to 69.2°. Compared with base paper, SAD coated paper had better mechanical properties and more importantly, coated paper can be effectively recycled to achieve green recycling.

Funder

Opening Project of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science,Forestry

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